Merge back irISR.cpp into irRemote.cpp to avoid an issue due to the absence of exported symbols from irISR.cpp

see https://github.com/z3t0/Arduino-IRremote/issues/214 sudar/Arduino-Makefile#376 In some circumstances the linker skips irISR.cpp irRemote.cpp is always included (by the linker). Andrea

Author: audetto

IRremote.cpp

@@ -18,6 +18,8 @@
 // Whynter A/C ARC-110WD added by Francesco Meschia
 //******************************************************************************
 
+#include <avr/interrupt.h>
+
 // Defining IR_GLOBAL here allows us to declare the instantiation of global variables
 #define IR_GLOBAL
 #include "IRremote.h"
@@ -88,3 +90,87 @@ int MATCH_SPACE (int measured_ticks, int desired_us)
 return ((measured_ticks >= TICKS_LOW (desired_us - MARK_EXCESS))
  && (measured_ticks <= TICKS_HIGH(desired_us - MARK_EXCESS)));
 }
+
+//+=============================================================================
+// Interrupt Service Routine - Fires every 50uS
+// TIMER2 interrupt code to collect raw data.
+// Widths of alternating SPACE, MARK are recorded in rawbuf.
+// Recorded in ticks of 50uS [microseconds, 0.000050 seconds]
+// 'rawlen' counts the number of entries recorded so far.
+// First entry is the SPACE between transmissions.
+// As soon as a the first [SPACE] entry gets long:
+// Ready is set; State switches to IDLE; Timing of SPACE continues.
+// As soon as first MARK arrives:
+// Gap width is recorded; Ready is cleared; New logging starts
+//
+ISR (TIMER_INTR_NAME)
+{
+TIMER_RESET;
+
+// Read if IR Receiver -> SPACE [xmt LED off] or a MARK [xmt LED on]
+// digitalRead() is very slow. Optimisation is possible, but makes the code unportable
+uint8_t irdata = (uint8_t)digitalRead(irparams.recvpin);
+
+irparams.timer++; // One more 50uS tick
+if (irparams.rawlen >= RAWBUF) irparams.rcvstate = STATE_OVERFLOW ; // Buffer overflow
+
+switch(irparams.rcvstate) {
+//......................................................................
+case STATE_IDLE: // In the middle of a gap
+if (irdata == MARK) {
+if (irparams.timer < GAP_TICKS) { // Not big enough to be a gap.
+irparams.timer = 0;
+
+} else {
+// Gap just ended; Record duration; Start recording transmission
+irparams.overflow = false;
+irparams.rawlen = 0;
+irparams.rawbuf[irparams.rawlen++] = irparams.timer;
+irparams.timer = 0;
+irparams.rcvstate = STATE_MARK;
+}
+}
+break;
+//......................................................................
+case STATE_MARK: // Timing Mark
+if (irdata == SPACE) { // Mark ended; Record time
+irparams.rawbuf[irparams.rawlen++] = irparams.timer;
+irparams.timer = 0;
+irparams.rcvstate = STATE_SPACE;
+}
+break;
+//......................................................................
+case STATE_SPACE: // Timing Space
+if (irdata == MARK) { // Space just ended; Record time
+irparams.rawbuf[irparams.rawlen++] = irparams.timer;
+irparams.timer = 0;
+irparams.rcvstate = STATE_MARK;
+
+} else if (irparams.timer > GAP_TICKS) { // Space
+// A long Space, indicates gap between codes
+// Flag the current code as ready for processing
+// Switch to STOP
+// Don't reset timer; keep counting Space width
+irparams.rcvstate = STATE_STOP;
+}
+break;
+//......................................................................
+case STATE_STOP: // Waiting; Measuring Gap
+ if (irdata == MARK) irparams.timer = 0 ; // Reset gap timer
+ break;
+//......................................................................
+case STATE_OVERFLOW: // Flag up a read overflow; Stop the State Machine
+irparams.overflow = true;
+irparams.rcvstate = STATE_STOP;
+ break;
+}
+
+// If requested, flash LED while receiving IR data
+if (irparams.blinkflag) {
+if (irdata == MARK)
+if (irparams.blinkpin) digitalWrite(irparams.blinkpin, HIGH); // Turn user defined pin LED on
+else BLINKLED_ON() ; // if no user defined LED pin, turn default LED pin for the hardware on
+else if (irparams.blinkpin) digitalWrite(irparams.blinkpin, LOW); // Turn user defined pin LED on
+else BLINKLED_OFF() ; // if no user defined LED pin, turn default LED pin for the hardware on
+}
+}