188 lines
9.8 KiB
C
188 lines
9.8 KiB
C
/* An Alternative Software Serial Library
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* http://www.pjrc.com/teensy/td_libs_AltSoftSerial.html
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* Copyright (c) 2014 PJRC.COM, LLC, Paul Stoffregen, paul@pjrc.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if defined(ALTSS_USE_TIMER1)
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#define CONFIG_TIMER_NOPRESCALE() (TIMSK1 = 0, TCCR1A = 0, TCCR1B = (1<<ICNC1) | (1<<CS10))
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#define CONFIG_TIMER_PRESCALE_8() (TIMSK1 = 0, TCCR1A = 0, TCCR1B = (1<<ICNC1) | (1<<CS11))
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#define CONFIG_TIMER_PRESCALE_256() (TIMSK1 = 0, TCCR1A = 0, TCCR1B = (1<<ICNC1) | (1<<CS12))
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#define CONFIG_MATCH_NORMAL() (TCCR1A = TCCR1A & ~((1<<COM1A1) | (1<<COM1A0)))
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#define CONFIG_MATCH_TOGGLE() (TCCR1A = (TCCR1A & ~(1<<COM1A1)) | (1<<COM1A0))
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#define CONFIG_MATCH_CLEAR() (TCCR1A = (TCCR1A | (1<<COM1A1)) & ~(1<<COM1A0))
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#define CONFIG_MATCH_SET() (TCCR1A = TCCR1A | ((1<<COM1A1) | (1<<COM1A0)))
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#define CONFIG_CAPTURE_FALLING_EDGE() (TCCR1B &= ~(1<<ICES1))
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#define CONFIG_CAPTURE_RISING_EDGE() (TCCR1B |= (1<<ICES1))
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#define ENABLE_INT_INPUT_CAPTURE() (TIFR1 = (1<<ICF1), TIMSK1 = (1<<ICIE1))
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#define ENABLE_INT_COMPARE_A() (TIFR1 = (1<<OCF1A), TIMSK1 |= (1<<OCIE1A))
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#define ENABLE_INT_COMPARE_B() (TIFR1 = (1<<OCF1B), TIMSK1 |= (1<<OCIE1B))
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#define DISABLE_INT_INPUT_CAPTURE() (TIMSK1 &= ~(1<<ICIE1))
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#define DISABLE_INT_COMPARE_A() (TIMSK1 &= ~(1<<OCIE1A))
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#define DISABLE_INT_COMPARE_B() (TIMSK1 &= ~(1<<OCIE1B))
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#define GET_TIMER_COUNT() (TCNT1)
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#define GET_INPUT_CAPTURE() (ICR1)
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#define GET_COMPARE_A() (OCR1A)
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#define GET_COMPARE_B() (OCR1B)
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#define SET_COMPARE_A(val) (OCR1A = (val))
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#define SET_COMPARE_B(val) (OCR1B = (val))
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#define CAPTURE_INTERRUPT TIMER1_CAPT_vect
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#define COMPARE_A_INTERRUPT TIMER1_COMPA_vect
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#define COMPARE_B_INTERRUPT TIMER1_COMPB_vect
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#elif defined(ALTSS_USE_TIMER3)
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#define CONFIG_TIMER_NOPRESCALE() (TIMSK3 = 0, TCCR3A = 0, TCCR3B = (1<<ICNC3) | (1<<CS30))
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#define CONFIG_TIMER_PRESCALE_8() (TIMSK3 = 0, TCCR3A = 0, TCCR3B = (1<<ICNC3) | (1<<CS31))
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#define CONFIG_TIMER_PRESCALE_256() (TIMSK3 = 0, TCCR3A = 0, TCCR3B = (1<<ICNC3) | (1<<CS32))
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#define CONFIG_MATCH_NORMAL() (TCCR3A = TCCR3A & ~((1<<COM3A1) | (1<<COM3A0)))
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#define CONFIG_MATCH_TOGGLE() (TCCR3A = (TCCR3A & ~(1<<COM3A1)) | (1<<COM3A0))
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#define CONFIG_MATCH_CLEAR() (TCCR3A = (TCCR3A | (1<<COM3A1)) & ~(1<<COM3A0))
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#define CONFIG_MATCH_SET() (TCCR3A = TCCR3A | ((1<<COM3A1) | (1<<COM3A0)))
