https://devzone.nordicsemi.com/f/nordic-q-a/13118/simple-ppi-questionhi, i am going to make a simple PWM with SDK 6.0.0, nrf51822 and softdevice. first, i use ble_app_uart example as a base code, because i need to BLE communication with high frequency. here is my simple code /**@brief Application main functionen-USTelligent Community 13Tue, 12 Apr 2016 12:15:23 GMThttps://devzone.nordicsemi.com/thread/50018?ContentTypeID=1Tue, 12 Apr 2016 12:15:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:90417806-afb0-4132-b45d-ef61e58b18dewooyongKim<p>Thanks a lot.</p> <p>so, anyone is right?? 1 ) with the softdevice from SDK 6.0.0, i cannot use ppi function at all. 2 ) with the softdevice from SDK 6.0.0, i cannot access the ppi directly. however there is a indirect access way that i use ppi function</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/50017?ContentTypeID=1Mon, 11 Apr 2016 18:18:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:91a734d7-dee7-4316-81db-acb78c1ba711Krzysztof Chruscinski<p>If you are using SoftDevice from SDK6.0.0 then PPI is a restricted resource (controlled by SoftDevice). You cannot access it directly. Check nrf_soc.h API in SoftDevice for controlling PPI. Note, that newer softdevice releases removed this limitation and PPI can be accessed directly.</p><div style="clear:both;"></div>