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Downlink

A downlink is a message sent from the Cloud to the device. HARDWARIO Cloud supports three kinds of downlink message:

  • Data — send JSON commands your firmware decodes.
  • Config — change the device's configuration with app config commands.
  • Shell — run shell commands and read their responses.

To send a Data or Config downlink from the web interface, open the device's messages and click + SCHEDULE DOWNLINK in the top-right corner. Because the device is usually asleep to save power, a downlink is queued and delivered the next time it boots, sends an uplink, or polls the Cloud — so the response may not appear immediately.