58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
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/*
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* Test program to read from meter.
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* By Dan Ponte
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*/
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <termios.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <sys/ioctl.h>
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int fd, siz, stat;
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struct tm tim;
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time_t now;
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sig_t* than(int s);
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int main(int argc, char* argv[])
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{
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char buffer[16];
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struct termios tr;
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if(argc < 2) exit(-1);
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fd = open(argv[1], O_RDWR);
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if(fd == -1) {
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perror(argv[0]);
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exit(-1);
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}
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tcgetattr(fd, &tr);
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cfsetispeed(&tr, 1200);
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cfsetospeed(&tr, 1200);
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tr.c_cflag &= ~PARENB;
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tr.c_cflag &= ~CSTOPB;
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tr.c_cflag |= CSTOPB;
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tr.c_cflag &= ~CSIZE;
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tr.c_cflag |= CS7;
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tcsetattr(fd, TCSANOW, &tr);
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ioctl(fd, TIOCMGET, &stat);
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stat &= ~TIOCM_RTS;
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ioctl(fd, TIOCMSET, &stat);
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fprintf(stderr, "Serial port initialized.\n");
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while(1) {
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if(write(fd, "D", 1) == -1) perror("met");
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siz = read(fd, buffer, 15);
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now = time(NULL);
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tim = *localtime(&now);
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if(siz == 14) printf("%d:%d.%d: %s\n", tim.tm_hour,
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tim.tm_min, tim.tm_sec, buffer);
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bzero(buffer, 16);
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sleep(1);
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}
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return 0;
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}
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sig_t* than(int s)
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{
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close(fd);
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exit(0);
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}
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