Hello. I am trying to establish a working wireless communication between two radio units using S2-LP components.
Both units are an S2-LP development kit which includes a nucleo-L053R8board with a mounted STEVAL-F433V2 board.
The code is the example project included in the S2-LP DK_1.2.1 software package.
The specific project compiled is the SDK_BasicGeneric_A.c example project in the
\S2-LP DK_1.2.1\Projects\Projects_Cube\S2LPLibrary_Examples\MDK-ARM\STM32L053R8-Nucleo
directory. (running on Windows 10).
It is compiled and flashed into the components using Keil uVision V5.26.2.0
The transmitter unit is flashed with the SDK_BasicGeneric_A.c code (transmitter code) and the receiver unit is flashed with the SDK_BasicGeneric_B.c code (receiver code).
The issue is, while I manage to establish a one-way communication, the range of reception is extremely limited. Any distance between receiver and transmitter beyond about one meter causes loss of reception. The receiver reports a maximum RSSI of -79dBm when transmitter and receiver are close together (zero distance) and a minimum RSSI of -112dBm at the edge of the reception range (about a meter).
Changing the datarate did not seem to have any significant affect on the range, and local interference was pretty much eliminated.
As this is a long-range 433MHz communication device, we would like to resolve the issue and increase the range (we need at least 100-150 meters of reliable communication).
What can be done to increase the range and bring it to it's maximum potential? Is there a need for external amplification on transmission? or should the settings be change to achieve full range? (attached is the file SDK_BasicGeneric_A.c (transmitter code) we are using.
