Merge pull request #575 from blinker-iot/dev_3.0

update codes, upgrade supports code.

Author: i3water

examples/Blinker_AHRS/AHRS_BLE/AHRS_BLE.ino

@@ -53,7 +53,7 @@ char pswd[] = "Your WiFi network WPA password or WEP key";
 
 void configGet(const String & data)
 {
-    BLINKER_LOG("Blinker.configGet(): ", data);
+    BLINKER_LOG("config get: ", data);
 }
 
 void dataRead(const String & data)
@@ -66,11 +66,12 @@ void dataRead(const String & data)
     Blinker.print("millis", BlinkerTime);
 
     digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
-    if (Blinker.configUpdate("Hello blinker!")) {
+
+    // update data must be Json
+    if (Blinker.configUpdate("{\"Hello\":\"blinker\"}")) 
+    {
         Blinker.configGet();
     }
-
-    Blinker.delay(60000);
 }
 
 void setup()