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);
}
}
__._,_.___
![]()
SPONSORED LINKS
__,_._,___
|