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Add Pico W and lwIP support

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This commit is contained in:
graham sanderson 2022-06-29 23:03:32 -05:00
parent 77c04e458c
commit 5e9a5e827b
36 changed files with 2915 additions and 13 deletions
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6
.gitmodules vendored
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@ -1,3 +1,9 @@
[submodule "tinyusb"] [submodule "tinyusb"]
path = lib/tinyusb path = lib/tinyusb
url = https://github.com/hathach/tinyusb.git url = https://github.com/hathach/tinyusb.git
[submodule "lib/cyw43-driver"]
path = lib/cyw43-driver
url = https://github.com/georgerobotics/cyw43-driver.git
[submodule "lib/lwip"]
path = lib/lwip
url = https://github.com/lwip-tcpip/lwip.git

18
README.md
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@ -110,6 +110,24 @@ instructions for other platforms, and just in general, we recommend you see [Ras
``` ```
* Or by cloning the SDK locally, but without copying `pico_sdk_import.cmake`:
1. `git clone` this Raspberry Pi Pico SDK repository
2. Setup a `CMakeLists.txt` like:
```cmake
cmake_minimum_required(VERSION 3.13)
# initialize the SDK directly
include(/path/to/pico-sdk/pico_sdk_init.cmake)
project(my_project)
# initialize the Raspberry Pi Pico SDK
pico_sdk_init()
# rest of your project
```
1. Write your code (see [pico-examples](https://github.com/raspberrypi/pico-examples) or the [Raspberry Pi Pico C/C++ SDK](https://rptl.io/pico-c-sdk) documentation for more information) 1. Write your code (see [pico-examples](https://github.com/raspberrypi/pico-examples) or the [Raspberry Pi Pico C/C++ SDK](https://rptl.io/pico-c-sdk) documentation for more information)
About the simplest you can do is a single source file (e.g. hello_world.c) About the simplest you can do is a single source file (e.g. hello_world.c)

3
docs/Doxyfile.in
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@ -60,4 +60,5 @@ PREDEFINED = __not_in_flash_func(x) \
__time_critical_func(x) \ __time_critical_func(x) \
__not_in_flash(x)= \ __not_in_flash(x)= \
__no_inline_not_in_flash(x)= \ __no_inline_not_in_flash(x)= \
__attribute__(x)= __attribute__(x)= \
DOXYGEN_GENERATION=

7
docs/index.h
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@ -56,6 +56,13 @@
* \defgroup tinyusb_host tinyusb_host * \defgroup tinyusb_host tinyusb_host
* @} * @}
* *
* \defgroup networking Networking Libraries
* Functions for implementing networking
* @{
* \defgroup pico_lwip pico_lwip
* \defgroup pico_cyw43_arch pico_cyw43_arch
* @}
*
* \defgroup runtime Runtime Infrastructure * \defgroup runtime Runtime Infrastructure
* Libraries that are used to provide efficient implementation of certain * Libraries that are used to provide efficient implementation of certain
* language level and C library functions, as well as CMake INTERFACE libraries * language level and C library functions, as well as CMake INTERFACE libraries

1
lib/cyw43-driver Submodule

@ -0,0 +1 @@
Subproject commit 195dfcc10bb6f379e3dea45147590db2203d3c7b

1
lib/lwip Submodule

@ -0,0 +1 @@
Subproject commit 239918ccc173cb2c2a62f41a40fd893f57faf1d6

102
src/boards/include/boards/pico_w.h Normal file
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@ -0,0 +1,102 @@
/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
// -----------------------------------------------------
// NOTE: THIS HEADER IS ALSO INCLUDED BY ASSEMBLER SO
// SHOULD ONLY CONSIST OF PREPROCESSOR DIRECTIVES
// -----------------------------------------------------
// This header may be included by other board headers as "boards/pico.h"
#ifndef _BOARDS_PICO_W_H
#define _BOARDS_PICO_W_H
// For board detection
#define RASPBERRYPI_PICO_W
// --- UART ---
#ifndef PICO_DEFAULT_UART
#define PICO_DEFAULT_UART 0
#endif
#ifndef PICO_DEFAULT_UART_TX_PIN
#define PICO_DEFAULT_UART_TX_PIN 0
#endif
#ifndef PICO_DEFAULT_UART_RX_PIN
#define PICO_DEFAULT_UART_RX_PIN 1
#endif
// --- LED ---
// no PICO_DEFAULT_LED_PIN - LED is on Wireless chip
// no PICO_DEFAULT_WS2812_PIN
// --- I2C ---
#ifndef PICO_DEFAULT_I2C
#define PICO_DEFAULT_I2C 0
#endif
#ifndef PICO_DEFAULT_I2C_SDA_PIN
#define PICO_DEFAULT_I2C_SDA_PIN 4
#endif
#ifndef PICO_DEFAULT_I2C_SCL_PIN
#define PICO_DEFAULT_I2C_SCL_PIN 5
#endif
// --- SPI ---
#ifndef PICO_DEFAULT_SPI
#define PICO_DEFAULT_SPI 0
#endif
#ifndef PICO_DEFAULT_SPI_SCK_PIN
#define PICO_DEFAULT_SPI_SCK_PIN 18
#endif
#ifndef PICO_DEFAULT_SPI_TX_PIN
#define PICO_DEFAULT_SPI_TX_PIN 19
#endif
#ifndef PICO_DEFAULT_SPI_RX_PIN
#define PICO_DEFAULT_SPI_RX_PIN 16
#endif
#ifndef PICO_DEFAULT_SPI_CSN_PIN
#define PICO_DEFAULT_SPI_CSN_PIN 17
#endif
// --- FLASH ---
#define PICO_BOOT_STAGE2_CHOOSE_W25Q080 1
#ifndef PICO_FLASH_SPI_CLKDIV
#define PICO_FLASH_SPI_CLKDIV 2
#endif
#ifndef PICO_FLASH_SIZE_BYTES
#define PICO_FLASH_SIZE_BYTES (2 * 1024 * 1024)
#endif
// note the SMSP mode pin is on WL_GPIO1
// #define PICO_SMPS_MODE_PIN
#ifndef PICO_RP2040_B0_SUPPORTED
#define PICO_RP2040_B0_SUPPORTED 0
#endif
#ifndef PICO_RP2040_B1_SUPPORTED
#define PICO_RP2040_B1_SUPPORTED 0
#endif
#ifndef CYW43_PIN_WL_HOST_WAKE
#define CYW43_PIN_WL_HOST_WAKE 24
#endif
#ifndef CYW43_PIN_WL_REG_ON
#define CYW43_PIN_WL_REG_ON 23
#endif
#ifndef CYW43_WL_GPIO_COUNT
#define CYW43_WL_GPIO_COUNT 3
#endif
#ifndef CYW43_WL_GPIO_LED_PIN
#define CYW43_WL_GPIO_LED_PIN 0
#endif
#endif

2
src/boards/pico_w.cmake Normal file
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@ -0,0 +1,2 @@
set(PICO_CYW43_SUPPORTED "1" CACHE INTERNAL "Try to add support for PICO_CYW43")
include(${CMAKE_CURRENT_LIST_DIR}/generic_board.cmake)

8
src/common/pico_base/include/pico/error.h
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@ -10,14 +10,18 @@
#ifndef __ASSEMBLER__ #ifndef __ASSEMBLER__
/*! /*!
* Common return codes from pico_sdk methods that return a status * \brief Common return codes from pico_sdk methods that return a status
* \ingroup pico_base
*/ */
enum { enum pico_error_codes {
PICO_OK = 0, PICO_OK = 0,
PICO_ERROR_NONE = 0, PICO_ERROR_NONE = 0,
PICO_ERROR_TIMEOUT = -1, PICO_ERROR_TIMEOUT = -1,
PICO_ERROR_GENERIC = -2, PICO_ERROR_GENERIC = -2,
PICO_ERROR_NO_DATA = -3, PICO_ERROR_NO_DATA = -3,
PICO_ERROR_NOT_PERMITTED = -4,
PICO_ERROR_INVALID_ARG = -5,
PICO_ERROR_IO = -6,
}; };
#endif // !__ASSEMBLER__ #endif // !__ASSEMBLER__

4
src/rp2_common/CMakeLists.txt
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@ -58,6 +58,10 @@ if (NOT PICO_BARE_METAL)
pico_add_subdirectory(tinyusb) pico_add_subdirectory(tinyusb)
pico_add_subdirectory(pico_stdio_usb) pico_add_subdirectory(pico_stdio_usb)
pico_add_subdirectory(cyw43_driver)
pico_add_subdirectory(pico_lwip)
pico_add_subdirectory(pico_cyw43_arch)
pico_add_subdirectory(pico_stdlib) pico_add_subdirectory(pico_stdlib)
pico_add_subdirectory(pico_cxx_options) pico_add_subdirectory(pico_cxx_options)

81
src/rp2_common/cyw43_driver/CMakeLists.txt Normal file
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@ -0,0 +1,81 @@
if (DEFINED ENV{PICO_CYW43_DRIVER_PATH} AND (NOT PICO_CYW43_DRIVER_PATH))
set(PICO_CYW43_DRIVER_PATH $ENV{PICO_CYW43_DRIVER_PATH})
message("Using PICO_CYW43_DRIVER_PATH from environment ('${PICO_CYW43_DRIVER_PATH}')")
endif()
set(CYW43_DRIVER_TEST_FILE "src/cyw43.h")
if (NOT PICO_CYW43_DRIVER_PATH)
set(PICO_CYW43_DRIVER_PATH ${PICO_SDK_PATH}/lib/cyw43-driver)
if (PICO_CYW43_SUPPORTED AND NOT EXISTS ${PICO_CYW43_DRIVER_PATH}/${CYW43_DRIVER_TEST_FILE})
message(WARNING "cyw43-driver submodule has not been initialized; Pico W wireless support will be unavailable
hint: try 'git submodule update --init' from your SDK directory (${PICO_SDK_PATH}).")
endif()
elseif (NOT EXISTS ${PICO_CYW43_DRIVER_PATH}/${CYW43_DRIVER_TEST_FILE})
message(WARNING "PICO_CYW43_DRIVER_PATH specified but content not present.")
endif()
if (EXISTS ${PICO_CYW43_DRIVER_PATH}/${CYW43_DRIVER_TEST_FILE})
message("cyw43-driver available at ${PICO_CYW43_DRIVER_PATH}")
pico_register_common_scope_var(PICO_CYW43_DRIVER_PATH)
# base driver without our bus
add_library(cyw43_driver_base INTERFACE)
target_sources(cyw43_driver_base INTERFACE
${PICO_CYW43_DRIVER_PATH}/src/cyw43_ll.c
${PICO_CYW43_DRIVER_PATH}/src/cyw43_stats.c
${PICO_CYW43_DRIVER_PATH}/src/cyw43_lwip.c
${PICO_CYW43_DRIVER_PATH}/src/cyw43_ctrl.c
)
target_include_directories(cyw43_driver_base INTERFACE
${PICO_CYW43_DRIVER_PATH}/src
${PICO_CYW43_DRIVER_PATH}/firmware
)
# Build the driver for cyw43 for pico w
# Firmware stuff
set(CYW43_FIRMWARE_BIN 43439A0-7.95.49.00.combined)
string(REGEX REPLACE [\\\.\-] _ CYW43_FIRMWARE_BIN_ ${CYW43_FIRMWARE_BIN})
string(REGEX MATCH [^_]+_?[^_]*_?[^_]*_?[^_]*_?[^_]* CYW43_FIRMWARE_PRETTY ${CYW43_FIRMWARE_BIN_})
set(CYW43_FIRMWARE_PRETTY fw_${CYW43_FIRMWARE_PRETTY})
set(RESOURCE_SECNAME .big_const)
set(RESOURCE_SECFLAGS contents,alloc,load,readonly,data)
set(CYW43_FIRMWARE_OBJ ${CMAKE_CURRENT_BINARY_DIR}/cyw43_resource.o)
add_custom_target(cyw43_firmware_package DEPENDS ${CYW43_FIRMWARE_OBJ})
# cyw43_resource.o contains the WiFi and BT firmware as a binary blob
add_custom_command(
OUTPUT ${CYW43_FIRMWARE_OBJ}
DEPENDS ${PICO_CYW43_DRIVER_PATH}/firmware/${CYW43_FIRMWARE_BIN}
WORKING_DIRECTORY ${PICO_CYW43_DRIVER_PATH}/firmware
COMMAND ${CMAKE_OBJCOPY} -I binary -O elf32-littlearm -B arm
--readonly-text
--rename-section .data=${RESOURCE_SECNAME},${RESOURCE_SECFLAGS}
--redefine-sym _binary_${CYW43_FIRMWARE_BIN_}_start=${CYW43_FIRMWARE_PRETTY}_start
--redefine-sym _binary_${CYW43_FIRMWARE_BIN_}_end=${CYW43_FIRMWARE_PRETTY}_end
--redefine-sym _binary_${CYW43_FIRMWARE_BIN_}_size=${CYW43_FIRMWARE_PRETTY}_size
${CYW43_FIRMWARE_BIN} ${CYW43_FIRMWARE_OBJ}
)
add_library(cyw43_driver_picow INTERFACE)
target_sources(cyw43_driver_picow INTERFACE
${CMAKE_CURRENT_LIST_DIR}/cyw43_bus_pio_spi.c
)
pico_generate_pio_header(cyw43_driver_picow ${CMAKE_CURRENT_LIST_DIR}/cyw43_bus_pio_spi.pio)
add_dependencies(cyw43_driver_picow INTERFACE cyw43_firmware_package)
target_link_libraries(cyw43_driver_picow INTERFACE
${CYW43_FIRMWARE_OBJ}
)
target_link_libraries(cyw43_driver_picow INTERFACE
cyw43_driver_base
pico_stdlib
hardware_pio
hardware_dma
hardware_exception
)
pico_promote_common_scope_vars()
endif()

545
src/rp2_common/cyw43_driver/cyw43_bus_pio_spi.c Normal file
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@ -0,0 +1,545 @@
/*
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "hardware/pio.h"
#include "hardware/clocks.h"
#include "hardware/structs/iobank0.h"
#include "hardware/sync.h"
#include "hardware/dma.h"
#include "cyw43_bus_pio_spi.pio.h"
#include "cyw43.h"
#include "cyw43_internal.h"
#include "cyw43_spi.h"
#include "cyw43_debug_pins.h"
#if CYW43_SPI_PIO
#define WL_REG_ON 23
#define DATA_OUT_PIN 24u
#define DATA_IN_PIN 24u
#define IRQ_PIN 24u
// #define MONITOR_PIN 3u
#define CLOCK_PIN 29u
#define CS_PIN 25u
#define IRQ_SAMPLE_DELAY_NS 100
#define SPI_PROGRAM_NAME spi_gap01_sample0
#define SPI_PROGRAM_FUNC __CONCAT(SPI_PROGRAM_NAME, _program)
#define SPI_PROGRAM_GET_DEFAULT_CONFIG_FUNC __CONCAT(SPI_PROGRAM_NAME, _program_get_default_config)
#define SPI_OFFSET_END __CONCAT(SPI_PROGRAM_NAME, _offset_end)
#define SPI_OFFSET_LP1_END __CONCAT(SPI_PROGRAM_NAME, _offset_lp1_end)
#define CLOCK_DIV 2
#define CLOCK_DIV_MINOR 0
#define PADS_DRIVE_STRENGTH PADS_BANK0_GPIO0_DRIVE_VALUE_12MA
