https://devzone.nordicsemi.com/f/nordic-q-a/15709/nrf5-freertos-main-stack-reusedI am using the FreeRTOS port included in a nRF52832 with nRF5 v11.0.0 + s132. From main() I create a task and I pass it some input data as argument. That data is encapsulated in a struct which I declare in the stack of the main function. When the recoveren-USTelligent Community 13Fri, 12 Aug 2016 09:15:04 GMThttps://devzone.nordicsemi.com/thread/59971?ContentTypeID=1Fri, 12 Aug 2016 09:15:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:88c2baf8-0c9c-4614-ad6d-8e51d36b8869genis<p>I think there is a misunderstanding, I am not using the ISR. Anyway I was assuming what I declared in the stack in main() didn&#39;t get modified, which is obviously wrong here. I&#39;ll declare it in the heap, but I wanted to know why that was happening. Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59970?ContentTypeID=1Fri, 12 Aug 2016 08:34:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fd9021b2-b03d-447b-aecc-32bccdd669b4Susheel Nuguru<p>This is nothing to do with the Nordic port of UART. The stack of main and the stack of your newly created task are different. You cannot pass stack memory to the created task because now you assume that the main stack remains untouched at the time your task gets to running state. The first chapter of FreeRTOS tells you to declare static if you want to exchange bulk information in between tasks. Also I do not see anything wrong in declaring your task_arg_t args as static outside main.</p><div style="clear:both;"></div>