[ts-7000] Re: Control The I/O of TS-7300

["ts7300" <>]

Have doubt in manual mention make bit0 as output for portC.For LED ON
 *PCDR &= 0xFF; and For LED OFF  *PCDR &= 0x00; These data value I have to 
Give. 
--- In  "ts7300" <> wrote:
>
> I am using TS-7300 and want to control the I/0 of board via connecting LED to 
> I/O Board.And using DIO1 PIN4 of board.
> Below are the C code:
> #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)
> {
>    unsigned char *start;
>    volatile unsigned int *PCDR, *PCDDR;
>    int fd = open("/dev/mem", O_RDWR);
> 
> 
>    start = mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 
> 0x80840000);
>    PCDR = (unsigned int *)(start + 0x08);     // port c data register
>    PCDDR = (unsigned int *)(start + 0x18);    // port c direction register
> 
>    *PCDDR = 0x01; // Make bit 0 an output Port C bit 0 is connected to the LED
> 
>    *PCDR &= 0xFE; // Turn the LED on
>    sleep(30);  // Output on for 30 seconds
>    *PCDR |= 0x01; // Turn the LED  off
> 
>    close(fd);
>    return 0;
> }
> And Problem is that after 30 seconds its no becoming low(LED off).Keep on 
> giving +3V on PIN4 of Board.
> Will anybody have an idea about that???
>




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