I didn´t find a CayenneLPP pressure definition for RAK5801

WisBlock
1

Please include the following information, in order for us to help you as effectively as possible.

  • What product do you wish to discuss? RAK4631

  • What firmware are you using? Arduino BSP

  • Computer OS? Windows

  • What Computer OS version? Windows 11

@beegee ,

I was looking for in The RAKwireless_Standardized_Payload, a standard for RAK5801 but I can´t find a option. I found barometric pressure, but it isn´t the same: GitHub - RAKWireless/RAKwireless_Standardized_Payload: Payload description, payload decoder and example code for RAKwireless LoRaWAN devices

Any suggestion?

Claudio

2

The RAK5801 is a 4-20mA interface and can have any kind of sensor attached to it.
You can select any barometric pressure entry from the payload definitions, if your sensor is a barometric pressure sensore with 4-20mA interface.

The “Standardized Payload” was originally created for WisBlock Sensor Modules, then extended for SensorHub sensors.

3

I have a pressure transducer connected in the RAK5801, and the pressure unit can be PSI, BAR or Pascal.

In the Stadardized Payload load I found a lot of RAK Wisblock sensors, but I didn´t find one for pressure (I know it has barometric pressure, but it isn´t my case).

My point is to try reduce the effort in the decoder.

Any idea?

Claudio

4

The original CayenneLPP definitions are very limited, that’s why we added our own definitions.
For your pressure sensor, maybe you can use the “standard” analog input definition:

Type                 IPSO    LPP     Hex     Data Size   Data Resolution per bit
Analog Input        3202    2       2       2           0.01 Signed

Then for the channel number you can use any value you like, eg 05. The decoder will generate an analog_in_05 output.

This depends of course on the resolution you need.

5

Good morning,

Good idea, I will work with analog input.

Regards,

Claudio