View source for Atmega328p

Info on the ATMega328p hardware:

<h2>data sheet</h2>
http://attie.co.uk/file/ATmega328p.pdf<br>

<h2>icsp pins</h2>

<h3>connecting to [[bus pirate]] for use with [[avrdude]]</h3>
{|
|-
|align="right" |brown
|style="background:rgb(157,98,66)" width="18px" |
|miso
|1
|width="10px" |
|2
|align="right" |vcc (3.3v)
|style="background:rgb(255,255,255)" style="border:solid 1px #000;" width="18px" |
|white
|-
|align="right" |yellow
|style="background:rgb(255,250,47)" |
|sck
|3
|
|4
|align="right" |mosi
|style="background:rgb(254,156,24)" |
|orange
|-
|align="right" |red
|style="background:rgb(255,13,13)" |
|reset
|5
|
|6
|align="right" |gnd
|style="background:rgb(0,0,0)" |
|black
|}
pin 2 can use the gray wire for 5v instead of 3.3v if your circuit is okay with that

<h2>pin mapping:</h2>
[[File:Atmega168PinMap2.png]]<br>
source: http://arduino.cc/en/Hacking/PinMapping168

<h2>firmwares:</h2>
The arduino environment comes with a few variations of the firmware (<code>&lt;path to arduino&gt;/hardware/arduino/bootloaders/atmega</code>)<br>
load them like this:<br>
<pre>
$ avrdude -c buspirate -P /dev/ttyUSB1 -p m328p -U flash:w:ATmegaBOOT_168_atmega328_pro_8MHz.hex
</pre>
This table shows which arduino (that I own...) uses which firmware<br>
{|
!Filename
!Processor
!Arduino Boards
|-
|ATmegaBOOT_168_diecimila.hex
|ATMega168 @ 16Mhz
|Diecimila, Duemilanove, Nano
|-
|ATmegaBOOT_168_atmega328_pro_8MHz.hex
|ATMega328p @ 8Mhz
|Pro Mini, Fio
|}

<h2>resources</h2>
https://www.mainframe.cx/~ckuethe/avr-c-tutorial/<br>
http://hintshop.ludvig.co.nz/show/buspirate-avr-programming/<br>
http://itp.nyu.edu/physcomp/uploads/6pinAVRproghead.jpg<br>
http://dangerousprototypes.com/bus-pirate-manual/<br>
http://www.ladyada.net/library/arduino/bootloader.html