ICD Advance Debugging.

dgb · Joined: 24 May 2004 Posts: 5 Location: Madrid, (SPAIN)

I have trying to use the "advance debugging" with the ICD-40U in order to obtain messages from my PIC at the 'monitor' window when debugging the project.
I have routed the pin_b3 to the pin #1 of the RJ12 and I have also included this line in my project:

#use rs232 (baud=9600, xmit=PIN_B3, stream=DEBUG)

(I have no any other serial port defined but this).

I try to transmit to the 'monitor' window with this instructions:

fprintf(DEBUG, "\nminutes= %lu", Minutes);

Nevertheless there is no information dumped to my monitor :-(.

Can anybody tell me what is wrong??

Thanks!

treitmey · Joined: 23 Jan 2004 Posts: 1094 Location: Appleton,WI USA

Try this

dgb · Joined: 24 May 2004 Posts: 5 Location: Madrid, (SPAIN)

Thanks treitmey, two things:
1. I have found a mistake at the cabling of the prototype-->after fixing this I have stuff sent by the PIC on my monitor (great!!). The downside is that it has no sense what it is shown on it.
2. I have tried your settings, but without changing my port pin (I keep on the RB3 for XMIT). No results at all. I have tried all the combinations between baud rate, invert/no-invert and parities. Making all the possible combinations from 300 bauds to 38400 I have similar rubish on my monitor.

Have any idea?

Thanks.

treitmey · Joined: 23 Jan 2004 Posts: 1094 Location: Appleton,WI USA

Sorry, I havn't been on for a couple of days. It sounds like you have a wireing problem. Find a pin that is the most isolated. ( no special functions((pullup resister)) and no other wireing to other devices/chips. Then run 1k resister from pin to pin 2 of DB-9 serial cable. Then use this code as a check.

treitmey · Joined: 23 Jan 2004 Posts: 1094 Location: Appleton,WI USA

also note that in the above code I should have an "INVERT" in the rs232 line.

You see when this code was written it used the hardware UART, not a software one like we are trying to use.

This hardware USART then when into a MAX232 chip. This is a level tranlater. That is why it didn't need a INVERT

dgb · Joined: 24 May 2004 Posts: 5 Location: Madrid, (SPAIN)

Hmmm, I don't think this is a cabling problem. I have changed the xmit pin for two times, even one of them was the xmit line of the internal UART peripheral. But in all the cases the result was the same: the monitor window was plenty of characters that had nothing to do with the real fprintf's. I have to remark that this advance debugging is made through the ICD-40U, so no DB9 connector is being used, nor SIOW program or other hyperterminal, but the "Monitor Window" of the ICD-DEBUG-TOOL_SET.
I have notice that there is no differences on the data seen on the "Monitor window" when I declare "STREAM=DEBUG", to the case that this directive doesn't appear in my code. It seems as if the compiler wouldn't take it into account... Does this make a tip for you??

dgb · Joined: 24 May 2004 Posts: 5 Location: Madrid, (SPAIN)

I got it!
I wrote the next: