wouter van ooijen wrote:
>> I have been working in my spare time on a  way to use ONE pin as a 
>> bidirectional debug tool
>>     
>
> There a is one-pin bi-directional software UART in my WLoader firmware.
>
> Wouter van Ooijen
>
> -- -------------------------------------------
> Van Ooijen Technische Informatica: www.voti.nl
> consultancy, development, PICmicro products
> docent Hogeschool van Utrecht: www.voti.nl/hvu
>  
>  
>
>   
I remembered that, but I'd never looked closely at it. Got PIC code 
samples? That might be a VERY
good idea as a debug tool. Since each PIC is slightly different, for 
what PIC's have you written PIC code? Also,
since it is a UART, can you use internal RC oscillators, since some PICs 
have very imprecise oscillators? But I
could switch to manchester code, which can tolerate a 25% clock rate 
difference (between bits, not within a bit)
without incurring errors.

Really, there are only two commands of any use: (1) read an internal 
register, including EEPROM;
and (2) ability to CHANGE the value of a register, including EEPROM.

--Bob Axtell
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