71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
//
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// Created by robtor on 10.01.23.
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//
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#ifndef FLOATPUMP_RELAYCHANNEL_H
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#define FLOATPUMP_RELAYCHANNEL_H
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#include "stm32f4xx_hal.h"
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namespace floatpump {
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namespace io {
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class RelayChannel {
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public:
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enum state {
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ON, OFF
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};
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RelayChannel(GPIO_TypeDef *gpio, uint16_t pin, bool inverted = false, state initial = state::OFF): m_gpio(gpio), m_gpio_pin(pin), m_inverted(inverted) {
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if(initial == state::ON)
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switchRelay(state::ON);
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};
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void switchRelay(state st) {
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uint32_t elapesd = HAL_GetTick() - m_lastTick;
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if(st == state::ON && m_state == state::OFF && getRemainingCooldown() == 0) {
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//Check if cooldown expired and enable Relay if true
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HAL_GPIO_WritePin(m_gpio, m_gpio_pin, (m_inverted) ? GPIO_PIN_RESET : GPIO_PIN_SET);
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m_state = state::ON;
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} else if(st == state::OFF && m_state == state::ON) {
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//Store last tick value when turning off
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//Always offer turning off!
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m_lastTick = HAL_GetTick();
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HAL_GPIO_WritePin(m_gpio, m_gpio_pin, (m_inverted) ? GPIO_PIN_SET : GPIO_PIN_RESET);
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m_state = state::OFF;
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}
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}
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void setCooldown(uint16_t ms) {
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m_cooldown = ms;
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}
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uint16_t getRemainingCooldown() {
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uint32_t elapsed = (HAL_GetTick() - m_lastTick);
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if(elapsed <= m_cooldown)
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return m_cooldown - (HAL_GetTick() - m_lastTick);
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else
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return 0;
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}
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private:
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GPIO_TypeDef *m_gpio;
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uint16_t m_gpio_pin;
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uint16_t m_cooldown = 0;
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uint32_t m_lastTick = 0;
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bool m_inverted = false;
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state m_state = state::OFF;
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};
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} // floatpump
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} // io
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#endif //FLOATPUMP_RELAYCHANNEL_H
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