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### Releases v1.2.0 1. Add STM32_TimerInterrupt Library
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| Original file line number | Diff line number | Diff line change |
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| /**************************************************************************************************************************** | ||
| STM32TimerInterrupt.h | ||
| For STM32 boards | ||
| Written by Khoi Hoang | ||
| Now even you use all these new 16 ISR-based timers,with their maximum interval practically unlimited (limited only by | ||
| unsigned long miliseconds), you just consume only one Hardware timer and avoid conflicting with other cores' tasks. | ||
| The accuracy is nearly perfect compared to software timers. The most important feature is they're ISR-based timers | ||
| Therefore, their executions are not blocked by bad-behaving functions / tasks. | ||
| This important feature is absolutely necessary for mission-critical tasks. | ||
| Based on SimpleTimer - A timer library for Arduino. | ||
| Author: [email protected] | ||
| Copyright (c) 2010 OTTOTECNICA Italy | ||
| Based on BlynkTimer.h | ||
| Author: Volodymyr Shymanskyy | ||
| Built by Khoi Hoang https://github.com/khoih-prog/TimerInterrupt_Generic | ||
| Licensed under MIT license | ||
| Version: 1.2.0 | ||
| Version Modified By Date Comments | ||
| ------- ----------- ---------- ----------- | ||
| 1.1.0 K Hoang 10/11/2020 Initial Super-Library coding to merge all TimerInterrupt Libraries | ||
| 1.2.0 K Hoang 12/11/2020 Add STM32_TimerInterrupt Library | ||
| *****************************************************************************************************************************/ | ||
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| #pragma once | ||
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| #if !( defined(STM32F0) || defined(STM32F1) || defined(STM32F2) || defined(STM32F3) ||defined(STM32F4) || defined(STM32F7) || \ | ||
| defined(STM32L0) || defined(STM32L1) || defined(STM32L4) || defined(STM32H7) ||defined(STM32G0) || defined(STM32G4) || \ | ||
| defined(STM32WB) || defined(STM32MP1) ) | ||
| #error This code is designed to run on STM32F/L/H/G/WB/MP1 platform! Please check your Tools->Board setting. | ||
| #endif | ||
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| #ifndef TIMER_INTERRUPT_DEBUG | ||
| #define TIMER_INTERRUPT_DEBUG 0 | ||
| #endif | ||
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| class STM32TimerInterrupt; | ||
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| typedef STM32TimerInterrupt STM32Timer; | ||
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| typedef void (*timerCallback) (void); | ||
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| class STM32TimerInterrupt | ||
| { | ||
| private: | ||
| TIM_TypeDef* _timer; | ||
| HardwareTimer* _hwTimer = NULL; | ||
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| timerCallback _callback; // pointer to the callback function | ||
| float _frequency; // Timer frequency | ||
| uint32_t _timerCount; // count to activate timer | ||
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| public: | ||
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| STM32TimerInterrupt(TIM_TypeDef* timer) | ||
| { | ||
| _timer = timer; | ||
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| _hwTimer = new HardwareTimer(_timer); | ||
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| _callback = NULL; | ||
| }; | ||
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| ~STM32TimerInterrupt() | ||
| { | ||
| if (_hwTimer) | ||
| delete _hwTimer; | ||
| } | ||
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| // frequency (in hertz) and duration (in milliseconds). Duration = 0 or not specified => run indefinitely | ||
| // No params and duration now. To be addes in the future by adding similar functions here or to STM32-hal-timer.c | ||
| bool setFrequency(float frequency, timerCallback callback) | ||
| { | ||
| // select timer frequency is 1MHz for better accuracy. We don't use 16-bit prescaler for now. | ||
| // Will use later if very low frequency is needed. | ||
| _frequency = 1000000; | ||
| _timerCount = (uint32_t) _frequency / frequency; | ||
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| #if (TIMER_INTERRUPT_DEBUG > 0) | ||
| Serial.println("STM32TimerInterrupt: Timer Input Freq (Hz) = " + String(_hwTimer->getTimerClkFreq()) + ", _fre = " + String(_frequency) | ||
| + ", _count = " + String((uint32_t) (_timerCount))); | ||
| #endif | ||
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| _hwTimer->setCount(0, MICROSEC_FORMAT); | ||
| _hwTimer->setOverflow(_timerCount, MICROSEC_FORMAT); | ||
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| _hwTimer->attachInterrupt(callback); | ||
| _hwTimer->resume(); | ||
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| return true; | ||
| } | ||
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| // interval (in microseconds) and duration (in milliseconds). Duration = 0 or not specified => run indefinitely | ||
| // No params and duration now. To be addes in the future by adding similar functions here or to STM32-hal-timer.c | ||
| bool setInterval(unsigned long interval, timerCallback callback) | ||
| { | ||
| return setFrequency((float) (1000000.0f / interval), callback); | ||
| } | ||
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| bool attachInterrupt(float frequency, timerCallback callback) | ||
| { | ||
| return setFrequency(frequency, callback); | ||
| } | ||
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| // interval (in microseconds) and duration (in milliseconds). Duration = 0 or not specified => run indefinitely | ||
| // No params and duration now. To be addes in the future by adding similar functions here or to STM32-hal-timer.c | ||
| bool attachInterruptInterval(unsigned long interval, timerCallback callback) | ||
| { | ||
| return setFrequency( (float) ( 1000000.0f / interval), callback); | ||
| } | ||
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| void detachInterrupt() | ||
| { | ||
| _hwTimer->detachInterrupt(); | ||
| } | ||
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| void disableTimer(void) | ||
| { | ||
| //_hwTimer->detachInterrupt(); | ||
| _hwTimer->pause(); | ||
| } | ||
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| // Duration (in milliseconds). Duration = 0 or not specified => run indefinitely | ||
| void reattachInterrupt() | ||
| { | ||
| setFrequency(_frequency, _callback); | ||
| } | ||
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| // Duration (in milliseconds). Duration = 0 or not specified => run indefinitely | ||
| void enableTimer(void) | ||
| { | ||
| //setFrequency(_frequency, _callback); | ||
| _hwTimer->setCount(0, MICROSEC_FORMAT); | ||
| _hwTimer->resume(); | ||
| } | ||
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| // Just stop clock source, clear the count | ||
| void stopTimer(void) | ||
| { | ||
| _hwTimer->pause(); | ||
| _hwTimer->setCount(0, MICROSEC_FORMAT); | ||
| } | ||
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| // Just reconnect clock source, start current count from 0 | ||
| void restartTimer(void) | ||
| { | ||
| _hwTimer->setCount(0, MICROSEC_FORMAT); | ||
| _hwTimer->resume(); | ||
| } | ||
| }; // class STM32TimerInterrupt |
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