eCo2 and bVOCe is always 0

[Plastefuchs84]

Hi,

since the last updates of 2018 and 2019 he shows me no Air Quality value. The version BSEC_1.4.6.0_Generic_Release_20180425 Unfortunately, the other version does not work for me. Compiling has worked for all versions.

Maybe they have an idea. Thanks for the great support

pi@raspberrypi:/var/homebridge $ ./bsec_bme680 bsec_iaq.state empty 2019-10-01 18:54:15,[IAQ (0)]: 25.00,[T degC]: 19.32,[H %rH]: 83.17,[P hPa]: 988.72,[G Ohms]: 344287,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00 2019-10-01 18:54:18,[IAQ (0)]: 25.00,[T degC]: 19.56,[H %rH]: 82.13,[P hPa]: 988.64,[G Ohms]: 458132,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00 2019-10-01 18:54:22,[IAQ (0)]: 25.00,[T degC]: 19.63,[H %rH]: 81.80,[P hPa]: 988.63,[G Ohms]: 483970,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00 2019-10-01 18:54:24,[IAQ (0)]: 25.00,[T degC]: 19.34,[H %rH]: 82.90,[P hPa]: 988.70,[G Ohms]: 460337,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00

[Plastefuchs84]

Update: Air Quality works. Sorry :-)))

2019-10-01 19:14:54,[IAQ (1)]: 99.99,[T degC]: 19.97,[H %rH]: 79.45,[P hPa]: 988.64,[G Ohms]: 549533,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00 2019-10-01 19:14:57,[IAQ (1)]: 118.83,[T degC]: 19.69,[H %rH]: 80.59,[P hPa]: 988.66,[G Ohms]: 507069,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00 2019-10-01 19:15:00,[IAQ (1)]: 119.40,[T degC]: 19.96,[H %rH]: 79.43,[P hPa]: 988.68,[G Ohms]: 524143,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00

Unfortunately, the homebridge does not yet speak with the new values https://github.com/trho/homebridge-bme680

Oct 01 18:40:05 raspberrypi homebridge[932]: [2019-10-1 6:40:05 PM] [Sensor] bsec_iaq.state empty Oct 01 18:40:07 raspberrypi homebridge[932]: [2019-10-1 6:40:07 PM] [Sensor] unable to parse iaq result: SyntaxError: Unexpected number in JSON at position 4 Oct 01 18:40:10 raspberrypi homebridge[932]: [2019-10-1 6:40:10 PM] [Sensor] unable to parse iaq result: SyntaxError: Unexpected number in JSON at position 4 Oct 01 18:40:13 raspberrypi homebridge[932]: [2019-10-1 6:40:13 PM] [Sensor] unable to parse iaq result: SyntaxError: Unexpected number in JSON at position 4

[alexh-name]

Hi,

I have no connection to the repo https://github.com/trho/homebridge-bme680.

Regarding the estimate gas ppm values: This is odd. What version off BSEC are you using? Make sure it's the latest (1.4.7.4).

[Plastefuchs84]

Yes i used BSEC 1.4.7.4.

[Plastefuchs84]

the result after 10min

2019-10-22 17:48:20,[IAQ (1)]: 25.00,[T degC]: 17.61,[H %rH]: 88.53,[P hPa]: 1011.27,[G Ohms]: 298427,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00 2019-10-22 17:48:23,[IAQ (1)]: 25.00,[T degC]: 17.62,[H %rH]: 88.47,[P hPa]: 1011.27,[G Ohms]: 298157,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00

[alexh-name]

Something is off. The values for eCO2/bVOCe should be 500/0.4999 even before reaching BSEC calibration status 1. Can you please post your make.config? Or maybe even your whole project directory?

