TBDML w/ JB16 and CW 5.1

[admin]

I am having difficulty odifying the code for the TBDML w/JB16 (HC908JB16).  It appears that the original code was created using CW3.1 and I am using CW5.1.  If I simply recompile the code a key feature no longer works. 

A key feature of the TBDML design is the ability to place the device in ICP mode and reprogram the part through the USB connection with out using Vtst.  If I recompile the code using CW5.1, the recompiled code programs in to the device, and the BDM appears to function normally.  However, the part will not enter ICP mode to allow reprogramming over the USB connection. 

Tech note TN241 says HC08 CW3.1 projects will compile and run on CW5.1 "without any problems".  I am at a loss to explain the difficulty I am having.

Any help or suggestions will be greatly appreciated.

Thanks

Spencer

[Witztronics · Accepted solution]

Attached is the app note which will show you how to program the JB16 via USB.

You will need to download the USBICP program from the Freescale web site.

For the TBDML, you need to pull up the PTA0 pin before plugging it into the USB port.  this will force the firmware into ICP mode.

We've made our own version of the TBDML, if you are interested:

http://witztronics.com/product_info.php?cPath=2_24&products_id=42

Witztronics

www.witztronics.com

AN2399.pdf

Message Edited by t.dowe on 2009-09-16 10:38 AM