I want to upgrade the firmware for the bluetooth stack on the STM32WB. It requires the device to be in boot loader mode and power from the user USB not ST-LINK usb. However I've not programmed a device in this way before, should it be programmed through the user USB interface, or should i use an ST-Link device and wire up SWDIO...etc to be able to connect to the device?
Instructions provided are below: but they make no reference to using ST-Link.
Following the instructions as is I cannot connect to the device (it doesnt appear in device management) when just connected via USB User.
Should I be using an ST-Link device in addition to the USB user? or any other suggestions?
STEP 1: Use STM32CubeProgrammer Version 1.4 or higher. It gives access to Firmware Upgrade Service (FUS) (AN 5185) through Bootloader. It is currently available as Command Line Interface (CLI) mode. STEP 2: Access to Bootloader USB Interface (system flash) Boot mode selected by Boot0 pin set to VDD For NUCLEO-WB55.Nucleo : Jumper between CN7.5(VDD) and CN7.7(Boot0) Power ON via USB_USER and Jumper J2(USB_MCU) For NUCLEO-WB55.USBDongle : Move switch SW2 to Boot0 Connect WB55.USBDongle STEP 3 : Delete current wireless stack : STM32_Programmer_CLI.exe -c port=usb1 -fwdelete STEP 4 : Download new wireless stack : STM32_Programmer_CLI.exe -c port=usb1 -fwupgrade [Wireless_Coprocessor_Binary] [Install@] firstinstall=1 Please check Binary Install Address Table for Install@ parameter depending of the binary. STEP 5 : Revert STEP 2 procedure to put back device in normal mode.