Arduino library to use the watchdog timer for system reset and low power sleep.
Currently supports the following hardware:
- Arduino Uno or other ATmega328P-based boards.
- Arduino Mega or other ATmega2560- or 1280-based boards.
- Arduino Zero, Adafruit Feather M0 (ATSAMD21).
- Adafruit Feather M4 (ATSAMD51).
- Arduino Leonardo or other 32u4-based boards (e.g. Adafruit Feather) WITH CAVEAT: USB Serial connection is clobbered on sleep; if sketch does not require Serial comms, this is not a concern. The example sketches all print to Serial and appear frozen, but the logic does otherwise continue to run. You can restore the USB serial connection after waking up using
USBDevice.attach();and then reconnect to USB serial from the host machine. - Partial support for Teensy 3.X and LC (watchdog, no sleep).
Adafruit Trinket and other boards using ATtiny MCUs are NOT supported.