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28035 spi fifo



SpiaRegs.SPIFFTX.all=0xC022;      // Enable FIFO's, set TX FIFO level to 4

  SpiaRegs.SPIFFRX.all=0x0022;      // Set RX FIFO level to

例程中TXFFIL4-0与RXFFIL4-0均为2,为什么注释中是4?