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Discussion Groups
Discussion Groups | Freescale DSPs | Codewarrior, DSP56F801 and HC908MR16
Technical discussions about Freescale (Motorola) DSPs (including the DSP56000, DSP56300, DSP56600, 56800 DSPs).
Using address pin as GPIO on 56F805 with PE - Bruno Tremblay - Apr 26 16:52:00 2005
Hello,
I’ve already done this when I was using the SDK but I can’t figure how to do it with Processor Expert. What I want to do is: while still using A0-A5 as address pin I want to use A6-A15 as there GPIO pin. I’ve try to set the external bus with an Ext16IO bean at 0x2000. Then, when I try to set the GPIOA, PE gives me an error.
If I can’t do it with PE, is there a work around?
Thanks
Bruno
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Re: Using address pin as GPIO on 56F805 with PE - Michael W. Mann - Apr 29 13:00:00 2005
--- In motoroladsp@moto..., "Bruno Tremblay" <btremblay@g...>
wrote:
> Hello,
>
> I've already done this when I was using the SDK but I
can't
> figure how to do it with Processor Expert. What I want to do is:
while still
> using A0-A5 as address pin I want to use A6-A15 as there GPIO pin.
I've try
> to set the external bus with an Ext16IO bean at 0x2000. Then, when
I try to
> set the GPIOA, PE gives me an error.
>
> If I can't do it with PE, is there a work around?
>
> Thanks
>
> Bruno
You can always use the macros in PE_Types.h and the #defines in
IO_Map.h to directly bang the bits required to setup the GPIO pins as
you desire.
(You need to be a member of motoroladsp -- send a blank email to motoroladsp-subscribe@yahoogroups.com )
wrote:
> Hello,
>
> I've already done this when I was using the SDK but I
can't
> figure how to do it with Processor Expert. What I want to do is:
while still
> using A0-A5 as address pin I want to use A6-A15 as there GPIO pin.
I've try
> to set the external bus with an Ext16IO bean at 0x2000. Then, when
I try to
> set the GPIOA, PE gives me an error.
>
> If I can't do it with PE, is there a work around?
>
> Thanks
>
> Bruno
You can always use the macros in PE_Types.h and the #defines in
IO_Map.h to directly bang the bits required to setup the GPIO pins as
you desire.
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Codewarrior, DSP56F801 and HC908MR16 - Mariano Filippa - Apr 29 18:00:00 2005
Slightly off topic.
I used to program the 56F80X family of DSPs with Codewarrior 5.0. Now, I am
implementing HC908s as a low cost replacement in low-end applications.
Questions:
1) Does anybody know any other Motorola/Yahoo group as good as this one? I
searched but got nothing.
2) Regarding Codewarrior environment, is it the same for HC908s as for
56F80x? I have found several similarities and want to apply all I know from
the 56800 into HC908s.
Thanks!
Mariano
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