main.c

#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/timers.h"
#include "esp_system.h"
#include "esp_spi_flash.h"
#include "driver/gpio.h"
#include "esp_err.h"

#include "power_monitor/power_monitor.h"
#include "esp_log.h"

static const char* TAG = "main";

void app_main()
{
    ESP_LOGI(TAG, "System boot!");

    // Get chip information and output it
    esp_chip_info_t chip_info;
    esp_chip_info(&chip_info);
    ESP_LOGI(TAG, "ESP32 with %d CPU cores. Revision %d.",
            chip_info.cores,
            chip_info.revision);

    // Flash information
    ESP_LOGI(TAG, "%dMB %s flash\n", spi_flash_get_chip_size() / (1024 * 1024),
            (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
    fflush(stdout);

    esp_err_t err = ESP_OK;
    ESP_LOGI(TAG, "Initializing systems");

    // Install gpio isr service
    gpio_install_isr_service(ESP_INTR_FLAG_IRAM);

    // Give some time to circuits to power-up
    vTaskDelay(pdMS_TO_TICKS(500));

    err = power_monitor_init();

    ESP_LOGI(TAG, "RAM left %d bytes", esp_get_free_heap_size());

    if(err == ESP_OK)
    {
        ESP_LOGI(TAG, "Systems ready!");
    }
    else
    {
        ESP_LOGE(TAG, "System init failed!");
    }
}