#if !CYW43_USE_SPI
#error CYW43_USE_SPI should be true
#endif
#ifndef NDEBUG
//#define ENABLE_SPI_DUMPING 1
#endif
// Set to 1 to enable
#if ENABLE_SPI_DUMPING //NDEBUG
#if 0
#define DUMP_SPI_TRANSACTIONS(A) A
#else
static bool enable_spi_packet_dumping; // set to true to dump
#define DUMP_SPI_TRANSACTIONS(A) if (enable_spi_packet_dumping) {A}
#endif
static uint32_t counter = 0;
#else
#define DUMP_SPI_TRANSACTIONS(A)
#endif
//#define SWAP32(A) ((((A) & 0xff000000U) >> 8) | (((A) & 0xff0000U) << 8) | (((A) & 0xff00U) >> 8) | (((A) & 0xffU) << 8))
__force_inline static uint32_t __swap16x2(uint32_t a) {
__asm ("rev16 %0, %0" : "+l" (a) : : );
return a;
}
#define SWAP32(a) __swap16x2(a)
#ifndef CYW43_SPI_PIO_PREFERRED_PIO
#define CYW43_SPI_PIO_PREFERRED_PIO 1
#endif
static_assert(CYW43_SPI_PIO_PREFERRED_PIO >=0 && CYW43_SPI_PIO_PREFERRED_PIO < NUM_PIOS, "");
typedef struct {
pio_hw_t *pio;
uint8_t pio_func_sel;
int8_t pio_offset;
int8_t pio_sm;
int8_t dma_out;
int8_t dma_in;
} bus_data_t;
static bus_data_t bus_data_instance;
int cyw43_spi_init(cyw43_int_t *self) {
// Only does something if CYW43_LOGIC_DEBUG=1
logic_debug_init();
static_assert(NUM_PIOS == 2, "");
pio_hw_t *pios[2] = {pio0, pio1};
uint pio_index = CYW43_SPI_PIO_PREFERRED_PIO;
// Check we can add the program
if (!pio_can_add_program(pios[pio_index], &SPI_PROGRAM_FUNC)) {
pio_index ^= 1;
if (!pio_can_add_program(pios[pio_index], &SPI_PROGRAM_FUNC)) {
return CYW43_FAIL_FAST_CHECK(-CYW43_EIO);
}
}
assert(!self->bus_data);
self->bus_data = &bus_data_instance;
bus_data_t *bus_data = (bus_data_t *)self->bus_data;
bus_data->pio = pios[pio_index];
bus_data->dma_in = -1;
bus_data->dma_out = -1;
static_assert(GPIO_FUNC_PIO1 == GPIO_FUNC_PIO0 + 1, "");
bus_data->pio_func_sel = GPIO_FUNC_PIO0 + pio_index;
bus_data->pio_sm = (int8_t)pio_claim_unused_sm(bus_data->pio, false);
if (bus_data->pio_sm < 0) {
cyw43_spi_deinit(self);
return CYW43_FAIL_FAST_CHECK(-CYW43_EIO);
}
bus_data->pio_offset = pio_add_program(bus_data->pio, &SPI_PROGRAM_FUNC);
pio_sm_config config = SPI_PROGRAM_GET_DEFAULT_CONFIG_FUNC(bus_data->pio_offset);
sm_config_set_clkdiv_int_frac(&config, CLOCK_DIV, CLOCK_DIV_MINOR);
hw_write_masked(&padsbank0_hw->io[CLOCK_PIN],
(uint)PADS_DRIVE_STRENGTH << PADS_BANK0_GPIO0_DRIVE_LSB,
PADS_BANK0_GPIO0_DRIVE_BITS
);
hw_write_masked(&padsbank0_hw->io[CLOCK_PIN],
(uint)1 << PADS_BANK0_GPIO0_SLEWFAST_LSB,
PADS_BANK0_GPIO0_SLEWFAST_BITS
);
sm_config_set_out_pins(&config, DATA_OUT_PIN, 1);
sm_config_set_in_pins(&config, DATA_IN_PIN);
sm_config_set_set_pins(&config, DATA_OUT_PIN, 1);
sm_config_set_sideset(&config, 1, false, false);
sm_config_set_sideset_pins(&config, CLOCK_PIN);
sm_config_set_in_shift(&config, false, true, 32);
sm_config_set_out_shift(&config, false, true, 32);
hw_set_bits(&bus_data->pio->input_sync_bypass, 1u << DATA_IN_PIN);
pio_sm_set_config(bus_data->pio, bus_data->pio_sm, &config);
pio_sm_set_consecutive_pindirs(bus_data->pio, bus_data->pio_sm, CLOCK_PIN, 1, true);
gpio_set_function(DATA_OUT_PIN, bus_data->pio_func_sel);
gpio_set_function(CLOCK_PIN, bus_data->pio_func_sel);
// Set data pin to pull down and schmitt
gpio_set_pulls(DATA_IN_PIN, false, true);
gpio_set_input_hysteresis_enabled(DATA_IN_PIN, true);
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_set(pio_pins, 1));
bus_data->dma_out = (int8_t) dma_claim_unused_channel(false);
bus_data->dma_in = (int8_t) dma_claim_unused_channel(false);
if (bus_data->dma_out < 0 || bus_data->dma_in < 0) {
cyw43_spi_deinit(self);
return CYW43_FAIL_FAST_CHECK(-CYW43_EIO);
}
return 0;
}
void cyw43_spi_deinit(cyw43_int_t *self) {
if (self->bus_data) {
bus_data_t *bus_data = (bus_data_t *)self->bus_data;
if (bus_data->pio_sm >= 0) {
if (bus_data->pio_offset != -1)
pio_remove_program(bus_data->pio, &SPI_PROGRAM_FUNC, bus_data->pio_offset);
pio_sm_unclaim(bus_data->pio, bus_data->pio_sm);
}
if (bus_data->dma_out >= 0) {
dma_channel_unclaim(bus_data->dma_out);
bus_data->dma_out = -1;
}
if (bus_data->dma_in >= 0) {
dma_channel_unclaim(bus_data->dma_in);
bus_data->dma_in = -1;
}
self->bus_data = NULL;
}
}
static void cs_set(bool value) {
gpio_put(CS_PIN, value);
}
static __noinline void ns_delay(uint32_t ns) {
// cycles = ns * clk_sys_hz / 1,000,000,000
uint32_t cycles = ns * (clock_get_hz(clk_sys) >> 16u) / (1000000000u >> 16u);
busy_wait_at_least_cycles(cycles);
}
static void start_spi_comms(cyw43_int_t *self) {
bus_data_t *bus_data = (bus_data_t *)self->bus_data;
// Pull CS low
cs_set(false);
gpio_set_function(DATA_OUT_PIN, bus_data->pio_func_sel);
}
// we need to atomically de-assert CS and enable IRQ
static void stop_spi_comms(void) {
// from this point a positive edge will cause an IRQ to be pending
cs_set(true);
// we need to wait a bit in case the irq line is incorrectly high
ns_delay(IRQ_SAMPLE_DELAY_NS);
}
#if ENABLE_SPI_DUMPING
static void dump_bytes(const uint8_t *bptr, uint32_t len) {
unsigned int i = 0;
for (i = 0; i < len;) {
if ((i & 0x0f) == 0) {
printf("\n");
} else if ((i & 0x07) == 0) {
printf(" ");
}
printf("%02x ", bptr[i++]);
}
printf("\n");
}
#endif
int cyw43_spi_transfer(cyw43_int_t *self, const uint8_t *tx, size_t tx_length, uint8_t *rx,
size_t rx_length) {
if ((tx == NULL) && (rx == NULL)) {
return CYW43_FAIL_FAST_CHECK(-CYW43_EINVAL);
}
bus_data_t *bus_data = (bus_data_t *)self->bus_data;
start_spi_comms(self);
if (rx != NULL) {
if (tx == NULL) {
tx = rx;
assert(tx_length && tx_length < rx_length);
}
DUMP_SPI_TRANSACTIONS(
printf("[%lu] bus TX/RX %u bytes rx %u:", counter++, tx_length, rx_length);
dump_bytes(tx, tx_length);
)
assert(!(tx_length & 3));
assert(!(((uintptr_t)tx) & 3));
assert(!(((uintptr_t)rx) & 3));
assert(!(rx_length & 3));
pio_sm_set_enabled(bus_data->pio, bus_data->pio_sm, false);
pio_sm_set_wrap(bus_data->pio, bus_data->pio_sm, bus_data->pio_offset, bus_data->pio_offset + SPI_OFFSET_END - 1);
pio_sm_clear_fifos(bus_data->pio, bus_data->pio_sm);
pio_sm_set_pindirs_with_mask(bus_data->pio, bus_data->pio_sm, 1u << DATA_OUT_PIN, 1u << DATA_OUT_PIN);
pio_sm_restart(bus_data->pio, bus_data->pio_sm);
pio_sm_clkdiv_restart(bus_data->pio, bus_data->pio_sm);
pio_sm_put(bus_data->pio, bus_data->pio_sm, tx_length * 8 - 1);
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_out(pio_x, 32));
pio_sm_put(bus_data->pio, bus_data->pio_sm, (rx_length - tx_length) * 8 - 1);
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_out(pio_y, 32));
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_jmp(bus_data->pio_offset));
dma_channel_abort(bus_data->dma_out);
dma_channel_abort(bus_data->dma_in);
dma_channel_config out_config = dma_channel_get_default_config(bus_data->dma_out);
channel_config_set_bswap(&out_config, true);
channel_config_set_dreq(&out_config, pio_get_dreq(bus_data->pio, 0, true));
dma_channel_configure(bus_data->dma_out, &out_config, &bus_data->pio->txf[0], tx, tx_length / 4, true);
dma_channel_config in_config = dma_channel_get_default_config(bus_data->dma_in);
channel_config_set_bswap(&in_config, true);
channel_config_set_dreq(&in_config, pio_get_dreq(bus_data->pio, 0, false));
channel_config_set_write_increment(&in_config, true);
channel_config_set_read_increment(&in_config, false);
dma_channel_configure(bus_data->dma_in, &in_config, rx + tx_length, &bus_data->pio->rxf[0], rx_length / 4 - tx_length / 4, true);
pio_sm_set_enabled(bus_data->pio, bus_data->pio_sm, true);
__compiler_memory_barrier();
dma_channel_wait_for_finish_blocking(bus_data->dma_out);
dma_channel_wait_for_finish_blocking(bus_data->dma_in);
__compiler_memory_barrier();
memset(rx, 0, tx_length); // make sure we don't have garbage in what would have been returned data if using real SPI
} else if (tx != NULL) {
DUMP_SPI_TRANSACTIONS(
printf("[%lu] bus TX only %u bytes:", counter++, tx_length);
dump_bytes(tx, tx_length);
)
assert(!(((uintptr_t)tx) & 3));
assert(!(tx_length & 3));
pio_sm_set_enabled(bus_data->pio, bus_data->pio_sm, false);
pio_sm_set_wrap(bus_data->pio, bus_data->pio_sm, bus_data->pio_offset, bus_data->pio_offset + SPI_OFFSET_LP1_END - 1);
pio_sm_clear_fifos(bus_data->pio, bus_data->pio_sm);
pio_sm_set_pindirs_with_mask(bus_data->pio, bus_data->pio_sm, 1u << DATA_OUT_PIN, 1u << DATA_OUT_PIN);
pio_sm_restart(bus_data->pio, bus_data->pio_sm);
pio_sm_clkdiv_restart(bus_data->pio, bus_data->pio_sm);
pio_sm_put(bus_data->pio, bus_data->pio_sm, tx_length * 8 - 1);
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_out(pio_x, 32));
pio_sm_put(bus_data->pio, bus_data->pio_sm, 0);
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_out(pio_y, 32));
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_jmp(bus_data->pio_offset));
dma_channel_abort(bus_data->dma_out);
dma_channel_config out_config = dma_channel_get_default_config(bus_data->dma_out);
channel_config_set_bswap(&out_config, true);
channel_config_set_dreq(&out_config, pio_get_dreq(bus_data->pio, 0, true));
dma_channel_configure(bus_data->dma_out, &out_config, &bus_data->pio->txf[0], tx, tx_length / 4, true);
bus_data->pio->fdebug = 1u << PIO_FDEBUG_TXSTALL_LSB;
pio_sm_set_enabled(bus_data->pio, 0, true);
while (!(bus_data->pio->fdebug & (1u << PIO_FDEBUG_TXSTALL_LSB))) {
tight_loop_contents(); // todo timeout
}
__compiler_memory_barrier();
pio_sm_set_enabled(bus_data->pio, bus_data->pio_sm, false);
pio_sm_set_consecutive_pindirs(bus_data->pio, bus_data->pio_sm, DATA_IN_PIN, 1, false);
} else if (rx != NULL) { /* currently do one at a time */
DUMP_SPI_TRANSACTIONS(
printf("[%lu] bus TX %u bytes:", counter++, rx_length);
dump_bytes(rx, rx_length);
)
panic_unsupported();
}
pio_sm_exec(bus_data->pio, bus_data->pio_sm, pio_encode_mov(pio_pins, pio_null)); // for next time we turn output on
stop_spi_comms();
DUMP_SPI_TRANSACTIONS(
printf("RXed:");
dump_bytes(rx, rx_length);
printf("\n");
)
return 0;
}
// Initialise our gpios
void cyw43_spi_gpio_setup(void) {
// Setup WL_REG_ON (23)
gpio_init(WL_REG_ON);
gpio_set_dir(WL_REG_ON, GPIO_OUT);
gpio_pull_up(WL_REG_ON);
// Setup DO, DI and IRQ (24)
gpio_init(DATA_OUT_PIN);
gpio_set_dir(DATA_OUT_PIN, GPIO_OUT);
gpio_put(DATA_OUT_PIN, false);
// Setup CS (25)
gpio_init(CS_PIN);
gpio_set_dir(CS_PIN, GPIO_OUT);
gpio_put(CS_PIN, true);
}
// Reset wifi chip
void cyw43_spi_reset(void) {
gpio_put(WL_REG_ON, false); // off
sleep_ms(20);
gpio_put(WL_REG_ON, true); // on
sleep_ms(250);
// Setup IRQ (24) - also used for DO, DI
gpio_init(IRQ_PIN);
gpio_set_dir(IRQ_PIN, GPIO_IN);
}
static inline uint32_t make_cmd(bool write, bool inc, uint32_t fn, uint32_t addr, uint32_t sz) {
return write << 31 | inc << 30 | fn << 28 | (addr & 0x1ffff) << 11 | sz;
}
#if CYW43_VERBOSE_DEBUG
static const char *func_name(int fn) {
switch (fn)
{
case BUS_FUNCTION:
return "BUS_FUNCTION";
case BACKPLANE_FUNCTION:
return "BACKPLANE_FUNCTION";
case WLAN_FUNCTION:
return "WLAN_FUNCTION";
default:
return "UNKNOWN";
}
}
#endif
uint32_t read_reg_u32_swap(cyw43_int_t *self, uint32_t fn, uint32_t reg) {
uint32_t buf[2] = {0};
assert(fn != BACKPLANE_FUNCTION);
buf[0] = SWAP32(make_cmd(false, true, fn, reg, 4));
int ret = cyw43_spi_transfer(self, NULL, 4, (uint8_t *)buf, 8);
if (ret != 0) {
return ret;
}
return SWAP32(buf[1]);
}
static inline uint32_t _cyw43_read_reg(cyw43_int_t *self, uint32_t fn, uint32_t reg, uint size) {
// Padding plus max read size of 32 bits + another 4?
