/* An Alternative Software Serial Library
 * http://www.pjrc.com/teensy/td_libs_AltSoftSerial.html
 * Copyright (c) 2014 PJRC.COM, LLC, Paul Stoffregen, paul@pjrc.com
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#if defined(ALTSS_USE_TIMER1)
  #define CONFIG_TIMER_NOPRESCALE()	(TIMSK1 = 0, TCCR1A = 0, TCCR1B = (1<<ICNC1) | (1<<CS10))
  #define CONFIG_TIMER_PRESCALE_8()	(TIMSK1 = 0, TCCR1A = 0, TCCR1B = (1<<ICNC1) | (1<<CS11))
  #define CONFIG_TIMER_PRESCALE_256()	(TIMSK1 = 0, TCCR1A = 0, TCCR1B = (1<<ICNC1) | (1<<CS12))
  #define CONFIG_MATCH_NORMAL()		(TCCR1A = TCCR1A & ~((1<<COM1A1) | (1<<COM1A0)))
  #define CONFIG_MATCH_TOGGLE()		(TCCR1A = (TCCR1A & ~(1<<COM1A1)) | (1<<COM1A0))
  #define CONFIG_MATCH_CLEAR()		(TCCR1A = (TCCR1A | (1<<COM1A1)) & ~(1<<COM1A0))
  #define CONFIG_MATCH_SET()		(TCCR1A = TCCR1A | ((1<<COM1A1) | (1<<COM1A0)))
  #define CONFIG_CAPTURE_FALLING_EDGE()	(TCCR1B &= ~(1<<ICES1))
  #define CONFIG_CAPTURE_RISING_EDGE()	(TCCR1B |= (1<<ICES1))
  #define ENABLE_INT_INPUT_CAPTURE()	(TIFR1 = (1<<ICF1), TIMSK1 = (1<<ICIE1))
  #define ENABLE_INT_COMPARE_A()	(TIFR1 = (1<<OCF1A), TIMSK1 |= (1<<OCIE1A))
  #define ENABLE_INT_COMPARE_B()	(TIFR1 = (1<<OCF1B), TIMSK1 |= (1<<OCIE1B))
  #define DISABLE_INT_INPUT_CAPTURE()	(TIMSK1 &= ~(1<<ICIE1))
  #define DISABLE_INT_COMPARE_A()	(TIMSK1 &= ~(1<<OCIE1A))
  #define DISABLE_INT_COMPARE_B()	(TIMSK1 &= ~(1<<OCIE1B))
  #define GET_TIMER_COUNT()		(TCNT1)
  #define GET_INPUT_CAPTURE()		(ICR1)
  #define GET_COMPARE_A()		(OCR1A)
  #define GET_COMPARE_B()		(OCR1B)
  #define SET_COMPARE_A(val)		(OCR1A = (val))
  #define SET_COMPARE_B(val)		(OCR1B = (val))
  #define CAPTURE_INTERRUPT		TIMER1_CAPT_vect
  #define COMPARE_A_INTERRUPT		TIMER1_COMPA_vect
  #define COMPARE_B_INTERRUPT		TIMER1_COMPB_vect


#elif defined(ALTSS_USE_TIMER3)
  #define CONFIG_TIMER_NOPRESCALE()	(TIMSK3 = 0, TCCR3A = 0, TCCR3B = (1<<ICNC3) | (1<<CS30))
  #define CONFIG_TIMER_PRESCALE_8()	(TIMSK3 = 0, TCCR3A = 0, TCCR3B = (1<<ICNC3) | (1<<CS31))
  #define CONFIG_TIMER_PRESCALE_256()	(TIMSK3 = 0, TCCR3A = 0, TCCR3B = (1<<ICNC3) | (1<<CS32))
  #define CONFIG_MATCH_NORMAL()		(TCCR3A = TCCR3A & ~((1<<COM3A1) | (1<<COM3A0)))
  #define CONFIG_MATCH_TOGGLE()		(TCCR3A = (TCCR3A & ~(1<<COM3A1)) | (1<<COM3A0))