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#define CONFIG_CAPTURE_FALLING_EDGE() (TCCR3B &= ~(1<<ICES3))
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#define CONFIG_CAPTURE_RISING_EDGE() (TCCR3B |= (1<<ICES3))
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#define ENABLE_INT_INPUT_CAPTURE() (TIFR3 = (1<<ICF3), TIMSK3 = (1<<ICIE3))
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#define ENABLE_INT_COMPARE_A() (TIFR3 = (1<<OCF3A), TIMSK3 |= (1<<OCIE3A))
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#define ENABLE_INT_COMPARE_B() (TIFR3 = (1<<OCF3B), TIMSK3 |= (1<<OCIE3B))
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#define DISABLE_INT_INPUT_CAPTURE() (TIMSK3 &= ~(1<<ICIE3))
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#define DISABLE_INT_COMPARE_A() (TIMSK3 &= ~(1<<OCIE3A))
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#define DISABLE_INT_COMPARE_B() (TIMSK3 &= ~(1<<OCIE3B))
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#define GET_TIMER_COUNT() (TCNT3)
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#define GET_INPUT_CAPTURE() (ICR3)
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#define GET_COMPARE_A() (OCR3A)
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#define GET_COMPARE_B() (OCR3B)
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#define SET_COMPARE_A(val) (OCR3A = (val))
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#define SET_COMPARE_B(val) (OCR3B = (val))
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#define CAPTURE_INTERRUPT TIMER3_CAPT_vect
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#define COMPARE_A_INTERRUPT TIMER3_COMPA_vect
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#define COMPARE_B_INTERRUPT TIMER3_COMPB_vect
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#elif defined(ALTSS_USE_TIMER4)
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#define CONFIG_TIMER_NOPRESCALE() (TIMSK4 = 0, TCCR4A = 0, TCCR4B = (1<<ICNC4) | (1<<CS40))
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#define CONFIG_TIMER_PRESCALE_8() (TIMSK4 = 0, TCCR4A = 0, TCCR4B = (1<<ICNC4) | (1<<CS41))
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#define CONFIG_TIMER_PRESCALE_256() (TIMSK4 = 0, TCCR4A = 0, TCCR4B = (1<<ICNC4) | (1<<CS42))
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#define CONFIG_MATCH_NORMAL() (TCCR4A = TCCR4A & ~((1<<COM4A1) | (1<<COM4A0)))
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#define CONFIG_MATCH_TOGGLE() (TCCR4A = (TCCR4A & ~(1<<COM4A1)) | (1<<COM4A0))
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#define CONFIG_MATCH_CLEAR() (TCCR4A = (TCCR4A | (1<<COM4A1)) & ~(1<<COM4A0))
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#define CONFIG_MATCH_SET() (TCCR4A = TCCR4A | ((1<<COM4A1) | (1<<COM4A0)))
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#define CONFIG_CAPTURE_FALLING_EDGE() (TCCR4B &= ~(1<<ICES4))
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#define CONFIG_CAPTURE_RISING_EDGE() (TCCR4B |= (1<<ICES4))
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#define ENABLE_INT_INPUT_CAPTURE() (TIFR4 = (1<<ICF4), TIMSK4 = (1<<ICIE4))
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#define ENABLE_INT_COMPARE_A() (TIFR4 = (1<<OCF4A), TIMSK4 |= (1<<OCIE4A))
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#define ENABLE_INT_COMPARE_B() (TIFR4 = (1<<OCF4B), TIMSK4 |= (1<<OCIE4B))
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#define DISABLE_INT_INPUT_CAPTURE() (TIMSK4 &= ~(1<<ICIE4))
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#define DISABLE_INT_COMPARE_A() (TIMSK4 &= ~(1<<OCIE4A))
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#define DISABLE_INT_COMPARE_B() (TIMSK4 &= ~(1<<OCIE4B))
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#define GET_TIMER_COUNT() (TCNT4)
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#define GET_INPUT_CAPTURE() (ICR4)
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#define GET_COMPARE_A() (OCR4A)
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#define GET_COMPARE_B() (OCR4B)
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#define SET_COMPARE_A(val) (OCR4A = (val))
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#define SET_COMPARE_B(val) (OCR4B = (val))
