[ts-7000] Re: need help reading GPIOs or DIOs pins logic level

["pekalo1" <>]

--- In  "yanniepa" <> wrote:
>
> Hello,
> 
> I would like to be able to change the logic level of a few IOs by
> either writing to GPIOs pins or reading their state level.
> 
> I used this sample code :
> 
> int fd = open("/dev/mem", O_RDWR|O_SYNC);
> char *gpioregs;
> gpioregs = (char *)mmap(o,4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd,
> 0x12c00000);
> gpioregs[0] = 0xff;
> gpioregs[2] = 0x12; //1 on DIO_1 and DIO_4 and zero on others
> 
> could someone help me with that ? I tried this and I see no changes on
> the outputs levels on DIO_1 and DIO_4.
> 
> I hope someone can help.
> Thanks
> 
> Yan~
>


Hi man 
      try to use this code it is for DIO1 i use it and it is good 

  volatile unsigned int  *PBDR, *PBDDR;
  int fd = open("/dev/mem", O_RDWR|O_SYNC);
  GPIO1 = mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, fd,
       0x80840000);
   PBDR  = (unsigned int *)(GPIO1 + 0x04);     // port b data
   PBDDR = (unsigned int *)(GPIO1 + 0x14);    // port b direction reg
   *PBDDR = 0x00; // set port b 0xff > output , 0x00 > input.
   
   then u can read or write to the Data Regester 
   *PBDR..
 
  Hope to help u with this 
  
  Best Regards
   khaled.     





 




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