mch2022-template-app/components/i2c-bme680/bme680.c

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2022-05-18 21:28:00 +00:00
/**
* Copyright (c) 2022 Nicolai Electronics
*
* SPDX-License-Identifier: MIT
*/
#include <sdkconfig.h>
#include <esp_log.h>
#include <driver/gpio.h>
#include <freertos/FreeRTOS.h>
#include <freertos/semphr.h>
#include <freertos/task.h>
#include "bme680.h"
#include "managed_i2c.h"
static const char *TAG = "BME680";
esp_err_t bme680_check_id(BME680* device) {
uint8_t chip_id;
esp_err_t res = i2c_read_reg(device->i2c_bus, device->i2c_address, BME680_REG_CHIP_ID, &chip_id, 1);
if (res != ESP_OK) return res;
if (chip_id != BME680_CHIP_ID) {
ESP_LOGE(TAG, "Unexpected chip id value 0x%02X, expected 0x%02X", chip_id, BME680_CHIP_ID);
return ESP_FAIL;
}
return ESP_OK;
}
esp_err_t bme680_reset(BME680* device) {
uint8_t value = 0xFF;
esp_err_t res = i2c_write_reg_n(device->i2c_bus, device->i2c_address, BME680_REG_RESET, &value, 1);
if (res != ESP_OK) return res;
return ESP_OK;
}
esp_err_t bme680_init(BME680* device) {
esp_err_t res = bme680_reset(device);
if (res != ESP_OK) return res;
vTaskDelay(100 / portTICK_PERIOD_MS);
res = bme680_check_id(device);
if (res != ESP_OK) return res;
return res;
}
esp_err_t bme680_deinit(BME680* device) {
return bme680_reset(device);
}