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#include <arpa/inet.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#define PORT 2319
int main(int argc, char **argv) {
int ret;
char c, last;
ssize_t in;
int fd;
int sfd;
char buf[256];
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(PORT);
addr.sin_addr.s_addr = htonl(INADDR_BROADCAST);
sfd = socket(AF_INET, SOCK_DGRAM, 0);
if(sfd < 0) {
perror("Failed to open socket");
exit(EXIT_FAILURE);
}
ret = bind(sfd, (struct sockaddr*) &addr, sizeof(addr));
if(ret < 0) {
perror("Failed to bind socket");
exit(EXIT_FAILURE);
}
for(;;) {
in = read(sfd, buf, sizeof(buf) - 1);
if(in < 0) {
perror("Failed to read from serial port");
exit(EXIT_FAILURE);
}
buf[in] = 0;
ret = sscanf(buf, "%c->%c\n", &last, &c);
if(ret < 2)
continue;
if(last == 'L' && c == 'H')
system("/home/jake/.bin/scripts/reed open");
if(last == 'H' && c == 'L')
system("/home/jake/.bin/scripts/reed close");
}
return 0;
}
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