Merge pull request #12 from okrasolar/master

Pull changes from Okra's fork

.gitignore

@@ -5,6 +5,7 @@ build
 build_stm
 build_linux
 build_mbed
+dep
 
 # Ignore the Meson packagecache dir
 packagecache

cicada/commdevices/atcommdevice.cpp

@@ -24,8 +24,8 @@
 #include "cicada/commdevices/atcommdevice.h"
 #include <cinttypes>
 #include <cstddef>
-#include <cstdio>
 #include <cstring>
+#include "printf.h"
 
 #define MIN_SPACE_AVAILABLE 22
 
@@ -169,3 +169,13 @@ Size ATCommDevice::serialRead(char* data, Size maxSize)
 
     return 0;
 }
+
+void ATCommDevice::requestRSSI()
+{
+    _rssi = INT16_MAX;
+}
+
+int16_t ATCommDevice::getRSSI()
+{
+    return _rssi;
+}

cicada/commdevices/atcommdevice.h

@@ -70,6 +70,22 @@ class ATCommDevice : public IPCommDevice
      */
     virtual Size serialRead(char* data, Size maxSize);
 
+    /*!
+     * Request the RSSI (signal strength) from the modem. It can then be
+     * retreieved with getRSSI();
+     */
+    void requestRSSI();
+
+    /*!
+     * Actually get the value for RSSI (signal strength), which has
+     * been requested by requestRSSI(). If the signal strength has been
+     * requested but not yet been retrieved, the returned value will
+     * be INT16_MAX.
+     *
+     * \return RSSI value in dBm, or INT16_MAX if a request is still pending.
+     */
+    int16_t getRSSI();
+
   protected:
     void logStates(int8_t sendState, int8_t replyState);
     bool handleDisconnect(int8_t nextState);
@@ -91,6 +107,8 @@ class ATCommDevice : public IPCommDevice
     Size _bytesToReceive;
     Size _bytesToRead;
 
+    int16_t _rssi;
+
     static const char* _okStr;
     static const char* _lineEndStr;
     static const char* _quoteEndStr;