align with master

revert revert #29

Author: Jason2866

Diff for: cores/esp32/esp32-hal.h

@@ -90,6 +90,8 @@ void yield(void);
 #include "esp32-hal-psram.h"
 #include "esp32-hal-cpu.h"
 
+void analogWrite(uint8_t pin, int value);
+
 //returns chip temperature in Celsius
 float temperatureRead();