Feather 32u4 support, readme update and pmic fix

Author: Kacp3r3

README.md

@@ -16,7 +16,9 @@ The code will manage the LTE-M, GSM and WiFi connection(depending on currently u
 | Arduino MKR 1500 NB | OK | OK | OK |
 | Arduino MKR VIDOR 4000 | OK | OK* | - |
 | Arduino Nano 33 IoT | OK | OK | - |
-| ESP8266 Boards(Beta) | OK | - | - |
+| ESP8266 Boards | OK | - | - |
+| ESP32 Boards | OK | OK | - |
+| Feather 32u4 | OK | - | OK |
 
 ## Prerequisites/dependecies ##
 This code needs 2 ~~3~~ external libraries to run, that you can install using the built-in [Library Manager](https://www.arduino.cc/en/guide/libraries) of the Arduino IDE.
@@ -48,6 +50,8 @@ This code needs 2 ~~3~~ external libraries to run, that you can install using th
 3. Clone or download the directory from Github.
 4. In the **'src/arduino_secrets.h'** file :
    - Paste it as initialization value for the `SECRET_LIVEOBJECTS_API_KEY` variable in the 'arduino_secrets.h' file -keep the double quotes!
+   
+   In case of feather 32u4 you have to change type of this variable to char* from String 
    - Fill in the connection(WIFI or GSM) credentials if needed (pin code, APN information, etc). In case of GSM connection, most of the time, APN will set up automatically. Your SIM card may have a default pin code (like "0000"), unless you deactivated it using the [Pin management](https://github.com/arduino-libraries/MKRNB/blob/master/examples/Tools/PinManagement/PinManagement.ino) sketch, provided with the MKRNB library.
 5. Import library into the Arduino IDE, to do this select: *Sketch-> Include Library-> Add .ZIP Library* and select folder which you cloned in the previous step(actually it doesn't need to be .ZIP-ed to be imported). After successful import you should see example sketches in *File->Examples->LiveObjectsSDK*
 

src/LiveObjects.h

@@ -1,22 +1,23 @@
 #pragma once
+
  /******************************************************************************
    Arduino MKR BOARDS
  ******************************************************************************/
 #ifdef ARDUINO_ARCH_SAMD
+
+  /* Power status for supported MKR boards*/
+  #if defined ARDUINO_SAMD_MKRWIFI1010 || defined ARDUINO_SAMD_MKRNB1500 || defined ARDUINO_SAMD_MKRGSM1400
+    #define PMIC_PRESENT
+  #endif
+
   #if defined ARDUINO_SAMD_MKRGSM1400 || defined ARDUINO_SAMD_MKRNB1500
     #define Cellular
     #include "LiveObjectsCellular.h"
   #elif defined ARDUINO_SAMD_MKRWIFI1010 || defined ARDUINO_SAMD_NANO_33_IOT || defined ARDUINO_SAMD_MKRVIDOR4000 || defined ARDUINO_SAMD_MKR1000 || ADAFRUIT_FEATHER_M0
     #define WIFI_
     #include "LiveObjectsWiFi.h"
   #endif
-
-  /* Power status for supported MKR boards*/
-  #if defined ARDUINO_SAMD_MKRWIFI1010 || defined ARDUINO_SAMD_MKRNB1500 || defined ARDUINO_SAMD_MKRGSM1400
-    #define PMIC_PRESENT
-  #endif
 #endif
-
  /******************************************************************************
    ESP8266 and ESP32 BOARDS 
  ******************************************************************************/

src/LiveObjectsBase.cpp

@@ -243,7 +243,7 @@ void LiveObjectsBase::commandManager(String topic) {
 
 void LiveObjectsBase::connect()
 {
-  #ifdef PMIC_PRESENT
+  #if defined ARDUINO_SAMD_MKRWIFI1010 || defined ARDUINO_SAMD_MKRNB1500 || defined ARDUINO_SAMD_MKRGSM1400
   batteryBegin();
   #endif
   connectNetwork();

src/LiveObjectsBase.h

@@ -392,7 +392,7 @@ inline void LiveObjectsBase::outputDebug(LOG_MSGTYPE type,T item, Args&... args)
       Serial.print(item);
       break;
     default:
-      Serial.print(item);
+      if(m_bDebug) Serial.print(item);
   }
   if(String(item)!=".") outputDebug(TXT,args...);
 }

src/LiveObjectsMKR.cpp

@@ -98,8 +98,10 @@ void LiveObjectsMKR::stopMQTT()
 
 void LiveObjectsMKR::addPowerStatus()
 {
-  #ifdef PMIC_PRESENT
+  #if defined ARDUINO_SAMD_MKRWIFI1010 || defined ARDUINO_SAMD_MKRNB1500 || defined ARDUINO_SAMD_MKRGSM1400
+  outputDebug(INFO, "READ BEFORE");
   byte DATA = readRegister(SYSTEM_STATUS_REGISTER);
+  outputDebug(INFO, "READ AFTER");
   bool charging = (DATA & ((1<<5)|(1<<4)))!=0;
   bool bat = (DATA & (1<<0)) == 0 || charging;
   bool power=(DATA & (1<<2));

src/Utils.cpp

@@ -1,7 +1,7 @@
 #include "Utils.h"
 #include <Arduino.h>
 //#if not defined ESP8266 && not defined ESP32
-#ifdef PMIC_PRESENT
+#if defined ARDUINO_SAMD_MKRWIFI1010 || defined ARDUINO_SAMD_MKRNB1500 || defined ARDUINO_SAMD_MKRGSM1400
 byte readRegister(byte address) {
     Wire.beginTransmission(PMIC_ADDRESS);
     Wire.write(address);

src/Utils.h

@@ -173,7 +173,7 @@ uint8_t hexBinary(char msb, char lsb);
  * 
  * ****************************************************************************/
 //#if not defined ESP8266 && not defined ESP32
-#ifdef PMIC_PRESENT
+#if defined ARDUINO_SAMD_MKRWIFI1010 || defined ARDUINO_SAMD_MKRNB1500 || defined ARDUINO_SAMD_MKRGSM1400
 #define PMIC_ADDRESS 0x6B
 #define SYSTEM_STATUS_REGISTER 0x08
 #define PMIC_VERSION_REGISTER 0x0A