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

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Subject: [ts-7000] Re: Control The I/O of TS-7300
From: "ts7300" <>
Date: Wed, 16 Sep 2009 11:26:09 -0000
Can somebody assist me upon this.
By default 3V is coming at DIO1 pin4.what data register value I supposed to set 
to toggle the o/p 3.3v and 0v.
Will it be PCDR:0xFE for 0v??
           PCDR:0X01 FOR 1V.??
--- In  "ts7300" <> wrote:
>
> 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" <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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