Table of Contents
Bootloader
Bootloader for a firmware update from an SD card
If you want to make your own Unicard, you must load bootloader into the Unicard for a firmware update from an SD card. The DFU file (a binary file for loading the bootloader for a firmware update from an SD card) is available along with the source codes of the firmware Unicard on sourceforge:
DFU binary file of the bootloader.
DFU downloader for OS Windows.
Loading the DFU file
- needed software:
- Windows XP or newer
- the .dfu file
- DFU downloader for OS Windows
- needed hardware:
- an assembled Unicard
- a connecting cable USB-A/miniB
- a PC with Windows and USB
- 1 jumper
- description of loading the bootloader into a Unicard:
- install DFU downloader for Windows
- on the card itself, connect the pins labeled “BOOT” with the jumper
- connect the card to PC using a USB-A/miniB cable
- Windows will offer a driver installation, let it install automatically. If the drivers do not install automatically, install them manually from the DFU downloader folder.
- After the driver is installed, disconnect and reconnect the card to the USB
- From the program selection, run program … Program Files / STMicroelectronics / DfuSe / DfuSeDemo
- After running the program, all you care about is the frame in the bottom right called “Upgrade or Verify Action”
- Tick “Verify after download”
- Click on the icon at the bottom called “Choose…”
- Select the file with the bootloader (UNICARDmk3_IAP.dfu) and select open
- Back in the program click on “Upgrade” at the bottom
- If a message shows up with the message “Verify successful!” you are done
- Disconnect the USB cable, remove the BOOT connection and you can put your card into a Sharp
- After loading the bootloader you also have to load firmware into the Unicard
Guide with pictures for DfuSeDemo version 3.0.6
Connect the JUMPER labelled BOOT.
After installing the drivers “STM Device in DFU Mode” will appear in the device manager.
In “Available DFU Devices” we pick “STM Device in DFU Mode” and tick “Verify after download”.
Using the button “Choose” (1.) we load a DFU file. “File correctly loaded.” should appear in the information panel (2.).
After selecting buttons “Upgrade” and then “Yes” on the confirmation dialogue, the DFU file will run.
On the information panel you should be able to see the individual phases of the DFU file loading - “Erase Phase”.
On the information panel you should be able to see the individual phases of the DFU file loading - “Download Phase”.
After successfully loading the DFU file “Verify successful!” message should appear in the information panel.
Warning
When updating firmware MZ_ID firmware is not checked (to still allow the option of changing the Unicard firmware from one type of computer to another). Incorrectly matching firmware with a computer, on which the Unicard update is being done can damage your device.