BLE: STM32WB55CCU6 SHCI_C2_BLE_Init fail

[Leo Tai]

I am developing the BLE application on my custom PCB using MCU STM32WB55CCU6. However, it gets stuck in

 if (SHCI_C2_BLE_Init( &ble_init_cmd_packet ) != SHCI_Success)
 {
 Error_Handler();
 }

It returns SHCI_FUS_CMD_NOT_SUPPORTED instead of SHCI_Success so it jumps into the Error_Handler().

I tried to flash the FW into the nucleo board. It works perfectly fine. But it failed to initialise the BLE stack on my custom PCB. Therefore, I think it should be the hardware problem.

I checked HSE and LSE clk. They are initialised successfully and the waveforms can be observed in CRO. I am sure that they are oscillating.

Can anyone give me some advise on this issue? Thank you very much

[Leo Tai]

https://community.st.com/s/question/0D53W00000CQ1gqSAD/ble-stack-installation

According to the above question, one answer mentioned about the option bytes SFSA should be 0xCB if Full BLE Stack is installed. I checked the nucleo board and the SFSA value is 0xCB. However, if I look at the SFSA in my case, it was shown as 0xF6. It seems that I failed to install the BLE stack.

 

[Remi QUINTIN]

If SFSA was shown as 0xF6, then you have a very old FUS that needs to be upgraded to properly installed the most recent FW versions .

So, you first have to upgrade the FUS to version 1.0.2 using the stm32wb5x_FUS_fw_1_0_2.bin binary under the STM32Cube_FW_WB_V1.11.0\Projects\STM32WB_Copro_Wireless_Binaries\STM32WB5x directory. The SFSA should then be 0xF4.

Then execute the same with the stm32wb5x_FUS_fw.bin binary at the same location. The SFSA should not change with this second upgrade.

With this latest version (v1.1.0), you should get no error as more commands are supported.