temp.c

#define SPI_HIGH 1
#define SPI_LOW 0
#define SPI_DELAY Delay1000us()

void pushByte(unsigned char byte){
	LATBbits.LATB5 = SPI_HIGH;
	LATBbits.LATB4 = SPI_HIGH;
	SPI_DELAY;
	for(int i = 0; i < 8; i++){
		LATBbits.LATB5 = ((byte >> i) & 1);
		LATBbits.LATB4 = SPI_LOW;
		SPI_DELAY;
		LATBbits.LATB4 = SPI_HIGH;
		SPI_DELAY;
	}
}

void doTransferSoftware(void){
	unsigned char byte;
	int i;
	transferMode = 1;
	pushByte(0);
	pushByte(0);
	pushByte(0);
	pushByte(0);
	transferMode = 2;
	for(i = 0; i < pixelCount; i++){
		signed int toTransfer = (transferOffset + transfered) % pixelCount;
		pushByte(0b11100000 | transferBuffer[toTransfer].A);
		pushByte(transferBuffer[toTransfer].B);
		pushByte(transferBuffer[toTransfer].G);
		pushByte(transferBuffer[toTransfer].R);
	}
	transferMode = 3;
	for(i = 0; i < pixelCount; i++){
		pushByte(0);
		pushByte(0);
		pushByte(0);
		pushByte(0);
	}
	transferMode = 0;
}