https://devzone.nordicsemi.com/f/nordic-q-a/77535/zmod4410-precompiled-library-uses-vfp-registersHi! I&#39;m trying to use a precompiled library of TVOC sensor ZMOD4410 in a project based on the azure_iot_hub from Nordic, running it over a nrf9160 board. This library is called lib_iaq_2nd_gen.a and It was compiled in configuration to use the Virtualen-USTelligent Community 13Mon, 19 Jul 2021 19:30:19 GMThttps://devzone.nordicsemi.com/thread/320780?ContentTypeID=1Mon, 19 Jul 2021 19:30:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c0a768e-09e9-4bc1-b3b9-bddc16dade5eSimon<p>In the prj.conf of your project, first you should set <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/kconfig/CONFIG_FPU.html">CONFIG_FPU</a>=y, then use&nbsp;<span><a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/kconfig/CONFIG_FP_SOFTABI.html#cmdoption-arg-CONFIG_FP_SOFTABI">CONFIG_FP_SOFTABI</a>=y&nbsp;</span><span>or&nbsp;</span><span><a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/kconfig/CONFIG_FP_HARDABI.html#cmdoption-arg-CONFIG_FP_HARDABI">CONFIG_FP_HARDABI</a>=y.</span></p> <p><span>Please let me know if this doesn&#39;t work.</span></p> <p><span>Best regards,</span></p> <p><span>Simon</span></p><div style="clear:both;"></div>