[avr-chat] AT90USB1287 USART problem

[Ron Kreymborg]

Hi All

I cannot get the USART in a AT90USB1287 to respond to the RX interrupt. I
have read the '1287 data sheet several times now. I guess I am overlooking
something but I am darned if I know what. 

Attached are the source and make files for a simple app that demonstrates
the problem. It transmits the text to TeraTerm on a PC but typing anything
there never interrupts at the USART1 vector. The vector is there in the
interrupt table at 0x32 and points to the correct location. I can scope the
incoming characters right on the RX pin (PD2).
 
It is compiled with avr-gcc (WinAVR 20090313) 4.3.2 and loaded into a
AT90USB128716AU with a 14.7456MHz crystal on a STK501. The other numbers on
the '1287 are 0740-6G3879A.

Can anyone offer a suggestion?

Thanks
Ron

makefile
Description: Binary data

Main.c
Description: Text document