Add support for Teensy 3.0

Author: PaulStoffregen

IRremote.cpp

@@ -225,15 +225,15 @@ void IRsend::mark(int time) {
  // Sends an IR mark for the specified number of microseconds.
  // The mark output is modulated at the PWM frequency.
  TIMER_ENABLE_PWM; // Enable pin 3 PWM output
- delayMicroseconds(time);
+ if (time > 0) delayMicroseconds(time);
 }
 
 /* Leave pin off for time (given in microseconds) */
 void IRsend::space(int time) {
  // Sends an IR space for the specified number of microseconds.
  // A space is no output, so the PWM output is disabled.
  TIMER_DISABLE_PWM; // Disable pin 3 PWM output
- delayMicroseconds(time);
+ if (time > 0) delayMicroseconds(time);
 }
 
 void IRsend::enableIROut(int khz) {

IRremoteInt.h

@@ -46,6 +46,10 @@
  //#define IR_USE_TIMER3 // tx = pin 9
  #define IR_USE_TIMER4_HS // tx = pin 10
 
+// Teensy 3.0
+#elif defined(__MK20DX128__)
+ #define IR_USE_TIMER_CMT // tx = pin 5
+
 // Teensy++ 1.0 & 2.0
 #elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
  //#define IR_USE_TIMER1 // tx = pin 25
@@ -426,6 +430,54 @@ extern volatile irparams_t irparams;
 #endif
 
 
+// defines for special carrier modulator timer
+#elif defined(IR_USE_TIMER_CMT)
+#define TIMER_RESET ({	\
+uint8_t tmp = CMT_MSC;	\
+CMT_CMD2 = 30;	\
+})
+#define TIMER_ENABLE_PWM CORE_PIN5_CONFIG = PORT_PCR_MUX(2)|PORT_PCR_DSE|PORT_PCR_SRE
+#define TIMER_DISABLE_PWM CORE_PIN5_CONFIG = PORT_PCR_MUX(1)|PORT_PCR_DSE|PORT_PCR_SRE
+#define TIMER_ENABLE_INTR NVIC_ENABLE_IRQ(IRQ_CMT)
+#define TIMER_DISABLE_INTR NVIC_DISABLE_IRQ(IRQ_CMT)
+#define TIMER_INTR_NAME cmt_isr
+#ifdef ISR
+#undef ISR
+#endif
+#define ISR(f) void f(void)
+#if F_BUS == 48000000
+#define CMT_PPS_VAL 5
+#else
+#define CMT_PPS_VAL 2
+#endif
+#define TIMER_CONFIG_KHZ(val) ({	\
+SIM_SCGC4 |= SIM_SCGC4_CMT;	\
+SIM_SOPT2 |= SIM_SOPT2_PTD7PAD;	\
+CMT_PPS = CMT_PPS_VAL;	\
+CMT_CGH1 = 2667 / val;	\
+CMT_CGL1 = 5333 / val;	\
+CMT_CMD1 = 0;	\
+CMT_CMD2 = 30;	\
+CMT_CMD3 = 0;	\
+CMT_CMD4 = 0;	\
+CMT_OC = 0x60;	\
+CMT_MSC = 0x01;	\
+})
+#define TIMER_CONFIG_NORMAL() ({	\
+SIM_SCGC4 |= SIM_SCGC4_CMT;	\
+CMT_PPS = CMT_PPS_VAL;	\
+CMT_CGH1 = 1;	\
+CMT_CGL1 = 1;	\
+CMT_CMD1 = 0;	\
+CMT_CMD2 = 30;	\
+CMT_CMD3 = 0;	\
+CMT_CMD4 = 19;	\
+CMT_OC = 0;	\
+CMT_MSC = 0x03;	\
+})
+#define TIMER_PWM_PIN 5
+
+
 #else // unknown timer
 #error "Internal code configuration error, no known IR_USE_TIMER# defined\n"
 #endif