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#define CAPTURE_INTERRUPT TIMER4_CAPT_vect
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#define COMPARE_A_INTERRUPT TIMER4_COMPA_vect
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#define COMPARE_B_INTERRUPT TIMER4_COMPB_vect
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#elif defined(ALTSS_USE_TIMER5)
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#define CONFIG_TIMER_NOPRESCALE() (TIMSK5 = 0, TCCR5A = 0, TCCR5B = (1<<ICNC5) | (1<<CS50))
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#define CONFIG_TIMER_PRESCALE_8() (TIMSK5 = 0, TCCR5A = 0, TCCR5B = (1<<ICNC5) | (1<<CS51))
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#define CONFIG_TIMER_PRESCALE_256() (TIMSK5 = 0, TCCR5A = 0, TCCR5B = (1<<ICNC5) | (1<<CS52))
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#define CONFIG_MATCH_NORMAL() (TCCR5A = TCCR5A & ~((1<<COM5A1) | (1<<COM5A0)))
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#define CONFIG_MATCH_TOGGLE() (TCCR5A = (TCCR5A & ~(1<<COM5A1)) | (1<<COM5A0))
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#define CONFIG_MATCH_CLEAR() (TCCR5A = (TCCR5A | (1<<COM5A1)) & ~(1<<COM5A0))
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#define CONFIG_MATCH_SET() (TCCR5A = TCCR5A | ((1<<COM5A1) | (1<<COM5A0)))
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#define CONFIG_CAPTURE_FALLING_EDGE() (TCCR5B &= ~(1<<ICES5))
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#define CONFIG_CAPTURE_RISING_EDGE() (TCCR5B |= (1<<ICES5))
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#define ENABLE_INT_INPUT_CAPTURE() (TIFR5 = (1<<ICF5), TIMSK5 = (1<<ICIE5))
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#define ENABLE_INT_COMPARE_A() (TIFR5 = (1<<OCF5A), TIMSK5 |= (1<<OCIE5A))
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#define ENABLE_INT_COMPARE_B() (TIFR5 = (1<<OCF5B), TIMSK5 |= (1<<OCIE5B))
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#define DISABLE_INT_INPUT_CAPTURE() (TIMSK5 &= ~(1<<ICIE5))
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#define DISABLE_INT_COMPARE_A() (TIMSK5 &= ~(1<<OCIE5A))
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#define DISABLE_INT_COMPARE_B() (TIMSK5 &= ~(1<<OCIE5B))
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#define GET_TIMER_COUNT() (TCNT5)
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#define GET_INPUT_CAPTURE() (ICR5)
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#define GET_COMPARE_A() (OCR5A)
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#define GET_COMPARE_B() (OCR5B)
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#define SET_COMPARE_A(val) (OCR5A = (val))
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#define SET_COMPARE_B(val) (OCR5B = (val))
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#define CAPTURE_INTERRUPT TIMER5_CAPT_vect
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#define COMPARE_A_INTERRUPT TIMER5_COMPA_vect
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#define COMPARE_B_INTERRUPT TIMER5_COMPB_vect
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#elif defined(ALTSS_USE_FTM0)
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// CH5 = input capture (input, pin 20)
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// CH6 = compare a (output, pin 21)
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// CH0 = compare b (input timeout)
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#define CONFIG_TIMER_NOPRESCALE() FTM0_SC = 0; FTM0_CNT = 0; FTM0_MOD = 0xFFFF; \
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FTM0_SC = FTM_SC_CLKS(1) | FTM_SC_PS(0); \
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digitalWriteFast(21, HIGH); \
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NVIC_SET_PRIORITY(IRQ_FTM0, 48); \
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FTM0_C0SC = 0x18; \
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NVIC_ENABLE_IRQ(IRQ_FTM0);
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#define CONFIG_TIMER_PRESCALE_8() FTM0_SC = 0; FTM0_CNT = 0; FTM0_MOD = 0xFFFF; \
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FTM0_SC = FTM_SC_CLKS(1) | FTM_SC_PS(3); \
