RF Communication between STM32F407VG disc1 board and a RF-Transceiver STEVAL-IKR002V2D

[Zayoud]

I'm currently working on a project based on transmitting RF.

The objective of the project is to develop a system which is able to communicate with another device based on RF transmission.

The system has to be able to provide RF communication at a frequency in all the sub-1 GHz range.

Now I am trying to use the STEVAL-IKR002V2D that covers the 315MHz, developed by STMicroelectronics, unfortunately I can't find any archive or project examples that use this module.

I would be very grateful if you could suggest me a module (transceiver) developed by ST that can cover all the frequencies needed (315MHz.433MHz.869MHz).

It would also be helpful if you could advise me how to use the STEVAL-IKR002V2D.

Many thanks in advance!

[Zayoud]

Hello again @Issamos

During my research I found 4 different transceivers:

1- STEVAL-IKR002V2D for the 315MHz band
2- STEVAL-IKR002V3D for the 433MHz band
3- STEVAL-IKR002V4D for the 868MHz band
4- STEVAL-IKR002V4B for the 868MHz range "includes documentation, firmware for STM32L and GUI".
I found this note on the link of the STEVAL-IKR002V4B, I think this module works with the STM32L series, and this make me not sure if it would work with the STM32WL series.

I also found 3 different boards for the microcontrollers:
1- NUCLEO-WL55JC1 for the high frequency band. RF frequency range from 865 to 928 MHz.
2- NUCLEO-WL55JC2 used for low frequency band. RF frequency range from 433 to 510 MHz.
3- B-L072Z-LRWAN1 it's STM32L0 Discovery Kit LoRa, Sigfox, low power wireless; frequency range: 860 MHz - 930 MHz
estore.st.com/b-l072z-lrwan1
Can you please help me to clarify this issue and choose the best suitable hardware for the project?
Thanks again for your help.
Best regards.
II

[Issamos]

Hello again @Zayoud  

The STM32WL55JCX is based on the STM32L4 that's why theSTEVAL-IKR002XXX works fine with the STM32WL55JCX. 

As a solution, I suggest you to use an STM32WL55JC1 or STM32WL55JC2 and add 2 modules of the STEVAL-IKR002XXX series wish will give you the opportunity to work in the other frequencies. ( for exemple you can use the STM32WL55JC1 with the STEVAL-IKR002V2D and STEVAL-IKR002V3D connect to the STM32WL using the SPI protocol.)

Best Regards.

II