Strange SPI Problem with PIC18F2553

[zappedOne]

pic spi probleme

Hi

I have set up a master and a slave PIC using the SPI Library.
I am using the two PWM modules on each PIC.

My problem is when I write a value to the slave PWM modules over SPI it always gets doubled??

The time settings and crystals for both PICs are all the same values.

I can fix the problem with the bottom two lines of code:

  CCPR1L = ReadSPI();
		CCPR2L = ReadSPI();
		
		CCPR1L = (CCPR1L/2);
		CCPR2L = (CCPR2L/2);

But I would really like to discover what I am actually doing wrong...


This is most of the relevant code for the Master:

void parse_PWM_packet(void)
{
	
	unsigned char value1;
	unsigned char value2;
	unsigned char value3;
	unsigned char value4;

	value1 = extract_number (kUINT);
	value2 = extract_number (kUINT);
	value3 = extract_number (kUINT);
	value4 = extract_number (kUINT);

	if (error_byte)
	{
		return;
	}


	CCPR1L = value1; 
	CCPR2L = value2;
	
	OpenSPI(SPI_FOSC_4,MODE_01,SMPMID);
	

	WriteSPI(value3);
        while (0 != (WriteSPI(value3)))
	{    
 	WriteSPI(value3);
	printf ((far rom char *)"PWM3 collision");
	}
	

	WriteSPI(value4);
        while (0 != (WriteSPI(value4)))
	{    
 	WriteSPI(value4);
	printf ((far rom char *)"PWM4 collision");
	}   

	CloseSPI();

	print_ack ();
}

And this is most of the relevant code for the Slave:

	OpenSPI(SLV_SSOFF,MODE_01,SMPMID);
		
		CCPR1L = ReadSPI();
		CCPR2L = ReadSPI();

	CloseSPI();

Thanks for any suggestions