Cellular: Mark to be deprecated in CellularDevice

Author: Ari Parkkila

features/cellular/framework/API/CellularDevice.h

@@ -222,14 +222,22 @@ class CellularDevice {
     /** Stop the current operation. Operations: set_device_ready, set_sim_ready, register_to_network, attach_to_network
      *
      */
+    MBED_DEPRECATED_SINCE("mbed-os-5.15", "Use CellularDevice::shutdown() instead.")
     void stop();
 
     /** Get the current FileHandle item used when communicating with the modem.
      *
      *  @return reference to FileHandle
      */
+    MBED_DEPRECATED_SINCE("mbed-os-5.15", "Use CellularDevice::get_filehandle() instead.")
     FileHandle &get_file_handle() const;
 
+    /** Get the current filehandle.
+     *
+     *  @return pointer to filehandle or NULL
+     */
+    FileHandle *get_filehandle() const;
+
     /** Get event queue that can be chained to main event queue.
      *  @return event queue
      */

features/cellular/framework/device/CellularDevice.cpp

@@ -58,6 +58,11 @@ FileHandle &CellularDevice::get_file_handle() const
     return *_fh;
 }
 
+FileHandle *CellularDevice::get_filehandle() const
+{
+    return _fh;
+}
+
 events::EventQueue *CellularDevice::get_queue()
 {
     return &_queue;