I can NOT get this example to work? I have been using the MCB2140 for several weeks, no problem there. I can open the HID project in uVision3, compile it, download it, run it, step thru it. Then I remove the USB cable , wait 10 seconds (yes, I read and followed the instructions), plug the USB cable back in and my PC (running XP) says "USB Device Not Recogonized" When I go into the device properties, the Device status is: " No drivers are installed for this device." Has anybody else had this problem? Am I missing something obvious? I did not modify the HID code at all, should I? If anyone can pass along ANY kind of hint, tip or otherwise useful information, I would really appreciate it. Thanks, Dave
Thanks for the reply. There has been some trouble reported with the mass storage example, but not the HID example. My main PC as I stated in my initial post is running Windows XP. I have also verified the same behavior on a different PC running 2000. This is my first attempt at using USB, so I was really hoping to get up to speed using the MCB2140 and this HID example. I'm really not sure where to start here. I guess I need to start probing the lines and looking at what actual data is being sent back and forth? Thanks, Dave
We never had problems with the HID example: - MCB2140 Jumpers (VR, DP-, DP+: On) - use the prebuilded object file - download the example to Flash - remove USB cable & JTAG Interface - reconnect the USB (after 10s) Maybe you should also download the latest version 2.40 from http://www.keil.com (just to make sure that you have up-to-date software). Reinhard
Dave; This does not address your question directly but it will help you complete your project. As Dan Henry has pointed out is the forum, http://www.usbee.com has an excellent tool for debugging serial/usb comm of this type. A scope is great but in your project you will need to record a data stream over several seconds. I have this tool at one of my customers. It has saved many hours of head scratching. Good tools don't cost, they save. No. I do not sale any tools. Bradfrod
Al, Thanks for the suggestion, I can't believe I've never been to this site before. It looks like really good stuff. I will be reading frantically today. Thanks, Dave
Hello, I have triple checked all the jumpers. I have downloaded the latest compiler and recieved a new Liscense ID code. The CA compiler is V2.32a. I downloaded the zip file again and tried sending the precompiled object file. Same result??? Ok I just tried it one more time with the JTAG(ULINK) removed and uVision closed. IT WORKS!!!!!!!!!!!!!!!!!!!!!!!!!!!! Thanks for everyones help and patience. Now I guess I have to get some real work done, no excuses. Thanks Again, Dave B.