50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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/**
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* @file zero_cross_detection.h
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* @author Jake G
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* @date 16 June 2024
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* @brief File contains the zero cross detection functions
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*
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* This file holds all the code/functions needed to read the value of the AC
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* waveform. It uses the trigger value from the `config.h` file to evaluate the
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* state.
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*
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* This module depends on the ADC.h module to get readings from the ADC
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* hardware.
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*/
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#ifndef ZERO_CROSS_DETECTION
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#define ZERO_CROSS_DETECTION
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#include <stdint.h>
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#include <stdbool.h>
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/**
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* @brief Zero Cross Detection Setup
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*
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* Sets up the hardware to read the values coming from the AC input waveform.
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*
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*/
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void ZCD_Setup(void);
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//int ZCD_Setup(volatile uint8_t *ddrx, uint8_t *port, uint8_t pin);
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/**
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* @brief Checks if ZCD should trigger on value
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*
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* The function checks for a positive edge first using the ZCD_IsPositiveEdge
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* function. If a positive edge was found, then it takes an addition set of
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* samples and averages them; only triggering(returning true) in the case
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* that the average is higher than the previous sample.
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*/
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bool ZCD_IsTriggered(void);
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/**
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* @brief Function blocks execution until ZCD is triggered.
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*
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*/
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void ZCD_Poll(void);
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#endif //ZERO_CROSS_DETECTION
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