I'm talking about running the following commands that come with the ts-7260:
dio_dir_get <n>: get the current direction (0=input,1=output) of DIO #n (n in
0..15)
dio_dir_set <n> <dir>: set the direction of DIO #n to the specified direction
(0=input,1=output)
dio_data_get <n>: get the current value (0=Low,1=High) of DIO #n
dio_data_set <n> <val>: set the current value
have any of you used these scripts/commands sucessfully out of the box? I need
to know if they work before purcashing the ts-7260, because i purchased a
ts-4200/ts-8100 and the scripts on the board do not work.
Claudio
--- In "Clark" <> wrote:
>
> Answer: This code does work on my system.
>
> --- In "Clark" <cdunson@> wrote:
> >
> > Let's see if we can't focus this discussion a little better. Is this the
> > same deal I face attempting to access GPIO? Joel said I need to use a
> > read-modify-write instruction, yet the TS sample code 'button.c' shows the
> > naive approach of using simple assignment in C. Thus the question to me is
> > does this sample code work? Why not?
> >
> > / filename button.c
> > // connect a button to DIO pin 1 and ground
> > // blinks green and red led on the ts-7200 when button is pressed
> > //
> > // compile arm-linux-gcc -o button button.c
> > //
> >
> > #include<unistd.h>
> > #include<sys/types.h>
> > #include<sys/mman.h>
> > #include<stdio.h>
> > #include<fcntl.h>
> > #include<string.h>
> >
> > int main(int argc, char **argv)
> > {
> > volatile unsigned int *PEDR, *PEDDR, *PBDR, *PBDDR, *GPIOBDB;
> > int i;
> > unsigned char state;
> > unsigned char *start;
> > int fd = open("/dev/mem", O_RDWR|O_SYNC);
> >
> > start = mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, fd,
> > 0x80840000);
> > PBDR = (unsigned int *)(start + 0x04); // port b
> > PBDDR = (unsigned int *)(start + 0x14); // port b direction register
> > PEDR = (unsigned int *)(start + 0x20); // port e data
> > PEDDR = (unsigned int *)(start + 0x24); // port e direction register
> > GPIOBDB = (unsigned int *)(start + 0xC4); // debounce on port b
> >
> > *PBDDR = 0xf0; // upper nibble output, lower
> > nibble input
> > *PEDDR = 0xff; // all output (just 2 bits)
> > *GPIOBDB = 0x01; // enable debounce on bit 0
> >
> > state = *PBDR; // read initial state
> > while (state & 0x01) { // wait until button goes low
> > state = *PBDR; // remember bit 0 is pulled
> > up with 4.7k ohm
> > }
> >
> >
> > // blink 5 times, sleep 1 second so it's visible
> > for (i = 0; i < 5; i++) {
> > *PEDR = 0xff;
> > sleep(1);
> > *PEDR = 0x00;
> > sleep(1);
> > }
> > close(fd);
> > return 0;
> > }
> >
> >
> > --- In dalibor@ wrote:
> > >
> > > > can someone confirm the DIO pins work on the ts-7260 using the provided
> > > > scripts ?
> > > >
> > > >
> > >
> > > Hello,
> > > probably the same problem,
> > >
> > > I am not able to control DIO pins from user space. Tried C code via
> > > registers, peekpoke, GPIO kernel modules, but nothing worked. The pins are
> > > still high (log 1). LED connected to the pin is still lighting.
> > >
> > > The only thing I managed is to read the pins, when I connect it to ground,
> > > I can read log 0, log 1 when disconnected.
> > >
> > > Thanks in advance for any tips..
> > >
> > > Dalibor
> > >
> >
>
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