Need hardware and firmware recommendation for sub-1GHz radio project

[brian239955_stm1]

Hi,

 I'm starting a new project for a client that needs a sub-1 GHz transmitter and receiver. The distance between the 2 communicating devices will be fixed at approximately 5 ft apart. There will be potential obstructions of metal between the 2 devices. The data to communicate is 1-way only, and is just the value of a switch (open or closed). The receiver needs to detect the switch closing at the transmitter within 100 ms.

 Can you recommend hardware and firmware (including starting example code) that can handle these requirements?

 Is there an existing firmware protocol stack for something like this? I need to understand the firmware effort required.

 Thanks...

Brian

[Amel NASRI]

Hi @brian239955_stm1​ ,

In STM32Cube firmware packages, there are the 2 following dedicated examples for sub-1GHz application:

• STM32Cube_FW_L4\Projects\B-L475E-IOT01A\Applications\SubGhz
• STM32Cube_FW_WL\Projects\NUCLEO-WL55JC\Applications\SubGHz_Phy

This the software side, used hardware for each example is highlighted with blod characters.

-Amel