![]() ![]() The sleep mode I invoked testing them was SLEEP_MODE_PWR_DOWNĪll the interrupt pins in MEGA2560 work without problems, detecting all the five modes, but they cannot wake up the board from the sleep state with HIGH, RISING, FALLING and CHANGE. The sketch works without problems (maybe that studying the CPU Reference it will be possibile to find the related numbers) I don't know the related interrupts numbers right now, but using: attachInterrupt(digitalPinToInterrupt(interruptPin), blink, CHANGE) Ports 20 and 21 do not (I don't understand why, at the moment). Ports 18 and 19 work correctly, waking up Arduino Mega 2560 with RAISING, LOW, HIGH, CHANGE and FALLING parameters. I tested port 18 AND 19 on Arduino MEGA2560, few minutes ago, to see if interrupts generated on those ports work WAKE UP the board with all the states. Serial.println(" Button Interrupt detected") ĭetachInterrupt(digitalPinToInterrupt(interruptRTC)) Serial.println("setting Arduino's params for the sleep mode") ĭelay(100) Serial.println("next line will put Arduino in sleep mode") Serial.println(" Entered in IF resetting interrupts paramneters") Serial.println(" Entered in IF resetting RTC parameters") Serial.println(" Entered in IF, deleting ALARM1 e ALARM2 in RTC") Serial.print(" Entered in IF, cycle #: ") RTC.setAlarm(ALM2_EVERY_MINUTE, 0, 0, 0, 0) ĪttachInterrupt(digitalPinToInterrupt(interruptPin), blink, CHANGE) ĪttachInterrupt(digitalPinToInterrupt(interruptRTC), blink1, FALLING) ![]() Serial.println(" starting to set RTC params ") ground and the button work flawlessly (as always).Īll the buttons are connected togheter via diodes in order to obtain an unique HIGH state to be connected to pin 3, and -of course- this solution works perfectly as always with UNO and 2560. I never use the 2560's internal resistors with the "input_pullup" option, as I connect a 47K resistor for each button vs. It "dies" literally, in this case, and there is not any chance to wake it up. This sketch works normally if I delete the "sleep mode" related lines, the interrupts are correctly received and the LEDs change their state, but does not, when Arduino is put in sleep mode. I've to put Arduino in sleep mode and then let it wake-up every minute, after a certain amount of time or when a button is pressed (it depends upon certain external events).Īll the interrupts seem to work well, when used as simple interrupts, but when the sketch puts Mega in sleep mode. ![]() I got almost crazy, so I wrote a very simple sketch in order to test all the single steps. My sketch was perfectly running on UNO before, and it still works for the new Mega, right now, excepted for its sleep-interrupt-wake-up function. Installed MEGA on the same box of UNO and connected all the pins. So I decided to use a Mega2560 for this specific device, instead. ![]() I wrote alot of skecthes for UNO before this moment, and never found that limit until a couple of weeks ago. I wrote a big sketch for Arduino UNO a couple of months ago, but very soon I found UNO's limits in terms of memory and avaliable pins. I hope that someboidy could give me a hint. I'm "almost" new to this forum (I signed up years ago but never used it, before). ![]()
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