[ts-7000] Re: TS-7400 DIO

["Yan Seiner" <>]

--- In  Rodrigo Gómez <> wrote:
>
> Hello everybody
>
> Have some of you accessed at DIOs 16 and 17 in the 7400?
>
> I tried to acces to memory map, but the program returned "segmentation
> fault"
> I just tried the address in the manual:
> "0x1200_0001: GPIO direction/data for DIO_16 to DIO_19
>   bit 3:0 - data register
>   bit 7:4 - data direction register ('1' means 'output')"
>
> My code is:
> #include <sys/mman.h>
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <unistd.h>
>
> int main(int argc, char *argv[])
> {
>   int fd = open("/dev/mem", O_RDWR|O_SYNC);
>   int ledPrender;
>   unsigned char *control;
> control = (char *)mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd,
> 0x12000001);

This doesn't look page aligned... 0x12000000 maybe?

> control[0] = 0xF0;
> control[0] = 1;
> }
> I'm runnig with root permisions over debian running in a USB memory
> Any help would be great!
> Thanks
> rgo
>





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