12f675_fuse_about_to_blow!

[LEDave]

Cheers mackrackit

So the original code would have to receive two good with out a bad. I wonder why Bruce did it that way?

I don't know.....

One thing though, from Bruce's code (and please bear in mind this is the thinking of a newbie here).The only way(as I see it) that MATCH can ever reach a count of two and then move onto 'DECODE' is for the program to run from 'SERIN2' all the way to 'GOTO Main' once and then a second time to 'IF MATCH = 2 THEN DECODE' for MATCH to ever equal 2. Am I missing something here?

' Wait for Synch byte, then get new inbound data & checksum
    SERIN2 D_IN,N2400,[WAIT(Synch),DAT_IN1,DAT_IN2,CHK_SUM,TEST]
    
    T1CON.0 = 0    ' Stop Timer1 once we've received data
    TMR1L = 0      ' Clear low byte
    TMR1H = 0      ' Clear high byte
    
    ' / **** Begin data validation **** /
    
    ' Calculate checksum by adding 2 data bytes together
    CheckSum = DAT_IN1 + DAT_IN2
    
    ' Test new checksum against one received in CHK_SUM
    IF CheckSum != CHK_SUM THEN MAIN ' Failed checksum, return
    
    ' Test data bytes for match
    IF (DAT_IN1) != (DAT_IN2) THEN MAIN ' Failed data comparison, return
    
    MATCH = MATCH + 1        ' We have a match so increment match count
    IF MATCH = 2 THEN DECODE ' Everything matched twice, we're good
    GOTO Main                ' Else do it all over

Dave