GSM: add setTimeout function

libraries/GSM/src/GSM.cpp

@@ -68,6 +68,7 @@ int arduino::GSMClass::begin(const char* pin, const char* apn, const char* usern
 
  _device->set_cmux_status_flag(_cmuxGSMenable);
  _device->set_retry_timeout_array(_retry_timeout, sizeof(_retry_timeout) / sizeof(_retry_timeout[0]));
+ _device->set_timeout(_timeout);
  _device->attach(mbed::callback(this, &GSMClass::onStatusChange));
  _device->init();
 
@@ -101,6 +102,10 @@ int arduino::GSMClass::begin(const char* pin, const char* apn, const char* usern
  return connect_status == NSAPI_ERROR_OK ? 1 : 0;
 }
 
+void arduino::GSMClass::setTimeout(unsigned long timeout) {
+ _timeout = timeout;
+}
+
 void arduino::GSMClass::enableCmux() {
  _cmuxGSMenable = true;
 }

libraries/GSM/src/GSM.h

@@ -100,8 +100,12 @@ class GSMClass : public MbedSocketClass {
  */
  void end(void);
 
- unsigned long getTime();
+ /*
+ * Change cellular state timeouts. Needs to be called before GSM.begin()
+ */
+ void setTimeout(unsigned long timeout);
 
+ unsigned long getTime();
  unsigned long getLocalTime();
 
  bool setTime(unsigned long const epoch, int const timezone = 0);
@@ -130,6 +134,7 @@ class GSMClass : public MbedSocketClass {
  mbed::CellularContext* _context = nullptr;
  mbed::CellularDevice* _device = nullptr;
  bool _at_debug = false;
+ unsigned long _timeout = 1000;
 
  /* Internal cellular state machine retries. Values are in seconds.
  * This array also defines the maximum number of retries to CELLULAR_RETRY_ARRAY_SIZE