Epson UB-E02, Technical Reference Manual

Page: 63 / 86

Rev. A 4-5 Programming Samples
UB-E02 Technical Reference Guide
4.2.2 For Linux
The program is a sample of printing “EPSON UB-E02” to a TM printer with the UB-E02 from
Linux, through the ethernet connection.
/* TCP00 programming sample for LINUX
* HOW TO BUILD
* cc ltcp.c
*/
#include <stdio.h>
#include <netdb.h>
int main(int argc, char* argv[])
{
int sock;
struct sockaddr_in addr;
if (argc != 2) {
printf("usage: ltcp <ip address>\n");
exit(1);
}
/* create socket */
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0) {
perror("socket()");
exit(1);
}
/* initialize the parameter */
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(9100);
addr.sin_addr.s_addr = inet_addr(argv[1]);
/* connect */
if (connect(sock, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
perror("connect()");
}
printf("connected\n");
/* send data */
send(sock, "EPSON\n", 6, 0);
/* close socket */
close(sock);
return 0;
}