5 采用SPI的方式挂在文件系统

发布于 2024-05-14 12:38:21 浏览：626 订阅该版

4 个回答

RT_Jerry 2024-05-14

这家伙很懒，什么也没写！

```c
/* Includes ------------------------------------------------------------------*/
#include <sdCard.h>
#include <spi_msd.h>
#include <dfs_fs.h>//dfs_mount

/* Private define ------------------------------------------------------------*/
#define DBG_TAG "sdCard"	/* 定义打印出日志的文件名 */
#define DBG_LVL DBG_LOG	/* 定义打印出日志的等级(DBG_ERROR > DBG_WARNING > DBG_INFO > DBG_LOG)  */
#include <rtdbg.h>	/*Debug宏定义*/

#define SDCard_SPI_BUS              "spi1"    // SPI总线
#define SDCard_SPI_Device           "spi10"   // SPI设备0

#define SDCard_CS_PIN                GET_PIN(A, 4)    // CS片选
#define SDCard_CS_SET                rt_pin_write(SDCard_CS_PIN, PIN_HIGH)
#define SDCard_CS_RESET              rt_pin_write(SDCard_CS_PIN, PIN_LOW)
/* Private variables ---------------------------------------------------------*/
/* Function ------------------------------------------------------------------*/
/* 函数功能: SDCard SPI端口初始化
 * 输入参数:null
 * 返 回 值: null
 * 说    明:
 */
int SDCard_SPI_Init(void)
{
    struct rt_spi_device *spi_device = RT_NULL;
    struct rt_spi_configuration cfg;

/* 1.初始化CS片选和DRDY引脚 */
    rt_pin_mode(SDCard_CS_PIN, PIN_MODE_OUTPUT); //输出

/* 2.分配设备内存 */
    spi_device = (struct rt_spi_device *) rt_malloc(sizeof(struct rt_spi_device));
    if (RT_NULL == spi_device)
    {
        LOG_E("Failed to malloc the %s device.", SDCard_SPI_Device);
        return -RT_ENOMEM;
    }

/* 3.挂载SPI设备 */
    if (RT_EOK != rt_spi_bus_attach_device_cspin(spi_device, SDCard_SPI_Device, SDCard_SPI_BUS, SDCard_CS_PIN,RT_NULL))
    {
        LOG_E("Failed to attach the %s device.", SDCard_SPI_Device);
        return -RT_ERROR;
    }

/* 4.配置SPI设备 */
    cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_3 | RT_SPI_MSB; //模式：主模式
    cfg.data_width = 8; //数据宽度：8位
    cfg.max_hz = 84 * 1000 * 1000 / 300; //最大频率：20M
    rt_spi_configure(spi_device, &cfg);

if(RT_EOK!=msd_init("sd0", SDCard_SPI_Device))
    {
        LOG_E("msd_init 失败");
    }
    LOG_I("SDCard_SPI_Init 成功");

return RT_EOK;
}
int ss(void)
{
    if(dfs_mkfs("sd0", SDCard_SPI_Device)==0)
    {
        LOG_I("dfs_mkfs initialized!");
    }
    else {
        LOG_E("dfs_mkfs Failed");
    }

rt_thread_mdelay(1500);
    int iRet = dfs_mount("sd0", "/", "elm", 0, 0);
    if (iRet == 0)
    {
        LOG_I("Filesystem initialized!");
    }
    else
    {
        LOG_E("Failed to initialize filesystem %d!", iRet);
    }
    return 0;
}
MSH_CMD_EXPORT(ss, sdcard_mount);
```