Hi all,

Are you familiar with CCS C compiler for PIC?

I wrote a simple SPI slave code as below. Somehow, the interrupt happens
every two transmitions from the master. The slave only gets interrupted
after the second byte is sent from the master IC.  The delay time
between each byte of data is 1 second.  Did I do something wrong?

void InitSPI()
{
setup_spi(SPI_SLAVE | SPI_L_TO_H);
enable_interrupts(INT_SSP);
enable_interrupts(GLOBAL);
}

#INT_SSP
SPI_ISR()
{
spiBuf3 = spiBuf2;
spiBuf2 = spiBuf1;
spiBuf1 = spi_read(0x55);
}

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