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现在做一款关于AFE4490电路板，SPI通信问题一直解决不了，读写寄存器的值一直是0x00；我把我的SPI读写程序下载到其他开发板，读取数值一直是0xFF，该问题如何解决？应该检查什么方便问题？求指教
先对比一下有什么不同, 特别地查查硬件有没有问题, 供电都正常么
