UART related problem

Altera_Forum · ‎09-01-2005

hello everyone

I am new to using NIOSII processor. I am trying out a simple program as a beginning to my project. I am using UP3 board and am trying to send and receive data through UART port. From the other side i am checking the result through hyperterminal of another PC. I am not able to receive or transmit any data. This might be a problem of pins i have assigned to the UART rx and tx. I have assigned them pins 42 and 47. Is that correct ??

plz help me out.

thnx

sourabh

Altera_Forum · ‎09-01-2005

Hi sourabh,

> i have assigned to the UART rx and tx. I have assigned them pins 42 and 47. Is that correct ??

This is correct for the UP3 Rev. 2 (1C6).

> i am checking the result through hyperterminal

For your initial testing, make sure flow-control is disabled and check your cable. On the UP3, the

DB-9 connector is wired as DCE (e.g. RXD on pin2 and TXD on pin3, etc). Your PC RS-232 port is

also DCE ... so you'll need a NULL modem.

Regards,

--Scott

Altera_Forum · ‎09-09-2005

what do u mean by NULL Modem??