Most LED's will need a reasonable amount of current to turn on - and
GPIO's are generally not capable of driving them directly.
Try putting a DVM or scope probe on the pin to check it's state.
Steve
kaja gopi wrote:
>
> Hi,
>
>
>
> I tried to toggle the bit on 6 GPIO ports given on DM355 EVM board.
>
> I tried using mmap and the base address given was 0x01C67000.
>
> I tried to toggle GPIO64 pin.
>
> DIR45 offset is 60h.
>
> OUT_DATA45 is 64h.
>
> I have made DIR45 = 0x00; configuring all the ports in bank 4 and 5 to
> output ports.
>
> and then OUT_DATA45=0x01 making 0th bit high which is GPIO64.
>
> I also tried SET_DATA45 =0x01;
>
> I have kept an LED ont that port and tried but it was not working.
>
> Any body help me please.
>
>
>
> thanks
>
> regds
>
> Gopi K
>
>
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