ESP32 C3 BME680 BSCE2 Error Code -2

[ptrkx]

Hey everyone i have problems getting a bme680 to run on an esp32 c3. if i try the example code of the bsec2 library i get the error bme680 error code -2 in the output of the serial monitor...i use the i2c communication via sda and scl in the arduino ide

I also tried to change: 

BME68X_I2C_ADDR_LOW

to 0x77 but sadly same output. error code -2

Sample Code:

/**
 * Copyright (C) 2021 Bosch Sensortec GmbH
 *
 * SPDX-License-Identifier: BSD-3-Clause
 *
 */

/* If compiling this examples leads to an 'undefined reference error', refer to the README 
 * at https://github.com/BoschSensortec/Bosch-BSEC2-Library
 */
/* The new sensor needs to be conditioned before the example can work reliably. You may run this
 * example for 24hrs to let the sensor stabilize.
 */

/**
 * basic.ino sketch :
 * This is an example for illustrating the BSEC virtual outputs and
 * which has been designed to work with Adafruit ESP8266 Board
 */

#include <bsec2.h>

/* Macros used */
#define PANIC_LED   LED_BUILTIN
#define ERROR_DUR   1000

/* Helper functions declarations */
/**
 * @brief : This function toggles the led when a fault was detected
 */
void errLeds(void);

/**
 * @brief : This function checks the BSEC status, prints the respective error code. Halts in case of error
 * @param[in] bsec  : Bsec2 class object
 */
void checkBsecStatus(Bsec2 bsec);

/**
 * @brief : This function is called by the BSEC library when a new output is available
 * @param[in] input     : BME68X sensor data before processing
 * @param[in] outputs   : Processed BSEC BSEC output data
 * @param[in] bsec      : Instance of BSEC2 calling the callback
 */
void newDataCallback(const bme68xData data, const bsecOutputs outputs, Bsec2 bsec);

/* Create an object of the class Bsec2 */
Bsec2 envSensor;

/* Entry point for the example */
void setup(void)
{
    /* Desired subscription list of BSEC2 outputs */
    bsecSensor sensorList[] = {
            BSEC_OUTPUT_IAQ,
            BSEC_OUTPUT_RAW_TEMPERATURE,
            BSEC_OUTPUT_RAW_PRESSURE,
            BSEC_OUTPUT_RAW_HUMIDITY,
            BSEC_OUTPUT_RAW_GAS,
            BSEC_OUTPUT_STABILIZATION_STATUS,
            BSEC_OUTPUT_RUN_IN_STATUS
    };

    /* Initialize the communication interfaces */
    Serial.begin(115200);
    Wire.begin();
    pinMode(PANIC_LED, OUTPUT);

    /* Valid for boards with USB-COM. Wait until the port is open */
    while(!Serial) delay(10);

    /* Initialize the library and interfaces */
    if (!envSensor.begin(BME68X_I2C_ADDR_LOW, Wire))
    {
        checkBsecStatus(envSensor);
    }

    /* Subsribe to the desired BSEC2 outputs */
    if (!envSensor.updateSubscription(sensorList, ARRAY_LEN(sensorList), BSEC_SAMPLE_RATE_ULP))
    {
        checkBsecStatus(envSensor);
    }

    /* Whenever new data is available call the newDataCallback function */
    envSensor.attachCallback(newDataCallback);

    Serial.println("BSEC library version " + \
            String(envSensor.version.major) + "." \
            + String(envSensor.version.minor) + "." \
            + String(envSensor.version.major_bugfix) + "." \
            + String(envSensor.version.minor_bugfix));
}

/* Function that is looped forever */
void loop(void)
{
    /* Call the run function often so that the library can 
     * check if it is time to read new data from the sensor  
     * and process it.
     */
    if (!envSensor.run())
    {
        checkBsecStatus(envSensor);
    }
}

void errLeds(void)
{
    while(1)
    {
        digitalWrite(PANIC_LED, HIGH);
        delay(ERROR_DUR);
        digitalWrite(PANIC_LED, LOW);
        delay(ERROR_DUR);
    }
}

void newDataCallback(const bme68xData data, const bsecOutputs outputs, Bsec2 bsec)
{
    if (!outputs.nOutputs)
    {
        return;
    }

    Serial.println("BSEC outputs:\n\ttimestamp = " + String((int) (outputs.output[0].time_stamp / INT64_C(1000000))));
    for (uint8_t i = 0; i < outputs.nOutputs; i++)
    {
        const bsecData output  = outputs.output[i];
        switch (output.sensor_id)
        {
            case BSEC_OUTPUT_IAQ:
                Serial.println("\tiaq = " + String(output.signal));
                Serial.println("\tiaq accuracy = " + String((int) output.accuracy));
                break;
            case BSEC_OUTPUT_RAW_TEMPERATURE:
                Serial.println("\ttemperature = " + String(output.signal));
                break;
            case BSEC_OUTPUT_RAW_PRESSURE:
                Serial.println("\tpressure = " + String(output.signal));
                break;
            case BSEC_OUTPUT_RAW_HUMIDITY:
                Serial.println("\thumidity = " + String(output.signal));
                break;
            case BSEC_OUTPUT_RAW_GAS:
                Serial.println("\tgas resistance = " + String(output.signal));
                break;
            case BSEC_OUTPUT_STABILIZATION_STATUS:
                Serial.println("\tstabilization status = " + String(output.signal));
                break;
            case BSEC_OUTPUT_RUN_IN_STATUS:
                Serial.println("\trun in status = " + String(output.signal));
                break;
            default:
                break;
        }
    }
}

void checkBsecStatus(Bsec2 bsec)
{
    if (bsec.status < BSEC_OK)
    {
        Serial.println("BSEC error code : " + String(bsec.status));
        errLeds(); /* Halt in case of failure */
    }
    else if (bsec.status > BSEC_OK)
    {
        Serial.println("BSEC warning code : " + String(bsec.status));
    }

    if (bsec.sensor.status < BME68X_OK)
    {
        Serial.println("BME68X error code : " + String(bsec.sensor.status));
        errLeds(); /* Halt in case of failure */
    }
    else if (bsec.sensor.status > BME68X_OK)
    {
        Serial.println("BME68X warning code : " + String(bsec.sensor.status));
    }
}

[BSTRobin]

Hi ptrkx,

1.Ensure your BME680 hardware was correct, and check if BME680 pin 5(SDO) was connected to GND as you set I2C address to BME68X_I2C_ADDR_LOW;
2. Could we know which BSEC version and example code you refer to?

[ptrkx]

Hey i am using BSEC2 Library: https://github.com/boschsensortec/Bosch-BSEC2-Library/tree/master/examples/generic_examples/basic

on Arduino IDE. 

Hardware ESP32 C3 with BME680 via I2C 

No problem with compiling, but seriell output is error code: -2

Same problem when i connect SDO to GND