# SPI操作SDCARD

## 概述

该实例工程展示了使用SPI接口读写SD卡。

## 硬件设置
- [SPI引脚](lab_board_app_spi_pin)根据板子型号查看具体信息
- SPI引脚对应好SD卡(模块)引脚

## 运行现象

- 确认硬件无误后，工程正确运行后，串口终端会输出如下信息：
```console
SD Card initialization succeeded
Card Info:
-----------------------------------------------
Card Size in GBytes:    28.97GB
device block Size: 60751872 block
Block Size: 512 Bytes
sdcard wiite/read verify ....
sd block_60751852 write PASSED
sd block_60751852 read PASSED
SD write-read-verify block 0x039effec PASSED
sd block_60751853 write PASSED
sd block_60751853 read PASSED
SD write-read-verify block 0x039effed PASSED
sd block_60751854 write PASSED
sd block_60751854 read PASSED
SD write-read-verify block 0x039effee PASSED
sd block_60751855 write PASSED
sd block_60751855 read PASSED
SD write-read-verify block 0x039effef PASSED
sd block_60751856 write PASSED
sd block_60751856 read PASSED
SD write-read-verify block 0x039efff0 PASSED
sd block_60751857 write PASSED
sd block_60751857 read PASSED
SD write-read-verify block 0x039efff1 PASSED
.......
sdcard wiite/read speed test....
SD write-read-verify block range 0x039effec-0x039effff PASSED
Write Speed: 360.90KB/s, Read Speed: 3256.36KB/s
Test completed, PASSED

```