components
└── esp_ccs811
    ├── CMakeLists.txt
    ├── README.md
    ├── LICENSE
    ├── idf_component.yml
    ├── library.json
    ├── documentation
    │   └── datasheets, etc.
    ├── include
    │   └── ccs811_version.h
    │   └── ccs811.h
    └── ccs811.c

#include <ccs811.h>

void i2c0_ccs811_task( void *pvParameters ) {
    // initialize the xLastWakeTime variable with the current time.
    TickType_t          last_wake_time   = xTaskGetTickCount ();
    //
    // initialize i2c device configuration
    ccs811_config_t dev_cfg          = I2C_CCS811_CONFIG_DEFAULT;
    ccs811_handle_t dev_hdl;
    //
    // init device
    ccs811_init(i2c0_bus_hdl, &dev_cfg, &dev_hdl);
    if (dev_hdl == NULL) {
        ESP_LOGE(APP_TAG, "ccs811 handle init failed");
        assert(dev_hdl);
    }
    //
    // task loop entry point
    for ( ;; ) {
        ESP_LOGI(APP_TAG, "######################## CCS811 - START #########################");
        //
        // handle sensor
        uint16_t eco2; uint16_t etvoc;
        esp_err_t result = ccs811_get_measurement(dev_hdl, &eco2, &etvoc);
        if(result != ESP_OK) {
            ESP_LOGE(APP_TAG, "i2c0 i2c_ccs811_get_measurement failed: %s", esp_err_to_name(result));
        } else {
            ESP_LOGI(APP_TAG, "eCO2  value: %d ppm", eco2);
            ESP_LOGI(APP_TAG, "eTVOC value: %d ppb", etvoc); 
        }
        //
        ESP_LOGI(APP_TAG, "######################## CCS811 - END ###########################");
        //
        //
        // pause the task per defined wait period
        vTaskDelaySecUntil( &last_wake_time, I2C0_TASK_SAMPLING_RATE );
    }
    //
    // free resources
    ccs811_delete( dev_hdl );
    vTaskDelete( NULL );
}