static int8_t gsmAutobaud(void)
{
char buff[8];
int8_t try;
int8_t resp;
// A HEX string such as “00 49 49 49 49 FF FF FF FF” will be sent out
// through serial port at the baud rate of 115200 immediately after
// SIM900 is powered on.
// Send AT command for autobaud
gsmDebug("Autobauding...\n");
for(try=3; try; try--) {
_gsmWriteLine("AT");
_gsmRead(buff, 8);
if (buff[0] == '0') {
gsmDebug("DONE\n");
// The GSM has been already configured:
// return error to avoid re-configuration
return ERROR;
}
resp = _gsmReadResult();
if (resp == OK) {
gsmDebug("DONE\n");
return resp;
}
gsmDebug("FAILED\n");
}
return ERROR;
}
#else
# define gsmAutobaud() OK
#endif
static int8_t gsmConfigure(void)
{
char buff[8];
int8_t resp;
// Load configuration
_gsmWriteLine("ATE0");
_gsmRead(buff, 8);
resp = _gsmReadResult();
if (resp != OK) {
return resp;
}
// Configure TA Response Format
_gsmWriteLine("ATV0");
resp = _gsmReadResult();
if (resp != OK) {
return resp;
}
return OK;
}
int8_t gsmPowerOn(void)
{
int8_t result;
// TODO: check if the modem is already on
// either using the STATUS line or by sending an AT command
if (gsm_status()) {
#if 0
// Modem already ON... checking AT command
_gsmWriteLine("AT");
result = _gsmReadResult();
if (result == OK)
return result;
// Not responding to AT comand... shut-down
gsm_powerOff();
DELAY(10000);
#endif
// Resetting the modem
LOG_INFO("GSM: Resetting...\n");
gsm_reset();
} else {
LOG_INFO("GSM: Powering-on...\n");
gsm_on();
}
// When DCE powers on with the autobauding enabled, it is recommended
// to wait 2 to 3 seconds before sending the first AT character.
LOG_INFO("Wait (20s) for network attachment\n");
DELAY(20000);
result = gsmAutobaud();
if (result != OK)
return result;
result = gsmConfigure();
return result;
}
void gsmPowerOff(void)
{
LOG_INFO("GSM: Powering-off...\n");
gsm_off();
LED_GSM_OFF();
}
void
GSMTask (void *arg)
{
static const char fname[] = "GSMTask";
void *msg;
phn_syshdr_t *syshdr;
boolean release_msg = TRUE;
/*
* Get the GSM message queue handle
* A hack until the tasks in irx are
* CPRized.
*/
gsm_msg_queue = (cprMsgQueue_t) arg;
if (!gsm_msg_queue) {
GSM_ERR_MSG(GSM_F_PREFIX"invalid input, exiting\n", fname);
return;
}
if (platThreadInit("GSMTask") != 0) {
return;
}
/*
* Adjust relative priority of GSM thread.
*/
(void) cprAdjustRelativeThreadPriority(GSM_THREAD_RELATIVE_PRIORITY);
/*
* Initialize all the GSM modules
*/
lsm_init();
fsm_init();
fim_init();
gsm_init();
dcsm_init();
cc_init();
fsmutil_init_shown_calls_ci_map();
/*
* On Win32 platform, the random seed is stored per thread; therefore,
* each thread needs to seed the random number. It is recommended by
* MS to do the following to ensure randomness across application
* restarts.
*/
cpr_srand((unsigned int)time(NULL));
/*
* Cache random numbers for SRTP keys
*/
gsmsdp_cache_crypto_keys();
while (1) {
release_msg = TRUE;
msg = cprGetMessage(gsm_msg_queue, TRUE, (void **) &syshdr);
if (msg) {
switch (syshdr->Cmd) {
case TIMER_EXPIRATION:
gsm_process_timer_expiration(msg);
break;
case GSM_SIP:
case GSM_GSM:
release_msg = gsm_process_msg(syshdr->Cmd, msg);
break;
case DP_MSG_INIT_DIALING:
case DP_MSG_DIGIT_STR:
case DP_MSG_STORE_DIGIT:
case DP_MSG_DIGIT:
case DP_MSG_DIAL_IMMEDIATE:
case DP_MSG_REDIAL:
case DP_MSG_ONHOOK:
case DP_MSG_OFFHOOK:
case DP_MSG_UPDATE:
case DP_MSG_DIGIT_TIMER:
case DP_MSG_CANCEL_OFFHOOK_TIMER:
dp_process_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_B2BCNF_SUBSCRIBE_RESP:
case SUB_MSG_B2BCNF_NOTIFY:
case SUB_MSG_B2BCNF_TERMINATE:
sub_process_b2bcnf_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_FEATURE_SUBSCRIBE_RESP:
case SUB_MSG_FEATURE_NOTIFY:
case SUB_MSG_FEATURE_TERMINATE:
sub_process_feature_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_KPML_SUBSCRIBE:
case SUB_MSG_KPML_TERMINATE:
case SUB_MSG_KPML_NOTIFY_ACK:
case SUB_MSG_KPML_SUBSCRIBE_TIMER:
case SUB_MSG_KPML_DIGIT_TIMER:
kpml_process_msg(syshdr->Cmd, msg);
break;
case REG_MGR_STATE_CHANGE:
gsm_reset();
break;
case THREAD_UNLOAD:
destroy_gsm_thread();
break;
default:
GSM_ERR_MSG(GSM_F_PREFIX"Unknown message\n", fname);
break;
}
cprReleaseSysHeader(syshdr);
if (release_msg == TRUE) {
cprReleaseBuffer(msg);
}
/* Check if there are pending messages for dcsm
* if it in the right state perform its operation
*/
dcsm_process_jobs();
}
}
}
void gsmReset(void)
{
LOG_INFO("GSM: Reset\n");
gsm_reset();
}
