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#include <libserialport.h> #include <libserialport.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdbool.h> #include <string.h>
/* Helper function for error handling. */ /* Helper function for error handling. */
int check(enum sp_return result); int check(enum sp_return result);
int main(int argc, char **argv) { int main(int argc, char **argv) {
struct sp_port *serial_port;
char *port_name = "/dev/ttyACM0";
const int size = 256;
char *buffer = malloc(size + 1);
const unsigned int timeout = 1000;
int result; int result;
const int size = 30;
char *buffer = malloc(size + 1);
const char *port_name = "/dev/ttyACM0";
const unsigned int timeout = 1000;
struct sp_port *serial_port;
if (argc != 2) {
printf("Usage: %s <port>\n", argv[0]);
return -1;
} else {
port_name = argv[1];
}
printf("Connecting to '%s'...\n", port_name);
check(sp_get_port_by_name(port_name, &serial_port)); check(sp_get_port_by_name(port_name, &serial_port));
printf("Opening port.\n");
check(sp_open(serial_port, SP_MODE_READ_WRITE)); check(sp_open(serial_port, SP_MODE_READ_WRITE));
printf("Setting port to 9600 8N1, no flow control.\n");
check(sp_set_baudrate(serial_port, 9600)); check(sp_set_baudrate(serial_port, 9600));
check(sp_set_bits(serial_port, 8)); check(sp_set_bits(serial_port, 8));
check(sp_set_parity(serial_port, SP_PARITY_NONE)); check(sp_set_parity(serial_port, SP_PARITY_NONE));
check(sp_set_stopbits(serial_port, 1)); check(sp_set_stopbits(serial_port, 1));
check(sp_set_flowcontrol(serial_port, SP_FLOWCONTROL_NONE)); check(sp_set_flowcontrol(serial_port, SP_FLOWCONTROL_NONE));
puts("Connected.\n");
result =
check(sp_blocking_write(serial_port, "ping", strlen("ping"), timeout));
while (true) { while (1) {
int pos = 0; result = check(sp_blocking_read(serial_port, buffer, size, timeout));
while (pos < size) { if (result == -1) {
result = check(sp_blocking_read(serial_port, buffer + pos, 1, timeout)); printf("Error reading from serial port\n");
break;
if (result == -1) { } else if (result == 0) {
printf("Error reading from serial port\n"); printf("No more data\n");
break; break;
} else if (result == 0) { } else {
printf("No more data\n"); buffer[result] = '\0';
break; printf("=====\n%s\n", buffer);
} else {
if (buffer[pos] == '\n') {
buffer[pos] = '\0';
break;
} else
pos++;
}
puts(buffer);
} }
} }
free(buffer); free(buffer);
return 0;
} }
/* Helper function for error handling. */ /* Helper function for error handling. */