topic IO_LED question in 8-bit Microcontrollers

IO_LED question

seventh_ice — Fri, 01 Aug 2008 08:19:29 GMT

i start learn codewarrior since 4 days ago. and still don't understand much about codewarrior.
after compile my project i try to simulate and debug it. I can see port B logic change when i debug it (from 'data' component). But I can't see IO_LED flash, looks like IO_LED not connected to portB, even i allready setup IO_LED for portB. No respons from IO_LED even i write data to port B.
Please give me explanation about that

Regards,

Gunawan

Re: IO_LED question

Zahar — Fri, 08 Aug 2008 03:17:32 GMT

Gunawan,

Did you make sure to configure your port as an output by writing 0xFF to the corresponding data direction register?

Best Regards,
Zahar
P&E

Re: IO_LED question

CrasyCat — Fri, 08 Aug 2008 15:21:48 GMT

Hello

IO_LED Component will not work When you debug on real hardware or on HC(S)08 Full chip simulator.

In order to be able to display state of some bits in PORT B in a visual way, I would recommend you to use the Visualization tool component and Add a LED Instrument there.

CrasyCat

Re: IO_LED question

fabio — Fri, 08 Aug 2008 20:45:50 GMT

Hi Seventh_ice,

May I recommend a nice book ?

HCS08 Unleashed: Designer's Guide to the HCS08 Microcontrollers

The book has a nice tutorial on the Codewarrior tool as well as the HCS08 Microcontrollers.

Best regards,