UART Blackfin

Hi all
Does any one has a sample code of a file transfer from the EZKIT board to a PC
through RS232 via UART.
Thanks
Regards
Sriram

sriram wrote:
> Hi all
> Does any one has a sample code of a file transfer from the EZKIT board to
> a PC through RS232 via UART.

What was wrong with the replies you had to the other thread(s)?

It was suggested that you may find more luck in another group, have you
tried posting there?

Have you even attempted this task yet?  What code have you written for the
BF533?  I suspect that you haven't set up the correct registers... you may
need to set up specific ones for the timers as well as the uart.

Nobody here is going to do this for you, but we might be able to help.  If
we are to help, you really need to tell us what you have tried and EXACTLY
what you want to achieve and where it's going wrong.  So far you have not
demonstrated the slightest understanding of the problem in hand.

Ben
-- 
I'm not just a number. To many, I'm known as a String...

Hi 
Sorry about that..actually i wrote a code but i m not sure about
this...i m not sure whether i have set all the registers that  are
required...

#include<stdio.h>
#include <cdefbf533.h>

void main(void)
{
	
	FILE *fptr;
	fptr=fopen("test.txt","wr");
	
	

      	*pDMA7_PERIPHERAL_MAP=0x7000;
       	*pUART_GCTL=0x1;
        *pUART_LCR=0x0000;
        *pUART_IER=0x0003;
        *pDMA7_CONFIG=0x1000;
        *pDMA7_START_ADDR=fptr;
        *pDMA7_X_COUNT=10;
        *pDMA7_X_MODIFY=0x1;
        *pUART_LCR=0x0080;
        *pUART_DLL=0x001D;
        *pUART_DLH=0x0000;
        *pUART_LCR=0x0003;
        *pDMA7_CONFIG=0x1001;
              	   	       	   	

	}
My task is that i have DMA a file(having some data)to an another PC
through RS232 via UART through EZboard....i m not sure abou the serial
programming....
Thanks
Sriram

"Ben Pope" <ben@benpope.fsnet.co.uk> wrote in message news:<bl1qmt$u2e$1@newsg2.svr.pol.co.uk>...
> sriram wrote:
> > Hi all
> > Does any one has a sample code of a file transfer from the EZKIT board to
> > a PC through RS232 via UART.
> 
> What was wrong with the replies you had to the other thread(s)?
> 
> It was suggested that you may find more luck in another group, have you
> tried posting there?
> 
> Have you even attempted this task yet?  What code have you written for the
> BF533?  I suspect that you haven't set up the correct registers... you may
> need to set up specific ones for the timers as well as the uart.
> 
> Nobody here is going to do this for you, but we might be able to help.  If
> we are to help, you really need to tell us what you have tried and EXACTLY
> what you want to achieve and where it's going wrong.  So far you have not
> demonstrated the slightest understanding of the problem in hand.
> 
> Ben

sriram wrote:
> Hi
> Sorry about that..actually i wrote a code but i m not sure about
> this...i m not sure whether i have set all the registers that  are
> required...
>
> #include<stdio.h>
> #include <cdefbf533.h>
>
> void main(void)
> {
>
> FILE *fptr;
> fptr=fopen("test.txt","wr");
>
>
>
>       *pDMA7_PERIPHERAL_MAP=0x7000;
>        *pUART_GCTL=0x1;
>         *pUART_LCR=0x0000;
>         *pUART_IER=0x0003;
>         *pDMA7_CONFIG=0x1000;
>         *pDMA7_START_ADDR=fptr;
>         *pDMA7_X_COUNT=10;
>         *pDMA7_X_MODIFY=0x1;
>         *pUART_LCR=0x0080;
>         *pUART_DLL=0x001D;
>         *pUART_DLH=0x0000;
>         *pUART_LCR=0x0003;
>         *pDMA7_CONFIG=0x1001;
>
>
> }
> My task is that i have DMA a file(having some data)to an another PC
> through RS232 via UART through EZboard....i m not sure abou the serial
> programming....
> Thanks
> Sriram

Does your implementation allow "wr" as an argument?  It's usually 'r' for
read, 'w' for write.

As to the specific registers... I wouldn't know.  Do you need a link a timer
in there and configure that or does the UART have it's own timer?  Have you
configured that for the correct baud rate?

I would start off simple too... try dumping a single byte at the UART and
seeing if hyperterminal displays it.  All this DMA business to start with is
going to make it tricky... strip it down to the bare essentials and get the
basics working.

Ben
-- 
I'm not just a number. To many, I'm known as a String...

sriram2480@yahoo.com (sriram) wrote in 
news:d7967dc1.0309261349.49bf9d1c@posting.google.com:

> Sorry about that..actually i wrote a code but i m not sure about
> this...i m not sure whether i have set all the registers that  are
> required...

Also look at the chip anomaly list for the BF variant you're using. In 
particular, there's an issue with IMASK having the wrong polarity in early 
chip revisions.

For lurkers, the BF UART's are supposed to be register-compatible with PC 
UART's.

I'd also suggest looking at the recent uClinux port from Metrowerks. Read 
through the console driver for the "frio" chip (another name for the BF).

-- 
Kenneth Porter
http://www.sewingwitch.com/ken/