81 lines
2.8 KiB
Arduino
81 lines
2.8 KiB
Arduino
// Adafruit Watchdog Library Basic Usage Example
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//
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// Simple example of how to use the watchdog library.
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//
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// Author: Tony DiCola
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#ifdef USE_TINYUSB
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#include <Adafruit_TinyUSB.h> // Include TinyUSB Serial port
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#endif
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#include <Adafruit_SleepyDog.h>
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void setup() {
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Serial.begin(115200);
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while (!Serial)
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delay(10);
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// wait for Arduino Serial Monitor (native USB boards)
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Serial.println("Adafruit Watchdog Library Demo!");
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Serial.println();
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// First a normal example of using the watchdog timer.
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// Enable the watchdog by calling Watchdog.enable() as below.
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// This will turn on the watchdog timer with a ~4 second timeout
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// before reseting the Arduino. The estimated actual milliseconds
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// before reset (in milliseconds) is returned.
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// Make sure to reset the watchdog before the countdown expires or
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// the Arduino will reset!
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int countdownMS = Watchdog.enable(4000);
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Serial.print("Enabled the watchdog with max countdown of ");
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Serial.print(countdownMS, DEC);
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Serial.println(" milliseconds!");
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Serial.println();
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// Now loop a few times and periodically reset the watchdog.
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Serial.println("Looping ten times while resetting the watchdog...");
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for (int i = 1; i <= 10; ++i) {
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Serial.print("Loop #");
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Serial.println(i, DEC);
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delay(1000);
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// Reset watchdog with every loop to make sure the sketch keeps running.
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// If you comment out this call watch what happens in about 4 iterations!
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Watchdog.reset();
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}
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Serial.println();
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// can not disable NRF or RP2040 wdt once enabled
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#if !defined(NRF52_SERIES) && !defined(ARDUINO_ARCH_RP2040)
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// Disable the watchdog entirely by calling Watchdog.disable();
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Watchdog.disable();
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#endif
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// Finally demonstrate the watchdog resetting by enabling it for a shorter
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// period of time and waiting a long time without a reset. Notice you can
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// pass a _maximum_ countdown time (in milliseconds) to the enable call.
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// The library will try to use that value as the countdown, but it might
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// pick a smaller value if the hardware doesn't support it. The actual
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// countdown value will be returned so you can see what it is.
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countdownMS = Watchdog.enable(4000);
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Serial.print("Get ready, the watchdog will reset in ");
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Serial.print(countdownMS, DEC);
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Serial.println(" milliseconds!");
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Serial.println();
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#ifndef ARDUINO_ARCH_ESP8266
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delay(countdownMS + 1000);
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#else
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// Calls to delay() and yield() feed the ESP8266's
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// hardware and software watchdog timers, delayMicroseconds does not.
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delayMicroseconds(countdownMS * 1000);
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#endif
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// Execution will never get here because the watchdog resets the Arduino!
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}
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void loop() {
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// We'll never actually get to the loop because the watchdog will reset in
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// the setup function.
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Serial.println("You shouldn't see this message.");
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delay(1000);
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}
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