==== USBasp ====
<wrap right>
{{:interfaces:usbasp.jpg?200}}
\\ \\
{{:interfaces:usbasp2.jpg?200}}
</wrap>

USBasp is a USB interface adapter for ATMEL ISP.

This is a cheap programmer.

Some boards contain jumpers to disable power delivery to the
target device, otherwise they always supply power.

=== Linux ===

== udev ==
<code>
SUBSYSTEMS=="usb",\
    ATTRS{idVendor}=="16c0",\
    ATTRS{idProduct}=="05dc",\
    MODE:="0666"
</code>

== Update firmware ===

Generic USBASP comes with an old firmware, you can upgrade it using a USBtiny like this
<code>
avrdude -c usbtiny -p atmega8 -e -U flash:w:usbasp.atmega8.2011-05-28.hex

</code>

== Program ==
<code>
$ avrdude -c usbasp -B 5 -p m328p -D

avrdude: set SCK frequency to 187500 Hz
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e950f (probably m328p)

avrdude: safemode: Fuses OK (E:FD, H:DA, L:FF)

avrdude done.  Thank you.
</code>

=== Resources ===

[[https://www.fischl.de/usbasp/|Project page]]

[[http://www.fischl.de/usbasp/bilder/usbasp_circuit.png|Schematic]]

[[http://www.fischl.de/usbasp/usbasp.2011-05-28.tar.gz|Updated firmware]]