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    Multiple BME680 devices with BSEC

    handytech
    Community Moderator

    Re: Multiple BME680 devices with BSEC

    The error returned here by bsec_do_steps() is due to the time_stamp value of 0. Using time_stamp=1 instead in the 'dummy' do_steps() call should solve this.

    handytech
    Community Moderator

    Re: Multiple BME680 devices with BSEC

    Are you successfully able to calibrate BSEC (i.e. reach IAQ accuracy of 3) with this pseudo-code? Did you totally skip the 'dummy' do_steps call?

    BBA
    New Poster

    Re: Multiple BME680 devices with BSEC

     /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: Output/ble_iaqm Debug/Obj/main.o: in function `app_bsec_state_load':
    1> /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/main.c:1526: undefined reference to `bsec_get_state'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: Output/ble_iaqm Debug/Obj/main.o: in function `app_bsec_config_load':
    1> /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/main.c:1542: undefined reference to `bsec_get_configuration'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: Output/ble_iaqm Debug/Obj/main.o: in function `main':
    1> /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/main.c:1577: undefined reference to `bsec_get_version'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: Output/ble_iaqm Debug/Obj/bsec_integration.o: in function `bme680_bsec_update_subscription':
    1> /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/bme680/BSEC/bsec_integration.c:140: undefined reference to `bsec_update_subscription'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: Output/ble_iaqm Debug/Obj/bsec_integration.o: in function `bsec_iot_init':
    1> /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/bme680/BSEC/bsec_integration.c:186: undefined reference to `bsec_init'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/bme680/BSEC/bsec_integration.c:196: undefined reference to `bsec_set_configuration'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/bme680/BSEC/bsec_integration.c:207: undefined reference to `bsec_set_state'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: Output/ble_iaqm Debug/Obj/bsec_integration.o: in function `bme680_bsec_process_data':
    1> /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/bme680/BSEC/bsec_integration.c:417: undefined reference to `bsec_do_steps'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: Output/ble_iaqm Debug/Obj/bsec_integration.o: in function `bsec_iot_loop':
    1> /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/bme680/BSEC/bsec_integration.c:521: undefined reference to `bsec_sensor_control'
    1> /Applications/SEGGER Embedded Studio for ARM 4.52b/gcc/arm-none-eabi/bin/ld: /Users/baranibremaaarohi/ble_project/iaqm_project/ble_iaqm/bme680/BSEC/bsec_integration.c:539: undefined reference to `bsec_get_state'
    Build failed
    joao_ladeira
    Member

    Re: Multiple BME680 devices with BSEC

    In my case i had to create a process per sensor (which i don't like, but at that time was the only think that got me to get correct results for several sensors at the same time). I will try your approach as soon as i get some time, thanks!

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