HomeEnergyMeter/main/kWhCounter.c

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "driver/ledc.h"
#include "driver/pcnt.h"
#include "esp_attr.h"
#include "esp_log.h"

#include "kWhCounter.h"

uint32_t kWh_cnt = 0;

#ifdef ENABLE_KWH_COUNTER

void counterControlTask(void *pvParameters) {

    ESP_LOGI("kWhCounter", "counterControlTask starting. Core:%d",xPortGetCoreID());

    uint32_t logCnt = 0;
    
    uint32_t state = 0;

    TickType_t vLastWakeTime = xTaskGetTickCount();
    const TickType_t xFreq = 100 / portTICK_PERIOD_MS;

    while( 1 ) {

        for(uint8_t i=10; i>0; i-- ) {

            vTaskDelayUntil( &vLastWakeTime, xFreq );

            if( gpio_get_level(KWH_COUNTER_INPUT_IO) == 1 ) state++;
        }

        if( state > 0 ) kWh_cnt++;

        if( ++logCnt == 10 ) {
            ESP_LOGI("kWhCounter", "Measure. Pin: %u  Tot:%u", state, kWh_cnt);
            logCnt = 0;
        }

        state = 0;
    }

}




void kWhCounter_init()
{
    ESP_LOGI("kWhCounter", "kWhCounter_init()");

    gpio_set_direction(KWH_COUNTER_INPUT_IO, GPIO_MODE_INPUT);

    xTaskCreate(counterControlTask, "counterControlTask", 1024*10, NULL, 2, NULL);
}

#endif