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Rwyoung, thank you for the useful information. It turned out, that my compiler (as opposed to the help index) also supports output_toggle function.

[spam], if you press the 1 key and RELAIS_K1 is low, !input(RELAIS_K1) is high, which is placed to RELAIS_K1. Pay attention to !input.

Try to use

case 'x':
output_bit(RELAIS_Kx,!input(RELAIS_Kx));
break;

where 1, 2, 3 and 4 should be instead of x.

My version of compiler 3.222 has no HIGH option. So, it's time to think about version update. Smile

Thushi, here are a bit different interrupts, but the code shows, how to set priorities.

#include <18F1320.h>
#device HIGH_INTS=TRUE
#fuses HS
#fuses BORV42, BROWNOUT, PUT
#fuses NOWDT
...

This is a similar topic:
http://www.ccsinfo.com/forum/viewtopic.php?t=22062

Is it enough for your task to make some output streams with different settings and switch between them at runtime?

Good luck! Very Happy

LIN.c

// LIN Functions

linStatus linSetup(void)
{
OpenUSART(USART_TX_INT_OFF & USART_RX_INT_OFF & USART_ASYNCH_MODE &
USART_EIGHT_BIT & USART_ ...

USART.c

// Hardware USART Functions

/********************************************************************
* Function Name: OpenUSART *
* Retur ...

Board.c

// PIC Board

void B_FlashOnStart()
{
const int8 FlashTime = 100;
int i = 0;

for(i=0; i<=1; i++)
{
output_high(G2_LED);
...

Board.h

// PIC Board

#include <18F4680.h>
#fuses H4, WDT4096, NOPROTECT
#use delay(clock=40000000)

// Settings for RS-232
#use rs232(baud=9600, xmit=PIN_B0, rcv=PIN_B1, ...

Main file

// Main program file (LIN)

// Header files
#include "Board.h"

#include "Timers.h"
#include "HW.h"
#include "USART.h"
#include & ...

Fabri,

A code, which I am giving you now, is for LIN Master node. You can see the LIN Master messages via RS-232 and Serial Port Monitor. It should be repeated sequence

00 55 C4 00 00 FF
00 55 ...

Hi Fabri,

Yes, it's OK. Do you have any tool to monitor LIN bus activity?