8-bit Microcontrollers中的主题 Re: MC9S08GT60 BDM

MC9S08GT60 BDM

itsikb — Sun, 21 May 2006 20:37:36 GMT

HI, I'm using the S08GT60 with Codewarrier via BDM.

With the BDM the software is running perfect.

I'm having problems running the MCU as stand alone with the BDM plug disconnected. The applivation is running but with many problems.

Any directions? It is very difficult to monitor the problems without the BDM so I'm in the "dark".

Thanks

Itsik

Re: MC9S08GT60 BDM

peg — Mon, 22 May 2006 05:51:29 GMT

Hi Itsik,

Firstly, I would be checking for something that changes when you disconnect the BDM programmer. Maybe you have a power supply filtering issue or reset pullup or something that is assisted by the BDM connection???

Of course, trying a very small test programme that just flashes a LED or something will help decide whether the problem is hardware or software.

If its software related you may have to fall back to the old tried and true methods of things like flashing LED's at certain points in the programme to work out where you are. And cutting code sections out to narrow the problem area down.

Regards David

Message Edited by peg on 05-22-200601:59 PM

Re: MC9S08GT60 BDM

J2MEJediMaster — Mon, 22 May 2006 20:29:41 GMT

It might be that the BDM is initializing certain things in the processor that your application isn't. Go over your initialization code carefully to see that you setting up all of the resources (especially memory) properly.

Per peg's suggestion, the quickest way to isolate this problem as being rooted in the hardware or software is to download a simple demo program know to work and see if that executes properly with the BDM removed. If the demo runs fine without the BDM, then your program's initialization code is suspect.

---Tom

Re: MC9S08GT60 BDM

CompilerGuru — Tue, 23 May 2006 20:42:13 GMT

Could this be a COP issue?

Daniel

Re: MC9S08GT60 BDM

peg — Wed, 24 May 2006 05:11:52 GMT

CompilerGuru wrote:
Could this be a COP issue?

Daniel

Could be, but presumably the BDM is connected to say, hiwave and it would tell him so.

Regards David