Printf on UART2

Kasper · Posted: Thu Jan 29, 2004 2:57 pm

Hi.
I am using a PIC6720 with 2 hardware uarts. My question is how do I send data on UART2, as it defaults to UART1 Sad

I looked through the manual and could not find any reference to how to deal with the two different uarts, other than for receiving, which I don't have a problem with.

thanks in advance

Kasper Smile

dyeatman · Joined: 06 Sep 2003 Posts: 1937 Location: Norman, OK

You need to use the Stream= parameter with USE_RS232 then designate the Stream name within the serial command (FGETC, PUTC, sprintf etc).

See the manual page 59 for more info on the Stream= parameter then search this site for the word Stream and you will find a lot of examples...I have included an abbreviated example below.

*************
#use rs232(baud=9600,xmit=PIN_C6,
rcv=PIN_C7,stream=PORT1,errors)

#use rs232(baud=4800,xmit=PIN_B1,
rcv=PIN_B0,stream=PORT2)

**********

if (kbhit(PORT1))
{
BUFFER_1[i1] = fgetc(PORT1);
i1++;
}
....

if (kbhit(PORT2))
{
BUFFER_2[i2] = fgetc(PORT2);
i2++;
}

Neutone · Joined: 08 Sep 2003 Posts: 839 Location: Houston

You should look throught the readme file. It has some information not available in the manual. Support for dual streams is newer than the manual and noted in the readme file.

Kasper · Posted: Thu Jan 29, 2004 4:35 pm

That works .. thanks alot Smile

curt2go · Joined: 21 Nov 2003 Posts: 200

Where is the readme file. I am havin gthe same problem.. Thanx,

curt2go · Joined: 21 Nov 2003 Posts: 200

Found it.. DUH!... TTY