X-NUCLEO-WB05KN1 Power Consumption

[JPortilha]

Hello, 

I am working with X-NUCLEO-WB05KN1 together with NUCLEO-U083RC. I had previously tested U0 consumption in Stop mode and I got around 1.5uA (using 3.3V supply and LSI). From the datasheet it says that STM32WB05KZ should be an ultra low-power MCU, however I am using the Beacon app from the X-CUBE-WB05N software package and I am getting measurements of around 37mA. Is this related with the SPI firmware (DTM binary) flashed into the shield to run the example? I would like to achieve a consumption on the uA scale, do I need to make my own firmware to the chip? If so, is there any example and how to communicate with my U0?

I am supplying 3.3V into the CN6 pin 4 and measuring with a multimeter so the ST-LINK is now being powered.

BR 

[Imen.D]

Hello ​@JPortilha ,

You can establish a connection between the NUCLEO-U083RC and a X-NUCLEO-WB05KN1 through UART, SPI. 

For that, you can use the X-CUBE-WB05N expansion software package with STM32CubeMX and get inspired from the example available on the package for the NUCLEO-U575ZI.

The SW package is offering two interface UART and SPI. The Low power one is the SPI.

Please have a look at these resources: 

• UM3406 for detailed information about how to build a new X-CUBE-WB05N project using STM32CubeMX.
• X-CUBE-WB05N SW package for STM32WB05xN Bluetooth® LE network coprocessor - stm32mcu

[JPortilha]

Hello, 

I have already read that documentation but it did not answered my question. The high consumption I am measuring is related with the available firmware of the software package? How can I make an application that puts the BLE coprocessor in low power mode?

BR

 

[azuq]

Any update regarding this issue? I am also using this nucleo board and I want to force the chip into Deepstop mode but I can not find the HCI API for this purpose.

[JPortilha]

Still no answer from ST.