Interface STM32L4 MCU with BLUENRG-M2SA Module via SPI

[Muyeez]

Hello ST Community,

I’m currently working on a project where I’m using the STM32L475RGT6 MCU to interface with the BlueNRG-M2SA Bluetooth module via SPI. The goal is to establish BLE communication between the MCU and a mobile device. However, I’ve encountered a few challenges and would appreciate guidance or reference material.

If anyone has:

• A working DTM firmware or BLE SPI reference for STM32L4 + BlueNRG-M2SA
• A minimal working .ioc + main.c + app_bluenrg_2.c
• Any tips on pin configuration, middleware integration, or BLE stack setup

[KDJEM.1]

Hello @Muyeez and welcome to the community;

May be these ressources can help you:

• BlueNRG-M2SA DTM stack BlueNRG-M2 | Product - STMicroelectronics  

You can find in the readme file the used pins for SPI:
- CS: DIO11
- MISO: DIO2
- MOSI: DIO3
- CLCK: DIO0
- IRQ: DIO7

• BLE module integration design guidelines: dt0142-ble-module-integration-design-guidelines--stmicroelectronics.pdf
• Datasheet of  BlueNRG-M2: Datasheet - BlueNRG-M2 - Very low power application processor module for Bluetooth® LE v5.2

Thank you.

Kaouthar

[Muyeez]

- CS: DIO11
- MISO: DIO2
- MOSI: DIO3
- CLCK: DIO0
- IRQ: DIO7 

i wanted to know the proper spi file which can make the module advertise and communicate with stm32l475rgt6 and it is a custom board. i have attached the schematic too in which i wanted to know is it correct if correct what could be the fault that im not able to communicate