ZYNQ SD卡读写

最新推荐文章于 2025-06-09 14:38:50 发布

crazyMadKing

最新推荐文章于 2025-06-09 14:38:50 发布

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分类专栏： vivado

本文链接：https://blog.youkuaiyun.com/lichen_6398/article/details/87559746

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首先新建vivado工程

在vivado 中编辑 zynq 如下图选择sd卡

再如下图配置

编译完成

运行sdk

新建工程

在新工程的bsp处如下设置

即可配置打开sd卡

再参照xilinx 官方例程即可对sd卡实现读写操作。

具体读写代码如下：

//初始化

int SD_Init() {
   FRESULT rc;
   rc = f_mount(&fatfs, "", 0);
   if (rc) {
       xil_printf("ERROR: f_mount returned %d\r\n", rc);
       return XST_FAILURE;
   }
   return XST_SUCCESS;
}

//读sd卡

int SD_Transfer_read(char *FileName, u32 DestinationAddress, u32 ByteLength) {
   FIL fil;
   FRESULT rc;
   UINT br;

   rc = f_open(&fil, FileName, FA_READ);
   if (rc) {
       xil_printf("ERROR:f_open returned %d\r\n", rc);
       return XST_FAILURE;
   }
   rc = f_lseek(&fil, 0);
   if (rc) {
       xil_printf("ERROR:f_open returned %d\r\n", rc);
       return XST_FAILURE;
   }
   rc = f_read(&fil, (void*) DestinationAddress, ByteLength, &br);
   if (rc) {
       xil_printf("ERROR:f_open returned %d\r\n", rc);
       return XST_FAILURE;
   }
   rc = f_close(&fil);
   if (rc) {
       xil_printf("ERROR:f_open returned %d\r\n", rc);
       return XST_FAILURE;
   }
   return XST_SUCCESS;
}

//写sd卡
int SD_Transfer_write(char *FileName, u32 SourceAddress, u32 ByteLength) {
   FIL fil;
   FRESULT rc;
   UINT bw;

   rc = f_open(&fil, FileName, FA_CREATE_ALWAYS | FA_WRITE);
   if (rc) {
       xil_printf("ERROR : f_open returned %d\r\n", rc);
       return XST_FAILURE;
   }
   rc = f_lseek(&fil, 0);
   if (rc) {
       xil_printf("ERROR : f_lseek returned %d\r\n", rc);
       return XST_FAILURE;
   }
   rc = f_write(&fil, (void*) SourceAddress, ByteLength, &bw);
   if (rc) {
       xil_printf("ERROR : f_write returned %d\r\n", rc);
       return XST_FAILURE;
   }
   rc = f_close(&fil);
   if (rc) {
       xil_printf("ERROR : f_close returned %d\r\n", rc);
       return XST_FAILURE;
   }
   return XST_SUCCESS;
}