Avrprog-metaboard: Unterschied zwischen den Versionen

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= What is AVRProg based on Metaboard? =

[[Bild:Avrprog-metaboard-photo-250.jpg|~~border|right~~|AVRProg]]

<div class="tright" style="clear:none">[[Bild:Avrprog-metaboard-photo-250.jpg|thumbnail|AVRProg]]</div>

AVRProg is an In System Programmer (ISP) for AVR microcontrollers. It is built on the breadboard area of [[metaboard]].

= Features =

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* Generates 1 MHz clock for programming devices which require external clock.

* Simple design, almost no additional components required.

* USBasp firmware ported to this hardware, AVR-Doper and ~~AVRminiProg will follow~~.

* USBasp and AVR-Doper firmware ported to this hardware, AVRminiProg will follow. A ported version of USBasp is included here, for AVR-Doper please download the original package (>= 2008-04-26) and compile for metaboard.

* Optional power supply for target.

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= Building the Programmer =

[[Bild:Avrprog-metaboard-bottom-250.jpg|~~border|right~~|Metaboard]]

<div class="tright" style="clear:none">[[Bild:Avrprog-metaboard-bottom-250.jpg|thumbnail|Metaboard]]</div>

Building the hardware should be straight forward, see the circuit diagram above and the image of the board's copper side on the right. Most

components are optional: If you don't want programming sockets, just skip

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hours of work, given a ready-made metaboard.

Once you have the hardware in place, you need to upload the firmware. The

Once you have the hardware in place, you need to upload the firmware. There

directory "USBasp-firmware" in the distributed package contains a modified version of Thomas Fischl's

are (currently) two choices: USBasp or AVR-Doper.

USBasp. The modifications include the generation of a 1 MHz clock, different

I/O pins for USB and the low SCK jumper, different CPU clock and switchable

If you decide for USBasp: The directory "USBasp-firmware" in the distributed package contains a modified

supply for programming sockets. Change to this directory and type

version of Thomas Fischl's USBasp. The modifications include the generation

of a 1 MHz clock, different I/O pins for USB and the low SCK jumper,

different CPU clock and switchable supply for programming sockets. Change to

this directory and type

make metaboard

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between normal (~ 200 kHz) and slow (~ 8 kHz) programming clock. The

programming clock must be less than 1/4 of the target's CPU clock.

If you decide for AVR-Doper: Download version 2008-04-26 or later, change to

the "firmware" directory and type

make metaboard

To upload the firmware, use

make usbaspload

(this target uses the appropriate options for avrdude).

= Download =

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A package with a PNG format circuit diagram can be downloaded here:

'''Download:''' [[Media:avrprog-metaboard-1.0.zip|avrprog-metaboard-1.0.zip]]

{|

|'''Download:''' || [[Media:avrprog-metaboard-1.1.zip|avrprog-metaboard-1.1.zip]]

|-

| || [[Media:avrprog-metaboard-1.0.zip|avrprog-metaboard-1.0.zip]]

|}

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