rtthread qspi w25q256 sfud

1.查詢qspi配置過程

　　文件路徑： /drivers/board.h

　　

 

 

 

   　#define BSP_USING_QSPI     //注釋中詳細描述了qspi配置過程

2.使能rtt qspi驅動

　　　　打開 RT-Thread Settings
　　　　選擇SPI功能后，右鍵詳細配置：分別勾

　　

3.使能使用 qspi bsp

　　打開 /drivers/board.h

　　#define BSP_USING_QSPI  

4.初始化qspi硬件

　　通過 stm32cubemx工具使能qspi硬件，在一下路徑

　　\Core\Src\stm32f7xx_hal_msp.c中將HAL_QSPI_MspInit拷貝到 /drivers/board.c中

　　

 

 

 5.打開相應的HAL庫

　　打開 /drivers/ stm32f7xx_hal_conf.h

　　使能 #define HAL_QSPI_MODULE_ENABLED
　　使能 #define HAL_SPI_MODULE_ENABLED

 6.編譯驗證

　　燒錄，在串口終端輸入**>list_device   可以看到spi總線

　　

 

7.掛載W25qspi設備

 　　

#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
/**
  *  讀取qspi狀態寄存器2
 * @param device : qspi設備
 * @return
 */
char w25qxx_read_status_register2(struct rt_qspi_device *device)
{
    /* 0x35 read status register2 */
    char instruction = 0x35, status;
    rt_qspi_send_then_recv(device, &instruction, 1, &status, 1);//讀取狀態寄存器
    return status;
}
/**
 * qspi寫使能
 * @param device : qspi設備
 */
void w25qxx_write_enable(struct rt_qspi_device *device)
{
    /* 0x06 write enable */
    char instruction = 0x06;
    rt_qspi_send(device, &instruction, 1);//發送數據
}
/**
  *   使能qspi模式
 * @param device : qspi設備
 */
void w25qxx_enter_qspi_mode(struct rt_qspi_device *device)
{
    char status = 0;
    /* 0x38 enter qspi mode */
    char instruction = 0x38;
    char write_status2_buf[2] = {0};

    /* 0x31 write status register2 */
    write_status2_buf[0] = 0x31;

    status = w25qxx_read_status_register2(device);//讀取狀態寄存器2
    if (!(status & 0x02))//判讀當前flash通信模式
    {
        status |= 1 << 1;
        w25qxx_write_enable(device);              //w25q寫使能
        write_status2_buf[1] = status;              //寫狀態寄存器
        rt_qspi_send(device, &write_status2_buf, 2);//
        rt_qspi_send(device, &instruction, 1);//設置qspi模式
        rt_kprintf("flash already enter qspi mode\n");
        rt_thread_mdelay(10);
    }
}

/**
 *掛在設備到qspi總線上
 * @return 掛載狀態
 */
static rt_err_t rt_hw_qspi_flash_with_sfud_init(void)
{
    /*W25Q256掛在qspi總線上*/
    rt_err_t ret = stm32_qspi_bus_attach_device("qspi1", "qspi10", RT_NULL, 4, w25qxx_enter_qspi_mode, RT_NULL);
    if (ret != RT_EOK)
    {
        rt_kprintf("qspi attach device failed\n");
        return -RT_ERROR;
    }
    rt_kprintf("qspi attach device success\n");
    return RT_EOK;
}

/*設備自動初始化 */
INIT_DEVICE_EXPORT(rt_hw_qspi_flash_with_sfud_init);

static int rt_hw_qspi_block_device_init(void)
{
    /*   W25Q256 注冊為快設備*/
    if (RT_NULL == rt_sfud_flash_probe("W25Q256", "qspi10"))
    {
        rt_kprintf("flash sfud failed\n");
        return -RT_ERROR;
    }
    rt_kprintf("flash sfud success\n");
    return RT_EOK;
}

/*設備自動初始化 */
INIT_DEVICE_EXPORT(rt_hw_qspi_block_device_init);

#define W25Q_SPI_DEVICE_NAME     "qspi10"
static void qspi_w25q_sample(int argc, char *argv[])
{
    struct rt_spi_device *qspi_dev_w25q;
    char name[RT_NAME_MAX];
    rt_uint8_t w25x_read_id = 0x90;
    rt_uint8_t id[5] = {0};

    if (argc == 2)
    {
        rt_strncpy(name, argv[1], RT_NAME_MAX);
    }
    else
    {
        rt_strncpy(name, W25Q_SPI_DEVICE_NAME, RT_NAME_MAX);
    }

    /* 查找 spi 設備獲取設備句柄 */
    qspi_dev_w25q = (struct rt_spi_device *)rt_device_find(name);//根據 SPI 設備名稱查找設備獲取設備句柄
    if (!qspi_dev_w25q)
    {
        rt_kprintf("qspi sample run failed! can't find %s device!\n", name);
    }
    else
    {
        /* 方式1：使用 rt_spi_send_then_recv()發送命令讀取ID */
        rt_qspi_send_then_recv(qspi_dev_w25q, &w25x_read_id, 1, id, 5);//先發送后接收數據id
        rt_kprintf("use rt_qspi_send_then_recv() read w25q ID is:%x%x\n", id[3], id[4]);
    }
}
/* 導出到 msh 命令列表中 */
MSH_CMD_EXPORT(qspi_w25q_sample, qspi w25q sample);

　　　

8.創建 快設備

　　

 

 

 

9.掛載文件系統

　　使能 fatfs
　　打開 RT-Thread Settings
　　選擇fatfs功能后，右鍵詳細配置：分別勾選

　　

 

 

 

static int mnt_init(void)
{
    dfs_mkfs("elm", "W25Q256");//格式化設備
    if(dfs_mount("W25Q256", "/", "elm", 0, 0)==0)//掛載文件
    {
        rt_kprintf("dfs mount success\r\n");
        return RT_EOK;
    }else {
        rt_kprintf("dfs mount failed\r\n");
        return -RT_ERROR;
    }
}
/* 組件自動初始化 */
INIT_COMPONENT_EXPORT(mnt_init);

10.編譯驗證
　　燒錄，在串口終端輸入 ls