#Arduino timer interrupt stack overflow serial#

If the function hangs, inside the interrupt function (ISR) which will be declared as Nacked (without pushing registers) you will properly unstack the registers (pop ) pushed during the prologue of your 'weird' function, then you exit from the ISR and resume your main program after the call to the 'weird' function via a goto (a jump) to a C label. While one of the Timer IC is used to produce clock signals, the other is. Maybe you would want to store in EEPROM some data before calling the 'weird' function.ī/ I don't see the interest of using a 'weird' function which will not give you (sometimes) the expected results….but if you want to stop only the process of a function called inside your program and resume your main program, then :ġ/ start a timer which will trigger an interrupt (ISR) on overflow after an estimated time lapse.ģ/ stop your timer after the exit of your function for the case you exit properly from this function. If there is any obstacle in front of IR sensor, it generates an interrupt signal. After a watchdog trigger, there will be a reset and you will lose what was previously in RAM and start at the beginning of your main program. About Products For Teams Stack Overflow Public questions & answers Stack Overflow. But, if it's not possible for you, I see 2 possibilities:Ī/ As already mentioned, if you want to stop your main program if a function hangs, use the watchdog timer. Armed with Arduino ESP8266/ESP32 Exception Stack Trace Decoder you can track down where the module is crashing whenever you see the stack trace dropped.

#Arduino timer interrupt stack overflow serial#

Use of timer interrupts in arduino stop the serial library functions why 0 Timer1 on low priority doesn't work. To solve your problem, the best thing to do is to write a new function as stated by PaulS. Stack Overflow Public questions & answers.