我现在用的板子上一组SPI已经被用了(GPIO56,57,58,59),...由于实际需要,我需要将GPIO16.17.18.19也用作SPI,但是SpiaRegs.SPITXBUF=a;意思不是说SPI发送缓存里只能放一组数吗,这个怎么解决呢?
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