static_assert(WHD_BUS_SPI_BACKPLANE_READ_PADD_SIZE % 4 == 0, "");
uint32_t buf32[WHD_BUS_SPI_BACKPLANE_READ_PADD_SIZE/4 + 1 + 1];
uint8_t *buf = (uint8_t *)buf32;
const uint32_t padding = (fn == BACKPLANE_FUNCTION) ? WHD_BUS_SPI_BACKPLANE_READ_PADD_SIZE : 0; // Add response delay
buf32[0] = make_cmd(false, true, fn, reg, size + padding);
if (fn == BACKPLANE_FUNCTION) {
logic_debug_set(pin_BACKPLANE_READ, 1);
}
int ret = cyw43_spi_transfer(self, NULL, 4, buf, 8 + padding);
if (fn == BACKPLANE_FUNCTION) {
logic_debug_set(pin_BACKPLANE_READ, 0);
}
if (ret != 0) {
return ret;
}
uint32_t result = buf32[padding > 0 ? 2 : 1];
CYW43_VDEBUG("cyw43_read_reg_u%d %s 0x%lx=0x%lx\n", size * 8, func_name(fn), reg, result);
return result;
}
uint32_t cyw43_read_reg_u32(cyw43_int_t *self, uint32_t fn, uint32_t reg) {
return _cyw43_read_reg(self, fn, reg, 4);
}
int cyw43_read_reg_u16(cyw43_int_t *self, uint32_t fn, uint32_t reg) {
return _cyw43_read_reg(self, fn, reg, 2);
}
int cyw43_read_reg_u8(cyw43_int_t *self, uint32_t fn, uint32_t reg) {
return _cyw43_read_reg(self, fn, reg, 1);
}
// This is only used to switch the word order on boot
int write_reg_u32_swap(cyw43_int_t *self, uint32_t fn, uint32_t reg, uint32_t val) {
uint32_t buf[2];
// Boots up in little endian so command needs swapping too
buf[0] = SWAP32(make_cmd(true, true, fn, reg, 4));
buf[1] = SWAP32(val);
int ret = cyw43_spi_transfer(self, (uint8_t *)buf, 8, NULL, 0);
CYW43_VDEBUG("write_reg_u32_swap %s 0x%lx=0x%lx\n", func_name(fn), reg, val);
return ret;
}
static inline int _cyw43_write_reg(cyw43_int_t *self, uint32_t fn, uint32_t reg, uint32_t val, uint size) {
uint32_t buf[2];
buf[0] = make_cmd(true, true, fn, reg, size);
buf[1] = val;
if (fn == BACKPLANE_FUNCTION) {
// In case of f1 overflow
self->last_size = 8;
self->last_header[0] = buf[0];
self->last_header[1] = buf[1];
self->last_backplane_window = self->cur_backplane_window;
}
if (fn == BACKPLANE_FUNCTION) {
logic_debug_set(pin_BACKPLANE_WRITE, 1);
}
int ret = cyw43_spi_transfer(self, (uint8_t *)buf, 8, NULL, 0);
if (fn == BACKPLANE_FUNCTION) {
logic_debug_set(pin_BACKPLANE_WRITE, 0);
}
CYW43_VDEBUG("cyw43_write_reg_u%d %s 0x%lx=0x%lx\n", size * 8, func_name(fn), reg, val);
return ret;
}
int cyw43_write_reg_u32(cyw43_int_t *self, uint32_t fn, uint32_t reg, uint32_t val) {
return _cyw43_write_reg(self, fn, reg, val, 4);
}
int cyw43_write_reg_u16(cyw43_int_t *self, uint32_t fn, uint32_t reg, uint16_t val) {
return _cyw43_write_reg(self, fn, reg, val, 2);
}
int cyw43_write_reg_u8(cyw43_int_t *self, uint32_t fn, uint32_t reg, uint32_t val) {
return _cyw43_write_reg(self, fn, reg, val, 1);
}
#if MAX_BLOCK_SIZE > 0x7f8
#error Block size is wrong for SPI
#endif
// Assumes we're reading into spid_buf
int cyw43_read_bytes(cyw43_int_t *self, uint32_t fn, uint32_t addr, size_t len, uint8_t *buf) {
assert(fn != BACKPLANE_FUNCTION || (len <= 64 && (addr + len) <= 0x8000));
const uint32_t padding = (fn == BACKPLANE_FUNCTION) ? 4 : 0; // Add response delay
size_t aligned_len = (len + 3) & ~3;
assert(aligned_len > 0 && aligned_len <= 0x7f8);
self->spi_header[padding > 0 ? 0 : 1] = make_cmd(false, true, fn, addr, len + padding);
if (fn == WLAN_FUNCTION) {
logic_debug_set(pin_WIFI_RX, 1);
}
int ret = cyw43_spi_transfer(self, NULL, 4, (uint8_t *)&self->spi_header[padding > 0 ? 0 : 1], aligned_len + 4 + padding);
if (fn == WLAN_FUNCTION) {
logic_debug_set(pin_WIFI_RX, 0);
}
if (ret != 0) {
printf("cyw43_read_bytes error %d", ret);
return ret;
}
if (buf != self->spid_buf) { // avoid a copy in the usual case just to add the header
memcpy(buf, self->spid_buf, len);
}
return 0;
}
// See whd_bus_spi_transfer_bytes
// Note, uses spid_buf if src isn't using it already
// Apart from firmware download this appears to only be used for wlan functions?
int cyw43_write_bytes(cyw43_int_t *self, uint32_t fn, uint32_t addr, size_t len, const uint8_t *src) {
assert(fn != BACKPLANE_FUNCTION || (len <= 64 && (addr + len) <= 0x8000));
size_t aligned_len = (len + 3) & ~3u;
assert(aligned_len > 0 && aligned_len <= 0x7f8);
if (fn == WLAN_FUNCTION) {
// Wait for FIFO to be ready to accept data
int f2_ready_attempts = 1000;
while (f2_ready_attempts-- > 0) {
uint32_t bus_status = cyw43_read_reg_u32(self, BUS_FUNCTION, SPI_STATUS_REGISTER);
if (bus_status & STATUS_F2_RX_READY) {
logic_debug_set(pin_F2_RX_READY_WAIT, 0);
break;
} else {
logic_debug_set(pin_F2_RX_READY_WAIT, 1);
}
}
if (f2_ready_attempts <= 0) {
printf("F2 not ready\n");
return CYW43_FAIL_FAST_CHECK(-CYW43_EIO);
}
}
if (src == self->spid_buf) { // avoid a copy in the usual case just to add the header
self->spi_header[1] = make_cmd(true, true, fn, addr, len);
logic_debug_set(pin_WIFI_TX, 1);
int res = cyw43_spi_transfer(self, (uint8_t *)&self->spi_header[1], aligned_len + 4, NULL, 0);
logic_debug_set(pin_WIFI_TX, 0);
return res;
} else {
// todo: would be nice to get rid of this. Only used for firmware download?
assert(src < self->spid_buf || src >= (self->spid_buf + sizeof(self->spid_buf)));
self->spi_header[1] = make_cmd(true, true, fn, addr, len);
memcpy(self->spid_buf, src, len);
return cyw43_spi_transfer(self, (uint8_t *)&self->spi_header[1], aligned_len + 4, NULL, 0);
}
}
#endif

61
src/rp2_common/cyw43_driver/cyw43_bus_pio_spi.pio Normal file
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@ -0,0 +1,61 @@
;
; Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
;
; SPDX-License-Identifier: BSD-3-Clause
;
.program spi_gap0_sample1
.side_set 1
; always transmit multiple of 32 bytes
lp: out pins, 1 side 0
jmp x-- lp side 1
public lp1_end:
set pindirs, 0 side 0
lp2:
in pins, 1 side 1
jmp y-- lp2 side 0
public end:
.program spi_gap01_sample0
.side_set 1
; always transmit multiple of 32 bytes
lp: out pins, 1 side 0
jmp x-- lp side 1
public lp1_end:
set pindirs, 0 side 0
nop side 1
lp2:
in pins, 1 side 0
jmp y-- lp2 side 1
public end:
.program spi_gap010_sample1
.side_set 1
; always transmit multiple of 32 bytes
lp: out pins, 1 side 0
jmp x-- lp side 1
public lp1_end:
set pindirs, 0 side 0
nop side 1
nop side 0
lp2:
in pins, 1 side 1
jmp y-- lp2 side 0
public end:
.program spi_gap0_sample1_regular
.side_set 1
; always transmit multiple of 32 bytes
lp: out pins, 1 side 0
jmp x-- lp side 1
public lp1_end:
set pindirs, 0 side 0
lp2:
in pins, 1 side 1
jmp y-- lp2 side 0
public end:

6
src/rp2_common/hardware_dma/dma.c
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@ -36,6 +36,12 @@ void dma_channel_unclaim(uint channel) {
hw_claim_clear((uint8_t *) &_claimed, channel); hw_claim_clear((uint8_t *) &_claimed, channel);
} }
void dma_unclaim_mask(uint32_t mask) {
for(uint i = 0; mask; i++, mask >>= 1u) {
if (mask & 1u) dma_channel_unclaim(i);
}
}
int dma_claim_unused_channel(bool required) { int dma_claim_unused_channel(bool required) {
return hw_claim_unused_from_range((uint8_t*)&_claimed, required, 0, NUM_DMA_CHANNELS-1, "No DMA channels are available"); return hw_claim_unused_from_range((uint8_t*)&_claimed, required, 0, NUM_DMA_CHANNELS-1, "No DMA channels are available");
} }

9
src/rp2_common/hardware_dma/include/hardware/dma.h
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@ -88,12 +88,17 @@ void dma_claim_mask(uint32_t channel_mask);
/*! \brief Mark a dma channel as no longer used /*! \brief Mark a dma channel as no longer used
* \ingroup hardware_dma * \ingroup hardware_dma
* *
* Method for cooperative claiming of hardware.
*
* \param channel the dma channel to release * \param channel the dma channel to release
*/ */
void dma_channel_unclaim(uint channel); void dma_channel_unclaim(uint channel);
/*! \brief Mark multiple dma channels as no longer used
* \ingroup hardware_dma
*
* \param channel_mask Bitfield of all channels to unclaim (bit 0 == channel 0, bit 1 == channel 1 etc)
*/
void dma_unclaim_mask(uint32_t channel_mask);
/*! \brief Claim a free dma channel /*! \brief Claim a free dma channel
* \ingroup hardware_dma * \ingroup hardware_dma
* *

66
src/rp2_common/pico_cyw43_arch/CMakeLists.txt Normal file
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@ -0,0 +1,66 @@
if (PICO_CYW43_SUPPORTED) # set by BOARD=pico-w
if (TARGET cyw43_driver_picow)
message("Enabling build support for Pico W wireless.")
pico_add_impl_library(pico_cyw43_arch)
target_sources(pico_cyw43_arch INTERFACE
${CMAKE_CURRENT_LIST_DIR}/cyw43_arch.c
${CMAKE_CURRENT_LIST_DIR}/cyw43_arch_poll.c
${CMAKE_CURRENT_LIST_DIR}/cyw43_arch_threadsafe_background.c
${CMAKE_CURRENT_LIST_DIR}/cyw43_arch_freertos.c
)
target_include_directories(pico_cyw43_arch INTERFACE
${CMAKE_CURRENT_LIST_DIR}/include)
target_link_libraries(pico_cyw43_arch INTERFACE
pico_unique_id
cyw43_driver_picow)
if (NOT TARGET pico_lwip)
message(WARNING "lwIP is not available; Full Pico W wireless support will be unavailable too")
else()
add_library(pico_cyw43_arch_lwip_poll INTERFACE)
target_link_libraries(pico_cyw43_arch_lwip_poll INTERFACE
pico_cyw43_arch
pico_lwip
pico_lwip_nosys)
target_compile_definitions(pico_cyw43_arch_lwip_poll INTERFACE
CYW43_LWIP=1
PICO_CYW43_ARCH_POLL=1
)
add_library(pico_cyw43_arch_lwip_threadsafe_background INTERFACE)
target_link_libraries(pico_cyw43_arch_lwip_threadsafe_background INTERFACE
pico_cyw43_arch
pico_lwip
pico_lwip_nosys)
target_compile_definitions(pico_cyw43_arch_lwip_threadsafe_background INTERFACE
CYW43_LWIP=1
PICO_CYW43_ARCH_THREADSAFE_BACKGROUND=1
)
add_library(pico_cyw43_arch_lwip_sys_freertos INTERFACE)
target_link_libraries(pico_cyw43_arch_lwip_sys_freertos INTERFACE
pico_cyw43_arch
pico_lwip
pico_lwip_contrib_freertos)
target_compile_definitions(pico_cyw43_arch_lwip_sys_freertos INTERFACE
CYW43_LWIP=1
LWIP_PROVIDE_ERRNO=1
PICO_CYW43_ARCH_FREERTOS=1
)
endif()
add_library(pico_cyw43_arch_none INTERFACE)
target_link_libraries(pico_cyw43_arch_none INTERFACE pico_cyw43_arch)
target_compile_definitions(pico_cyw43_arch_none INTERFACE
CYW43_LWIP=0
PICO_CYW43_ARCH_THREADSAFE_BACKGROUND=1 # none still uses threadsafe_background to make gpio use easy
)
endif()
endif()
if (PICO_CYW43_DRIVER_PATH AND EXISTS "${PICO_CYW43_DRIVER_PATH}")
pico_add_doxygen(${PICO_CYW43_DRIVER_PATH}/src)
endif()

145
src/rp2_common/pico_cyw43_arch/cyw43_arch.c Normal file
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@ -0,0 +1,145 @@
/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "pico/unique_id.h"
#include "cyw43.h"
#include "pico/cyw43_arch.h"
#include "cyw43_ll.h"
#include "cyw43_stats.h"
#if CYW43_ARCH_DEBUG_ENABLED
#define CYW43_ARCH_DEBUG(...) printf(__VA_ARGS__)
#else
#define CYW43_ARCH_DEBUG(...) ((void)0)
#endif
static uint32_t country_code = PICO_CYW43_ARCH_DEFAULT_COUNTRY_CODE;
void cyw43_arch_enable_sta_mode() {
assert(cyw43_is_initialized(&cyw43_state));
cyw43_wifi_set_up(&cyw43_state, CYW43_ITF_STA, true, cyw43_arch_get_country_code());
}
void cyw43_arch_enable_ap_mode(const char *ssid, const char *password, uint32_t auth) {
assert(cyw43_is_initialized(&cyw43_state));
cyw43_wifi_ap_set_ssid(&cyw43_state, strlen(ssid), (const uint8_t *) ssid);
if (password) {
cyw43_wifi_ap_set_password(&cyw43_state, strlen(password), (const uint8_t *) password);
cyw43_wifi_ap_set_auth(&cyw43_state, auth);
} else {
cyw43_wifi_ap_set_auth(&cyw43_state, CYW43_AUTH_OPEN);
}
cyw43_wifi_set_up(&cyw43_state, CYW43_ITF_AP, true, cyw43_arch_get_country_code());
}
#if CYW43_ARCH_DEBUG_ENABLED
// Return a string for the wireless state
static const char* status_name(int status)
{
switch (status) {
case CYW43_LINK_DOWN:
return "link down";
case CYW43_LINK_JOIN:
return "joining";
case CYW43_LINK_NOIP:
return "no ip";
case CYW43_LINK_UP:
return "link up";
case CYW43_LINK_FAIL:
return "link fail";
case CYW43_LINK_NONET:
return "network fail";
case CYW43_LINK_BADAUTH:
return "bad auth";
}
return "unknown";
}
#endif
int cyw43_arch_wifi_connect_async(const char *ssid, const char *pw, uint32_t auth) {
if (!pw) auth = CYW43_AUTH_OPEN;
// Connect to wireless
return cyw43_wifi_join(&cyw43_state, strlen(ssid), (const uint8_t *)ssid, pw ? strlen(pw) : 0, (const uint8_t *)pw, auth, NULL, CYW43_ITF_STA);
}
// Connect to wireless, return with success when an IP address has been assigned
int cyw43_arch_wifi_connect_until(const char *ssid, const char *pw, uint32_t auth, absolute_time_t until) {
int err = cyw43_arch_wifi_connect_async(ssid, pw, auth);
if (err) return err;
int status = CYW43_LINK_UP + 1;
while(status >= 0 && status != CYW43_LINK_UP) {
int new_status = cyw43_tcpip_link_status(&cyw43_state, CYW43_ITF_STA);
if (new_status != status) {
status = new_status;
CYW43_ARCH_DEBUG("connect status: %s\n", status_name(status));
}
// in case polling is required
cyw43_arch_poll();
best_effort_wfe_or_timeout(until);
if (time_reached(until)) {
return PICO_ERROR_TIMEOUT;
}
}
return status == CYW43_LINK_UP ? 0 : status;
}
int cyw43_arch_wifi_connect_blocking(const char *ssid, const char *pw, uint32_t auth) {
return cyw43_arch_wifi_connect_until(ssid, pw, auth, at_the_end_of_time);
}
int cyw43_arch_wifi_connect_timeout_ms(const char *ssid, const char *pw, uint32_t auth, uint32_t timeout_ms) {
return cyw43_arch_wifi_connect_until(ssid, pw, auth, make_timeout_time_ms(timeout_ms));
}
// todo maybe add an #ifdef in cyw43_driver
uint32_t storage_read_blocks(__unused uint8_t *dest, __unused uint32_t block_num, __unused uint32_t num_blocks) {
// shouldn't be used
panic_unsupported();
}
// Generate a mac address if one is not set in otp
void cyw43_hal_generate_laa_mac(__unused int idx, uint8_t buf[6]) {
CYW43_DEBUG("Warning. No mac in otp. Generating mac from board id\n");
pico_unique_board_id_t board_id;
pico_get_unique_board_id(&board_id);
memcpy(buf, &board_id.id[2], 6);
buf[0] &= (uint8_t)~0x1; // unicast
buf[0] |= 0x2; // locally administered
}
// Return mac address
void cyw43_hal_get_mac(__unused int idx, uint8_t buf[6]) {
// The mac should come from cyw43 otp.
