Serial comm between two PICs

[rakickv]

Here are the codes of pic1 and pic2.Pic1 have the quartc on 8 MHz but I gave it a DEFINE OSC 4
becouse the pic2 works at 4 MHz.I am shure that everything works in PIC1 exept DEBUG becouse I checkedout.I am shure that PIC2 is running becouse it puts the port-out signals in the right order and it change the PIC2 addresses 00,01,02,03 to zero values (00,00,00,00).PIC2 have an internal OSC and it works at 4 MHz and I can't measure it, but PIC1 works in 8 MHz but I guess it devides the 8MHZ becouse I wrote DEFINE OSC 4.I am wondering if the BAUDRATE is to fast or is the code of DEBUG correct?

[HenrikOlsson]

Hi,

but I guess it devides the 8MHZ becouse I wrote DEFINE OSC 4

Not at all. That's not what DEFINE OSC does, look it up in the manual.

I am wondering if the BAUDRATE is to fast or is the code of DEBUG correct?

Yes, the PIC is running at 8MHz but you're telling the compiler it's running at 4MHz. The compiler calculates the baudrate timings based on 4MHz when in reallity it's running twice as fast - the actual baudrate will be double what you tell it.

/Henrik.

[rakickv]

Ahaa I will change PIC1 code to DEFINE OSC 8 and then I will let you know what will happen.Thanks.