User manual

4.2.2 Changing firmware for Linux (AVRDUDE) users

1. Download and install “dfu-programmer” package (apt-get...).

2. Connect the programmer AVR-ISP-MK2 to the computer and press the upgrade button with a

sharp object (you can use a piece of thick wire or a needle).

3. Erase the microcontroller inside AVR-ISP-MK2 with the command:

dfu-programmer at90usb162 erase

4. Flash the firmware with:

dfu-programmer at90usb162 flash --debug 6 libUSB-AVRISP-MKII.hex

5. Create new file /etc/udev/avrisp.rules

SUBSYSTEM!="usb_device", ACTION!="add", GOTO="avrisp_end"

# Atmel Corp. JTAG ICE mkII

ATTR{idVendor}=="03eb", SYSFS{idProduct}=="2103", MODE="660", GROUP="dialout"

# Atmel Corp. AVRISP mkII

ATTR{idVendor}=="03eb", SYSFS{idProduct}=="2104", MODE="660", GROUP="dialout"

# Atmel Corp. Dragon

ATTR{idVendor}=="03eb", SYSFS{idProduct}=="2107", MODE="660", GROUP="dialout"

LABEL="avrisp_end"

In some kernels SYSFS module is disabled by default. There are two flags responsible and you can

enable SYSFS by manipulating one or both of the flags CONFIG_SYSFS and

CONFIG_SYSFS_DEPRECATED_V2. In most cases it might be better and faster to swap

SYSFS{idProduct} with ATTR{idProduct}.

6. Create a virtual link to the file and give it a rule priority

cd /etc/udev/rules.d

sudo ln ../avrisp.rules 60-avrisp.rules

7. Check you're in the dialout group

groups

8. Restart udev

sudo restart udev

That's it! You can test the connection following the tips on the next page.

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