https://devzone.nordicsemi.com/f/nordic-q-a/7579/enableirq-returns-ppi-errorHello. After a couple of s210 and s310 projects, I am attempting an s120 project. I built a client SDK but sd_nvic_EnableIRQ returns error code 0x2009 or NRF_ERROR_SOC_PPI_INVALID_GROUP. What can be done? Thank you. // Initialize SoftDevice. err_codeen-USTelligent Community 13Thu, 11 Jun 2015 23:57:37 GMThttps://devzone.nordicsemi.com/thread/27020?ContentTypeID=1Thu, 11 Jun 2015 23:57:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b57eff13-8587-4a7d-8fd4-230f90a720b5David Woosley<p>Thank you for the response. The issue was that I was starting out with SDK 7.2.0 instead of SDK 8.1.0. Softdevice calls no longer return error codes that do not make sense. Thanks, again.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/27021?ContentTypeID=1Thu, 11 Jun 2015 23:17:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cfe3be8e-bb53-41f3-a23b-56947ee50e4cUlrich Myhre<p>Hi!</p> <p>If you haven&#39;t configured any PPI channels, then you migth be compiling against the wrong header files for the currently flashed SoftDevice.</p> <p>If you <em>are</em> setting up PPI channels, make sure to read the chapter 10.4 in the <a href="https://www.nordicsemi.com/eng/nordic/download_resource/45625/14/31118347">S120-SDS</a> [PDF warning] where the limitations of PPIs are listed</p><div style="clear:both;"></div>