fg004_a1/zero_cross_detection.h

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