  #define CONFIG_MATCH_CLEAR()		(TCCR3A = (TCCR3A | (1<<COM3A1)) & ~(1<<COM3A0))
  #define CONFIG_MATCH_SET()		(TCCR3A = TCCR3A | ((1<<COM3A1) | (1<<COM3A0)))
  #define CONFIG_CAPTURE_FALLING_EDGE()	(TCCR3B &= ~(1<<ICES3))
  #define CONFIG_CAPTURE_RISING_EDGE()	(TCCR3B |= (1<<ICES3))
  #define ENABLE_INT_INPUT_CAPTURE()	(TIFR3 = (1<<ICF3), TIMSK3 = (1<<ICIE3))
  #define ENABLE_INT_COMPARE_A()	(TIFR3 = (1<<OCF3A), TIMSK3 |= (1<<OCIE3A))
  #define ENABLE_INT_COMPARE_B()	(TIFR3 = (1<<OCF3B), TIMSK3 |= (1<<OCIE3B))
  #define DISABLE_INT_INPUT_CAPTURE()	(TIMSK3 &= ~(1<<ICIE3))
  #define DISABLE_INT_COMPARE_A()	(TIMSK3 &= ~(1<<OCIE3A))
  #define DISABLE_INT_COMPARE_B()	(TIMSK3 &= ~(1<<OCIE3B))
  #define GET_TIMER_COUNT()		(TCNT3)
  #define GET_INPUT_CAPTURE()		(ICR3)
  #define GET_COMPARE_A()		(OCR3A)
  #define GET_COMPARE_B()		(OCR3B)
  #define SET_COMPARE_A(val)		(OCR3A = (val))
  #define SET_COMPARE_B(val)		(OCR3B = (val))
  #define CAPTURE_INTERRUPT		TIMER3_CAPT_vect
  #define COMPARE_A_INTERRUPT		TIMER3_COMPA_vect
  #define COMPARE_B_INTERRUPT		TIMER3_COMPB_vect


#elif defined(ALTSS_USE_TIMER4)
  #define CONFIG_TIMER_NOPRESCALE()	(TIMSK4 = 0, TCCR4A = 0, TCCR4B = (1<<ICNC4) | (1<<CS40))
  #define CONFIG_TIMER_PRESCALE_8()	(TIMSK4 = 0, TCCR4A = 0, TCCR4B = (1<<ICNC4) | (1<<CS41))
  #define CONFIG_TIMER_PRESCALE_256()	(TIMSK4 = 0, TCCR4A = 0, TCCR4B = (1<<ICNC4) | (1<<CS42))
  #define CONFIG_MATCH_NORMAL()		(TCCR4A = TCCR4A & ~((1<<COM4A1) | (1<<COM4A0)))
  #define CONFIG_MATCH_TOGGLE()		(TCCR4A = (TCCR4A & ~(1<<COM4A1)) | (1<<COM4A0))
  #define CONFIG_MATCH_CLEAR()		(TCCR4A = (TCCR4A | (1<<COM4A1)) & ~(1<<COM4A0))
  #define CONFIG_MATCH_SET()		(TCCR4A = TCCR4A | ((1<<COM4A1) | (1<<COM4A0)))
  #define CONFIG_CAPTURE_FALLING_EDGE()	(TCCR4B &= ~(1<<ICES4))
  #define CONFIG_CAPTURE_RISING_EDGE()	(TCCR4B |= (1<<ICES4))
  #define ENABLE_INT_INPUT_CAPTURE()	(TIFR4 = (1<<ICF4), TIMSK4 = (1<<ICIE4))
  #define ENABLE_INT_COMPARE_A()	(TIFR4 = (1<<OCF4A), TIMSK4 |= (1<<OCIE4A))
  #define ENABLE_INT_COMPARE_B()	(TIFR4 = (1<<OCF4B), TIMSK4 |= (1<<OCIE4B))
  #define DISABLE_INT_INPUT_CAPTURE()	(TIMSK4 &= ~(1<<ICIE4))
  #define DISABLE_INT_COMPARE_A()	(TIMSK4 &= ~(1<<OCIE4A))
  #define DISABLE_INT_COMPARE_B()	(TIMSK4 &= ~(1<<OCIE4B))