// This is loaded into the state after the driver is initialised
// cyw43_hal_generate_laa_mac is called by the driver to generate a mac if otp is not set
memcpy(buf, cyw43_state.mac, 6);
}
uint32_t cyw43_arch_get_country_code(void) {
return country_code;
}
int cyw43_arch_init_with_country(uint32_t country) {
country_code = country;
return cyw43_arch_init();
}
void cyw43_arch_gpio_put(uint wl_gpio, bool value) {
invalid_params_if(CYW43_ARCH, wl_gpio >= CYW43_WL_GPIO_COUNT);
cyw43_gpio_set(&cyw43_state, (int)wl_gpio, value);
}
bool cyw43_arch_gpio_get(uint wl_gpio) {
invalid_params_if(CYW43_ARCH, wl_gpio >= CYW43_WL_GPIO_COUNT);
bool value = false;
cyw43_gpio_get(&cyw43_state, (int)wl_gpio, &value);
return value;
}

251
src/rp2_common/pico_cyw43_arch/cyw43_arch_freertos.c Normal file
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@ -0,0 +1,251 @@
/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdio.h>
#include "pico/cyw43_arch.h"
#include "hardware/gpio.h"
#include "hardware/irq.h"
#include "hardware/sync.h"
#include "cyw43_stats.h"
#if CYW43_LWIP
#include <lwip/tcpip.h>
#endif
#if PICO_CYW43_ARCH_FREERTOS
// FreeRTOS includes
#include "FreeRTOS.h"
#include "timers.h"
#include "semphr.h"
#if NO_SYS
#error example_cyw43_arch_frertos_sys requires NO_SYS=0
#endif
#ifndef CYW43_TASK_PRIORITY
#define CYW43_TASK_PRIORITY ( tskIDLE_PRIORITY + 4)
#endif
#ifndef CYW43_SLEEP_CHECK_MS
#define CYW43_SLEEP_CHECK_MS 50 // How often to run lwip callback
#endif
#define CYW43_GPIO_IRQ_HANDLER_PRIORITY 0x40
static void signal_cyw43_task(void);
#if !LWIP_TCPIP_CORE_LOCKING_INPUT
static SemaphoreHandle_t cyw43_mutex;
#endif
static TimerHandle_t timer_handle;
static TaskHandle_t cyw43_task_handle;
static volatile bool cyw43_task_should_exit;
static SemaphoreHandle_t cyw43_worker_ran_sem;
static uint8_t cyw43_core_num;
// Called in low priority pendsv interrupt only to do lwip processing and check cyw43 sleep
static void periodic_worker(__unused TimerHandle_t handle)
{
#if CYW43_USE_STATS
static uint32_t counter;
if (counter++ % (30000 / LWIP_SYS_CHECK_MS) == 0) {
cyw43_dump_stats();
}
#endif
CYW43_STAT_INC(LWIP_RUN_COUNT);
if (cyw43_poll) {
if (cyw43_sleep > 0) {
if (--cyw43_sleep == 0) {
signal_cyw43_task();
}
}
}
}
void cyw43_await_background_or_timeout_us(uint32_t timeout_us) {
// if we are called from within an IRQ, then don't wait (we are only ever called in a polling loop)
assert(!portCHECK_IF_IN_ISR());
xSemaphoreTake(cyw43_worker_ran_sem, pdMS_TO_TICKS(timeout_us / 1000));
}
// GPIO interrupt handler to tell us there's cyw43 has work to do
static void gpio_irq_handler(void)
{
uint32_t events = gpio_get_irq_event_mask(CYW43_PIN_WL_HOST_WAKE);
if (events & GPIO_IRQ_LEVEL_HIGH) {
// As we use a high level interrupt, it will go off forever until it's serviced
// So disable the interrupt until this is done. It's re-enabled again by CYW43_POST_POLL_HOOK
// which is called at the end of cyw43_poll_func
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, false);
signal_cyw43_task();
CYW43_STAT_INC(IRQ_COUNT);
}
}
// Low priority interrupt handler to perform background processing
static void cyw43_task(__unused void *param) {
do {
ulTaskNotifyTake(pdFALSE, portMAX_DELAY);
if (cyw43_task_should_exit) break;
cyw43_thread_enter();
if (cyw43_poll) cyw43_poll();
cyw43_thread_exit();
xSemaphoreGive(cyw43_worker_ran_sem);
__sev(); // it is possible regular code is waiting on a WFE on the other core
} while (true);
}
static void tcpip_init_done(void *param) {
xSemaphoreGive((SemaphoreHandle_t)param);
}
int cyw43_arch_init(void) {
cyw43_core_num = get_core_num();
#if configUSE_CORE_AFFINITY && configNUM_CORES > 1
TaskHandle_t task_handle = xTaskGetCurrentTaskHandle();
UBaseType_t affinity = vTaskCoreAffinityGet(task_handle);
// we must bind the main task to one core during init
vTaskCoreAffinitySet(task_handle, 1 << portGET_CORE_ID());
#endif
#if !LWIP_TCPIP_CORE_LOCKING_INPUT
cyw43_mutex = xSemaphoreCreateRecursiveMutex();
#endif
cyw43_init(&cyw43_state);
cyw43_worker_ran_sem = xSemaphoreCreateBinary();
#if CYW43_LWIP
SemaphoreHandle_t init_sem = xSemaphoreCreateBinary();
tcpip_init(tcpip_init_done, init_sem);
xSemaphoreTake(init_sem, portMAX_DELAY);
#endif
timer_handle = xTimerCreate( "cyw43_sleep_timer", // Just a text name, not used by the kernel.
pdMS_TO_TICKS(CYW43_SLEEP_CHECK_MS),
pdTRUE, // The timers will auto-reload themselves when they expire.
NULL,
periodic_worker);
if (!timer_handle) {
return PICO_ERROR_GENERIC;
}
gpio_add_raw_irq_handler_with_order_priority(IO_IRQ_BANK0, gpio_irq_handler, CYW43_GPIO_IRQ_HANDLER_PRIORITY);
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, true);
irq_set_enabled(IO_IRQ_BANK0, true);
cyw43_task_should_exit = false;
xTaskCreate(cyw43_task, "CYW43 Worker", configMINIMAL_STACK_SIZE, NULL, CYW43_TASK_PRIORITY, &cyw43_task_handle);
#if configUSE_CORE_AFFINITY && configNUM_CORES > 1
// the cyw43 task mus tbe on the same core so it can restore IRQs
vTaskCoreAffinitySet(cyw43_task_handle, 1 << portGET_CORE_ID());
#endif
#if configUSE_CORE_AFFINITY && configNUM_CORES > 1
vTaskCoreAffinitySet(task_handle, affinity);
#endif
return PICO_OK;
}
void cyw43_arch_deinit(void) {
assert(cyw43_core_num == get_core_num());
if (timer_handle) {
xTimerDelete(timer_handle, 0);
timer_handle = 0;
}
if (cyw43_task_handle) {
cyw43_task_should_exit = true;
signal_cyw43_task();
}
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, false);
gpio_remove_raw_irq_handler(IO_IRQ_BANK0, gpio_irq_handler);
}
void cyw43_post_poll_hook(void) {
assert(cyw43_core_num == get_core_num());
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, true);
}
// This is called in the gpio and low_prio_irq interrupts and on either core
static void signal_cyw43_task(void) {
if (cyw43_task_handle) {
if (portCHECK_IF_IN_ISR()) {
vTaskNotifyGiveFromISR(cyw43_task_handle, NULL);
} else {
xTaskNotifyGive(cyw43_task_handle);
}
}
}
void cyw43_schedule_internal_poll_dispatch(void (*func)(void)) {
assert(func == cyw43_poll);
signal_cyw43_task();
}
static int nesting;
// Prevent background processing in pensv and access by the other core
// These methods are called in pensv context and on either core
// They can be called recursively
void cyw43_thread_enter(void) {
// Lock the other core and stop low_prio_irq running
assert(!portCHECK_IF_IN_ISR());
#if LWIP_TCPIP_CORE_LOCKING_INPUT
// we must share their mutex otherwise we can get deadlocks with two different recursive mutexes
LOCK_TCPIP_CORE();
#else
xSemaphoreTakeRecursive(cyw43_mutex, portMAX_DELAY);
#endif
nesting++;
}
#ifndef NDEBUG
void cyw43_thread_lock_check(void) {
// Lock the other core and stop low_prio_irq running
#if LWIP_TCPIP_CORE_LOCKING_INPUT
assert(xSemaphoreGetMutexHolder(lock_tcpip_core.mut) == xTaskGetCurrentTaskHandle());
#else
assert(xSemaphoreGetMutexHolder(cyw43_mutex) == xTaskGetCurrentTaskHandle());
#endif
}
#endif
// Re-enable background processing
void cyw43_thread_exit(void) {
// Run low_prio_irq if needed
--nesting;
#if LWIP_TCPIP_CORE_LOCKING_INPUT
// we must share their mutex otherwise we can get deadlocks with two different recursive mutexes
UNLOCK_TCPIP_CORE();
#else
xSemaphoreGiveRecursive(cyw43_mutex);
#endif
if (!nesting && cyw43_task_handle != xTaskGetCurrentTaskHandle())
signal_cyw43_task();
}
void cyw43_delay_ms(uint32_t ms) {
assert(!portCHECK_IF_IN_ISR());
vTaskDelay(pdMS_TO_TICKS(ms));
}
void cyw43_delay_us(uint32_t us) {
if (us >= 1000) {
cyw43_delay_ms(us / 1000);
} else {
vTaskDelay(1);
}
}
void cyw43_arch_poll() {
}
#endif

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/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdio.h>
#include "hardware/gpio.h"
#include "hardware/irq.h"
#include "pico/sem.h"
#include "pico/cyw43_arch.h"
#include "cyw43_stats.h"
#if PICO_CYW43_ARCH_POLL
#include <lwip/init.h>
#include "lwip/timeouts.h"
#if CYW43_LWIP && !NO_SYS
#error PICO_CYW43_ARCH_POLL requires lwIP NO_SYS=1
#endif
#define CYW43_GPIO_IRQ_HANDLER_PRIORITY 0x40
#ifndef NDEBUG
uint8_t cyw43_core_num;
#endif
bool cyw43_poll_required;
// GPIO interrupt handler to tell us there's cyw43 has work to do
static void gpio_irq_handler(void)
{
uint32_t events = gpio_get_irq_event_mask(CYW43_PIN_WL_HOST_WAKE);
if (events & GPIO_IRQ_LEVEL_HIGH) {
// As we use a high level interrupt, it will go off forever until it's serviced
// So disable the interrupt until this is done. It's re-enabled again by CYW43_POST_POLL_HOOK
// which is called at the end of cyw43_poll_func
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, false);
// also clear the force bit which we use to programmatically cause this handler to fire (on the right core)
io_irq_ctrl_hw_t *irq_ctrl_base = get_core_num() ?
&iobank0_hw->proc1_irq_ctrl : &iobank0_hw->proc0_irq_ctrl;
hw_clear_bits(&irq_ctrl_base->intf[CYW43_PIN_WL_HOST_WAKE/8], GPIO_IRQ_LEVEL_HIGH << (4 * (CYW43_PIN_WL_HOST_WAKE & 7)));
cyw43_schedule_internal_poll_dispatch(cyw43_poll);
CYW43_STAT_INC(IRQ_COUNT);
}
}
void cyw43_post_poll_hook(void) {
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, true);
}
int cyw43_arch_init(void) {
#ifndef NDEBUG
cyw43_core_num = (uint8_t)get_core_num();
#endif
cyw43_init(&cyw43_state);
static bool done_lwip_init;
if (!done_lwip_init) {
lwip_init();
done_lwip_init = true;
}
gpio_add_raw_irq_handler_with_order_priority(IO_IRQ_BANK0, gpio_irq_handler, CYW43_GPIO_IRQ_HANDLER_PRIORITY);
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, true);
irq_set_enabled(IO_IRQ_BANK0, true);
return 0;
}
void cyw43_arch_deinit(void) {
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, false);
gpio_remove_raw_irq_handler(IO_IRQ_BANK0, gpio_irq_handler);
cyw43_deinit(&cyw43_state);
}
void cyw43_schedule_internal_poll_dispatch(__unused void (*func)(void)) {
cyw43_poll_required = true;
}
void cyw43_arch_poll(void)
{
CYW43_STAT_INC(LWIP_RUN_COUNT);
sys_check_timeouts();
if (cyw43_poll) {
if (cyw43_sleep > 0) {
// todo check this; but we don't want to advance too quickly
static absolute_time_t last_poll_time;
absolute_time_t current = get_absolute_time();
if (absolute_time_diff_us(last_poll_time, current) > 1000) {
if (--cyw43_sleep == 0) {
cyw43_poll_required = 1;
}
last_poll_time = current;
}
}
// todo graham i removed this because otherwise polling can do nothing during connect.
// in the polling only case, the caller is responsible for throttling how often they call anyway.
