serial port hangs on 16f876

[ljb]

I'm using the serial h/w port on 16f876.
The port hangs if char are rx'ed to fast. (seems about 3 or 4 char, so I'm wondering if it is something to do with the buffer).The rest of the s/w is still running.
Can anyone tell me what is happening and better still how to over come it.
Many thanks
Les

[Birdie]

I had a similar problem with PIC18F6720 and the following helped prevent lock-ups:

//Check for receive buffer overrun error and clear if error.
if(bit_test(*RCSTA1, OERR))
{
bit_clear(*RCSTA1, CREN);
bit_set(*RCSTA1, CREN);
}

Hope this leads to a solution.

[lucky]

If the 3 Byte H/W buffer is over run then the RS232 will hang until the error is cleared.

You can include the ERRORS option in your #use_rs232 statement to automaticly clear these errors as they occour. It will also copy the errors into a variable that you can then read.
_________________
Lucky
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