  #define GET_TIMER_COUNT()		(TCNT4)
  #define GET_INPUT_CAPTURE()		(ICR4)
  #define GET_COMPARE_A()		(OCR4A)
  #define GET_COMPARE_B()		(OCR4B)
  #define SET_COMPARE_A(val)		(OCR4A = (val))
  #define SET_COMPARE_B(val)		(OCR4B = (val))
  #define CAPTURE_INTERRUPT		TIMER4_CAPT_vect
  #define COMPARE_A_INTERRUPT		TIMER4_COMPA_vect
  #define COMPARE_B_INTERRUPT		TIMER4_COMPB_vect


#elif defined(ALTSS_USE_TIMER5)
  #define CONFIG_TIMER_NOPRESCALE()	(TIMSK5 = 0, TCCR5A = 0, TCCR5B = (1<<ICNC5) | (1<<CS50))
  #define CONFIG_TIMER_PRESCALE_8()	(TIMSK5 = 0, TCCR5A = 0, TCCR5B = (1<<ICNC5) | (1<<CS51))
  #define CONFIG_TIMER_PRESCALE_256()	(TIMSK5 = 0, TCCR5A = 0, TCCR5B = (1<<ICNC5) | (1<<CS52))
  #define CONFIG_MATCH_NORMAL()		(TCCR5A = TCCR5A & ~((1<<COM5A1) | (1<<COM5A0)))
  #define CONFIG_MATCH_TOGGLE()		(TCCR5A = (TCCR5A & ~(1<<COM5A1)) | (1<<COM5A0))
  #define CONFIG_MATCH_CLEAR()		(TCCR5A = (TCCR5A | (1<<COM5A1)) & ~(1<<COM5A0))
  #define CONFIG_MATCH_SET()		(TCCR5A = TCCR5A | ((1<<COM5A1) | (1<<COM5A0)))
  #define CONFIG_CAPTURE_FALLING_EDGE()	(TCCR5B &= ~(1<<ICES5))
  #define CONFIG_CAPTURE_RISING_EDGE()	(TCCR5B |= (1<<ICES5))
  #define ENABLE_INT_INPUT_CAPTURE()	(TIFR5 = (1<<ICF5), TIMSK5 = (1<<ICIE5))
  #define ENABLE_INT_COMPARE_A()	(TIFR5 = (1<<OCF5A), TIMSK5 |= (1<<OCIE5A))
  #define ENABLE_INT_COMPARE_B()	(TIFR5 = (1<<OCF5B), TIMSK5 |= (1<<OCIE5B))
  #define DISABLE_INT_INPUT_CAPTURE()	(TIMSK5 &= ~(1<<ICIE5))
  #define DISABLE_INT_COMPARE_A()	(TIMSK5 &= ~(1<<OCIE5A))
  #define DISABLE_INT_COMPARE_B()	(TIMSK5 &= ~(1<<OCIE5B))
  #define GET_TIMER_COUNT()		(TCNT5)
  #define GET_INPUT_CAPTURE()		(ICR5)
  #define GET_COMPARE_A()		(OCR5A)
  #define GET_COMPARE_B()		(OCR5B)
  #define SET_COMPARE_A(val)		(OCR5A = (val))
  #define SET_COMPARE_B(val)		(OCR5B = (val))
  #define CAPTURE_INTERRUPT		TIMER5_CAPT_vect
  #define COMPARE_A_INTERRUPT		TIMER5_COMPA_vect
  #define COMPARE_B_INTERRUPT		TIMER5_COMPB_vect


#elif defined(ALTSS_USE_FTM0)
  // CH5 = input capture (input, pin 20)
  // CH6 = compare a     (output, pin 21)
  // CH0 = compare b     (input timeout)
  #define CONFIG_TIMER_NOPRESCALE()	FTM0_SC = 0; FTM0_CNT = 0; FTM0_MOD = 0xFFFF; \
					FTM0_SC = FTM_SC_CLKS(1) | FTM_SC_PS(0); \
					digitalWriteFast(21, HIGH); \
