[ts-7000] TS 7200 serial port at full duplex

["khouryelie" <>]

hello i am trying to use my COM2 port on the TS 7200 in RS-485 Full duplex mode

apparently i have to change the mode register to hex 01 at physical address  
0x22C0_0000


_______________________________________________
the first is the code i tried to make

the second is provided within the Manuel 

can som1 point out my problem and why is it not working ?

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

int main(void)
{
        int fd,v;
        volatile unsigned int *Mode,*check;

        assert(fd != -1);

        fd = open("/dev/mem", O_RDWR | O_SYNC);

        Mode = (unsigned int 
*)mmap(0,getpagesize(),PROT_READ|PROT_WRITE,MAP_SHARED,fd,0x22C00000);

        *Mode = 0x01;

        while(1)
        {
                *Mode = 0x01;
                sleep(5);
        }

        check = (unsigned int 
*)mmap(0,getpagesize(),PROT_READ|PROT_WRITE,MAP_SHARED,fd,0x22C00000);
        printf("%p\n",check);


}


________________________________________________



#include <linux/ts_sbc.h>
#include <linux/include/asm/ioctls.h>
#define TIOC_SBCC485 _IOW('T',0x70,int) /*TS RTS/485 mode Clear*/
#define TIOC_SBCS485 _IOW('T',0x71, int) /*TS RTS/485 mode Set */
#define AUTO485FD 1
#define RTSMODE 2
#define AUTO485HD 4
mcr = AUTO485FD;
//mcr = AUTO485HD; //for half duplex
ioctl (fd, TIOC_SBCS485, &mcr);
//write() and read() from fd
ioctl (fd, TIOC_SBCC485, &mcr);
//further reads() and writes() may not behave





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