Parallel Comm Project

[osaboy]

Hello all, I have a question about programming pic18f series pics for parallel communication using PSP.

My project involves communication with another pic using a certain protocol we have established. The packets to be exchanged are of this format

[sync][type][data]

[sync] = 0x05 (this tells me that i'm about to receive data) (1 Byte)
[type] = tells me what kinda packet i'm gonna get (ACK, NACK, data etc)
(1 Byte)
[data] = actual data (many Bytes)

I'm am not sure how to go about reading in the data i get after a psp interrupt. should it be like this

#define portd 8
#define type_buffer = ??
#define data_buffer = ??

during the psp interrupt
if(portd == 0x05)
{
type_buffer = portd;
}
//depending on the type_buffer read the data
//dunno how to read data of more the 1 Byte




*************************
Thank you for any assitance

[PCM programmer]

See the CCS example file EX_PSP.C. It has an example of an #int_psp
interrupt service routine. Look in this folder for the file:

c:\program files\picc\examples