On Fri, 30 May 2003, Joe Smith wrote:

> I am using the C2C C Complier and I am trying to learn how to use
> interrupts, specifically the usart receive interrupt. I am using some
> example code found on the C2C site to do this. I believe the Timer0 overflow
> interrupt is working correctly. My code for the usart receive interrupt does
> not seem to be working correctly, all I am trying to do is write the
> character that was received when the interrupt was triggered. Any ideas?

> #pragma RS232_RXPORT PORTB
> #pragma RS232_TXPORT PORTB
> #pragma RS232_RXPIN 1
> #pragma RS232_TXPIN 2
> #pragma RS232_BAUD 9600
> #pragma TRUE_RS232 1

I don't know what any of this does, but you shouldn't need it to use
the hardware UART.

>   set_bit(intcon, T0IE);
>   set_bit(rcsta, CREN);
>   set_bit(pie1, RCIE);
>   set_bit(intcon, PEIE);
>   enable_interrupt(GIE);

I don't see the serial port being enabled (SPEN = 1).

--
John W. Temples, III

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