l am designing an interrupt based number counter which shows the values as they increment on 8 LEDs using an atmega32. My problem is my ISR(interrupt service routine)is not able to light up the LEDs as l increment from INT0below is the code l made, only the ISR is not lighting the LEDs
interrupt based LEDs up counter on an atmega32
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In
SR
, thecount
variable is on the stack. Its value does not persist across invocations.Here is your original code [with annotations]:
You need to add
static
to get the value to persist: