Interrupt inputs are a limited resource on the ESP32, and initializing certain features requires interrupt inputs to be attached to the peripherals. Just like other resources (such as RAM), the program can run out of the interrupt inputs if it uses multiple features at once. The good news is that it is usually possible to […]

What can you do in interrupts In ISR functions you can do only simple thing, not time consuming operations. Disable interrupts You can suspend interrupts and context switches by calling  portDISABLE_INTERRUPTS and the interrupts on that core should stop firing, stopping task switches as well. Call portENABLE_INTERRUPTS after you're done