Firmware - BitKnitting/should_I_water GitHub Wiki

The watering puck

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The Rasp Pi sends the watering puck a _START_WATERING_PACKET. The data part of the packet contains:

struct __attribute__((packed)) wateringInfo_t // not sending battery info because plugged into 24VAC.
{
  uint8_t packet_type;
  uint8_t node_id_watering_puck;
  uint8_t node_id_sender;
  uint8_t valve_id;
  uint8_t watering_minutes;
};

• 1st byte: The packet type set to _START_WATERING_PACKET.
• 2nd byte: The node ID of the watering puck.
• 3rd byte: The node ID of the sender.
• 4th byte: The valve ID of the valve that should be turned on/off.
• 5th byte: The number of minutes to water.