esp32-alarm-clock/main/wifi_management_task.c

/*
 * SPDX-FileCopyrightText: 2023 Helmut Pozimski <helmut@pozimski.eu>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 */

#include <esp_log.h>
#include <freertos/FreeRTOS.h>
#include <freertos/event_groups.h>
#include <apps/esp_sntp.h>

#include "wifi.h"
#include "ds3231.h"
#include "time_conversion.h"

#define TAG "wifi_management_task"

#define SECONDS_PER_DAY 86400

static uint32_t calculate_current_second(struct tm* local_time) {
	return local_time->tm_hour * 60 * 60 + local_time->tm_min * 60 + local_time->tm_sec;
}

static uint32_t determine_sleep_seconds(struct tm* local_time) {
	uint32_t current_second = calculate_current_second(local_time);
	uint32_t reference_second;
	if (local_time->tm_hour >= 22) {
		reference_second = (SECONDS_PER_DAY - current_second) + 6 * 60 * 60;
	} else {
		reference_second = (22 * 60 * 60) -  current_second;
	}
	return reference_second;
}

void wifi_management_task(void *pvParameters) {
	struct tm current_time;
	uint8_t* wifi_enabled_flag = (uint8_t*) pvParameters;
	
	while(1) {
		ESP_LOGI(TAG, "wifi_managent_task is executed");
		struct tm* local_time;
		ds3231_read_date_time(&current_time);
		local_time = convert_to_local(&current_time);
		if (local_time->tm_hour >= 22 && *wifi_enabled_flag) {
			ESP_LOGI(TAG, "Stopping wifi");
			wifi_stop();
			*wifi_enabled_flag = 0;
		} else if (local_time->tm_hour >= 6 && !*wifi_enabled_flag) {
			ESP_LOGI(TAG, "Starting wifi");
			wifi_start();	
			*wifi_enabled_flag = 1;	
			sntp_restart();
		}
		uint32_t sleep_seconds = determine_sleep_seconds(local_time);
		ESP_LOGI(TAG, "Sleeping for %ld seconds", sleep_seconds);
		vTaskDelay(sleep_seconds * 1000 / portTICK_PERIOD_MS);
	}
	vTaskDelete( NULL ); 
}