https://devzone.nordicsemi.com/f/nordic-q-a/23113/freertos-systickhandler-problemHi, I am working on nRF52 with freertos + SDK13.0 + sd S132_4.0.2. I found the device will be trap in the xTaskIncrementTick of the xPortSysTickHandler when some task is busy, e.g. streaming data from a spi sensor at 50Hz. When it is traped, the MCUen-USTelligent Community 13Wed, 05 Jul 2017 06:16:11 GMThttps://devzone.nordicsemi.com/thread/90934?ContentTypeID=1Wed, 05 Jul 2017 06:16:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:66a1df6c-570d-4a01-8576-3756a49f9c51Susheel Nuguru<p>Hi George,</p> <p>If you replace the file given in the thread you linked to FreeRTOS port given in SDK13, then we have not seen anyone seeing errors in tick frequency. In fact the tick frequency will be auto correcting itself. CAn you please attach your FreeRTOSConfig.h file. Did you make sure that you are not calling any FreeRTOS API not ending with _fromISR from higher interrupt priorities?</p> <p>The trap you mentioned in tickhandler, what exactly is that trap?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/90935?ContentTypeID=1Wed, 05 Jul 2017 03:38:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5906625b-3d48-4c3b-8c0a-2c8e92c5d753George Leung<p>HI, Is there any feedback on that? Is that I do something wrong?</p><div style="clear:both;"></div>