How to parse MQTT subtopic with CR LF content?

Question

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: This is, what i receive via UART-RX: subtopic/test -> {
 "int": 219200,
 "double": 119836.64,
 "string": "this is a string"
}
 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

austin · Answer

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.