#18 Shouldn’t inhibit interrupts in interrupt-handling PO

[Simon Wright]

System.Tasking.Protected_Objects.Lock says

  if FreeRTOS.Tasks.In_ISR then
     null;
  elsif Object.Ceiling in System.Interrupt_Priority then
     FreeRTOS.Tasks.Disable_Interrupts;
  else

but the correct call to prevent interactions with interrupts would be FreeRTOS.Tasks.Enter_Critical_Region. This raises BASEPRI to configMAX_SYSCALL_INTERRUPT_PRIORITY and locks out all FreeRTOS functionality, while allowing interrupts at higher (numerically lower on Cortex) priority to proceed.

[Simon Wright]

Fixed in [a8d301].