[ts-7000] Re: Read GPIO - Leer GPIO

["frankvd99" <>]

Hi Andrés,

I had a similar problem last week. Check out the discussion in this
forum about "TS7500 DIO control".
There are higher level routines available as you can see in the example
below. They are defined in /initrd/ts7500.subr. Maybe for the TS7400 you
need to adapt the names.

I'm running this from a shell script. Make sure you run this as root or
do the setuid trick as explained in the answers to my forum question.

#!/bin/sh
. /initrd/ts7500.subr
#
echo "IO value of pin 5:"
getdiopin 5
#

Regards,
Frank


--- In  "volrok" <> wrote:
>
> ----------in English-----------
> I am trying read, the pin 5 (GPIO) in the TS-7400, in this moment, i
have this code:
>
> int main(){
> /* PRIMERO ABRO EL PING */
> int fd=open("/dev/mem",O_RDWR|O_SYNC);
> if(fd<0){
> printf("No se pudo abrir la memoria \n");
>         }
> else{
> printf("Registro de memoria abierto - fd = %fd \n",fd);
>     }
>
> This code , open the memory.
> My question is, ¿how i finish the code, for read GPIO pin?
>
> Thanks
>
> I sorry for my language, I am live Chile.
>
> Regards
>
> Andrés
>
>
> -----En español----
>
> Bueno, lo que quiero es leer el ping 5 (GPIO) de la placa TS7400.
> Hasta ahora tengo este codigo, que abre la memoria, segun entiendo.El
cual funciona correctamente.
>
> int main(){
> /* PRIMERO ABRO EL PING */
> int fd=open("/dev/mem",O_RDWR|O_SYNC);
> if(fd<0){
> printf("No se pudo abrir la memoria \n");
>         }
> else{
> printf("Registro de memoria abierto - fd = %fd \n",fd);
>     }
> }
>
> ahora lo que tengo que agregar el codigo es como leer un pin GPIO
> creo que la respuesta va por un codigo similar a esto:
> mmap(NULL, 0x10000, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
0x49050000);
> pero no entiendo bien como hacerlo.
>
> Gracias de antemano
>
> Saludos
>
> Andrés
>




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