/*
 * SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: CC0-1.0
 */

#include <stdio.h>
#include <inttypes.h>
#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_chip_info.h"
#include "esp_flash.h"
#include "esp_system.h"
#include "i2c_bus.h"
#include "bme280.h"

#define I2C_MASTER_SCL_IO           22      /*!< GPIO number used for I2C master clock */
#define I2C_MASTER_SDA_IO           21      /*!< GPIO number used for I2C master data  */
#define I2C_MASTER_NUM              I2C_NUM_0                          /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
#define I2C_MASTER_FREQ_HZ          400000                     /*!< I2C master clock frequency */
#define I2C_MASTER_TX_BUF_DISABLE   0                          /*!< I2C master doesn't need buffer */
#define I2C_MASTER_RX_BUF_DISABLE   0                          /*!< I2C master doesn't need buffer */
#define I2C_MASTER_TIMEOUT_MS       1000
#define I2C_ACKS                    0x1
#define I2C_ACKM                    0x0
#define I2C_NOACKM                  0x1                         // I2C NACK value
#define I2C_WRITE_BIT               I2C_MASTER_WRITE
#define I2C_READ_BIT                I2C_MASTER_READ

#define BME280_SENSOR_ADDR                 0x76        /*!< Slave address of the MPU9250 sensor */

static bme280_handle_t sensor = NULL;
float temperature = 0.0f;



void app_main(void)
{
    printf("Hello world!\n");

    /* Print chip information */
    esp_chip_info_t chip_info;
    uint32_t flash_size;
    esp_chip_info(&chip_info);
    printf("This is %s chip with %d CPU core(s), %s%s%s%s, ",
           CONFIG_IDF_TARGET,
           chip_info.cores,
           (chip_info.features & CHIP_FEATURE_WIFI_BGN) ? "WiFi/" : "",
           (chip_info.features & CHIP_FEATURE_BT) ? "BT" : "",
           (chip_info.features & CHIP_FEATURE_BLE) ? "BLE" : "",
           (chip_info.features & CHIP_FEATURE_IEEE802154) ? ", 802.15.4 (Zigbee/Thread)" : "");

    unsigned major_rev = chip_info.revision / 100;
    unsigned minor_rev = chip_info.revision % 100;
    printf("silicon revision v%d.%d, ", major_rev, minor_rev);
    if(esp_flash_get_size(NULL, &flash_size) != ESP_OK) {
        printf("Get flash size failed");
        return;
    }

    printf("%" PRIu32 "MB %s flash\n", flash_size / (uint32_t)(1024 * 1024),
           (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");

    printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());

    //i2c_master_init();
    i2c_bus_handle_t i2c_bus = i2c_bus_create(I2C_MASTER_NUM, I2C_MASTER_SDA_IO, I2C_MASTER_SCL_IO, I2C_MASTER_FREQ_HZ);
    sensor = bme280_create(i2c_bus, BME280_SENSOR_ADDR);
    ESP_ERROR_CHECK(bme280_default_init(sensor));
    ESP_ERROR_CHECK(bme280_read_temperature(sensor, &temperature));

    for (int i = 10; i >= 0; i--) {
        printf("Restarting in %d seconds...\n", i);
        vTaskDelay(1000 / portTICK_PERIOD_MS);
    }
    printf("Restarting now.\n");
    fflush(stdout);
    esp_restart();
}