May I use Theengs to send data from MQTT broker to BLE devices?

Theengs OpenMQTTGateway
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1

Hi.
I’m learned on how to use Theengs OpenMQTT gateway to collect data from BLE sensors and send it to MQTT broker.
This works fine.
Anyway I need to send data from MQTT broker to BLE sensors (in the reverse path)
Is OpenMQTT useful for this purpose?
Any idea?
Thanks in advance

2

Hello,

You can write data to a device that accept it:

3

Hi.
Thanks for your reply.
Anyway, how must I confgure my BLE device (i.e. ESP32 device) so that it can accept write command from gateway ?
Could you provide me an example?

4

Hello,

You could try this example to have a BLE server:

1 Like
5

Hi.
The real problem is that I’d like to integrate all in Home Assistant and I don’t know how to connect a command like:

mosquitto_pub -t home/OpenMQTTGateway/commands/MQTTtoBT -m '{
  "ble_write_address":"AA:BB:CC:DD:EE:FF",
  "ble_write_service":"cba20d00-224d-11e6-9fb8-0002a5d5c51b",
  "ble_write_char":"cba20002-224d-11e6-9fb8-0002a5d5c51b",
  "ble_write_value":"TEST",
  "value_type":"STRING",
  "ttl":4,
  "immediate":true }'

to an HA switch.

In other words, I know how to issue the command from the command line but how may I link this command to an HA entity?
Any idea?