GSM: allow to enable and disable AT messages trace

Author: pennam

libraries/GSM/src/GSM.cpp

@@ -75,6 +75,8 @@ int arduino::GSMClass::begin(const char* pin, const char* apn, const char* usern
 
   _device = _context->get_device();
 
+  _device->modem_debug_on(_at_debug);
+
   _device->set_cmux_status_flag(_cmuxGSMenable);
 
   _context->set_sim_pin(pin);

libraries/GSM/src/GSM.h

@@ -110,7 +110,7 @@ class GSMClass : public MbedSocketClass {
   bool isCmuxEnable();
 #if MBED_CONF_MBED_TRACE_ENABLE
   void trace(Stream& stream);
-  void setTraceLevel(int trace_level, bool timestamp = false);
+  void setTraceLevel(int trace_level, bool timestamp = false, bool at_trace = false);
 #endif
   int ping(const char* hostname, uint8_t ttl = 128);
   int ping(const String& hostname, uint8_t ttl = 128);
@@ -133,6 +133,7 @@ class GSMClass : public MbedSocketClass {
   NetworkInterface* gsm_if = nullptr;
   mbed::CellularContext* _context = nullptr;
   mbed::CellularDevice* _device = nullptr;
+  bool _at_debug = false;
 };
 
 }

libraries/GSM/src/GSMTrace.cpp

@@ -47,7 +47,7 @@ static void trace_println(const char* c) {
 }
 #endif
 
-void arduino::GSMClass::setTraceLevel(int trace_level, bool timestamp) {
+void arduino::GSMClass::setTraceLevel(int trace_level, bool timestamp, bool at_trace) {
 #if MBED_CONF_MBED_TRACE_ENABLE
   switch(trace_level) {
     case 0:  mbed_trace_config_set(TRACE_ACTIVE_LEVEL_NONE);  break;
@@ -60,6 +60,8 @@ void arduino::GSMClass::setTraceLevel(int trace_level, bool timestamp) {
     default: mbed_trace_config_set(TRACE_ACTIVE_LEVEL_ALL);   break;
   }
 
+  _at_debug = at_trace;
+
   if (timestamp) {
     mbed_trace_prefix_function_set( &trace_time );
   }