STM32Wb09 ACI or HCI communication with Host MCU

[teja_111]

Hello ST,

For our project, we would like to use STM32WB09KE chip as a Bluetooth MCU and would like to establish communication with the HOST MCU ex:- Stm32H5.

Do you have any protocol, how we can make communication both ways from the Main MCU to enable the Bluetooth stack and send advertising parameters during the run time and get the response back to the host?

Because, as a individual project - we can create an application for ble chip and run it independently, but in this case we would like to control the BLE chip from the host mcu by sending requests.

We can use UART/SPI for this purpose, but in detail do we need to send the ACI commands or HCI commands for enabling the BLE stack on the BLE chip?

IF you have an example, please provide us.

Thanks & Regards

PT

[STTwo-32]

Hello @teja_111 

Infact, such implementation was made for the STM32WB05 using the X-NUCLEO-WB05KN1. This shield can be connected to a NUCLEO Board and communicate throw SPI or UART. I think you may refer to this example for your implementation on the STM32WB09 and the STM32H5. You can also, follow the implementation on the X-CUBE-WB05N that includes BLE examples of communication between the shield X-NUCLEO-WB05KN1 and the NUCLEO-U575ZI-Q. That should be the best guide for your use case.

Best Regards.

STTwo-32