Add support for the STM32C0 and the NUCLEO-C071RB.

README.rst

@@ -153,7 +153,7 @@ Following CPUs are supported, check out `Supported Devices`_ for comprehensive l
 +--------------+------------------------------------------------------------+
 | Sony         | CXD56                                                      |
 +--------------+------------------------------------------------------------+
-| ST STM32     | F0, F1, F2, F3, F4, F7, G0, G4, H5, H7,                    |
+| ST STM32     | C0, F0, F1, F2, F3, F4, F7, G0, G4, H5, H7,                |
 |              |                                                            |
 |              | L0, L1, L4, L4+, L5, U5, WB                                |
 +--------------+------------------------------------------------------------+

docs/reference/supported.rst

@@ -95,7 +95,7 @@ Supported MCUs
 |              +-----------------------------+--------+------+-----------+------------------------+-------------------+
 |              | F3                          | ✔      | ✖    | ✖         | stm32_fsdev            |                   |
 |              +-----------------------------+--------+------+-----------+------------------------+-------------------+
-|              | G0, H5                      | ✔      |      | ✖         | stm32_fsdev            |                   |
+|              | C0, G0, H5                  | ✔      |      | ✖         | stm32_fsdev            |                   |
 |              +-----------------------------+--------+------+-----------+------------------------+-------------------+
 |              | G4                          | ✔      | ✖    | ✖         | stm32_fsdev            |                   |
 |              +-----------------------------+--------+------+-----------+------------------------+-------------------+

hw/bsp/board_mcu.h

@@ -107,6 +107,9 @@
 #elif CFG_TUSB_MCU == OPT_MCU_STM32G0
   #include "stm32g0xx.h"
 
+#elif CFG_TUSB_MCU == OPT_MCU_STM32C0
+  #include "stm32c0xx.h"
+
 #elif CFG_TUSB_MCU == OPT_MCU_CXD56
   // no header needed
 

hw/bsp/stm32c0/boards/stm32c071nucleo/STM32C071RBTX_FLASH.ld

@@ -0,0 +1,187 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+**  Abstract    : Linker script for NUCLEO-C071RB Board embedding STM32C071RBTx Device from stm32c0 series
+**                      128KBytes FLASH
+**                      24KBytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+******************************************************************************
+** @attention
+**
+** Copyright (c) 2024 STMicroelectronics.
+** All rights reserved.
+**
+** This software is licensed under terms that can be found in the LICENSE file
+** in the root directory of this software component.
+** If no LICENSE file comes with this software, it is provided AS-IS.
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 24K
+  FLASH    (rx)    : ORIGIN = 0x8000000,   LENGTH = 128K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array (READONLY) : /* The "READONLY" keyword is only supported in GCC11 and later, remove it if using GCC10 or earlier. */
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}

hw/bsp/stm32c0/boards/stm32c071nucleo/board.cmake

@@ -0,0 +1,10 @@
+set(MCU_VARIANT stm32c071xx)
+set(JLINK_DEVICE stm32c071rb)
+
+set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/STM32C071RBTx_FLASH.ld)
+
+function(update_board TARGET)
+  target_compile_definitions(${TARGET} PUBLIC
+    STM32C071xx
+    )
+endfunction()

hw/bsp/stm32c0/boards/stm32c071nucleo/board.h

@@ -0,0 +1,58 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ * Copyright (c) 2023, HiFiPhile
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+// Green LED
+#define GREEN_LED_PORT         GPIOA
+#define GREEN_LED_PIN          GPIO_PIN_5
+#define GREEN_LED_STATE_ON     1
+
+// Blue LED
+#define BLUE_LED_PORT          GPIOC
+#define BLUE_LED_PIN           GPIO_PIN_9
+#define BLUE_LED_STATE_ON      0
+
+// Generic LED
+#define LED_PORT GREEN_LED_PORT
+#define LED_PIN GREEN_LED_PIN
+#define LED_STATE_ON GREEN_LED_STATE_ON
+
+// Button
+#define BUTTON_PORT           GPIOC
+#define BUTTON_PIN            GPIO_PIN_13
+#define BUTTON_STATE_ACTIVE   0
+
+// Enable UART serial communication with the ST-Link
+#define UART_DEV              USART2
+#define UART_GPIO_PORT        GPIOA
+#define UART_GPIO_AF          GPIO_AF1_USART2
+#define UART_TX_PIN           GPIO_PIN_2
+#define UART_RX_PIN           GPIO_PIN_3
+
+#endif /* BOARD_H_ */

hw/bsp/stm32c0/boards/stm32c071nucleo/board.mk

@@ -0,0 +1,13 @@
+CFLAGS += \
+	-DSTM32C071xx
+
+# GCC
+SRC_S_GCC += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32c071xx.s
+LD_FILE_GCC = $(BOARD_PATH)/STM32C071RBTx_FLASH.ld
+
+# IAR
+SRC_S_IAR += $(ST_CMSIS)/Source/Templates/iar/startup_stm32c071xx.s
+LD_FILE_IAR = $(ST_CMSIS)/Source/Templates/iar/linker/stm32c071xx_flash.icf
+
+# For flash-jlink target
+JLINK_DEVICE = stm32c071rb