// The alternative would be to have the call to this function from the init set the poll_required flag first
// if (cyw43_poll_required) {
cyw43_poll();
// cyw43_poll_required = false;
// }
}
}
#ifndef NDEBUG
void cyw43_thread_check() {
if (__get_current_exception() || get_core_num() != cyw43_core_num) {
panic("cyw43_thread_lock_check failed");
}
}
#endif
#endif

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/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdio.h>
#include "pico/cyw43_arch.h"
#include "pico/mutex.h"
#include "pico/sem.h"
#include "hardware/gpio.h"
#include "hardware/irq.h"
#include "cyw43_stats.h"
#if CYW43_LWIP
#include <lwip/init.h>
#include "lwip/timeouts.h"
#endif
// note same code
#if PICO_CYW43_ARCH_THREADSAFE_BACKGROUND
#if PICO_CYW43_ARCH_THREADSAFE_BACKGROUND && CYW43_LWIP && !NO_SYS
#error PICO_CYW43_ARCH_THREADSAFE_BACKGROUND requires lwIP NO_SYS=1
#endif
#if PICO_CYW43_ARCH_THREADSAFE_BACKGROUND && CYW43_LWIP && MEM_LIBC_MALLOC
#error MEM_LIBC_MALLOC is incompatible with PICO_CYW43_ARCH_THREADSAFE_BACKGROUND
#endif
// todo right now we are now always doing a cyw43_dispatch along with a lwip one when hopping cores in low_prio_irq_schedule_dispatch
#ifndef CYW43_SLEEP_CHECK_MS
#define CYW43_SLEEP_CHECK_MS 50 // How often to run lwip callback
#endif
static alarm_id_t periodic_alarm = -1;
static inline uint recursive_mutex_enter_count(recursive_mutex_t *mutex) {
return mutex->enter_count;
}
static inline lock_owner_id_t recursive_mutex_owner(recursive_mutex_t *mutex) {
return mutex->owner;
}
#define CYW43_GPIO_IRQ_HANDLER_PRIORITY 0x40
enum {
CYW43_DISPATCH_SLOT_CYW43 = 0,
CYW43_DISPATCH_SLOT_ADAPTER,
CYW43_DISPATCH_SLOT_ENUM_COUNT
};
#ifndef CYW43_DISPATCH_SLOT_COUNT
#define CYW43_DISPATCH_SLOT_COUNT CYW43_DISPATCH_SLOT_ENUM_COUNT
#endif
typedef void (*low_prio_irq_dispatch_t)(void);
static void low_prio_irq_schedule_dispatch(size_t slot, low_prio_irq_dispatch_t f);
static uint8_t cyw43_core_num;
#ifndef NDEBUG
static bool in_low_priority_irq;
#endif
static uint8_t low_priority_irq_num;
static bool low_priority_irq_missed;
static low_prio_irq_dispatch_t low_priority_irq_dispatch_slots[CYW43_DISPATCH_SLOT_COUNT];
static recursive_mutex_t cyw43_mutex;
semaphore_t cyw43_irq_sem;
// Called in low priority pendsv interrupt only to do lwip processing and check cyw43 sleep
static void periodic_worker(void)
{
#if CYW43_USE_STATS
static uint32_t counter;
if (counter++ % (30000 / LWIP_SYS_CHECK_MS) == 0) {
cyw43_dump_stats();
}
#endif
CYW43_STAT_INC(LWIP_RUN_COUNT);
#if CYW43_LWIP
sys_check_timeouts();
#endif
if (cyw43_poll) {
if (cyw43_sleep > 0) {
if (--cyw43_sleep == 0) {
low_prio_irq_schedule_dispatch(CYW43_DISPATCH_SLOT_CYW43, cyw43_poll);
}
}
}
}
// Regular callback to get lwip to check for timeouts
static int64_t periodic_alarm_handler(__unused alarm_id_t id, __unused void *user_data)
{
// Do lwip processing in low priority pendsv interrupt
low_prio_irq_schedule_dispatch(CYW43_DISPATCH_SLOT_ADAPTER, periodic_worker);
return CYW43_SLEEP_CHECK_MS * 1000;
}
void cyw43_await_background_or_timeout_us(uint32_t timeout_us) {
// if we are called from within an IRQ, then don't wait (we are only ever called in a polling loop)
if (!__get_current_exception()) {
sem_acquire_timeout_us(&cyw43_irq_sem, timeout_us);
}
}
// GPIO interrupt handler to tell us there's cyw43 has work to do
static void gpio_irq_handler(void)
{
uint32_t events = gpio_get_irq_event_mask(CYW43_PIN_WL_HOST_WAKE);
if (events & GPIO_IRQ_LEVEL_HIGH) {
// As we use a high level interrupt, it will go off forever until it's serviced
// So disable the interrupt until this is done. It's re-enabled again by CYW43_POST_POLL_HOOK
// which is called at the end of cyw43_poll_func
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, false);
// also clear the force bit which we use to progratically cause this handler to fire (on the right core)
io_irq_ctrl_hw_t *irq_ctrl_base = get_core_num() ?
&iobank0_hw->proc1_irq_ctrl : &iobank0_hw->proc0_irq_ctrl;
hw_clear_bits(&irq_ctrl_base->intf[CYW43_PIN_WL_HOST_WAKE/8], GPIO_IRQ_LEVEL_HIGH << (4 * (CYW43_PIN_WL_HOST_WAKE & 7)));
low_prio_irq_schedule_dispatch(CYW43_DISPATCH_SLOT_CYW43, cyw43_poll);
CYW43_STAT_INC(IRQ_COUNT);
}
}
// Low priority interrupt handler to perform background processing
static void low_priority_irq_handler(void) {
assert(cyw43_core_num == get_core_num());
if (recursive_mutex_try_enter(&cyw43_mutex, NULL)) {
if (recursive_mutex_enter_count(&cyw43_mutex) != 1) {
low_priority_irq_missed = true;
CYW43_STAT_INC(PENDSV_DISABLED_COUNT);
} else {
CYW43_STAT_INC(PENDSV_RUN_COUNT);
#ifndef NDEBUG
in_low_priority_irq = true;
#endif
for (size_t i = 0; i < count_of(low_priority_irq_dispatch_slots); i++) {
if (low_priority_irq_dispatch_slots[i] != NULL) {
low_prio_irq_dispatch_t f = low_priority_irq_dispatch_slots[i];
low_priority_irq_dispatch_slots[i] = NULL;
f();
}
}
#ifndef NDEBUG
in_low_priority_irq = false;
#endif
}
recursive_mutex_exit(&cyw43_mutex);
} else {
CYW43_STAT_INC(PENDSV_DISABLED_COUNT);
low_priority_irq_missed = true;
}
sem_release(&cyw43_irq_sem);
}
static bool low_prio_irq_init(uint8_t priority) {
assert(get_core_num() == cyw43_core_num);
int irq = user_irq_claim_unused(false);
if (irq < 0) return false;
low_priority_irq_num = (uint8_t) irq;
irq_set_exclusive_handler(low_priority_irq_num, low_priority_irq_handler);
irq_set_enabled(low_priority_irq_num, true);
irq_set_priority(low_priority_irq_num, priority);
return true;
}
static void low_prio_irq_deinit(void) {
if (low_priority_irq_num > 0) {
irq_set_enabled(low_priority_irq_num, false);
irq_remove_handler(low_priority_irq_num, low_priority_irq_handler);
user_irq_unclaim(low_priority_irq_num);
low_priority_irq_num = 0;
}
}
int cyw43_arch_init(void) {
cyw43_core_num = get_core_num();
recursive_mutex_init(&cyw43_mutex);
cyw43_init(&cyw43_state);
sem_init(&cyw43_irq_sem, 0, 1);
// Start regular lwip callback to handle timeouts
periodic_alarm = add_alarm_in_us(CYW43_SLEEP_CHECK_MS * 1000, periodic_alarm_handler, NULL, true);
if (periodic_alarm < 0) {
return PICO_ERROR_GENERIC;
}
gpio_add_raw_irq_handler_with_order_priority(IO_IRQ_BANK0, gpio_irq_handler, CYW43_GPIO_IRQ_HANDLER_PRIORITY);
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, true);
irq_set_enabled(IO_IRQ_BANK0, true);
#if CYW43_LWIP
lwip_init();
#endif
// start low priority handler (no background work is done before this)
bool ok = low_prio_irq_init(PICO_LOWEST_IRQ_PRIORITY);
if (!ok) {
cyw43_arch_deinit();
return PICO_ERROR_GENERIC;
}
return PICO_OK;
}
void cyw43_arch_deinit(void) {
if (periodic_alarm >= 0) {
cancel_alarm(periodic_alarm);
periodic_alarm = -1;
}
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, false);
gpio_remove_raw_irq_handler(IO_IRQ_BANK0, gpio_irq_handler);
low_prio_irq_deinit();
}
void cyw43_post_poll_hook(void) {
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, GPIO_IRQ_LEVEL_HIGH, true);
}
// This is called in the gpio and low_prio_irq interrupts and on either core
static void low_prio_irq_schedule_dispatch(size_t slot, low_prio_irq_dispatch_t f) {
assert(slot < count_of(low_priority_irq_dispatch_slots));
low_priority_irq_dispatch_slots[slot] = f;
if (cyw43_core_num == get_core_num()) {
//on same core, can dispatch directly
irq_set_pending(low_priority_irq_num);
} else {
// on wrong core, so force via GPIO IRQ which itself calls this method for the CYW43 slot.
// since the CYW43 slot always uses the same function, this is fine with the addition of an
// extra (but harmless) CYW43 slot call when another SLOT is invoked.
// We could do better, but would have to track why the IRQ was called.
io_irq_ctrl_hw_t *irq_ctrl_base = cyw43_core_num ?
&iobank0_hw->proc1_irq_ctrl : &iobank0_hw->proc0_irq_ctrl;
hw_set_bits(&irq_ctrl_base->intf[CYW43_PIN_WL_HOST_WAKE/8], GPIO_IRQ_LEVEL_HIGH << (4 * (CYW43_PIN_WL_HOST_WAKE & 7)));
}
}
void cyw43_schedule_internal_poll_dispatch(void (*func)(void)) {
low_prio_irq_schedule_dispatch(CYW43_DISPATCH_SLOT_CYW43, func);
}
// Prevent background processing in pensv and access by the other core
// These methods are called in pensv context and on either core
// They can be called recursively
void cyw43_thread_enter(void) {
// Lock the other core and stop low_prio_irq running
recursive_mutex_enter_blocking(&cyw43_mutex);
}
#ifndef NDEBUG
void cyw43_thread_lock_check(void) {
// Lock the other core and stop low_prio_irq running
if (recursive_mutex_enter_count(&cyw43_mutex) < 1 || recursive_mutex_owner(&cyw43_mutex) != lock_get_caller_owner_id()) {
panic("cyw43_thread_lock_check failed");
}
}
#endif
// Re-enable background processing
void cyw43_thread_exit(void) {
// Run low_prio_irq if needed
if (1 == recursive_mutex_enter_count(&cyw43_mutex)) {
// note the outer release of the mutex is not via cyw43_exit in the low_priority_irq case (it is a direct mutex exit)
assert(!in_low_priority_irq);
// if (low_priority_irq_missed) {
// low_priority_irq_missed = false;
if (low_priority_irq_dispatch_slots[CYW43_DISPATCH_SLOT_CYW43]) {
low_prio_irq_schedule_dispatch(CYW43_DISPATCH_SLOT_CYW43, cyw43_poll);
}
// }
}
recursive_mutex_exit(&cyw43_mutex);
}
static void cyw43_delay_until(absolute_time_t until) {
// sleep can be called in IRQs, so there's not much we can do there
if (__get_current_exception()) {
busy_wait_until(until);
} else {
sleep_until(until);
}
}
void cyw43_delay_ms(uint32_t ms) {
cyw43_delay_until(make_timeout_time_ms(ms));
}
void cyw43_delay_us(uint32_t us) {
cyw43_delay_until(make_timeout_time_us(us));
}
void cyw43_arch_poll() {
// should not be necessary
// if (cyw43_poll) {
// low_prio_irq_schedule_dispatch(CYW43_DISPATCH_SLOT_CYW43, cyw43_poll);
// }
}
#if !CYW43_LWIP
static void no_lwip_fail() {
panic("You cannot use IP with pico_cyw43_arch_none");
}
void cyw43_cb_tcpip_init(cyw43_t *self, int itf) {
}
void cyw43_cb_tcpip_deinit(cyw43_t *self, int itf) {
}
void cyw43_cb_tcpip_set_link_up(cyw43_t *self, int itf) {
no_lwip_fail();
}
void cyw43_cb_tcpip_set_link_down(cyw43_t *self, int itf) {
no_lwip_fail();
}
void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t *buf) {
no_lwip_fail();
}
#endif
#endif

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/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
// This header is included by cyw43_driver to setup its environment
#ifndef _CYW43_CONFIGPORT_H
#define _CYW43_CONFIGPORT_H
#include "pico.h"
#ifdef PICO_CYW43_ARCH_HEADER
#include __XSTRING(PICO_CYW43_ARCH_HEADER)
#else
#if PICO_CYW43_ARCH_POLL
#include "pico/cyw43_arch/arch_poll.h"
#elif PICO_CYW43_ARCH_THREADSAFE_BACKGROUND
#include "pico/cyw43_arch/arch_threadsafe_background.h"
#elif PICO_CYW43_ARCH_FREERTOS
#include "pico/cyw43_arch/arch_freertos.h"
#else
#error must specify support pico_cyw43_arch architecture type or set PICO_CYW43_ARCH_HEADER
#endif
#endif
#ifndef CYW43_HOST_NAME
#define CYW43_HOST_NAME "PicoW"
#endif
#ifndef CYW43_GPIO
#define CYW43_GPIO 1
#endif
#ifndef CYW43_LOGIC_DEBUG
#define CYW43_LOGIC_DEBUG 0
#endif
#ifndef CYW43_USE_OTP_MAC
#define CYW43_USE_OTP_MAC 1
#endif
#ifndef CYW43_NO_NETUTILS
#define CYW43_NO_NETUTILS 1
#endif
#ifndef CYW43_IOCTL_TIMEOUT_US
#define CYW43_IOCTL_TIMEOUT_US 1000000
#endif
#ifndef CYW43_USE_STATS
#define CYW43_USE_STATS 0
#endif
// todo should this be user settable?
#ifndef CYW43_HAL_MAC_WLAN0
#define CYW43_HAL_MAC_WLAN0 0
#endif
#ifndef STATIC
#define STATIC static
#endif
#ifndef CYW43_USE_SPI
#define CYW43_USE_SPI 1
#endif
#ifndef CYW43_SPI_PIO
#define CYW43_SPI_PIO 1
#endif
#endif

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/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _PICO_CYW43_ARCH_H
#define _PICO_CYW43_ARCH_H
#include "pico.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "cyw43.h"
#include "cyw43_country.h"
/**
* \defgroup cyw43_driver cyw43_driver
* \ingroup pico_cyw43_arch
* \brief Driver used for Pico W wireless
*/
/**
* \defgroup cyw43_ll cyw43_ll
* \ingroup cyw43_driver
* \brief Low Level CYW43 driver interface
*/
/** \file pico/cyw43_arch.h
* \defgroup pico_cyw43_arch pico_cyw43_arch
*
* Architecture for integrating the CYW43 driver (for the wireless on Pico W) and lwIP (for TCP/IP stack) into the SDK. It is also necessary for accessing the on-board LED on Pico W
*
* Both the low level \c cyw43_driver and the lwIP stack require periodic servicing, and have limitations
* on whether they can be called from multiple cores/threads.
*
* \c pico_cyw43_arch attempts to abstract these complications into several behavioral groups:
*
* * \em 'poll' - This not multi-core/IRQ safe, and requires the user to call \ref cyw43_arch_poll periodically from their main loop
* * \em 'thread_safe_background' - This is multi-core/thread/task safe, and maintenance of the driver and TCP/IP stack is handled automatically in the background
*
* As of right now, lwIP is the only supported TCP/IP stack, however the use of \c pico_cyw43_arch is intended to be independent of
* the particular TCP/IP stack used (and possibly Bluetooth stack used) in the future. For this reason, the integration of lwIP
* is handled in the base (\c pico_cyw43_arch) library based on the #define \ref CYW43_LWIP used by the \c cyw43_driver.
*
* Whilst you can use the \c pico_cyw43_arch library directly and specify \ref CYW$#_LWIP (and other defines) yourself, several
* other libraries are made available to the build which aggregate the defines and other dependencies for you:
*
* * \b pico_cyw43_arch_lwip_poll - For using the RAW lwIP API (in `NO_SYS=1` mode) without any background processing or multi-core/thread safety.
*
* The user must call \ref pico_cyw43_poll periodically from their main loop.
*
* This wrapper library:
* - Sets \c CYW43_LWIP=1 to enable lwIP support in \c pico_cyw43_arch and \c cyw43_driver.
* - Sets \c PICO_CYW43_ARCH_POLL=1 to select the polling behavior.
* - Adds the \c pico_lwip as a dependency to pull in lwIP.
*
* * \b pico_cyw43_arch_lwip_threadsafe_background - For using the RAW lwIP API (in `NO_SYS=1` mode) with multi-core/thread safety, and automatic servicing of the \c cyw43_driver and
* lwIP in background.
*
* Calls into the \c cyw43_driver high level API (cyw43.h) may be made from either core or from lwIP callbacks, however calls into lwIP (which
* is not thread-safe) other than those made from lwIP callbacks, must be bracketed with \ref cyw43_arch_lwip_begin and \ref cyw43_arch_lwip_end. It is fine to bracket
* calls made from within lwIP callbacks too; you just don't have to.
