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View Full Version : wiping the memory on the Basic Stamp 2



severnclay
04-11-2007, 09:42 PM
I'm having a problem with a BASIC Stamp Homework Board: I loaded code on the board which seems to be stuck in a permanent loop, and now the board won't communicate through the USB port. Is there a way to wipe the memory on the chips? Has anybody run into this issue before?

Thanks,
Severn Clay

Mike Green
04-11-2007, 09:51 PM
If the USB port and the Stamp Editor are working properly, the Editor will force a reset of the Stamp to download a new program or even to identify the chip. Because of this, it's impossible for the Homework Board to be "stuck in a permanent loop". More likely, there is some problem with either the USB to serial adapter you're using or the installation of the Stamp Editor or the I/O drivers for the USB to serial adapter.

Theoretically, parts on the Homework Board can break, but they're pretty robust and hard to destroy. Do you know someone else with a Homework Board that will let you try yours with their USB to serial adapter and their installed Stamp Editor?

Chris Savage
04-11-2007, 09:57 PM
Hello,

Even though it seems like this is your problem (being caught in a loop), I assure you it is not…When you try to download a program to the BASIC Stamp Module the Editor resets the Module using the DTR line. This effectively stops the running program. It may be this pulse is not being received properly. Have you tried a fresh battery? Is any circuitry connected to the Stamp Module? If so disconnect it. Are you running on a laptop? If so, please see the troubleshooting FAQ at the bottom of our USB Driver download page at the following link. Take care.

http://www.parallax.com/html_pages/downloads/software/ftdi_drivers.asp

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Chris Savage
Parallax Tech Support