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GPIO configurations

Posted: Wed Jun 13, 2018 10:58 pm
by nishajain
Hi,

I am new to SAMA5D3 programming and facing some issues while trying to change the GPIO configurations for a custom board.
My register settings are not changing/sticking so I also tried clearing WPEN bit as well but it causes to break into BootROM.

Please let me know if there is sample code to follow ?

Thanks
Nisha

Re: GPIO configurations

Posted: Thu Jun 14, 2018 2:30 am
by blue_z
nishajain wrote:I am new to SAMA5D3 programming
And what else?
Usually this turns out to mean that the person is not an experienced programmer in any discipline whatsoever.
That's not necessarily a bad thing, but if you insist on concealing it, then you're a phony.

nishajain wrote:... facing some issues while trying to change the GPIO configurations for a custom board.
How do you know that this "custom board" is fully functional?
What software environment are you using: baremetal, Linux, some RTOS?

nishajain wrote:it causes to break into BootROM.
What does this mean?
What is "BootROM"?
The processor/board was reset?

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Re: GPIO configurations

Posted: Fri Jul 06, 2018 11:16 pm
by nishajain
blue_z wrote:
nishajain wrote:I am new to SAMA5D3 programming
And what else?
Usually this turns out to mean that the person is not an experienced programmer in any discipline whatsoever.
That's not necessarily a bad thing, but if you insist on concealing it, then you're a phony.

[N]Was not sure you will provide your judgement on my knowledge based on opening sentence.
[N]But point noted will not be opening my question with above line.
nishajain wrote:... facing some issues while trying to change the GPIO configurations for a custom board.
How do you know that this "custom board" is fully functional?
What software environment are you using: baremetal, Linux, some RTOS?

[N]I believe question is for AT91Bootstrap community so it is bare metal. But sorry for confusion or wrong forum.

nishajain wrote:it causes to break into BootROM.
What does this mean?
What is "BootROM"?
The processor/board was reset?

[N]Yes above means the processor hangs very early on in (Read Only Memory) ROM (boot code).

[N]RESOLVED Above issue as the u-boot was overwriting the settings.
[N]Thanks for suggestion.



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