[freeRTOS] Second Task creation issue and control stuck everytime in port.c file only

[hs2 (Hartmut Schaefer)]

Probably the HW interrupt priority set in NVIC is incorrect.
Have a look at this related documentation:

RTOS for ARM Cortex-M

and this very good forum posts:

What is config KERNEL INTERRUPT PRIORITY?

Why is it that “Interrupts that call API functions must also execute at this priority”? Is there an example? What is the treatment different between interrupts which call, and don’t call, API functions? For the discussion below, lets make the following assumptions: Numerically higher priority interrupts have logically higher priority (i.e. priority 2 interrupt can preempt priority 1 interrupt handler). The port implements configKERNEL_INTERRUPT_PRIORITY and configMAX_SYSCALL_INTERRUPT_PRIO…

Understanding priority levels of ISR and FreeRTOS APIs

A pictorial representation, if that helps: Logical Numerical Priorities Priorities +--------+ +-------+ ^ | | | | | | | | | | | | | | | Not masked by FreeRTOS kernel | Higher | | Lower | | ( FreeRTOS APIs can not be | | | | | called from these ISRs. ) …