STK500, ALTERA DE2 communication


We have a STK500 Board with the ATmega16 chip and a altera DE2 with the cyclone || EP2C35F672C6N chip.

we are struggling with the communication between the two, it looks like the sampling are a few bits shifted to the left.

we are using RS-232 communication between the boards and have a baud rate at 9600 on both boards. we have a clock frequency at 3,68MHz.

USCRA = 0x00;

USRB |= (1<<TXEN);

UBRRH = 0x00;

UBRRL = 0x17;

The RS232 block in ALTERA DE2 is 50MHz and we wait 1.5 bit time between the sampling.

Have somebody any advice? :slight_smile: :slight_smile: :slight_smile: :slight_smile: :slight_smile: :slight_smile: :slight_smile: :confused: :confused: :confused: