Initial Release

src/boards/generic_board.cmake

@@ -0,0 +1,23 @@
+# For boards without their own cmake file, simply include a header
+
+# PICO_CMAKE_CONFIG: PICO_BOARD_HEADER_DIRS, Directors to look for <PICO_BOARD>.h in. This is overridable from the user environment, type=list, default="", group=build
+if (DEFINED ENV{PICO_BOARD_HEADER_DIRS})
+    set(PICO_BOARD_HEADER_DIRS $ENV{PICO_BOARD_HEADER_DIRS})
+    message("Using PICO_BOARD_HEADER_DIRS from environment ('${PICO_BOARD_HEADER_DIRS}')")
+endif()
+set(PICO_BOARD_HEADER_DIRS ${PICO_BOARD_HEADER_DIRS} CACHE STRING "PICO board header directories")
+
+list(APPEND PICO_BOARD_HEADER_DIRS ${CMAKE_CURRENT_LIST_DIR}/include/boards)
+pico_find_in_paths(PICO_BOARD_HEADER_FILE PICO_BOARD_HEADER_DIRS ${PICO_BOARD}.h)
+
+if (EXISTS ${PICO_BOARD_HEADER_FILE})
+    message("Using board configuration from ${PICO_BOARD_HEADER_FILE}")
+    list(APPEND PICO_CONFIG_HEADER_FILES ${PICO_BOARD_HEADER_FILE})
+else()
+    set(msg "Unable to find definition of board '${PICO_BOARD}' (specified by PICO_BOARD):\n")
+    list(JOIN PICO_BOARD_HEADER_DIRS ", " DIRS)
+    string(CONCAT msg ${msg} "   Looked for ${PICO_BOARD}.h in ${DIRS} (additional paths specified by PICO_BOARD_HEADER_DIRS)\n")
+    list(JOIN PICO_BOARD_CMAKE_DIRS ", " DIRS)
+    string(CONCAT msg ${msg} "   Looked for ${PICO_BOARD}.cmake in ${DIRS} (additional paths specified by PICO_BOARD_CMAKE_DIRS)")
+    message(FATAL_ERROR ${msg})
+endif()

src/boards/include/boards/none.h

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2020 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
+// -----------------------------------------------------
+
+#ifndef _BOARDS_NONE_H
+#define _BOARDS_NONE_H
+
+#endif

src/boards/include/boards/pico.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2020 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_H
+#define _BOARDS_PICO_H
+
+#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
+
+#ifndef PICO_DEFAULT_LED_PIN
+#define PICO_DEFAULT_LED_PIN 25
+#endif
+
+#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
+
+// Drive high to force power supply into PWM mode (lower ripple on 3V3 at light loads)
+#define PICO_SMPS_MODE_PIN 23
+
+#ifndef PICO_FLOAT_SUPPORT_ROM_V1
+#define PICO_FLOAT_SUPPORT_ROM_V1 1
+#endif
+
+#ifndef PICO_DOUBLE_SUPPORT_ROM_V1
+#define PICO_DOUBLE_SUPPORT_ROM_V1 1
+#endif
+
+#endif

src/boards/include/boards/vgaboard.h

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2020 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
+// -----------------------------------------------------
+
+#ifndef _BOARDS_VGABOARD_H
+#define _BOARDS_VGABOARD_H
+
+#ifndef PICO_DEFAULT_UART
+#define PICO_DEFAULT_UART 1
+#endif
+
+#ifndef PICO_DEFAULT_UART_TX_PIN
+#define PICO_DEFAULT_UART_TX_PIN 20
+#endif
+
+#ifndef PICO_DEFAULT_UART_RX_PIN
+#define PICO_DEFAULT_UART_RX_PIN 21
+#endif
+
+#ifndef PICO_DEFAULT_LED_PIN
+#define PICO_DEFAULT_LED_PIN 25 // same as Pico
+#endif
+
+// Audio pins. I2S BCK, LRCK are on the same pins as PWM L/R.
+// - When outputting I2S, PWM sees BCK and LRCK, which should sound silent as
+//   they are constant duty cycle, and above the filter cutoff
+// - When outputting PWM, I2S DIN should be low, so I2S should remain silent.
+#define VGABOARD_I2S_DIN_PIN 26
+#define VGABOARD_I2S_BCK_PIN 27
+#define VGABOARD_I2S_LRCK_PIN 28
+
+#define VGABOARD_PWM_L_PIN 28
+#define VGABOARD_PWM_R_PIN 27
+
+#define VGABOARD_VGA_COLOR_PIN_BASE 0
+#define VGABOARD_VGA_SYNC_PIN_BASE 16
+
+// Note DAT2/3 are shared with UART TX/RX (pull jumpers off header to access
+// UART pins and disconnect SD DAT2/3)
+#define VGABOARD_SD_CLK_PIN 5
+#define VGABOARD_SD_CMD_PIN 18
+#define VGABOARD_SD_DAT0_PIN 19
+
+// Note buttons are shared with VGA colour LSBs -- if using VGA, you can float
+// the pin on VSYNC assertion and sample on VSYNC deassertion
+#define VGABOARD_BUTTON_A_PIN 0
+#define VGABOARD_BUTTON_B_PIN 6
+#define VGABOARD_BUTTON_C_PIN 11
+
+#ifndef PICO_SCANVIDEO_COLOR_PIN_BASE
+#define PICO_SCANVIDEO_COLOR_PIN_BASE VGABOARD_VGA_COLOR_PIN_BASE
+#endif
+
+#ifndef PICO_SCANVIDEO_SYMC_PIN_BASE
+#define PICO_SCANVIDEO_SYNC_PIN_BASE VGABOARD_VGA_SYNC_PIN_BASE
+#endif
+
+#ifndef PICO_SD_CLK_PIN
+#define PICO_SD_CLK_PIN VGABOARD_SD_CLK_PIN
+#endif
+
+#ifndef PICO_SD_CMD_PIN
+#define PICO_SD_CMD_PIN VGABOARD_SD_CMD_PIN
+#endif
+
+#ifndef PICO_SD_DAT0_PIN
+#define PICO_SD_DAT0_PIN VGABOARD_SD_DAT0_PIN
+#endif
+
+#define PICO_AUDIO_I2S_DATA_PIN VGABOARD_I2S_DIN_PIN
+#define PICO_AUDIO_I2S_CLOCK_PIN_BASE VGABOARD_I2S_BCK_PIN
+
+#define PICO_AUDIO_PWM_L_PIN VGABOARD_PWM_L_PIN
+#define PICO_AUDIO_PWM_R_PIN VGABOARD_PWM_R_PIN
+
+#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
+
+// Drive high to force power supply into PWM mode (lower ripple on 3V3 at light loads)
+#define PICO_SMPS_MODE_PIN 23
+
+#ifndef PICO_FLOAT_SUPPORT_ROM_V1
+#define PICO_FLOAT_SUPPORT_ROM_V1 1
+#endif
+
+#ifndef PICO_DOUBLE_SUPPORT_ROM_V1
+#define PICO_DOUBLE_SUPPORT_ROM_V1 1
+#endif
+
+#define PICO_VGA_BOARD
+
+#endif