Application URL required
This function requires that an application URL is registered for the API user with this API call: https://docs.iotcreators.com/reference/register-application-url
Sends a base64 encoded downlink messages to the device.
This message can be used to send binary content to the device. The function requires base64 encoded payload as input for the element resourceValue. Before the payload is sent out to the device it is decoded to binary.
For protocols such as UDP and Neul/CoAP the downlink message is queued by the IoT adapter until the next uplink message of the device has been received. After this all queued messages are sent out to the device one per second.
Currently the following limitations are in place:
- Not more than 10 downlink messages can be queued before they are delivered to the device.
- The max. size of a downlink message is currently 512 bytes.