Revert "Added ESP32 IR receive support (IRsend not implemented yet)."

irRecv.cpp

@@ -1,10 +1,5 @@
 #include "IRremote.h"
 #include "IRremoteInt.h"
-
-#ifdef IR_TIMER_USE_ESP32
-hw_timer_t *timer;
-void IRTimer(); // defined in IRremote.cpp
-#endif
 
 //+=============================================================================
 // Decodes the received IR message
@@ -122,17 +117,6 @@ IRrecv::IRrecv (int recvpin, int blinkpin)
 //
 void  IRrecv::enableIRIn ( )
 {
-// Interrupt Service Routine - Fires every 50uS
-#ifdef ESP32
-	// ESP32 has a proper API to setup timers, no weird chip macros needed
-	// simply call the readable API versions :)
-	// 3 timers, choose #1, 80 divider nanosecond precision, 1 to count up
-	timer = timerBegin(1, 80, 1);
-	timerAttachInterrupt(timer, &IRTimer, 1);
-	// every 50ns, autoreload = true
-	timerAlarmWrite(timer, 50, true);
-	timerAlarmEnable(timer);
-#else
 	cli();
 	// Setup pulse clock timer interrupt
 	// Prescale /8 (16M/8 = 0.5 microseconds per tick)
@@ -146,7 +130,6 @@ void  IRrecv::enableIRIn ( )
 	TIMER_RESET;
 
 	sei();  // enable interrupts
-#endif
 
 	// Initialize state machine variables
 	irparams.rcvstate = STATE_IDLE;