Fix build

.travis.yml

@@ -32,13 +32,12 @@ install:
     #
     # Libraries from PlatformIO Library Registry:
     #
-    # http://platformio.org/lib/show/415/Blynk
-    # http://platformio.org/lib/show/419/SimpleTimer
     # http://platformio.org/lib/show/89/PubSubClient
-    # http://platformio.org/lib/show/44/Time
+    # http://platformio.org/lib/show/415/Blynk
+    # http://platformio.org/lib/show/1202/CRC32
     # http://platformio.org/lib/show/1286/StreamDebugger
 
-    - platformio lib -g install 415 419 89 44 1286
+    - platformio lib -g install 89 415 1202 1286
 
 script:
     - platformio ci --lib="." $PLATFORMIO_CI_ARGS

TinyGsmClient.h

@@ -41,8 +41,8 @@
 #endif
 
 #define GSM_NL "\r\n"
-static constexpr char GSM_OK[] GSM_PROGMEM = "OK" GSM_NL;
-static constexpr char GSM_ERROR[] GSM_PROGMEM = "ERROR" GSM_NL;
+static const char GSM_OK[] GSM_PROGMEM = "OK" GSM_NL;
+static const char GSM_ERROR[] GSM_PROGMEM = "ERROR" GSM_NL;
 
 class TinyGsmClient
     : public Client
@@ -88,7 +88,7 @@ public:
     host += ip[2];
     host += ".";
     host += ip[3];
-    return modemConnect(host.c_str(), port);
+    return modemConnect(host.c_str(), port); //TODO: c_str may be missing
   }
 
   virtual void stop() {
@@ -276,6 +276,18 @@ public:
     }
   }
 
+  bool simUnlock(const char *pin)
+  {
+    sendAT(F("+CPIN="), pin);
+    return waitResponse() == 1;
+  }
+
+  bool simGetCCID() {
+    sendAT(F("+CCID"));
+    //TODO...
+  }
+
+
 private:
   int modemConnect(const char* host, uint16_t port) {
     sendAT(F("+CIPSTART="), mux, ',', F("\"TCP"), F("\",\""), host, F("\","), port);