40 lines
1.0 KiB
C++
40 lines
1.0 KiB
C++
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#ifdef ESP32
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// This file contains functions specific to the ESP32.
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#include "IRremote.h"
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#include "IRremoteInt.h"
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// "Idiot check"
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#ifdef USE_DEFAULT_ENABLE_IR_IN
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#error Must undef USE_DEFAULT_ENABLE_IR_IN
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#endif
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hw_timer_t *timer;
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void IRTimer(); // defined in IRremote.cpp, masqueraded as ISR(TIMER_INTR_NAME)
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//+=============================================================================
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// initialization
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//
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void IRrecv::enableIRIn ( )
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{
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// Interrupt Service Routine - Fires every 50uS
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// ESP32 has a proper API to setup timers, no weird chip macros needed
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// simply call the readable API versions :)
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// 3 timers, choose #1, 80 divider nanosecond precision, 1 to count up
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timer = timerBegin(1, 80, 1);
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timerAttachInterrupt(timer, &IRTimer, 1);
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// every 50ns, autoreload = true
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timerAlarmWrite(timer, 50, true);
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timerAlarmEnable(timer);
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// Initialize state machine variables
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irparams.rcvstate = STATE_IDLE;
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irparams.rawlen = 0;
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// Set pin modes
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pinMode(irparams.recvpin, INPUT);
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}
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#endif // ESP32
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