Software Toll for Reading and Setting ENBDM

Pegasus — Sat, 18 Nov 2006 01:10:22 GMT

I'm trying to put DEMO9S08QG8E (demo board for MS9S08QG8) into STOP 1 mode. But when exiting the STOP Mode I receive the message "exiting stop 3 mode". I suspect that ENBDM is set.

I'm connected to the board using USB. The baord include P&E USB-DBC controller.

I couldn't find how the read and set ENBDM (Actually BDSCR) using codeWarrier 5.0. Can someone help in explaining how to use CodeWarrier, or recommend a software tool for reading and setting BDSCR?

Pegasus

Re: Software Toll for Reading and Setting ENBDM

peg — Mon, 20 Nov 2006 05:36:12 GMT

Hi Pegasus,

I think you are correct, I think that when the BDM pod is connected it likes to set this bit so it can be in control. I don't think there is a way to directly control or read the BDSCR register from Codewarrior or P&E software.

There are dedicated BDM commands for this (READ_STATUS and WRITE_CONTROL).

But the software does it all for you automatically.

Gabriel Dubatti's BDMLoader can but it uses its own pod which is a problem for you with your built in pod.

You can drive BDMLoader from a terminal where you have full access to the raw commands.

I presume you are powering the board via the USB cable?

Have you tried to go to STOP1 after a power on reset without any software running? This way ENBDM should still be a 0 (unless the hardware does it on its own???)

Regards

David

Message Edited by peg on 2006-11-2007:41 AM

topic Re: Software Toll for Reading and Setting ENBDM in 8-bit Microcontrollers

Software Toll for Reading and Setting ENBDM

Re: Software Toll for Reading and Setting ENBDM