I'm using the RAK811 library (downloaded in may 2021) in my devices (Arduino Uno with a RAK811-shield) and I have had no problem sending simple payloads to my application in The Things Network. They are picked up by my two local TTIG:s and I can check them in the TTN-Console (V2).
But I did get a little problem when I wanted to read from a set of DS18B20 temperature-sensors with CayenneLPP and then send the resulting lpp.buffer to my application with the rk_sendBytes() function in the RAK811 library. When I checked in my TTN-Console the payloads were not decoded to temperature-fields etc. The payload seemed to end with a random number of extra characters.
Example
- 016700E4026700E4036700E5 -> Correct string
- 016700E4026700E4036700E500294A4 -> Delivered by rk_sendBytes()
When I saw the result and had a closer look at the code I realized that the problem might be that the function that converts the lpp.buffer to a string doesn't add a finishing zero.
I have now added the extra line indicated in the code below to my RAK811.cpp:
I have tested my solution and it seems to be stable.
Might this be something that @rbricheno can fix?
I have also made a comment about this here: #6 (comment)
Pedbry
I'm using the RAK811 library (downloaded in may 2021) in my devices (Arduino Uno with a RAK811-shield) and I have had no problem sending simple payloads to my application in The Things Network. They are picked up by my two local TTIG:s and I can check them in the TTN-Console (V2).
But I did get a little problem when I wanted to read from a set of DS18B20 temperature-sensors with CayenneLPP and then send the resulting lpp.buffer to my application with the rk_sendBytes() function in the RAK811 library. When I checked in my TTN-Console the payloads were not decoded to temperature-fields etc. The payload seemed to end with a random number of extra characters.
Example
When I saw the result and had a closer look at the code I realized that the problem might be that the function that converts the lpp.buffer to a string doesn't add a finishing zero.
I have now added the extra line indicated in the code below to my RAK811.cpp:
I have tested my solution and it seems to be stable.
Might this be something that @rbricheno can fix?
I have also made a comment about this here: #6 (comment)
Pedbry