Adjustment hwCPUFrequency() type

libraries/MySensors/core/MyHw.h

@@ -45,8 +45,7 @@ uint8_t hwReadConfig(int adr);
 int8_t hwSleep(unsigned long ms);
 int8_t hwSleep(uint8_t interrupt, uint8_t mode, unsigned long ms);
 int8_t hwSleep(uint8_t interrupt1, uint8_t mode1, uint8_t interrupt2, uint8_t mode2, unsigned long ms);
-uint16_t hwCPUVoltage(); 
-uint16_t hwCPUFrequency(); 
+
 #ifdef MY_DEBUG
 	void hwDebugPrint(const char *fmt, ... );
 #endif

libraries/MySensors/core/MyHwATMega328.cpp

@@ -152,7 +152,7 @@ uint16_t hwCPUVoltage() {
 	return (1125300UL) / ADC;
 }
 
-uint16_t hwCPUFrequency() {
+uint8_t hwCPUFrequency() {
 	noInterrupts();
 	// setup timer1
 	TIFR1 = 0xFF;   

libraries/MySensors/core/MyHwESP8266.cpp

@@ -113,7 +113,7 @@ uint16_t hwCPUVoltage() {
 	return ESP.getVcc();
 }
 
-uint16_t hwCPUFrequency() {
+uint8_t hwCPUFrequency() {
 	return ESP.getCpuFreqMHz();
 }
 

libraries/MySensors/core/MyHwSAMD.cpp

@@ -135,16 +135,6 @@ int8_t hwSleep(uint8_t interrupt1, uint8_t mode1, uint8_t interrupt2, uint8_t mo
   return -2;
 }
 
-uint16_t hwCPUVoltage() {
-	// TODO: not supported
-	return 0;
-}
-
-uint16_t hwCPUFrequency() {
-	// TODO: not supported
-	return 0;
-}
-
 #ifdef MY_DEBUG
 void hwDebugPrint(const char *fmt, ... ) {
 	char fmtBuffer[300];