mirror of
https://github.com/DarkFlippers/unleashed-firmware.git
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c64052b491
* iButton: Metakom emulation fix * iButton: do not threat NVIC * iButton: use proper GPIO from resources Co-authored-by: あく <alleteam@gmail.com>
85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
#include "pulse-sequencer.h"
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#include <furi.h>
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#include <callback-connector.h>
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#include <furi-hal-resources.h>
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void PulseSequencer::set_periods(
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uint32_t* _periods,
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uint16_t _periods_count,
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bool _pin_start_state) {
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periods = _periods;
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periods_count = _periods_count;
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pin_start_state = _pin_start_state;
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}
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void PulseSequencer::start() {
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callback_pointer = cbc::obtain_connector(this, &PulseSequencer::timer_elapsed_callback);
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api_interrupt_add(callback_pointer, InterruptTypeTimerUpdate, this);
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period_index = 1;
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init_timer(periods[period_index]);
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pin_state = pin_start_state;
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hal_gpio_write(&ibutton_gpio, pin_state);
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pin_state = !pin_state;
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HAL_TIM_Base_Start_IT(&htim1);
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}
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void PulseSequencer::stop() {
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HAL_TIM_Base_Stop_IT(&htim1);
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api_interrupt_remove(callback_pointer, InterruptTypeTimerUpdate);
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deinit_timer();
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}
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PulseSequencer::~PulseSequencer() {
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stop();
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}
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void PulseSequencer::init_timer(uint32_t period) {
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TIM_ClockConfigTypeDef sClockSourceConfig = {0};
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htim1.Instance = TIM1;
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htim1.Init.Prescaler = 0;
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htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
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htim1.Init.Period = period;
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htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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htim1.Init.RepetitionCounter = 0;
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htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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if(HAL_TIM_Base_Init(&htim1) != HAL_OK) {
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Error_Handler();
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}
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sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
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if(HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK) {
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Error_Handler();
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}
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hal_gpio_init(&ibutton_gpio, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
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}
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void PulseSequencer::deinit_timer() {
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}
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void PulseSequencer::timer_elapsed_callback(void* hw, void* context) {
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PulseSequencer* _this = static_cast<PulseSequencer*>(context);
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TIM_HandleTypeDef* htim = static_cast<TIM_HandleTypeDef*>(hw);
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if(htim->Instance == TIM1) {
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htim->Instance->ARR = _this->periods[_this->period_index];
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if(_this->period_index == 0) {
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_this->pin_state = _this->pin_start_state;
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} else {
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_this->pin_state = !_this->pin_state;
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}
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hal_gpio_write(&ibutton_gpio, _this->pin_state);
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_this->period_index++;
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if(_this->period_index == _this->periods_count) {
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_this->period_index = 0;
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}
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}
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}
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