Userguide

3
Raspberry Pi needs to issue a reset command before the timer on the watchdog expires. The command
can be sent either on the I2C port , or by toggling GPIO11 ( Pin 23 on the GPIO connector). The timer
period after power up and the active timer period can be set from the command line. The number of
resets is stored in flash and can be accessed or cleared from the command line.
When running on battery power, the watchdog processor monitors the battery voltage. To prevent
permanent damage to the battery due to over-discharging, the processor will cut off the power to
Raspberry Pi when the battery drops below 2.8V. A software command is available to the user to also
monitor the battery voltage. It is strongly recommended that Raspberry Pi performs a self-shutdown
then the battery voltage drops to 3.0V.
Command line software and Python drivers can be downloaded from Github.