Stollmann BlueMod+B20, Руководство пользователя

Страница: 33 / 38

B20/BT2.1
User Guide
Release r03 www.stollmann.de Page 33 of 38
10 Firmware Upgrade
This chapter describes the firmware upgrade procedure for a B20 via RS232
or SPI.
The software used for the upgrade is able to run on the following Win32 platforms:
Windows XP
Windows Vista
Note: Testing was only carried out on Vista Ultimate and XP Professional platforms;
however experience suggests that the described software runs on all XP platforms
and all Vista 32-bit platforms.
10.1 Device Firmware Upgrade via Serial Interface
The DFU software package provides a tool for uploading firmware into a B20
via serial interface. The file name of the executable program consists of version and
patch information.
For example a firmware version 1.025 patched to SPP will result in the executable file
“fwb20sppav1025_dfu.exe”.
10.1.1 Prerequisites for Device Firmware Upgrade
You need to have access to the UART interface of B20.
DFU requires at least a 3-wire serial connection (UART_Rx, UART_Tx, GND) to the
PC without flow control. In this scenario DSR and UART_CTS have to be
connected to ground via 10k resistor.
Before starting the DFU software the baud rate of the B20 has to be set
to the default value (115,200 bps).
You need to have a correct DFU file for your B20.
If you want to upgrade your B20 with Stollmann B20 Updater,
the old firmware version needs to be at least 1.024 or later.
Firmware v1.023 or older cannot be updated to v1.024 or newer with DFU. The update
is only possible via SPI.