Slawomir Lipka asked 6 months ago
Hi,
I am trying to send temperature readings from three DS18B20 sensors to MQTT using your tutorials. In order to distinguish individual sensors, I wanted the data to be sent in separate topics, which would be the addresses of individual sensors. For example, “esp/ds18b20/temperature/28DE58B0A021015E”. Unfortunately, I have a problem with using the sensor address that I generate using the printAddress(tempDeviceAddress) function to create the appropriate topic. How should I generate a string containing the address of the sensor so that I can use it to create the appropriate topic?
Many Thanks, Slawek
Sara Santos Staff answered 6 months ago
Hi.
First, you need to convert the address to a string.
What is the original variable type of the address? How are you getting the board address?
Then, you just need to concatenate the topic with the string that contains the address.
Regards,
Sara