[Plastefuchs84]

pi@raspberrypi:~/bsec_bme680_linux $ ls -l total 688 -rwxr-xr-x 1 root root 674252 Sep 27 14:11 bsec_bme680 -rw-r--r-- 1 root root 9828 Sep 27 13:16 bsec_bme680.c -rw-r--r-- 1 pi pi 458 Sep 27 14:11 bsec_iaq.config -rw-r--r-- 1 pi pi 0 Sep 27 13:06 bsec_iaq.state -rwxrwxrwx 1 root root 439 Sep 27 13:04 make.config -rwxrwxrwx 1 root root 999 Sep 27 14:07 make.sh drwxr-xr-x 2 root root 4096 Sep 27 13:37 patches pi@raspberrypi:~/bsec_bme680_linux $

This is the code from make.config:

BSEC_DIR='/usr/src/BSEC_1.4.7.4_Generic_Release'

VERSION='normal_version'

ARCH="${VERSION}/bin/RaspberryPI/PiZero_ArmV6-32bits"

Other architectures can be found in BSEC_DIR/algo/${VERSION}/bin/.

CONFIG='generic_33v_3s_4d'

Other configs are:

generic_18v_300s_28d

generic_18v_300s_4d

generic_18v_3s_28d

generic_18v_3s_4d

generic_33v_300s_28d

generic_33v_300s_4d

generic_33v_3s_28d

generic_33v_3s_4d

CONFIG_DIR='.'

pi@raspberrypi:/usr/src $ ls -l total 12 drwxr-xr-x 8 root root 4096 Sep 27 12:41 BSEC_1.4.7.4_Generic_Release drwxr-xr-x 3 root root 4096 Sep 29 09:14 bsec_bme680_linux drwxr-xr-x 3 root root 4096 Jul 10 02:14 sense-hat pi@raspberrypi:/usr/src $

[Plastefuchs84]

when compiling also appears an error

pi@raspberrypi:/var/homebridge $ ./make.sh Patching... ./make.sh: 24: ./make.sh: cannot open patches/eCO2+bVOCe.diff: No such file Already applied. Compiling... Compiled. Copied config.

UPDATE:

pi@raspberrypi:/var/homebridge $ ./make.sh Patching... 2 out of 2 hunks FAILED Already applied. Compiling... Compiled. Copied config.

pi@raspberrypi:/var/homebridge $ ls -l
total 700 drwxrwxrwx 2 homebridge homebridge 4096 Sep 26 23:51 accessories -rwxr-xr-x 1 pi pi 674252 Nov 1 20:29 bsec_bme680 -rw-r--r-- 1 root root 9828 Oct 29 08:04 bsec_bme680.c -rwxrwxrwx 1 root root 458 Nov 1 20:29 bsec_iaq.config -rw-r--r-- 1 pi pi 0 Oct 1 18:54 bsec_iaq.state -rwxrwxrwx 1 homebridge homebridge 489 Oct 26 15:03 config.json -rwxr-xr-x 1 root root 469 Sep 30 17:27 make.config -rwxr-xr-x 1 root root 1234 Sep 30 17:36 make.sh drwxr-xr-x 2 pi pi 4096 Nov 1 20:16 patches drwxrwxrwx 2 homebridge homebridge 4096 Oct 26 14:58 persist

pi@raspberrypi:/var/homebridge $ ./bsec_bme680 bsec_iaq.state empty 2019-11-01 20:30:38,[IAQ (0)]: 25.00,[T degC]: 15.58,[H %rH]: 78.97,[P hPa]: 992.68,[G Ohms]: 147968,[S]: 0,[eCO2 ppm]: 0.00,[bVOCe ppm]: 0.00

[Plastefuchs84]

hi, I think we can close the question. I've gone back to the old BSEC version for my apple homekit. Thanks anyway

[TBR-BRD]

I have the same Problem: 2020-12-08 21:28:18,[IAQ (1)]: 26.55,[T degC]: 20.73,[H %rH]: 61.14,[P hPa]: 1007.06,[G Ohms]: 194726,[S]: 0,[eCO2 ppm]: 0.000000000000000,[bVOCe ppm]: 0.0000000000000000000000000

[alexh-name]

Ironically, after I thought that patching bsec_integration.c was not longer necessary in newer versions and just removing the patch, it is needed again. Fixed in 6953631ba3dcd08e8108c27737e31452d6abe768.