HI, im using LINUX BTW
I have to make a program to recieve calls,
and then to recieve data using the TAP protocol
To configure tap do i just open serial port, and then send
like this?
char fd, n;
n = write(fd, "300,E,7,1", 6);
// its ment to be 300 baud rate E-Even parity, 7bits, 1Paritycheck
this is my code so far, basically i need to doto recieve calls?
Code:#include <stdio.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <termios.h> #include <time.h> int main() { time_t current_time; time_t timer; //sec [0-59] timer=time(0); current_time = timer%3600; current_time = current_time%60; //printf("%d\n", current_time); char fd; struct termios options; /* open the port */ fd = open("/dev/ttyS1", O_RDWR | O_NDELAY); /* O_NOCTTY no controll of terminal O_NDELAY assume other port works O_RDWR open for read and write */ fcntl(fd, F_SETFL, 0); //FNDELAY causes read function to return a 0 if nothing in //the input buffers /* get the current options */ tcgetattr(fd, &options); /* * Set the baud rates to 19200... */ cfsetispeed(&options, B300); cfsetospeed(&options, B300); /* set raw input, 1 second timeout */ options.c_cflag |= (CLOCAL | CREAD); options.c_cflag &= ~CSIZE; /* Mask the character size bits */ options.c_cflag |= CS7; /* Select 8 data bits */ options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); //raw input options.c_oflag &= ~OPOST; //raw output options.c_cc[VMIN] = 0; //min num of char 2 read options.c_cc[VTIME] = 10; //time to wait for data 1sec /* Make changes now without waiting for data to complete */ //tcsetattr(fd, TCSANOW, &options); //close(fd); long waiting_time; if ( fd != -1 ) { char n; //n = write(fd, reset, strlen(reset)); //current_time waiting_time = (current_time+3)%60; while (current_time != waiting_time) { timer=time(0); current_time = timer%3600; current_time = current_time%60; //printf("%d\t", current_time); //printf("%d\n", waiting_time); } printf("%c", n); printf("\n"); printf("%c", fd); printf("\n"); if ( n == -1 ) { printf("Write Error"); } close( fd ); } else { printf("Can't open serial port"); } return 0; }
