[ts-7000] Re: Problem with DIO1 on TS7300

["Alvaro Aguirre" <>]

I solved it... I'm not so sure what's the difference but I paste the code if anyone in the future has the same problem. I get the answer on http://www.simtec.co.uk/appnotes/AN0014/
   .

#include <sys/mman.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>

void button_init(void){
    void *PBDR, *PFDR, *PBDDR, *PFDDR;
    void *start;
  int fd;
    
    //Abrimos el dev/mem
    fd=open("/dev/mem", O_RDWR | O_SYNC);

    //Obtenemos el puntero a la memoria    
    start=mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0x80840000);
    
    //Asignamos los punteros a los registros necesarios
    PBDR=        (start + 0x04);     // port b;
    PBDDR=    (start + 0x14);     // port b ddr;
    PFDR=        (start + 0x30);     // port f;
    PFDDR=    (start + 0x34);     // port f ddr;
    
    //seteamos los ddr y debouncing
    *(volatile unsigned char *)PBDDR &= 0x04;
    *(volatile unsigned char *)PFDDR &= 0xfd;
    
    while(1){
        printf("%x,%x\n",*(volatile unsigned char *)PBDR,*(volatile unsigned char *)PFDR);
        usleep(100000);
    }
}

On 11/14/06, Alvaro Aguirre <> wrote:

I check the memory and when i put a signal on the pin5 i get it mapped on 0x20 (bit 1) which is Port E bit 1!?
Please help me!

On 11/14/06, Alvaro Aguirre <> wrote:

I wrote a very simple function to get readings from the pin 1,3,5,7,9 and 11 from DIO1 on my TS7300 but the results are confusing.
The value of *PFDR changes when pin 1,3,7,9 and 11 are grounded and *PBDR doesn't change at all.
Reading the TS7300 manual *PBDR must change when signals come from pin 1,3,7,9 and 11 and *PFDR on pin 5. What i'm doing wrong? i'm using a kernel builded by my self (with a fix only on the framebuffer)... please help!

#include <sys/mman.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>

void button_init(void){
    volatile unsigned int *PBDR, *PFDR;
    volatile unsigned int *PBDDR, *PFDDR, *GPIOBDB, *GPIOFDB;
    int *offset;
  int fd;
  
    //Abrimos el dev/mem
    fd=open("/dev/mem", O_RDWR | O_SYNC);

    //Obtenemos el puntero a la memoria    
    offset=mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0x80840000);
    
    //Asignamos los punteros a los registros necesarios
    PBDR=        (unsigned int *)(offset + 0x04);     // port b;
    PBDDR=    (unsigned int *)(offset + 0x14);     // port b ddr;
    PFDR=        (unsigned int *)(offset + 0x30);     // port f;
    PFDDR=    (unsigned int *)(offset + 0x34);     // port f ddr;
    GPIOBDB=(unsigned int *)(offset + 0xc4);     // port b debouncing;
    GPIOFDB=(unsigned int *)(offset + 0x64);     // port f debouncing;
    
    //seteamos los ddr y debouncing
    *PBDDR &= 0x04;        //Todos entradas menos el DIO_2
    *PFDDR &= 0xfd;        //Solo entrada el DIO_8
    *GPIOBDB |= 0xfb;    //debounce en todos los bits menos DIO_2
    *GPIOFDB |= 0x02;    //debounce en el DIO_8
    
    while(1){
        printf("%x,%x\n",*PBDR,*PFDR);
        usleep(100000);
    }
}

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