Return unsigned int in readVoltage function

Author: carrascoacd

Http.cpp

@@ -172,8 +172,9 @@ void HTTP::wakeUp(){
   if (sendATTest() != TRUE) preInit();
 }
 
-void HTTP::readVoltage(char *voltage){
+unsigned int HTTP::readVoltage(){
   char buffer[64];
+  char voltage[8];
   cleanBuffer(buffer, sizeof(buffer));
   cleanBuffer(voltage, sizeof(voltage));
 
@@ -190,6 +191,7 @@ void HTTP::readVoltage(char *voltage){
       voltage[i - voltageValueStartIndex + 1] = '\0';
     }
   }
+  return atoi(voltage);
 }
 
 Result HTTP::setHTTPSession(const char *uri){

Http.h

@@ -63,7 +63,7 @@ class HTTP : public SIM800 {
     Result post(const char *uri, const char *body, char *response);
     void sleep();
     void wakeUp();
-    void readVoltage(char *voltage);
+    unsigned int readVoltage();
 
   private:
     void readResponse(char *response);