Firmware Upgrade Procedure (Chip Already Programmed); Figure 14: Usb-To-Uart Dongle To Steval-Isb044V1 Connection; Figure 15: Dos Window: Download In Progress - ST STEVAL-ISB044V1 User Manual

UM2301
6 Follow the download progress in the DOS window and power the board off when
prompted.
3.2.2

Firmware upgrade procedure (chip already programmed)

If a chip has already been programmed with the firmware, the download mode is disabled
and special command needs to be sent to STWBC-EP to enable the download mode.
1
Supply the transmitter board via a power supply set to12 V.
2
Connect the USB-to-UART dongle to the transmitter board.
3
The STWBC-EP UART Rx/Tx signals are accessible on the transmitter board J501
connector, respectively on USB_DP and USB_DM (see
dongle to STEVAL-ISB044V1

Figure 14: USB-to-UART dongle to STEVAL-ISB044V1 connection

Figure 15: DOS window: download in progress

connection").
DocID031141 Rev 1
Download procedure
Figure 14: "USB-to-UART
17/57