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AI-on-the-edge-device-docs/docs/REST-API.md
2023-02-13 18:02:28 +01:00

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REST API

Various information is directly accessible over specific REST calls.

To use it, just append them to the IP, separated with a /, e.g. http://192.168.1.1/json

Note: For more detailed information to the REST handler, have a look to the code in the repository: registered handlers

Control

  • flow_start

    Trigger a flow start (if not running)

  • Set Pre Value

    Set the Previous Value

    /setPreValue?value=1234&numbers=main where 1234 is the new value and main the name of the number to be adjusted.

  • GPIO

    • Control a GPIO output

      • The GPIO entrypoint also support parameters:
        • /GPIO?GPIO={PinNumber}&Status=high
        • /GPIO?GPIO={PinNumber}&Status=low
      • Example: /GPIO?GPIO=12&Status=high
    • Read a GPIO input

      • The GPIO entrypoint also support parameters:
        • /GPIO?GPIO={PinNumber}
      • Example: /GPIO?GPIO=12
  • ota

  • ota_page.html

    Opens the Over-The-Air update html page

  • reboot

    Trigger a reboot of the device

Results

  • json

    Show result in JSON syntax

    • Example: { "main": { "value": "521.17108", "raw": "521.17108", "pre": "521.17108", "error": "no error", "rate": "0.023780", "timestamp": "2023-01-13T16:00:42+0100" } }
  • value

    Show single result values

    • The value entrypoint also support parameters:
    • http://<IP>/value?all=true&type=value
    • http://<IP>/value?all=true&type=raw
    • http://<IP>/value?all=true&type=error
    • http://<IP>/value?all=true&type=prevalue
  • img_tmp/raw.jpg

    Capture and show a new raw image

  • img_tmp/alg.jpg

    Show last aligned image

  • img_tmp/alg_roi.jpg

    Show last aligned image including ROI overlay

Status

  • statusflow

    Show the actual step of the flow incl. timestamp

    • Example: Take Image (15:56:34)
  • rssi

    Show the WIFI signal strength (Unit: dBm)

    • Example: -51
  • cpu_temperature

    Show the CPU temperature (Unit: °C)

    • Example: 38
  • sysinfo

    Show system infos in JSON syntax

    • Example: [{"firmware": "","buildtime": "2023-01-25 12:41","gitbranch": "HEAD","gittag": "","gitrevision": "af13c68+","html": "Development-Branch: HEAD (Commit: af13c68+)","cputemp": "64","hostname": "WaterMeterTest","IPv4": "192.168.xxx.xxx","freeHeapMem": "2818330"}]
  • starttime

    Show starttime

    • Example: 20230113-154634
  • uptime

    Show uptime

    • Example: 0d 00h 15m 50s

Camera

  • lighton

    Switch the camera flashlight on

  • lightoff

    Switch the camera flashlight off

  • capture

    Capture a new image (without flashlight)

  • capture_with_flashlight

    Capture a new image with flashlight

  • save

    Save a new image to SD card

    • The save entrypoint also support parameters:
    • http://<IP>/save?filename=test.jpg&delay=1

Logs

  • log

    Last part of todays log (last 80 kBytes))

  • logfileact

    Full log of today

  • log.html

    Opens the log html page

Diagnostics

  • heap

    print relevant memory (heap) information
    • Example: Heap info: Heap Total: 1888926 | SPI Free: 1827431 | SPI Larg Block: 1802240 | SPI Min Free: 758155 | Int Free: 61495 | Int Larg Block: 55296 | Int Min Free: 36427