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求助6747SPI问题



采用6747SPI与AD通信,需要多片AD,但是在设置CS为普通IO使用后,一直通信不成功。

将CS脚改为SPI作用就可以正常通信了。

修改时,在读写数据前拉低CS,完成后拉高。

还请指教!谢谢!