# Problem demo downloading to controller

**URL:** <https://forums.freertos.org/t/problem-demo-downloading-to-controller/4920>\
**Category:** Kernel\
**Created:** [December 10, 2008, 12:46am UTC](https://forums.freertos.org/t/problem-demo-downloading-to-controller/4920 "2008-12-10T00:46:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [December 10, 2008, 12:46am UTC](https://forums.freertos.org/t/problem-demo-downloading-to-controller/4920/1 "2008-12-10T00:46:54Z")

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**[mikaelo](https://sourceforge.net/u/mikaelo/)** wrote on [Wednesday, December 10, 2008](https://sourceforge.net/p/freertos/discussion/382005/thread/d769bbf2/#cdd7):

Hi,

I’m using an Olimex SAM7-EX256 and I’m trying the CrossWorks demo&nbsp; (using version 1.7) and though it lists a demo for AT91SAM7X256 on the list of demos, the closest I actually find in the zipfile is for a at91sam7s256.

Not sure if it’s compatible, but it compiles fine, but fails to verify on download.

Any suggestions as I would like to use it as a starting point to learn the IwIP stack and want to make sure I have a working starting point.

Thanks in advance  
Mikael

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [December 10, 2008, 6:53am UTC](https://forums.freertos.org/t/problem-demo-downloading-to-controller/4920/2 "2008-12-10T06:53:46Z")

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**[davedoors](https://sourceforge.net/u/davedoors/)** wrote on [Wednesday, December 10, 2008](https://sourceforge.net/p/freertos/discussion/382005/thread/d769bbf2/#cdd7/9268):

According to [http://www.freertos.org/portsam7xlwIP.html](http://www.freertos.org/portsam7xlwIP.html) it is in the FreeRTOS\Demo\lwIP\_Demo\_Rowley\_ARM7 folder.

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [December 10, 2008, 4:21pm UTC](https://forums.freertos.org/t/problem-demo-downloading-to-controller/4920/3 "2008-12-10T16:21:57Z")

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**[mikaelo](https://sourceforge.net/u/mikaelo/)** wrote on [Wednesday, December 10, 2008](https://sourceforge.net/p/freertos/discussion/382005/thread/d769bbf2/#cdd7/cba7):

The current demo project is not compatible with ftdi based JTAGs( Such as the Olimex JTAG Tiny i use).  
In the CrossWorks 1.7 release which added support for them, they ship a new re-worked target script with improved timing for those JTAG types.

Once I replaced the script with the one shipped with the current version if crossworks, download and verify works great.