How to parse MQTT subtopic with CR LF content?

Wi-Fi Module WizFi360
1

Hello!

I am subscribed to “subtopic/test” and connected to broker.

When receiving JSON-strings (prettified with CR LF), it’s difficult to parse.

EXAMPLE:

image

This is, what i receive via UART-RX:

subtopic/test -> {\r\n \"int": 219200,\r\n \"double\": 119836.64,\r\n \"string\": \"this is a string\"\r\n}\r\n

where the last CR LF marks the end of the message.

Unfortunately, the message lenght is not received via UART (which would be much easier to parse).

So, how do i know, when the message ends?

Any suggestions?

Best regards,
srcnuzn

2

Hello.

Sorry for the late reply.

Other customers who use WizFi360 usually use the Json string with characters for packet separation and data parsing.

How about designing a packet like above?

Please refer to it.

Thanks.
Best regards.