Hello, I am having trouble with my PIC18F4550's USART module:

Transmitting is fine, works perfectly

However I can not get my code to receive properly.

I used the following code:

while (!PIR1bits.RCIF) {} 

return RCREG;

But it doesn't work properly.

It waits until the first byte is received, and using an if() statement I
can check the byte is valid,

But after this it just skips through the routine, returning the same
byte value.

c = getch();

LED1 = (c == 'A');

I have tried many different configurations and code, but it still does
the same thing.

I have heard that RCREG is a 3-deep buffer and reading RCREG 3 times is
enough to clear it, but this does not seem to work

Please help me, I am getting really frustrated over this (should be)
simple code

 

Thanks, Jared.

 

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist