BME680 bme680_status = -3 error

[Crackl1ng]

Edit: I accidentely changed some I2C pins, which were refering to BME680. This most likely solves my issue. Sorry for the inconvenience, maybe someone can use this, since i didn't find something on the issue either.

Hello Bosch-Community,

I've been using the code given to me by BSTRobin for a quite a while (link to the forum post: Solved: BME860 does not return humidity or gas-resistance and it used to work flawlessly.

I haven't checked the sensor for quite a while, since I had other sensors to work on. When testing my LoRa + BME680 sensor on my stm32 machine again (I'm also using STM32IDE), it does not enter the bsec_iot_loop, because ret.bme680_status returns -3. Here is a snippet of the main code: 

while(1)
{
	return_values_init ret;

		//PDEBUG("StartBME680Task\r\n");
		/* Call to the function which initializes the BSEC library
		* Switch on low-power mode and provide no temperature offset */
	    ret = bsec_iot_init(BSEC_SAMPLE_RATE_HP, 4.85f, bus_write2, bus_read2, sleep, state_load, config_load);
		if (ret.bme680_status)
		{
			/* Could not intialize BME680 */
			//PDEBUG("Could not intialize BSEC library, bme680_status=%d\r\n", ret.bme680_status);
			//return (int)ret.bme680_status;
		}
		else if (ret.bsec_status)
		{
			/* Could not intialize BSEC library */
			//PDEBUG("Could not intialize BSEC library, bsec_status=%d\r\n", ret.bsec_status);
			//return (int)ret.bsec_status;
		}

		if((ret.bme680_status == 0) && (ret.bsec_status == 0))

		{
		//	PDEBUG("intialize BSEC library successful\r\n");
			/* Call to endless loop function which reads and processes data based on sensor settings */
			/* State is saved every 10.000 samples, which means every 10.000 * 3 secs = 500 minutes  */
			while(1){
		}

Neither google, nor the datasheet told me something about the error code. I'm thankful for every help.

Kind regards

[BSTRobin]

Hello Crackl1ng,

You could debug step by step to see where the error is reported in the following functions.
ret = bsec_iot_init(BSEC_SAMPLE_RATE_LP, 0.0f, bus_write, bus_read, sleep, state_load, config_load);