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Add pico_get_unique_board_id_string API (#281)

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* Add pico_get_unique_board_id_string API

Add a new API to pico_unique which will turn the unique ID into a
canonical text string.

Use this API to update the USB device serial number in stdio_usb.

Supercedes #280

* Clean up -Wconversion=error issues

* Address review comments, fix api typing

Use cleaner binary-to-hex conversion.  Update the length parameter to
use uint per the SDK standard .
This commit is contained in:
Earle F. Philhower, III
2021-03-30 07:04:58 -07:00
committed by GitHub
parent 98574564b8
commit 3c0309c10e
4 changed files with 38 additions and 3 deletions
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3
src/rp2_common/pico_stdio_usb/CMakeLists.txt
View File

@ -13,9 +13,10 @@ if (TARGET tinyusb_device_unmarked)
tinyusb_device_unmarked
pico_stdio
pico_time
pico_unique_id
)
target_compile_definitions(pico_stdio_usb INTERFACE
PICO_STDIO_USB=1
)
endif()
endif()

12
src/rp2_common/pico_stdio_usb/stdio_usb_descriptors.c
View File

@ -30,6 +30,7 @@
#include "tusb.h"
#include "pico/stdio_usb/reset_interface.h"
#include "pico/unique_id.h"
#define USBD_VID (0x2E8A) // Raspberry Pi
#define USBD_PID (0x000a) // Raspberry Pi Pico SDK CDC
@ -98,10 +99,12 @@ static const uint8_t usbd_desc_cfg[USBD_DESC_LEN] = {
#endif
};
static char usbd_serial_str[PICO_UNIQUE_BOARD_ID_SIZE_BYTES * 2 + 1];
static const char *const usbd_desc_str[] = {
[USBD_STR_MANUF] = "Raspberry Pi",
[USBD_STR_PRODUCT] = "Pico",
[USBD_STR_SERIAL] = "000000000000", // TODO
[USBD_STR_SERIAL] = usbd_serial_str,
[USBD_STR_CDC] = "Board CDC",
#if PICO_STDIO_USB_ENABLE_RESET_VIA_VENDOR_INTERFACE
[USBD_STR_RPI_RESET] = "Reset",
@ -121,6 +124,11 @@ const uint16_t *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
#define DESC_STR_MAX (20)
static uint16_t desc_str[DESC_STR_MAX];
// Assign the SN using the unique flash id
if (!usbd_serial_str[0]) {
pico_get_unique_board_id_string(usbd_serial_str, sizeof(usbd_serial_str));
}
uint8_t len;
if (index == 0) {
desc_str[1] = 0x0409; // supported language is English
@ -141,4 +149,4 @@ const uint16_t *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
return desc_str;
}
#endif
#endif