If you are using SAM series controller you probably have came across this question, How do i implement two timer which generate two interrupt at different time in same project? or How we can use two timer in same project in SAME54 controller? Well SAM series controller are ARM-based MCUs and MPUs from ATMEL now Microchip. We are using ATSAME54P20A ie SAME54 explained pro board to evaluate the functionality of it. So created new project using start.atmel.com with TC0 and TC1 along with WDT and interrputs. The project tree looks as below, This project works well and TC0 timer interrupt is working but TC1 timer interrupt is not working. Following is code for initialization and using

In our application it is required to use FreeRTOS API functions from an interrupt service routine(ISR). Good thing about FreeRTOS is it has provided interrupt safe API, meaning one can use FreeRTOS API functions from ISR, as they have provided two versions of some API. Functions intended for use from ISRs have “FromISR” appended to their name eg. xQueueSendFromISR How to set correct priority levels if I want to call an ISR-safe function from interrupt? Because the maximum level of configKERNEL_INTERRUPT_PRIORITY is 1 and the minimum preemption Priority level of any interrupt source e.g. and edge interrupt is 15. That means it is above the max. level of configKERNEL_INTERRUPT_PRIORITY. In our application we were using xQueueSendFromISR() from IRQ10 ie 'EIC_10_IRQn', to