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digitalWriteFast(21, HIGH); \
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NVIC_SET_PRIORITY(IRQ_FTM0, 48); \
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FTM0_C0SC = 0x18; \
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NVIC_ENABLE_IRQ(IRQ_FTM0);
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#define CONFIG_TIMER_PRESCALE_128() FTM0_SC = 0; FTM0_CNT = 0; FTM0_MOD = 0xFFFF; \
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FTM0_SC = FTM_SC_CLKS(1) | FTM_SC_PS(7); \
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digitalWriteFast(21, HIGH); \
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NVIC_SET_PRIORITY(IRQ_FTM0, 48); \
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FTM0_C0SC = 0x18; \
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NVIC_ENABLE_IRQ(IRQ_FTM0);
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#define CONFIG_MATCH_NORMAL() (FTM0_C6SC = 0)
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#define CONFIG_MATCH_TOGGLE() (FTM0_C6SC = (FTM0_C6SC & 0xC3) | 0x14)
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#define CONFIG_MATCH_CLEAR() (FTM0_C6SC = (FTM0_C6SC & 0xC3) | 0x18)
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#define CONFIG_MATCH_SET() (FTM0_C6SC = (FTM0_C6SC & 0xC3) | 0x1C)
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#define CONFIG_CAPTURE_FALLING_EDGE() (FTM0_C5SC = (FTM0_C5SC & 0xC3) | 0x08)
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#define CONFIG_CAPTURE_RISING_EDGE() (FTM0_C5SC = (FTM0_C5SC & 0xC3) | 0x04)
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#define ENABLE_INT_INPUT_CAPTURE() FTM0_C5SC = 0x48; \
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CORE_PIN20_CONFIG = PORT_PCR_MUX(4)|PORT_PCR_PE|PORT_PCR_PS
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#define ENABLE_INT_COMPARE_A() FTM0_C6SC |= 0x40; \
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CORE_PIN21_CONFIG = PORT_PCR_MUX(4)|PORT_PCR_DSE|PORT_PCR_SRE
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#define ENABLE_INT_COMPARE_B() (FTM0_C0SC = 0x58)
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#define DISABLE_INT_INPUT_CAPTURE() FTM0_C5SC &= ~0x40; \
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CORE_PIN20_CONFIG = PORT_PCR_MUX(1)|PORT_PCR_PE|PORT_PCR_PS
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#define DISABLE_INT_COMPARE_A() FTM0_C6SC &= ~0x40; \
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CORE_PIN21_CONFIG = PORT_PCR_MUX(1)|PORT_PCR_DSE|PORT_PCR_SRE; \
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digitalWriteFast(21, HIGH)
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#define DISABLE_INT_COMPARE_B() (FTM0_C0SC &= ~0x40)
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#define GET_TIMER_COUNT() (FTM0_CNT)
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#define GET_INPUT_CAPTURE() (FTM0_C5V)
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#define GET_COMPARE_A() (FTM0_C6V)
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#define GET_COMPARE_B() (FTM0_C0V)
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#define SET_COMPARE_A(val) (FTM0_C6V = val)
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#define SET_COMPARE_B(val) if (FTM0_C0SC & FTM_CSC_CHF) FTM0_C0SC = 0x18; \
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do { FTM0_C0V = (val); } while (FTM0_C0V != (val));
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#define CAPTURE_INTERRUPT altss_capture_interrupt
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#define COMPARE_A_INTERRUPT altss_compare_a_interrupt
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#define COMPARE_B_INTERRUPT altss_compare_b_interrupt
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#ifdef ISR
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#undef ISR
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#endif
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#define ISR(f) static void f (void)
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#endif
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