https://devzone.nordicsemi.com/f/nordic-q-a/62390/nrf9160-development-with-keilHi, Looking at the Keil website I was assuming that the I could develop a nRF9160 based custom design using this IDE with ULINK2 interface. There are Nordic development packs, with one &#39; Nordic Semiconductor nRF ARM devices Device Family Pack with BSDen-USTelligent Community 13Wed, 10 Jun 2020 12:18:13 GMThttps://devzone.nordicsemi.com/thread/254254?ContentTypeID=1Wed, 10 Jun 2020 12:18:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:34a04fc5-62f6-475c-89c1-a9a836bed1fdH&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>Unfortunately, the nRF connect SDK (ncs for short) supports gcc based compiler(s). See this blog post for more information on how to setup the toolchain and getting the SDK:</p> <p><a href="https://devzone.nordicsemi.com/nordic/nrf-connect-sdk-guides/b/getting-started/posts/nrf-connect-sdk-tutorial">https://devzone.nordicsemi.com/nordic/nrf-connect-sdk-guides/b/getting-started/posts/nrf-connect-sdk-tutorial</a></p> <p>&nbsp;</p> <p>The toolchain manager should help you with the setup procedure:</p> <p><a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/gs_assistant.html#installing-the-toolchain-manager">https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/gs_assistant.html#installing-the-toolchain-manager</a></p> <p>&nbsp;</p> <p>It is technically possible to use the bsdlib directly, and continue development with Keil ARM MDK, but&nbsp;then you have to add all supporting libraries manually.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>