*
* \note lwIP callbacks happen in a (low priority) IRQ context (similar to an alarm callback), so care should be taken when interacting
* with other code.
*
* This wrapper library:
* - Sets \c CYW43_LWIP=1 to enable lwIP support in \c pico_cyw43_arch and \c cyw43_driver
* - Sets \c PICO_CYW43_ARCH_THREADSAFE_BACKGROUND=1 to select the thread-safe/non-polling behavior.
* - Adds the pico_lwip as a dependency to pull in lwIP.
*
*
* This library \em can also be used under the RP2040 port of FreeRTOS with lwIP in `NO_SYS=1` mode (allowing you to call \c cyw43_driver APIs
* from any task, and to call lwIP from lwIP callbacks, or from any task if you bracket the calls with \ref cyw43_arch_lwip_begin and \ref cyw43_arch_lwip_end. Again, you should be
* careful about what you do in lwIP callbacks, as you cannot call most FreeRTOS APIs from within an IRQ context. Unless you have good reason, you should probably
* use the full FreeRTOS integration (with `NO_SYS=0`) provided by \c pico_cyw43_arch_lwip_sys_freertos.
*
* * \b pico_cyw43_arch_lwip_sys_freertos - For using the full lwIP API including blocking sockets in OS (`NO_SYS=0`) mode, along with with multi-core/task/thread safety, and automatic servicing of the \c cyw43_driver and
* the lwIP stack.
*
* This wrapper library:
* - Sets \c CYW43_LWIP=1 to enable lwIP support in \c pico_cyw43_arch and \c cyw43_driver.
* - Sets \c PICO_CYW43_ARCH_FREERTOS=1 to select the NO_SYS=0 lwip/FreeRTOS integration
* - Sets \c LWIP_PROVIDE_ERRNO=1 to provide error numbers needed for compilation without an OS
* - Adds the \c pico_lwip as a dependency to pull in lwIP.
* - Adds the lwIP/FreeRTOS code from lwip-contrib (in the contrib directory of lwIP)
*
* Calls into the \c cyw43_driver high level API (cyw43.h) may be made from any task or from lwIP callbacks, but not from IRQs. Calls into the lwIP RAW API (which is not thread safe)
* must be bracketed with \ref cyw43_arch_lwip_begin and \ref cyw43_arch_lwip_end. It is fine to bracket calls made from within lwIP callbacks too; you just don't have to.
*
* \note this wrapper library requires you to link FreeRTOS functionality with your application yourself.
*
* * \b pico_cyw43_arch_none - If you do not need the TCP/IP stack but wish to use the on-board LED.
*
* This wrapper library:
* - Sets \c CYW43_LWIP=0 to disable lwIP support in \c pico_cyw43_arch and \c cyw43_driver
*/
// PICO_CONFIG: PARAM_ASSERTIONS_ENABLED_CYW43_ARCH, Enable/disable assertions in the pico_cyw43_arch module, type=bool, default=0, group=pico_cyw43_arch
#ifndef PARAM_ASSERTIONS_ENABLED_CYW43_ARCH
#define PARAM_ASSERTIONS_ENABLED_CYW43_ARCH 0
#endif
// PICO_CONFIG: CYW43_ARCH_DEBUG_ENABLED, Enable/disable some debugging output in the pico_cyw43_arch module, type=bool, default=1 in debug builds, group=pico_cyw43_arch
#ifndef CYW43_ARCH_DEBUG_ENABLED
#ifndef NDEBUG
#define CYW43_ARCH_DEBUG_ENABLED 1
#else
#define CYW43_ARCH_DEBUG_ENABLED 0
#endif
#endif
// PICO_CONFIG: PICO_CYW43_ARCH_DEFAULT_COUNTRY_CODE, Default country code for the cyw43 wireless driver, default=CYW43_COUNTRY_WORLDWIDE, group=pico_cyw43_arch
#ifndef PICO_CYW43_ARCH_DEFAULT_COUNTRY_CODE
#define PICO_CYW43_ARCH_DEFAULT_COUNTRY_CODE CYW43_COUNTRY_WORLDWIDE
#endif
/*!
* \brief Initialize the CYW43 architecture
* \ingroup pico_cyw43_arch
*
* This method initializes the `cyw43_driver` code and initializes the lwIP stack (if it
* was enabled at build time). This method must be called prior to using any other \c pico_cyw43_arch,
* \cyw43_driver or lwIP functions.
*
* \note this method initializes wireless with a country code of \c PICO_CYW43_ARCH_DEFAULT_COUNTRY_CODE
* which defaults to \c CYW43_COUNTRY_WORLDWIDE. Worldwide settings may not give the best performance; consider
* setting PICO_CYW43_ARCH_DEFAULT_COUNTRY_CODE to a different value or calling \ref cyw43_arch_init_with_country
* \return 0 if the initialization is successful, an error code otherwise \see pico_error_codes
*/
int cyw43_arch_init(void);
/*!
* \brief Initialize the CYW43 architecture for use in a specific country
* \ingroup pico_cyw43_arch
*
* This method initializes the `cyw43_driver` code and initializes the lwIP stack (if it
* was enabled at build time). This method must be called prior to using any other \c pico_cyw43_arch,
* \cyw43_driver or lwIP functions.
*
* \param country the country code to use (see \ref CYW43_COUNTRY_)
* \return 0 if the initialization is successful, an error code otherwise \see pico_error_codes
*/
int cyw43_arch_init_with_country(uint32_t country);
/*!
* \brief Enables Wi-Fi STA (Station) mode.
* \ingroup pico_cyw43_arch
*
* This enables the Wi-Fi in \emStation mode such that connections can be made to other Wi-Fi Access Points
*/
void cyw43_arch_enable_sta_mode(void);
/*!
* \brief Enables Wi-Fi AP (Access point) mode.
* \ingroup pico_cyw43_arch
*
* This enables the Wi-Fi in \em Access \em Point mode such that connections can be made to the device by other Wi-Fi clients
* \param ssid the name for the access point
* \param password the password to use or NULL for no password.
* \param auth the authorization type to use when the password is enabled. Values are \ref CYW43_AUTH_WPA_TKIP_PSK,
* \ref CYW43_AUTH_WPA2_AES_PSK, or \ref CYW43_AUTH_WPA2_MIXED_PSK (see \ref CYW43_AUTH_)
*/
void cyw43_arch_enable_ap_mode(const char *ssid, const char *password, uint32_t auth);
/*!
* \brief De-initialize the CYW43 architecture
* \ingroup pico_cyw43_arch
*
* This method de-initializes the `cyw43_driver` code and de-initializes the lwIP stack (if it
* was enabled at build time). Note this method should always be called from the same core (or RTOS
* task, depending on the environment) as \ref cyw43_arch_init.
*/
void cyw43_arch_deinit(void);
/*!
* \brief Attempt to connect to a wireless access point, blocking until the network is joined or a failure is detected.
* \ingroup pico_cyw43_arch
*
* \param ssid the network name to connect to
* \param password the network password or NULL if there is no password required
* \param auth the authorization type to use when the password is enabled. Values are \ref CYW43_AUTH_WPA_TKIP_PSK,
* \ref CYW43_AUTH_WPA2_AES_PSK, or \ref CYW43_AUTH_WPA2_MIXED_PSK (see \ref CYW43_AUTH_)
*
* \return 0 if the initialization is successful, an error code otherwise \see pico_error_codes
*/
int cyw43_arch_wifi_connect_blocking(const char *ssid, const char *pw, uint32_t auth);
/*!
* \brief Attempt to connect to a wireless access point, blocking until the network is joined, a failure is detected or a timeout occurs
* \ingroup pico_cyw43_arch
*
* \param ssid the network name to connect to
* \param password the network password or NULL if there is no password required
* \param auth the authorization type to use when the password is enabled. Values are \ref CYW43_AUTH_WPA_TKIP_PSK,
* \ref CYW43_AUTH_WPA2_AES_PSK, or \ref CYW43_AUTH_WPA2_MIXED_PSK (see \ref CYW43_AUTH_)
*
* \return 0 if the initialization is successful, an error code otherwise \see pico_error_codes
*/
int cyw43_arch_wifi_connect_timeout_ms(const char *ssid, const char *pw, uint32_t auth, uint32_t timeout);
/*!
* \brief Start attempting to connect to a wireless access point
* \ingroup pico_cyw43_arch
*
* This method tells the CYW43 driver to start connecting to an access point. You should subsequently check the
* status by calling \ref cyw43_wifi_link_status.
*
* \param ssid the network name to connect to
* \param password the network password or NULL if there is no password required
* \param auth the authorization type to use when the password is enabled. Values are \ref CYW43_AUTH_WPA_TKIP_PSK,
* \ref CYW43_AUTH_WPA2_AES_PSK, or \ref CYW43_AUTH_WPA2_MIXED_PSK (see \ref CYW43_AUTH_)
*
* \return 0 if the scan was started successfully, an error code otherwise \see pico_error_codes
*/
int cyw43_arch_wifi_connect_async(const char *ssid, const char *pw, uint32_t auth);
/*!
* \brief Return the country code used to initialize cyw43_arch
* \ingroup pico_cyw43_arch
*
* \return the country code (see \ref CYW43_COUNTRY_)
*/
uint32_t cyw43_arch_get_country_code(void);
/*!
* \brief Set a GPIO pin on the wireless chip to a given value
* \ingroup pico_cyw43_arch
* \note this method does not check for errors setting the GPIO. You can use the lower level \ref cyw43_gpio_set instead if you wish
* to check for errors.
*
* \param wl_gpio the GPIO number on the wireless chip
* \param value true to set the GPIO, false to clear it.
*/
void cyw43_arch_gpio_put(uint wl_gpio, bool value);
/*!
* \brief Read the value of a GPIO pin on the wireless chip
* \ingroup pico_cyw43_arch
* \note this method does not check for errors setting the GPIO. You can use the lower level \ref cyw43_gpio_get instead if you wish
* to check for errors.
*
* \param wl_gpio the GPIO number on the wireless chip
* \return true if the GPIO is high, false otherwise
*/
bool cyw43_arch_gpio_get(uint wl_gpio);
/*!
* \brief Perform any processing required by the \c cyw43_driver or the TCP/IP stack
* \ingroup pico_cyw43_arch
*
* This method must be called periodically from the main loop when using a
* \em polling style \c pico_cyw43_arch (e.g. \c pico_cyw43_arch_lwip_poll ). It
* may be called in other styles, but it is unnecessary to do so.
*/
void cyw43_arch_poll(void);
/*!
* \fn cyw43_arch_lwip_begin
* \brief Acquire any locks required to call into lwIP
* \ingroup pico_cyw43_arch
*
* The lwIP API is not thread safe. You should surround calls into the lwIP API
* with calls to this method and \ref cyw43_arch_lwip_end. Note these calls are not
* necessary (but harmless) when you are calling back into the lwIP API from an lwIP callback.
* If you are using single-core polling only (pico_cyw43_arch_poll) then these calls are no-ops
* anyway it is good practice to call them anyway where they are necessary.
*
* \sa cyw43_arch_lwip_end
* \sa cyw43_arch_lwip_protect
*/
/*!
* \fn void cyw43_arch_lwip_end(void)
* \brief Release any locks required for calling into lwIP
* \ingroup pico_cyw43_arch
*
* The lwIP API is not thread safe. You should surround calls into the lwIP API
* with calls to \ref cyw43_arch_lwip_begin and this method. Note these calls are not
* necessary (but harmless) when you are calling back into the lwIP API from an lwIP callback.
* If you are using single-core polling only (pico_cyw43_arch_poll) then these calls are no-ops
* anyway it is good practice to call them anyway where they are necessary.
*
* \sa cyw43_arch_lwip_begin
* \sa cyw43_arch_lwip_protect
*/
/*!
* \fn int cyw43_arch_lwip_protect(int (*func)(void *param), void *param)
* \brief sad Release any locks required for calling into lwIP
* \ingroup pico_cyw43_arch
*
* The lwIP API is not thread safe. You can use this method to wrap a function
* with any locking required to call into the lwIP API. If you are using
* single-core polling only (pico_cyw43_arch_poll) then there are no
* locks to required, but it is still good practice to use this function.
*
* \param func the function ta call with any required locks held
* \param param parameter to pass to \c func
* \return the return value from \c func
* \sa cyw43_arch_lwip_begin
* \sa cyw43_arch_lwip_end
*/
/*!
* \fn void cyw43_arch_lwip_check(void)
* \brief Checks the caller has any locks required for calling into lwIP
* \ingroup pico_cyw43_arch
*
* The lwIP API is not thread safe. You should surround calls into the lwIP API
* with calls to \ref cyw43_arch_lwip_begin and this method. Note these calls are not
* necessary (but harmless) when you are calling back into the lwIP API from an lwIP callback.
*
* This method will assert in debug mode, if the above conditions are not met (i.e. it is not safe to
* call into the lwIP API)
*
* \sa cyw43_arch_lwip_begin
* \sa cyw43_arch_lwip_protect
*/
#ifdef __cplusplus
}
#endif
#endif

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/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _PICO_CYW43_ARCH_ARCH_COMMON_H
#define _PICO_CYW43_ARCH_ARCH_COMMON_H
#include "pico.h"
#include "pico/time.h"
#include "hardware/gpio.h"
#include "pico/error.h"
#ifdef __cplusplus
extern "C" {
#endif
// Note, these are negated, because cyw43_driver negates them before returning!
