在znp_spi.c中为什么找不到spi的读写函数呀,类似于HalUARTWrite,HalUARTRead这样的函数。还有
MT_RPC_CMD_SREQ = 0x20,
MT_RPC_CMD_AREQ = 0x40,
MT_RPC_CMD_SRSP = 0x60,
分别具体指的是什么事件?
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