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求助啊



谁能指导指导啊………………就是我想通过spi往外部设备发指令,比如我想发0x11,发送的数据宽度是8位,那我应该往发送寄存器SPIDAT1里写多少值啊?如果外部设备返回一个0x01,在接收寄存器SPIBUF读到的值是多少啊?谁弄过的会的伸出援手吧,感激不尽啊