#define CYW43_EPERM (-PICO_ERROR_NOT_PERMITTED) // Operation not permitted
#define CYW43_EIO (-PICO_ERROR_IO) // I/O error
#define CYW43_EINVAL (-PICO_ERROR_INVALID_ARG) // Invalid argument
#define CYW43_ETIMEDOUT (-PICO_ERROR_TIMEOUT) // Connection timed out
#define CYW43_NUM_GPIOS CYW43_WL_GPIO_COUNT
#define cyw43_hal_pin_obj_t uint
// get the number of elements in a fixed-size array
#define CYW43_ARRAY_SIZE(a) count_of(a)
static inline uint32_t cyw43_hal_ticks_us(void) {
return time_us_32();
}
static inline uint32_t cyw43_hal_ticks_ms(void) {
return to_ms_since_boot(get_absolute_time());
}
static inline int cyw43_hal_pin_read(cyw43_hal_pin_obj_t pin) {
return gpio_get(pin);
}
static inline void cyw43_hal_pin_low(cyw43_hal_pin_obj_t pin) {
gpio_clr_mask(1 << pin);
}
static inline void cyw43_hal_pin_high(cyw43_hal_pin_obj_t pin) {
gpio_set_mask(1 << pin);
}
#define CYW43_HAL_PIN_MODE_INPUT (GPIO_IN)
#define CYW43_HAL_PIN_MODE_OUTPUT (GPIO_OUT)
#define CYW43_HAL_PIN_PULL_NONE (0)
#define CYW43_HAL_PIN_PULL_UP (1)
#define CYW43_HAL_PIN_PULL_DOWN (2)
static inline void cyw43_hal_pin_config(cyw43_hal_pin_obj_t pin, uint32_t mode, uint32_t pull, __unused uint32_t alt) {
assert((mode == CYW43_HAL_PIN_MODE_INPUT || mode == CYW43_HAL_PIN_MODE_OUTPUT) && alt == 0);
gpio_set_dir(pin, mode);
gpio_set_pulls(pin, pull == CYW43_HAL_PIN_PULL_UP, pull == CYW43_HAL_PIN_PULL_DOWN);
}
void cyw43_hal_get_mac(int idx, uint8_t buf[6]);
void cyw43_hal_generate_laa_mac(int idx, uint8_t buf[6]);
#ifdef __cplusplus
}
#endif
#endif

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/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _EXAMPLE_CYW43_ARCH_ARCH_FREERTOS_SYS_H
#define _EXAMPLE_CYW43_ARCH_ARCH_FREERTOS_SYS_H
#include "pico/cyw43_arch/arch_common.h"
#ifdef __cplusplus
extern "C" {
#endif
void cyw43_thread_enter(void);
void cyw43_thread_exit(void);
#define CYW43_THREAD_ENTER cyw43_thread_enter();
#define CYW43_THREAD_EXIT cyw43_thread_exit();
#ifndef NDEBUG
void cyw43_thread_lock_check(void);
#define cyw43_arch_lwip_check() cyw43_thread_lock_check()
#define CYW43_THREAD_LOCK_CHECK cyw43_arch_lwip_check();
#else
#define cyw43_arch_lwip_check() ((void)0)
#define CYW43_THREAD_LOCK_CHECK
#endif
void cyw43_await_background_or_timeout_us(uint32_t timeout_us);
// todo not 100% sure about the timeouts here; MP uses __WFI which will always wakeup periodically
#define CYW43_SDPCM_SEND_COMMON_WAIT cyw43_await_background_or_timeout_us(1000);
#define CYW43_DO_IOCTL_WAIT cyw43_await_background_or_timeout_us(1000);
void cyw43_delay_ms(uint32_t ms);
void cyw43_delay_us(uint32_t us);
void cyw43_schedule_internal_poll_dispatch(void (*func)(void));
void cyw43_post_poll_hook(void);
#define CYW43_POST_POLL_HOOK cyw43_post_poll_hook();
static inline void cyw43_arch_lwip_begin(void) {
cyw43_thread_enter();
}
static inline void cyw43_arch_lwip_end(void) {
cyw43_thread_exit();
}
static inline int cyw43_arch_lwip_protect(int (*func)(void *param), void *param) {
cyw43_arch_lwip_begin();
int rc = func(param);
cyw43_arch_lwip_end();
return rc;
}
#ifdef __cplusplus
}
#endif
#endif

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/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _PICO_CYW43_ARCH_ARCH_POLL_H
#define _PICO_CYW43_ARCH_ARCH_POLL_H
#include "pico/cyw43_arch/arch_common.h"
#include <assert.h>
#ifdef __cplusplus
extern "C" {
#endif
#define CYW43_THREAD_ENTER
#define CYW43_THREAD_EXIT
#ifndef NDEBUG
void cyw43_thread_check(void);
#define cyw43_arch_lwip_check() cyw43_thread_check()
#define CYW43_THREAD_LOCK_CHECK cyw43_arch_lwip_check();
#else
#define cyw43_arch_lwip_check() ((void)0)
#define CYW43_THREAD_LOCK_CHECK
#endif
#define CYW43_SDPCM_SEND_COMMON_WAIT cyw43_poll_required = true;
#define CYW43_DO_IOCTL_WAIT cyw43_poll_required = true;
#define cyw43_delay_ms sleep_ms
#define cyw43_delay_us sleep_us
void cyw43_schedule_internal_poll_dispatch(void (*func)(void));
void cyw43_post_poll_hook(void);
extern bool cyw43_poll_required;
#define CYW43_POST_POLL_HOOK cyw43_post_poll_hook();
#endif
#ifndef DOXYGEN_GENERATION // multiple definitions in separate headers seems to confused doxygen
#define cyw43_arch_lwip_begin() ((void)0)
#define cyw43_arch_lwip_end() ((void)0)
static inline int cyw43_arch_lwip_protect(int (*func)(void *param), void *param) {
return func(param);
}
#ifdef __cplusplus
}
#endif
#endif

67
src/rp2_common/pico_cyw43_arch/include/pico/cyw43_arch/arch_threadsafe_background.h Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _PICO_CYW43_ARCH_ARCH_THREADSAFE_BACKGROUND_H
#define _PICO_CYW43_ARCH_ARCH_THREADSAFE_BACKGROUND_H
#include "pico/cyw43_arch/arch_common.h"
#ifdef __cplusplus
extern "C" {
#endif
void cyw43_thread_enter(void);
void cyw43_thread_exit(void);
#define CYW43_THREAD_ENTER cyw43_thread_enter();
#define CYW43_THREAD_EXIT cyw43_thread_exit();
#ifndef NDEBUG
void cyw43_thread_lock_check(void);
#define cyw43_arch_lwip_check() cyw43_thread_lock_check()
#define CYW43_THREAD_LOCK_CHECK cyw43_arch_lwip_check();
#else
#define cyw43_arch_lwip_check() ((void)0)
#define CYW43_THREAD_LOCK_CHECK
#endif
void cyw43_await_background_or_timeout_us(uint32_t timeout_us);
// todo not 100% sure about the timeouts here; MP uses __WFI which will always wakeup periodically
#define CYW43_SDPCM_SEND_COMMON_WAIT cyw43_await_background_or_timeout_us(1000);
#define CYW43_DO_IOCTL_WAIT cyw43_await_background_or_timeout_us(1000);
void cyw43_delay_ms(uint32_t ms);
void cyw43_delay_us(uint32_t us);
void cyw43_schedule_internal_poll_dispatch(void (*func)(void));
void cyw43_post_poll_hook(void);
#define CYW43_POST_POLL_HOOK cyw43_post_poll_hook();
static inline void cyw43_arch_lwip_begin(void) {
cyw43_thread_enter();
}
static inline void cyw43_arch_lwip_end(void) {
cyw43_thread_exit();
}
static inline int cyw43_arch_lwip_protect(int (*func)(void *param), void *param) {
cyw43_arch_lwip_begin();
int rc = func(param);
cyw43_arch_lwip_end();
return rc;
}
#ifdef __cplusplus
}
#endif
#endif

9
src/rp2_common/pico_fix/rp2040_usb_device_enumeration/rp2040_usb_device_enumeration.c
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@ -17,12 +17,12 @@
#define LS_K 0b10 #define LS_K 0b10
#define LS_SE1 0b11 #define LS_SE1 0b11
#if PICO_RP2040_B0_SUPPORTED || PICO_RP2040_B1_SUPPORTED
static void hw_enumeration_fix_wait_se0(void); static void hw_enumeration_fix_wait_se0(void);
static void hw_enumeration_fix_force_ls_j(void); static void hw_enumeration_fix_force_ls_j(void);
static void hw_enumeration_fix_finish(void); static void hw_enumeration_fix_finish(void);
void rp2040_usb_device_enumeration_fix(void) { void rp2040_usb_device_enumeration_fix(void) {
#if PICO_RP2040_B0_SUPPORTED || PICO_RP2040_B1_SUPPORTED
// Actually check for B0/B1 h/w // Actually check for B0/B1 h/w
if (rp2040_chip_version() == 1) { if (rp2040_chip_version() == 1) {
// After coming out of reset, the hardware expects 800us of LS_J (linestate J) time // After coming out of reset, the hardware expects 800us of LS_J (linestate J) time
@ -36,7 +36,6 @@ void rp2040_usb_device_enumeration_fix(void) {
// Wait SE0 phase will call force ls_j phase which will call finish phase // Wait SE0 phase will call force ls_j phase which will call finish phase
hw_enumeration_fix_wait_se0(); hw_enumeration_fix_wait_se0();
} }
#endif
} }
static inline uint8_t hw_line_state(void) { static inline uint8_t hw_line_state(void) {
@ -146,3 +145,9 @@ static void hw_enumeration_fix_finish(void) {
// Restore the pad ctrl value // Restore the pad ctrl value
padsbank0_hw->io[dp] = pad_ctrl_prev; padsbank0_hw->io[dp] = pad_ctrl_prev;
} }
#else
void rp2040_usb_device_enumeration_fix(void) {
// nothing to do
}
#endif

278
src/rp2_common/pico_lwip/CMakeLists.txt Normal file
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@ -0,0 +1,278 @@
if (DEFINED ENV{PICO_LWIP_PATH} AND (NOT PICO_LWIP_PATH))
set(PICO_LWIP_PATH $ENV{PICO_LWIP_PATH})
message("Using PICO_LWIP_PATH from environment ('${PICO_LWIP_PATH}')")
endif ()
set(LWIP_TEST_PATH "src/Filelists.cmake")
if (NOT PICO_LWIP_PATH)
set(PICO_LWIP_PATH ${PROJECT_SOURCE_DIR}/lib/lwip)
# if (NOT EXISTS ${PICO_LWIP_PATH}/${LWIP_TEST_PATH})
# message(WARNING "LWIP submodule has not been initialized; Pico W wireless support will be unavailable
#hint: try 'git submodule update --init' from your SDK directory (${PICO_SDK_PATH}).")
# endif()
elseif (NOT EXISTS ${PICO_LWIP_PATH}/${LWIP_TEST_PATH})
message(WARNING "PICO_LWIP_PATH specified but content not present.")
endif()
if (EXISTS ${PICO_LWIP_PATH}/${LWIP_TEST_PATH})
message("lwIP available at ${PICO_LWIP_PATH}")
# argh... wanted to use this, but they dump stuff into the source tree, which breaks parallel builds
#set(LWIP_DIR ${PICO_LWIP_PATH})
#include(${PICO_LWIP_PATH}/src/Filelists.cmake)
pico_register_common_scope_var(PICO_LWIP_PATH)
# The minimum set of files needed for lwIP.
add_library(pico_lwip_core INTERFACE)
target_sources(pico_lwip_core INTERFACE
${PICO_LWIP_PATH}/src/core/init.c
${PICO_LWIP_PATH}/src/core/def.c
${PICO_LWIP_PATH}/src/core/dns.c
${PICO_LWIP_PATH}/src/core/inet_chksum.c
${PICO_LWIP_PATH}/src/core/ip.c
${PICO_LWIP_PATH}/src/core/mem.c
${PICO_LWIP_PATH}/src/core/memp.c
${PICO_LWIP_PATH}/src/core/netif.c
${PICO_LWIP_PATH}/src/core/pbuf.c
${PICO_LWIP_PATH}/src/core/raw.c
${PICO_LWIP_PATH}/src/core/stats.c
${PICO_LWIP_PATH}/src/core/sys.c
${PICO_LWIP_PATH}/src/core/altcp.c
${PICO_LWIP_PATH}/src/core/altcp_alloc.c
${PICO_LWIP_PATH}/src/core/altcp_tcp.c
${PICO_LWIP_PATH}/src/core/tcp.c
${PICO_LWIP_PATH}/src/core/tcp_in.c
${PICO_LWIP_PATH}/src/core/tcp_out.c
${PICO_LWIP_PATH}/src/core/timeouts.c
${PICO_LWIP_PATH}/src/core/udp.c
${CMAKE_CURRENT_LIST_DIR}/random.c
)
target_include_directories(pico_lwip_core INTERFACE
${PICO_LWIP_PATH}/src/include)
add_library(pico_lwip_core4 INTERFACE)
target_sources(pico_lwip_core4 INTERFACE
${PICO_LWIP_PATH}/src/core/ipv4/acd.c
${PICO_LWIP_PATH}/src/core/ipv4/autoip.c
${PICO_LWIP_PATH}/src/core/ipv4/dhcp.c
${PICO_LWIP_PATH}/src/core/ipv4/etharp.c
${PICO_LWIP_PATH}/src/core/ipv4/icmp.c
${PICO_LWIP_PATH}/src/core/ipv4/igmp.c
${PICO_LWIP_PATH}/src/core/ipv4/ip4_frag.c
${PICO_LWIP_PATH}/src/core/ipv4/ip4.c
${PICO_LWIP_PATH}/src/core/ipv4/ip4_addr.c
)
add_library(pico_lwip_core6 INTERFACE)
target_sources(pico_lwip_core6 INTERFACE
${PICO_LWIP_PATH}/src/core/ipv6/dhcp6.c
${PICO_LWIP_PATH}/src/core/ipv6/ethip6.c
${PICO_LWIP_PATH}/src/core/ipv6/icmp6.c
${PICO_LWIP_PATH}/src/core/ipv6/inet6.c
${PICO_LWIP_PATH}/src/core/ipv6/ip6.c
${PICO_LWIP_PATH}/src/core/ipv6/ip6_addr.c
${PICO_LWIP_PATH}/src/core/ipv6/ip6_frag.c
${PICO_LWIP_PATH}/src/core/ipv6/mld6.c
${PICO_LWIP_PATH}/src/core/ipv6/nd6.c
)
