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使用QSPI外扩Falsh

编写bootload程序​

由于无法配置H7的默认上电运行位置，所以，我们必须编写一个bootloader程序用于单片上电后，跳转到外部Flash运行。

bootloader程序使用STMcubx生成的Core文件夹下的文件制作

STM32CUBX配置​

选择对应的芯片型号，进入配置界面，在进入配置界面之前会询问你是否要使用默认的Cortex-M7的配置，需要选择是。

接下来，我们配置一些基本的配置外设

  • Cortex-M7

    关闭MPU设置

    关闭ICache和DCache

    配置好的界面如下参考：

    Cortex-m7-config

  • 配置时钟

    RCC-config

    clock-config

  • 配置串口（非必要！！）

    需要注意的是：H7系列串口1的默认的映射端口不是PA9和PA10需要自己根据原理图修改

    uart-config

选择合适的位置生成工程，工具链选择：CMake或者STM32CubeIDE。

编写bootloader程序​

在生成的文件中，新建一个文件夹用于专门存放bootloader程序，创建好的文件目录。

├─bootloader
│  ├─inc
│  └─src

为bootloader编写CMake文件。

project(bootloader)

set(SOC_ST_PATH "${CMAKE_SOURCE_DIR}")
set(SOC_DRIVERS_CMSIS_PATH ${SOC_ST_PATH}/Drivers/CMSIS)
set(SOC_DRIVERS_STMH7_PATH ${SOC_ST_PATH}/Drivers/STM32H7xx_HAL_Driver)

add_executable(${PROJECT_NAME})

target_link_options(${PROJECT_NAME}
    PRIVATE 
        -T "${PROJECT_SOURCE_DIR}/STM32H7B0VBTx_FLASH.ld"
        "-Wl,-Map=${PROJECT_NAME}.map"
)

target_compile_definitions(${PROJECT_NAME} PRIVATE 
	USE_HAL_DRIVER 
	STM32H7B0xx
)

target_include_directories(${PROJECT_NAME} PRIVATE
    inc

    ${SOC_DRIVERS_CMSIS_PATH}/Include
    ${SOC_DRIVERS_CMSIS_PATH}/Device/ST/STM32H7xx/Include
    ${SOC_DRIVERS_STMH7_PATH}/Inc
    ${SOC_DRIVERS_STMH7_PATH}/Inc/Legacy
)

file(GLOB_RECURSE SRC_SOURCE "src/*.*")

target_sources(${PROJECT_NAME} PRIVATE
    startup_stm32h7b0xx.s
    ${SRC_SOURCE}
    
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_cortex.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_rcc.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_rcc_ex.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_flash.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_flash_ex.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_gpio.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_hsem.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_dma.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_dma_ex.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_mdma.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_pwr.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_pwr_ex.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_exti.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_tim.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_tim_ex.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_uart.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_uart_ex.c
    ${SOC_DRIVERS_STMH7_PATH}/Src/stm32h7xx_hal_ospi.c
)

add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_BINARY_DIR}/device/board/fk/bootloader/bootloader.elf ${CMAKE_BINARY_DIR}
    COMMENT "Copying bootloader.elf to build directory"
)

添加文件

配置openocd下载文件​

  • mww命令解析

  • mmw命令解析

    给特定地址设置值和清除值

配置vscode task​

{
	"version": "2.0.0",
	"tasks": [
		{
			"type": "cmake",
			"label": "build bootloader",
			"command": "build",
			"targets": [
				"all"
			],
			"preset": "${command:cmake.activeBuildPresetName}",
			"group": "build",
			"problemMatcher": [],
			"detail": "build bootloader"
		},
		{
			"label": "flash bootloader",
			"detail": "片内编译 下载",
			"type": "shell",
			"command": "openocd",
			"args": [
				"-f",
				"${workspaceFolder}\\openocd.cfg",
				"-c \"program ./out/Debug/bootloader.elf\"",
				"-c",
				"reset",
				"-c",
				"shutdown"
			],
			"dependsOn": [
				"build bootloader"
			],
			"group": {
				"kind": "build"
			}
		},
		{
			"label": "flash application",
			"detail": "片外编译 下载",
			"group": "build",
			"type": "shell",
			"command": "openocd",
			"args": [
				"-f",
				"${workspaceFolder}\\openocd-external.cfg",
				"-c \"program ./out/Debug/Image.elf\"",
				"-c",
				"reset",
				"-c",
				"shutdown"
			],
			"dependsOn": [
				"build bootloader"
			],
		},
	]
}

配置调试外部falsh代码​

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug Image",
            "cwd": "${workspaceFolder}",
            "executable": "${workspaceFolder}/out/Debug/Image.elf",
            "request": "launch",
            "type": "cortex-debug",
            "runToEntryPoint": "main",
            "servertype": "openocd",
            "configFiles": [
                "${workspaceRoot}/openocd-external.cfg"
            ],
        }
    ]
}

参考链接：

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