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Re: [ts-7000] New to TS-7xxx ARM SBC, looking for basic RS232 loopback t

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Subject: Re: [ts-7000] New to TS-7xxx ARM SBC, looking for basic RS232 loopback test program. (TS-7500
From: Paul Breneman <>
Date: Thu, 10 Dec 2009 13:34:38 -0500
Jon L wrote:
> Current architecture:
> 
> TS-7500 mounted on the TS-752 development kit, 
> Talk to the TS-7500 through the TS-752 Console port using a hypertrm session 
> running from a Windows XP pro PC. 
> 
> 
> And its been 9 years since I programmed in a unix environment too :-/ (and at 
> that not programming at the hardware level) 
> so please be kind. 
> 
> The skinny is, 
> 
> I want to make a simple loopback test, send out, say 5 characters, on one 
> port, and every time the second port receives the 5 characters it sends back 
> a message "got 5 chars".  If the receiving process gets the first char, but 
> within say 3 seconds doesn't get the 5th, it sends the string "got less than 
> 5 chars". 
> 
> 
> Here's what I've got so far:
> 
> I wrote a bunch of Uart handlers software for a Rabbit Processor and they all 
> work fine, but my boss wants it to run on the busybox linux processor on the 
> TS-7500 board.  So I got me a TS-7500 that has the busybox linux on the flash 
> memory for fast boot, and the full debian linux on the removable card for a 
> development suite. I got my hello world program working just fine (writing to 
> stdio), and it even runs fine on the busybox linux (you must compile with the 
> --static option!!!) 
> 
> I've got my TS-7500 mounted on the development kit TS-752 that has broken out 
> all sorts of the pins as described here: 
> 
> http://www.embeddedarm.com/about/resource.php?item=414  (section "3.1") 
> 
> meantime along with confusion about the pinouts (looks like there are typos 
> describing pins 28 and 29 for example) 
> 
> I'm lost on how to begin.  Can anybody point me in the right direction to 
> programming the UART's in this TS-7xxx environment? Even if its for one of 
> the other boards, I'm sure it should be not too difficult to convert it. 

I have some simple serial programs available that work on my TS-7390. 
You can get the files here:
   http://www.turbocontrol.com/simpleserial.htm

There are two programs and you can either run them both on your TS-7500 
or run either program on a Windows or Linux i386 PC.

My examples do not compile EABI programs at this time.  If the OS on 
your TS-7500 runs OABI programs (like the TS-7390) then they should work.

If you want to try this get the file for ARM Linux and put the files on 
your TS-7500 and try to run the compiler (ppcarm).  If the compiler runs 
then your OS is probably OK.

Let me know if I can help further.


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