Do Not Re|Enable Interrupts In An ISR

What happens if I disable an interrupt inside of its ISR?

Indeed, may ISRs will typically start by disabling interrupts lest they would get interrupted while servicing a first interrupt (and hence ...

Do Not Re-Enable Interrupts In An ISR - Better Embedded System SW

If interrupts are re-enabled within the ISR, then another interrupt can suspend the ISR and run some other, second ISR. This means that if a ...

You cannot enable interrupts within an ISR - Arduino Forum

Code in ISRs is generally considered critical and interrupts are automatically disabled during their execution, however you can find sections of ...

turn off interrupts in isr() routine? Why not - Arduino Forum

There is no point in disabling something that is already disabled. Globally enabling interrupts while an interrupt service routine is running ...

Best practise to disable external interrupt within ISR - AVR Freaks

Unless you explicitly enable interrupts they will be disabled for the duration of the execution of the ISR. The return of the ISR is done using the RETI ...

Solved: Re: Disabling Global Interrupts inside ISR - NXP Community

Hi , I don't see any issue with that. The interrupt can be preempted only by an interrupt with a higher priority. So, you can mask the ...

Disable interrupt in ISR on STM32F4 - Electronics Stack Exchange

Yes, you can disable the interrupt source inside the interrupt you're handling. This is actually a quite common procedure in things like ...

ISR won't stop getting called : r/osdev - Reddit

If it helps, you're probably already disabling and re-enabling interrupts. If you use an interrupt gate in your IDT, the CPU will disable ...

Rules for Using Interrupts - Better Embedded System SW

It makes code reviews easier if it is always in the same place. Don't re-enable interrupts within an ISR. That's just asking for subtle race ...

Must disable interrupt detection on servicing interrupt?

Yes, you will lose any interrupt that happens while you are servicing the interrupt routine. If you do not disable the interrupts, or the ...

disabling interrupts inside an ISR - AVR Freaks

All AVR auto turn off interrupts when an IRQ is fired, and re-enable them upon exit. Why would an IRQ ever be that long? IRQ's should be as short as ...

How can I reenable interrupt inside an isr? - TI E2E

tasks run once, not continuously · tasks do not block or wait · tasks run in strict priority. · Often all tasks share a common stack · As when using ...

interrupting an interrupt - Arduino Stack Exchange

You can re-enable interrupts inside the ISR, but that only means other interrupt may interrupt this ISR, but never the same vector. (i.e. ...

interrupt still triggered after interrupt service has been disabled

The problem here is during the time while one GPIO's interrupt is disabled, the newly generated interrupts are somehow "registered" internally, ...

How to Properly Enable/Disable Interrupts - Microchip Forums

When the current state of the interrupt flag is not known you need to save the state of the interrupt enable flag before disabling it and then ...

Question about disabling interrupts - Infineon Developer Community

What I needed to do was use the _ClearInterrupt() then _ClearPending() commands in that order just before re-enabling the interrupt. I must have ...

When to enable interrupts - before or after vTaskStartScheduler()?

did you make sure that interrupts re DISabled out of reset (eg the first instruction in the Reset handler ISR is a cpsid)? Some PODs come ...

Enable/Disable Global Interrupts - STMicroelectronics Community

My main program needs to perform a few quick operations using this stored data and thus I need to ensure that the data is not overwritten by an ISR midstream.

What happens when ISR execution time is longer than interrupt occurs

Note: Never re-enable interrupts inside the interrupt function itself. Interrupts are automatically re-enabled by hardware on execution of the ...

An interrupt can occur after interrupts have been disabled

You should not disable all interrupts using that instruction, but clean the interrupt bit from your specific core ISR register, if i'm not ...