我們要在rtthread studio 開發環境中建立stm32h743xih6芯片的工程。我們使用一塊stm32h743及fpga的核心板完成相關實驗，核心板如圖：


1.建立新工程，選擇相應的芯片型號及debug引腳及調試器

2.編譯下載，可以看到串口打印正常

3.在工程中打開cubemx，設置串口及時鐘，設置內容如上一章節，spi的管腳設置需要參考原理圖。





4.打開drv_clk.c更改調試級別后編譯下載可以看到打印時鐘信息。


5.打開軟件包中心，打開spi和sfud框架，如圖：

6.保存后，在board.h中打開spi注冊，如圖：

7.編譯下載，發送list device指令查詢下設備，如圖可以看到有spi設備了

8.在applications文件夾下添加程序,注意，flash片選腳為G10.


這里需要修改為片選引腳

代碼如下：

#define SPI_BUS_NAME                        "spi1"
#define W25Q_SPI_DEVICE_NAME                "spi10"
#define W25Q_FLASH_NAME                     "W25Q512"
//FAL_USING_NOR_FLASH_DEV_NAMErt_uint8_t wData[4096] = {"SPI bus write data to W25Q512 flash."};
rt_uint8_t rData[4096];static int rt_hw_spi_flash_init()
{rt_err_t ree = RT_EOK;ree = rt_hw_spi_device_attach(SPI_BUS_NAME, W25Q_SPI_DEVICE_NAME, GPIOA, GPIO_PIN_15);/* 使用 SFUD 探測 spi10 從設備，并將 spi10 連接的 flash 初始化為塊設備，名稱 W25Q128 */if (RT_NULL == rt_sfud_flash_probe(FAL_USING_NOR_FLASH_DEV_NAME, W25Q_SPI_DEVICE_NAME)){return -RT_ERROR;}return ree;
}
INIT_COMPONENT_EXPORT(rt_hw_spi_flash_init);
static void sfud_w25q_sample(void)
{rt_spi_flash_device_t flash_dev;sfud_flash_t sfud_dev;struct rt_device_blk_geometry geometry;// 1- use sfud apirt_kprintf("\n 1 - Use SFUD API \n");sfud_dev = rt_sfud_flash_find_by_dev_name(W25Q_FLASH_NAME);if(sfud_dev == RT_NULL){rt_kprintf("sfud can't find %s device.\n", W25Q_FLASH_NAME);}else{rt_kprintf("sfud device name: %s, sector_count: %d, bytes_per_sector: %d, block_size: %d.\n",sfud_dev->name, sfud_dev->chip.capacity / sfud_dev->chip.erase_gran,sfud_dev->chip.erase_gran, sfud_dev->chip.erase_gran);if(sfud_erase_write(sfud_dev, 0x002000, sizeof(wData), wData) == SFUD_SUCCESS)rt_kprintf("sfud api write data to w25q128(address:0x2000) success.\n");if(sfud_read(sfud_dev, 0x002000, sizeof(rData), rData) == SFUD_SUCCESS)rt_kprintf("sfud api read data from w25q128(address:0x2000) is:%s\n", rData);}// 2- use rt_device apirt_kprintf("\n 2 - Use rt_device API \n");flash_dev = (rt_spi_flash_device_t)rt_device_find(W25Q_FLASH_NAME);if(flash_dev == RT_NULL){rt_kprintf("rt_device api can't find %s device.\n", W25Q_FLASH_NAME);}else{rt_device_open(&flash_dev->flash_device, RT_DEVICE_OFLAG_OPEN);if(rt_device_control(&flash_dev->flash_device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry) == RT_EOK)rt_kprintf("spi flash device name: %s, sector_count: %d, bytes_per_sector: %d, block_size: %d.\n",flash_dev->flash_device.parent.name, geometry.sector_count, geometry.bytes_per_sector, geometry.block_size);if(rt_device_write(&flash_dev->flash_device, 0x03, wData, 1) > 0)rt_kprintf("rt_device api write data to w25q128(address:0x3000) success.\n");if(rt_device_read(&flash_dev->flash_device, 0x03, rData, 1) > 0)rt_kprintf("rt_device api read data from w25q128(address:0x3000) is:%s\n", rData);rt_device_close(&flash_dev->flash_device);}
}
MSH_CMD_EXPORT(sfud_w25q_sample, sfud w25q128 sample);

9.編譯下載可以看到打印信息，flash已經被檢測到

10.讀取下flash數據，可以看到讀取成功

可以看到我們就可以通過sfud指令讀寫flash了。掛載的w25q64可以被正常操作，其余操作指令如下，可以嘗試：

sf probe [spi_device]           - probe and init SPI flash by given 'spi_device'
sf read addr size               - read 'size' bytes starting at 'addr'
sf write addr data1 ... dataN   - write some bytes 'data' to flash starting at 'addr'
sf erase addr size              - erase 'size' bytes starting at 'addr'
sf status [<volatile> <status>] - read or write '1:volatile|0:non-volatile' 'status'
sf bench                        - full chip benchmark. DANGER: It will erase full chip!