Added Charging Safety Timer Management

Added Charging Safety Timer Management in order to fix arduino-libraries#11

Author: Rocketct

src/BQ24195.cpp

@@ -459,6 +459,15 @@ bool PMICClass::enableCharging() {
     DATA = DATA & 0b11001111;
     DATA = DATA | 0b00010000;
     return writeRegister(POWERON_CONFIG_REGISTER, DATA);
+
+    // enable Charging Safety Timer
+    DATA = readRegister(CHARGE_TIMER_CONTROL_REGISTER);
+
+    if (DATA == -1) {
+        return 0;
+    }
+
+    return writeRegister(CHARGE_TIMER_CONTROL_REGISTER, (DATA | 0b00001000));
 }
 
 /*******************************************************************************
@@ -475,7 +484,18 @@ bool PMICClass::disableCharging() {
         return 0;
     }
 
-    return writeRegister(POWERON_CONFIG_REGISTER, DATA & 0xCF);
+    if (writeRegister(POWERON_CONFIG_REGISTER, DATA & 0xCF)){
+        return 0;
+    }
+
+    // disable Charging Safety Timer
+    DATA = readRegister(CHARGE_TIMER_CONTROL_REGISTER);
+
+    if (DATA == -1) {
+        return 0;
+    }
+
+    return writeRegister(CHARGE_TIMER_CONTROL_REGISTER, (DATA & 0b11110110));
 }
 
 /*******************************************************************************