# APIFILES: The files which implement the sequential and socket APIs.
add_library(pico_lwip_api INTERFACE)
target_sources(pico_lwip_api INTERFACE
${PICO_LWIP_PATH}/src/api/api_lib.c
${PICO_LWIP_PATH}/src/api/api_msg.c
${PICO_LWIP_PATH}/src/api/err.c
${PICO_LWIP_PATH}/src/api/if_api.c
${PICO_LWIP_PATH}/src/api/netbuf.c
${PICO_LWIP_PATH}/src/api/netdb.c
${PICO_LWIP_PATH}/src/api/netifapi.c
${PICO_LWIP_PATH}/src/api/sockets.c
${PICO_LWIP_PATH}/src/api/tcpip.c
)
# Files implementing various generic network interface functions
add_library(pico_lwip_netif INTERFACE)
target_sources(pico_lwip_netif INTERFACE
${PICO_LWIP_PATH}/src/netif/ethernet.c
${PICO_LWIP_PATH}/src/netif/bridgeif.c
${PICO_LWIP_PATH}/src/netif/bridgeif_fdb.c
${PICO_LWIP_PATH}/src/netif/slipif.c
)
# 6LoWPAN
add_library(pico_lwip_sixlowpan INTERFACE)
target_sources(pico_lwip_sixlowpan INTERFACE
${PICO_LWIP_PATH}/src/netif/lowpan6_common.c
${PICO_LWIP_PATH}/src/netif/lowpan6.c
${PICO_LWIP_PATH}/src/netif/lowpan6_ble.c
${PICO_LWIP_PATH}/src/netif/zepif.c
)
# PPP
add_library(pico_lwip_ppp INTERFACE)
target_sources(pico_lwip_ppp INTERFACE
${PICO_LWIP_PATH}/src/netif/ppp/auth.c
${PICO_LWIP_PATH}/src/netif/ppp/ccp.c
${PICO_LWIP_PATH}/src/netif/ppp/chap-md5.c
${PICO_LWIP_PATH}/src/netif/ppp/chap_ms.c
${PICO_LWIP_PATH}/src/netif/ppp/chap-new.c
${PICO_LWIP_PATH}/src/netif/ppp/demand.c
${PICO_LWIP_PATH}/src/netif/ppp/eap.c
${PICO_LWIP_PATH}/src/netif/ppp/ecp.c
${PICO_LWIP_PATH}/src/netif/ppp/eui64.c
${PICO_LWIP_PATH}/src/netif/ppp/fsm.c
${PICO_LWIP_PATH}/src/netif/ppp/ipcp.c
${PICO_LWIP_PATH}/src/netif/ppp/ipv6cp.c
${PICO_LWIP_PATH}/src/netif/ppp/lcp.c
${PICO_LWIP_PATH}/src/netif/ppp/magic.c
${PICO_LWIP_PATH}/src/netif/ppp/mppe.c
${PICO_LWIP_PATH}/src/netif/ppp/multilink.c
${PICO_LWIP_PATH}/src/netif/ppp/ppp.c
${PICO_LWIP_PATH}/src/netif/ppp/pppapi.c
${PICO_LWIP_PATH}/src/netif/ppp/pppcrypt.c
${PICO_LWIP_PATH}/src/netif/ppp/pppoe.c
${PICO_LWIP_PATH}/src/netif/ppp/pppol2tp.c
${PICO_LWIP_PATH}/src/netif/ppp/pppos.c
${PICO_LWIP_PATH}/src/netif/ppp/upap.c
${PICO_LWIP_PATH}/src/netif/ppp/utils.c
${PICO_LWIP_PATH}/src/netif/ppp/vj.c
${PICO_LWIP_PATH}/src/netif/ppp/polarssl/arc4.c
${PICO_LWIP_PATH}/src/netif/ppp/polarssl/des.c
${PICO_LWIP_PATH}/src/netif/ppp/polarssl/md4.c
${PICO_LWIP_PATH}/src/netif/ppp/polarssl/md5.c
${PICO_LWIP_PATH}/src/netif/ppp/polarssl/sha1.c
)
# SNMPv3 agent
add_library(pico_lwip_snmp INTERFACE)
target_sources(pico_lwip_snmp INTERFACE
${PICO_LWIP_PATH}/src/apps/snmp/snmp_asn1.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_core.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2_icmp.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2_interfaces.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2_ip.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2_snmp.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2_system.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2_tcp.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_mib2_udp.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_snmpv2_framework.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_snmpv2_usm.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_msg.c
${PICO_LWIP_PATH}/src/apps/snmp/snmpv3.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_netconn.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_pbuf_stream.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_raw.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_scalar.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_table.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_threadsync.c
${PICO_LWIP_PATH}/src/apps/snmp/snmp_traps.c
)
# HTTP server + client
add_library(pico_lwip_http INTERFACE)
target_sources(pico_lwip_http INTERFACE
${PICO_LWIP_PATH}/src/apps/http/altcp_proxyconnect.c
${PICO_LWIP_PATH}/src/apps/http/fs.c
${PICO_LWIP_PATH}/src/apps/http/http_client.c
${PICO_LWIP_PATH}/src/apps/http/httpd.c
)
# MAKEFSDATA HTTP server host utility
add_library(pico_lwip_makefsdata INTERFACE)
target_sources(pico_lwip_makefsdata INTERFACE
${PICO_LWIP_PATH}/src/apps/http/makefsdata/makefsdata.c
)
# iperf
add_library(pico_lwip_iperf INTERFACE)
target_sources(pico_lwip_iperf INTERFACE
${PICO_LWIP_PATH}/src/apps/lwiperf/lwiperf.c
)
# SMTP client
add_library(pico_lwip_smtp INTERFACE)
target_sources(pico_lwip_smtp INTERFACE
${PICO_LWIP_PATH}/src/apps/smtp/smtp.c
)
# SNTP client
add_library(pico_lwip_sntp INTERFACE)
target_sources(pico_lwip_sntp INTERFACE
${PICO_LWIP_PATH}/src/apps/sntp/sntp.c
)
# MDNS responder
add_library(pico_lwip_mdns INTERFACE)
target_sources(pico_lwip_mdns INTERFACE
${PICO_LWIP_PATH}/src/apps/mdns/mdns.c
${PICO_LWIP_PATH}/src/apps/mdns/mdns_out.c
${PICO_LWIP_PATH}/src/apps/mdns/mdns_domain.c
)
# NetBIOS name server
add_library(pico_lwip_netbios INTERFACE)
target_sources(pico_lwip_netbios INTERFACE
${PICO_LWIP_PATH}/src/apps/netbiosns/netbiosns.c
)
# TFTP server files
add_library(pico_lwip_tftp INTERFACE)
target_sources(pico_lwip_tftp INTERFACE
${PICO_LWIP_PATH}/src/apps/tftp/tftp.c
)
# MQTT client files
add_library(pico_lwip_mbedtls INTERFACE)
target_sources(pico_lwip_mbedtls INTERFACE
${PICO_LWIP_PATH}/src/apps/altcp_tls/altcp_tls_mbedtls.c
${PICO_LWIP_PATH}/src/apps/altcp_tls/altcp_tls_mbedtls_mem.c
${PICO_LWIP_PATH}/src/apps/snmp/snmpv3_mbedtls.c
)
# All LWIP files without apps
add_library(pico_lwip INTERFACE)
target_link_libraries(pico_lwip INTERFACE
pico_lwip_core
pico_lwip_core4
pico_lwip_core6
pico_lwip_api
pico_lwip_netif
pico_lwip_sixlowpan
pico_lwip_ppp
)
# our arch/cc.h
add_library(pico_lwip_arch INTERFACE)
target_include_directories(pico_lwip_arch INTERFACE
${CMAKE_CURRENT_LIST_DIR}/include)
# our nosys impl
add_library(pico_lwip_nosys INTERFACE)
target_sources(pico_lwip_nosys INTERFACE
${CMAKE_CURRENT_LIST_DIR}/nosys.c
)
target_link_libraries(pico_lwip_nosys INTERFACE
pico_lwip_arch)
if (NOT PICO_LWIP_CONTRIB_PATH)
set(PICO_LWIP_CONTRIB_PATH ${PICO_LWIP_PATH}/contrib)
endif()
pico_register_common_scope_var(PICO_LWIP_CONTRIB_PATH)
# Make lwip_contrib_freertos library, with the FreeRTOS/lwIP code from lwip-contrib
add_library(pico_lwip_contrib_freertos INTERFACE)
target_sources(pico_lwip_contrib_freertos INTERFACE
${PICO_LWIP_CONTRIB_PATH}/ports/freertos/sys_arch.c
)
target_include_directories(pico_lwip_contrib_freertos INTERFACE
${PICO_LWIP_CONTRIB_PATH}/ports/freertos/include
)
target_link_libraries(pico_lwip_contrib_freertos INTERFACE
pico_lwip_arch)
pico_promote_common_scope_vars()
endif()

44
src/rp2_common/pico_lwip/doc.h Normal file
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@ -0,0 +1,44 @@
/**
* \defgroup pico_lwip pico_lwip
* \brief Wrapper libraries for <a href="https://savannah.nongnu.org/projects/lwip/lwIP">lwIP</a>
*
* The following libraries are provided that contain the equivalent lwIP functionality groups:
*
* * \c \b pico_lwip_core -
* * \c \b pico_lwip_core4 -
* * \c \b pico_lwip_core6 -
* * \c \b pico_lwip_netif -
* * \c \b pico_lwip_sixlowpan -
* * \c \b pico_lwip_ppp -
* * \c \b pico_lwip_api -
*
* The following libraries are provided that contain the equivalent lwIP application support:
*
* * \c \b pico_lwip_snmp -
* * \c \b pico_lwip_http -
* * \c \b pico_lwip_makefsdata -
* * \c \b pico_lwip_iperf -
* * \c \b pico_lwip_smtp -
* * \c \b pico_lwip_sntp -
* * \c \b pico_lwip_mdns -
* * \c \b pico_lwip_netbios -
* * \c \b pico_lwip_tftp -
* * \c \b pico_lwip_mbedtls -
*
* The SDK Provides a common set of functionality in \c \p pico_lwip which aggregates:
*
* * \c \b pico_lwip_core -
* * \c \b pico_lwip_core4 -
* * \c \b pico_lwip_core6 -
* * \c \b pico_lwip_netif -
* * \c \b pico_lwip_sixlowpan -
* * \c \b pico_lwip_ppp -
*
* The following additional libraries are provided:
*
* * \c \b pico_lwip - Aggregates the lwIP RAW API: \c \b pico_lwip_core, \c \b pico_lwip_core4, \c \b pico_lwip_core6, \c \b pico_lwip_api, \c \b pico_lwip_netif, \c \b pico_lwip_sixlowpan and \c \b pico_lwip_ppp. It does
* not include \c \b pico_lwip_api, which requires NO_SYS=0. You should include the latter separately if you want it.
*
* * \c \b pico_lwip_arch - lwIP required compiler adapters. This is not included in \c \b pico_lwip in case you wish to replace them.
* * \c \b pico_lwip_nosys - basic stub functions for NO_SYS mode.
*/

79
src/rp2_common/pico_lwip/include/arch/cc.h Normal file
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@ -0,0 +1,79 @@
/*
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __CC_H__
#define __CC_H__
#if NO_SYS
// todo really we should just not allow SYS_LIGHTWEIGHT_PROT for nosys mode (it doesn't do anything anyway)
typedef int sys_prot_t;
#endif
/* define compiler specific symbols */
#if defined (__ICCARM__)
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_STRUCT
#define PACK_STRUCT_END
#define PACK_STRUCT_FIELD(x) x
#define PACK_STRUCT_USE_INCLUDES
#elif defined (__CC_ARM)
#define PACK_STRUCT_BEGIN __packed
#define PACK_STRUCT_STRUCT
#define PACK_STRUCT_END
#define PACK_STRUCT_FIELD(x) x
#elif defined (__GNUC__)
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_STRUCT __attribute__ ((__packed__))
#define PACK_STRUCT_END
#define PACK_STRUCT_FIELD(x) x
#elif defined (__TASKING__)
#define PACK_STRUCT_BEGIN
#define PACK_STRUCT_STRUCT
#define PACK_STRUCT_END
#define PACK_STRUCT_FIELD(x) x
#endif
#define LWIP_PLATFORM_ASSERT(x) do { if(!(x)) while(1); } while(0)
unsigned int pico_lwip_rand(void);
#ifndef LWIP_RAND
// Use ROSC based random number generation, more for the fact that rand() may not be seeded, than anything else
#define LWIP_RAND pico_lwip_rand
#endif
#endif /* __CC_H__ */

26
src/rp2_common/pico_lwip/nosys.c Normal file
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@ -0,0 +1,26 @@
/*
* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "lwip/init.h"
#include "pico/time.h"
#if NO_SYS
/* lwip has provision for using a mutex, when applicable */
sys_prot_t sys_arch_protect(void) {
return 0;
}
void sys_arch_unprotect(sys_prot_t pval) {
(void) pval;
}
/* lwip needs a millisecond time source, and the TinyUSB board support code has one available */
uint32_t sys_now(void) {
return to_ms_since_boot(get_absolute_time());
}
#endif

29
src/rp2_common/pico_lwip/random.c Normal file
View File

@ -0,0 +1,29 @@
/*
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "pico.h"
#include "hardware/structs/rosc.h"
static uint8_t pico_lwip_random_byte(int cycles) {
static uint8_t byte;
assert(cycles >= 8);
assert(rosc_hw->status & ROSC_STATUS_ENABLED_BITS);
for(int i=0;i<cycles;i++) {
// picked a fairly arbitrary polynomial of 0x35u - this doesn't have to be crazily uniform.
byte = ((byte << 1) | rosc_hw->randombit) ^ (byte & 0x80u ? 0x35u : 0);
// delay a little because the random bit is a little slow
busy_wait_at_least_cycles(30);
}
return byte;
}
unsigned int pico_lwip_rand(void) {
uint32_t value = 0;
for (int i = 0; i < 4; i++) {
value = (value << 8u) | pico_lwip_random_byte(32);
}
return value;
}

1
src/rp2_common/tinyusb/CMakeLists.txt
View File

@ -53,5 +53,6 @@ if (EXISTS ${PICO_TINYUSB_PATH}/${TINYUSB_TEST_PATH})
PROPERTIES PROPERTIES
COMPILE_FLAGS "-Wno-stringop-overflow -Wno-array-bounds") COMPILE_FLAGS "-Wno-stringop-overflow -Wno-array-bounds")
endfunction() endfunction()
pico_promote_common_scope_vars() pico_promote_common_scope_vars()
endif() endif()

36
test/kitchen_sink/CMakeLists.txt
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@ -41,11 +41,6 @@ target_link_libraries(kitchen_sink_libs INTERFACE
pico_unique_id pico_unique_id
pico_util pico_util
) )
# todo this is full of warnings atm
#if (TARGET tinyusb_device)
# target_include_directories(kitchen_sink_libs INTERFACE ${CMAKE_CURRENT_LIST_DIR})
# target_link_libraries(kitchen_sink_libs INTERFACE tinyusb_device)
#endif()
add_library(kitchen_sink_options INTERFACE) add_library(kitchen_sink_options INTERFACE)
@ -63,7 +58,7 @@ target_compile_options(kitchen_sink_options INTERFACE
-Wcast-qual -Wcast-qual
-Wfloat-equal -Wfloat-equal
-Wmissing-format-attribute -Wmissing-format-attribute
-Wconversion #-Wconversion
-Wsign-compare -Wsign-compare
$<$<COMPILE_LANGUAGE:C>:-Wstrict-prototypes> $<$<COMPILE_LANGUAGE:C>:-Wstrict-prototypes>
@ -100,6 +95,13 @@ if (COMMAND suppress_tinyusb_warnings)
# TinyUSB itself, so we have to guard against TinyUSB not being present with the above if # TinyUSB itself, so we have to guard against TinyUSB not being present with the above if
suppress_tinyusb_warnings() suppress_tinyusb_warnings()
endif() endif()
if (TARGET pico_lwip)
set_source_files_properties(
${PICO_LWIP_PATH}/src/core/ipv4/ip4_frag.c
PROPERTIES
COMPILE_FLAGS "-Wno-null-dereference")
endif()
target_link_libraries(kitchen_sink_extra_stdio kitchen_sink_libs kitchen_sink_options) target_link_libraries(kitchen_sink_extra_stdio kitchen_sink_libs kitchen_sink_options)
pico_add_extra_outputs(kitchen_sink_extra_stdio) pico_add_extra_outputs(kitchen_sink_extra_stdio)
pico_enable_stdio_usb(kitchen_sink_extra_stdio 1) pico_enable_stdio_usb(kitchen_sink_extra_stdio 1)
@ -119,3 +121,25 @@ add_executable(kitchen_sink_cpp ${CMAKE_CURRENT_LIST_DIR}/kitchen_sink_cpp.cpp)
target_link_libraries(kitchen_sink_cpp kitchen_sink_libs kitchen_sink_options) target_link_libraries(kitchen_sink_cpp kitchen_sink_libs kitchen_sink_options)
pico_set_program_name(kitchen_sink_cpp "Wombat tentacles CPP") pico_set_program_name(kitchen_sink_cpp "Wombat tentacles CPP")
pico_add_extra_outputs(kitchen_sink_cpp) pico_add_extra_outputs(kitchen_sink_cpp)
if (TARGET pico_cyw43_arch)
# for lwipopts.h
add_executable(kitchen_sink_lwip_poll ${CMAKE_CURRENT_LIST_DIR}/kitchen_sink.c)
target_link_libraries(kitchen_sink_lwip_poll kitchen_sink_libs kitchen_sink_options)
pico_add_extra_outputs(kitchen_sink_lwip_poll)
target_link_libraries(kitchen_sink_lwip_poll
pico_cyw43_arch_lwip_poll)
# for lwipopts.h
target_include_directories(kitchen_sink_lwip_poll PRIVATE
${CMAKE_CURRENT_LIST_DIR})
add_executable(kitchen_sink_lwip_background ${CMAKE_CURRENT_LIST_DIR}/kitchen_sink.c)
target_link_libraries(kitchen_sink_lwip_background kitchen_sink_libs kitchen_sink_options)
pico_add_extra_outputs(kitchen_sink_lwip_background)
target_link_libraries(kitchen_sink_lwip_background
pico_cyw43_arch_lwip_threadsafe_background)
# for lwipopts.h
target_include_directories(kitchen_sink_lwip_background PRIVATE
${CMAKE_CURRENT_LIST_DIR})
endif()

3
test/kitchen_sink/kitchen_sink.c
View File

@ -47,6 +47,9 @@
#include "pico/sync.h" #include "pico/sync.h"
#include "pico/time.h" #include "pico/time.h"
#include "pico/unique_id.h" #include "pico/unique_id.h"
#if LIB_PICO_CYW43_ARCH
#include "pico/cyw43_arch.h"
#endif
#include "hardware/structs/adc.h" #include "hardware/structs/adc.h"
#include "hardware/structs/bus_ctrl.h" #include "hardware/structs/bus_ctrl.h"

14
test/kitchen_sink/lwipopts.h Normal file
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@ -0,0 +1,14 @@
#ifndef _LWIPOPTS_H
#define _LWIPOPTS_H
// dummy lwip opts to allow compilation
#define NO_SYS 1
#define LWIP_DHCP 1
#define LWIP_RAW 1
#define LWIP_NETIF_HOSTNAME 1
#define LWIP_NETIF_STATUS_CALLBACK 1
#define LWIP_DNS 1
#define LWIP_SOCKET 0
#define LWIP_NETCONN 0
#endif