					NVIC_SET_PRIORITY(IRQ_FTM0, 48); \
					FTM0_C0SC = 0x18; \
					NVIC_ENABLE_IRQ(IRQ_FTM0);
  #define CONFIG_TIMER_PRESCALE_8()	FTM0_SC = 0; FTM0_CNT = 0; FTM0_MOD = 0xFFFF; \
					FTM0_SC = FTM_SC_CLKS(1) | FTM_SC_PS(3); \
					digitalWriteFast(21, HIGH); \
					NVIC_SET_PRIORITY(IRQ_FTM0, 48); \
					FTM0_C0SC = 0x18; \
					NVIC_ENABLE_IRQ(IRQ_FTM0);
  #define CONFIG_TIMER_PRESCALE_128()	FTM0_SC = 0; FTM0_CNT = 0; FTM0_MOD = 0xFFFF; \
					FTM0_SC = FTM_SC_CLKS(1) | FTM_SC_PS(7); \
					digitalWriteFast(21, HIGH); \
					NVIC_SET_PRIORITY(IRQ_FTM0, 48); \
					FTM0_C0SC = 0x18; \
					NVIC_ENABLE_IRQ(IRQ_FTM0);
  #define CONFIG_MATCH_NORMAL()		(FTM0_C6SC = 0)
  #define CONFIG_MATCH_TOGGLE()		(FTM0_C6SC = (FTM0_C6SC & 0xC3) | 0x14)
  #define CONFIG_MATCH_CLEAR()		(FTM0_C6SC = (FTM0_C6SC & 0xC3) | 0x18)
  #define CONFIG_MATCH_SET()		(FTM0_C6SC = (FTM0_C6SC & 0xC3) | 0x1C)
  #define CONFIG_CAPTURE_FALLING_EDGE()	(FTM0_C5SC = (FTM0_C5SC & 0xC3) | 0x08)
  #define CONFIG_CAPTURE_RISING_EDGE()	(FTM0_C5SC = (FTM0_C5SC & 0xC3) | 0x04)
  #define ENABLE_INT_INPUT_CAPTURE()	FTM0_C5SC = 0x48; \
					CORE_PIN20_CONFIG = PORT_PCR_MUX(4)|PORT_PCR_PE|PORT_PCR_PS
  #define ENABLE_INT_COMPARE_A()	FTM0_C6SC |= 0x40; \
					CORE_PIN21_CONFIG = PORT_PCR_MUX(4)|PORT_PCR_DSE|PORT_PCR_SRE
  #define ENABLE_INT_COMPARE_B()	(FTM0_C0SC = 0x58)
  #define DISABLE_INT_INPUT_CAPTURE()	FTM0_C5SC &= ~0x40; \
					CORE_PIN20_CONFIG = PORT_PCR_MUX(1)|PORT_PCR_PE|PORT_PCR_PS
  #define DISABLE_INT_COMPARE_A()	FTM0_C6SC &= ~0x40; \
					CORE_PIN21_CONFIG = PORT_PCR_MUX(1)|PORT_PCR_DSE|PORT_PCR_SRE; \
					digitalWriteFast(21, HIGH)
  #define DISABLE_INT_COMPARE_B()	(FTM0_C0SC &= ~0x40)
  #define GET_TIMER_COUNT()		(FTM0_CNT)
  #define GET_INPUT_CAPTURE()		(FTM0_C5V)
  #define GET_COMPARE_A()		(FTM0_C6V)
  #define GET_COMPARE_B()		(FTM0_C0V)
  #define SET_COMPARE_A(val)		(FTM0_C6V = val)
  #define SET_COMPARE_B(val)		if (FTM0_C0SC & FTM_CSC_CHF) FTM0_C0SC = 0x18; \
					do { FTM0_C0V = (val); } while (FTM0_C0V != (val));
  #define CAPTURE_INTERRUPT		altss_capture_interrupt
  #define COMPARE_A_INTERRUPT		altss_compare_a_interrupt
  #define COMPARE_B_INTERRUPT		altss_compare_b_interrupt
  #ifdef ISR
  #undef ISR
  #endif
  #define ISR(f) static void f (void)


#endif
