void main()
{
int fildes;
fildes = setup_modem();
modem_send_command( fildes, MODEM_RESET_STRING );
modem_receive_response( fildes );
if ( strcmp(message, "OK\n") != 0 )
{
fprintf( stderr, "Modem did not return OK on reset.\n" );
exit(1);
}
do
{
modem_send_command( fildes, MODEM_DIAL_STRING );
modem_receive_response( fildes );
}
while ( strcmp(message, "BUSY\n") == 0 );
printf("modem returned: %s\n", message);
close(fildes);
exit(0);
}
static int modem_probe_caps(int fd, glong timeout_ms)
{
const char *gcap_responses[] = { GCAP_TAG, NULL };
const char *terminators[] = { "OK", "ERROR", "ERR", "+CME ERROR", NULL };
char *reply = NULL;
int idx = -1, term_idx = -1, ret = 0;
gboolean try_ati = FALSE;
GTimeVal start, end;
gboolean send_success;
/* If a delay was specified, start a bit later */
if (timeout_ms > 500) {
g_usleep (500000);
timeout_ms -= 500;
}
/* Standard response timeout case */
timeout_ms += 3000;
while (timeout_ms > 0) {
GTimeVal diff;
gulong sleep_time = 100000;
g_get_current_time (&start);
idx = term_idx = 0;
send_success = modem_send_command (fd, "AT+GCAP\r\n");
if (send_success)
idx = modem_wait_reply (fd, 2, gcap_responses, terminators, &term_idx, &reply);
else
sleep_time = 300000;
g_get_current_time (&end);
g_timeval_subtract (&diff, &end, &start);
timeout_ms -= (diff.tv_sec * 1000) + (diff.tv_usec / 1000);
if (send_success) {
if (0 == term_idx && 0 == idx) {
/* Success */
verbose ("GCAP response: %s", reply);
ret = parse_gcap (reply);
break;
} else if (0 == term_idx && -1 == idx) {
/* Just returned "OK" but no GCAP (Sierra) */
try_ati = TRUE;
break;
} else if (3 == term_idx && -1 == idx) {
/* No SIM (Huawei) */
try_ati = TRUE;
break;
} else if (1 == term_idx || 2 == term_idx) {
try_ati = TRUE;
} else
verbose ("timed out waiting for GCAP reply (idx %d, term_idx %d)", idx, term_idx);
g_free (reply);
reply = NULL;
}
g_usleep (sleep_time);
timeout_ms -= sleep_time / 1000;
}
if (!ret && try_ati) {
const char *ati_responses[] = { GCAP_TAG, NULL };
/* Many cards (ex Sierra 860 & 875) won't accept AT+GCAP but
* accept ATI when the SIM is missing. Often the GCAP info is
* in the ATI response too.
*/
g_free (reply);
reply = NULL;
verbose ("GCAP failed, trying ATI...%s", "");
if (modem_send_command (fd, "ATI\r\n")) {
idx = modem_wait_reply (fd, 3, ati_responses, terminators, &term_idx, &reply);
if (0 == term_idx && 0 == idx) {
verbose ("ATI response: %s", reply);
ret = parse_gcap (reply);
}
}
}
g_free (reply);
reply = NULL;
/* Try an alternate method on some hardware (ex BUSlink SCWi275u) */
if ((idx != -2) && !(ret & MODEM_CAP_GSM) && !(ret & MODEM_CAP_IS707_A)) {
const char *gmm_responses[] = { GMM_TAG, NULL };
if (modem_send_command (fd, "AT+GMM\r\n")) {
idx = modem_wait_reply (fd, 5, gmm_responses, terminators, &term_idx, &reply);
if (0 == term_idx && 0 == idx) {
verbose ("GMM response: %s", reply);
ret |= parse_gmm (reply);
}
g_free (reply);
}
}
return ret;
}
