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HTTP API Reference

This project provides an HTTP API to start and stop programs / zones.

Because of limitations in the chosen libraries, the API can only return whether it has correctly received the request. If you add a result parameter in your request, the board will send the result of parsing it and starting / stopping a zone or program to the URL you specify.

Note that Hunter's 1-wire protocol is write-only. Therefore, if the board returns that it started a program / zone correctly, it only means that there were no errors in the request and the program, but has no way of knowing if the Hunter Sprinkler System has actually done it. This limitation also means that the API cannot have a status endpoint.

The "result" parameter

If you add a result parameter in your request, the board will send a JSON to the webhook you specify containing:

  • action: a friendly name of the requested action.
  • action_num: a number to indicate the requested action
    • 1: start a zone
    • 2: stop a zone
    • 3: start a program
  • program / zone: the program or zone started or stopped.
  • result: a friendly name of the result of the request.
  • result_num: a number to indicate the result of the request.
    • 0: no error
    • 1: invalid zone number
    • 2: invalid watering time
    • 3: invalid program number
    • Any other: unknown error

You can change the JSON in the following files:

  • src/web_server_scheduled.cpp, modifying the toSend variable.
  • lib/HunterRoam/HunterRoam.cpp, inside HunterRoam::errorHint(byte error).

Endpoint to start a zone

GET /api/start/zone/[ZONE-NUMBER]?time=[TIME-MINUTES]&result=[WEBHOOK]

  • Zone number: station to start. It supports up to 48 stations.
  • Time: watering minutes.
  • Result (optional): your webhook.

It returns a JSON containing:

  • status: whether it has correctly received your request.
  • result: whether the board will send the result to your webhook.

Example

GET /api/start/zone/3?time=10&result=https%3A%2F%2Fexample.com%2Fwebhook

It will start zone 3 during 10 minutes and send the result to https://example.com/webhook

Endpoint to stop a zone

GET /api/stop/zone/[ZONE-NUMBER]?result=[WEBHOOK]

  • Zone number: station to start. It supports up to 48 stations.
  • Result (optional): your webhook.

It returns a JSON containing:

  • status: whether it has correctly received your request.
  • result: whether the board will send the result to your webhook.

Example

GET /api/stop/zone/3?result=https%3A%2F%2Fexample.com%2Fwebhook

It will stop zone 3 and send the result to https://example.com/webhook

Endpoint to start a program

GET /api/start/program/[PROGRAM-NUM]?result=[WEBHOOK]

  • Program number: program to start. It supports up to 4 programs. Note that Hunter specifies programs with a letter, so 1 is A.
  • Result (optional): your webhook.

It returns a JSON containing:

  • status: whether it has correctly received your request.
  • result: whether the board will send the result to your webhook.

Example

GET /api/start/program/2?result=https%3A%2F%2Fexample.com%2Fwebhook

It will start program 2 (Hunter's B) and send the result to https://example.com/webhook