Editing Using The ISP Shield 2

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== ...To program the Arduino Bootloader onto an ATmega168/ATmega328 ==
 
== ...To program the Arduino Bootloader onto an ATmega168/ATmega328 ==
  
===  Initial setup: ===
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#Attach the ISP Shield 2.0 to the Arduino
#Begin with your Arduino, with the ISP shield NOT connected.
 
 
#Connect the Arduino to your computer and bring up the Arduino IDE
 
#Connect the Arduino to your computer and bring up the Arduino IDE
 
#If necessary, configure the Arduino IDE for your Arduino or Arduino clone
 
#If necessary, configure the Arduino IDE for your Arduino or Arduino clone
 
#In the '''File''' menu, select '''Examples''', and open the '''ArduinoISP''' sketch
 
#In the '''File''' menu, select '''Examples''', and open the '''ArduinoISP''' sketch
 
#Upload this sketch to your Arduino or Arduino clone
 
#Upload this sketch to your Arduino or Arduino clone
#Recommended: Disconnect the Arduino from your computer by unplugging the USB cable.
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#At this time place an ATmega168 or ATmega328 into the ZIF socket on the ISP Shield 2.0 and lock it in place
#Attach the ISP Shield 2.0 to the Arduino. If using Arduino Uno (or other varieties that have metal that can touch the ISP shield), put a piece of insulating tape on top of the USB connector of the Uno to prevent the bottom of the shield from shorting against the connector housing. (Or, use a [[Googly_Shield|Googly Shield]]!)
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#In the '''Tools''' menu, select '''Board''', and select either:
#Connect the Arduino to your computer.
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#* '''Arduino Duemilanove or Nano w/ ATmega328''' if you are programing an ATmega328
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#* '''Arduino Diecimila, Duemilanove, or Nano w/ ATmega168''' if you are programing an ATmega168
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#In the '''Tools''' menu, select '''Burn Bootloader''', and select '''w/ Arduino as ISP'''
  
=== For each AVR that you would like to burn: ===
 
#Place an ATmega168 or ATmega328 into the ZIF socket on the ISP Shield 2.0 and lock it in place
 
#Important: The lever of the ZIF socket corresponds to pin 1 on the Atmega328 — the side of the AVR with the "half-moon" indentation.
 
#In the '''Tools''' menu, select '''Board''', and select the type of board that you are burning the bootloader for. For example,
 
#* '''Arduino Uno''' if you are programing an ATmega328 for an Uno
 
#* '''Arduino Duemilanove or Nano w/ ATmega328''' if you are programing an ATmega328 for a Arduino or clone that clone uses an FTDI interface and has an ATmega328.
 
#Be sure to have J5 jumpered to YUP and J6 jumpered to NO WAY
 
#In the '''Tools''' menu, select '''Burn Bootloader''', and select '''w/ Arduino as ISP'''
 
  
 
== ...To program the Arduino Bootloader onto an ATmega168/ATmega328 located on an external target board ==
 
== ...To program the Arduino Bootloader onto an ATmega168/ATmega328 located on an external target board ==
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== ...To use the ISP Shield 2.0 in place of an AVR ISP ==
 
== ...To use the ISP Shield 2.0 in place of an AVR ISP ==
  
The ArduinoISP sketch mimics the [http://www.atmel.com/ Atmel] [http://www.atmel.com/dyn/products/tools_card.asp?tool_id=2726 AVRISP] programmer. You can use [http://savannah.nongnu.org/projects/avrdude avrdude] to upload compiled programs to an ATmega168/ATmega328 via the ISP Shield 2.0 ZIF socket or either of the ISP headers. With the Arduino IDE, you can upload sketches with the ISP Shield by pressing and holding the shift key before clicking the Upload icon.  Normally when you hover the mouse over the icon you will see "Upload".  When holding the shift key it will show "Upload Using Programmer."
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The ArduinoISP sketch mimics the [http://www.atmel.com/ Atmel] [http://www.atmel.com/dyn/products/tools_card.asp?tool_id=2726 AVRISP] programmer. The Arduino IDE won't let you use it to upload sketches, but you can use [http://savannah.nongnu.org/projects/avrdude avrdude] to upload compiled programs to an ATmega168/ATmega328 via the ISP Shield 2.0 ZIF socket or either of the ISP headers.
  
 
When using an Arduino and ArduinoISP in this capacity the avrdude programmer type should be set to 'avrisp'. If you are using Windows avrdude may not be able to use the Arduino unless it is attached to COM port 9 (COM9) or lower. To change the port number that a device is attached to first locate it in the Device Manager: in the '''System Properties''' control panel, select the '''Hardware''' tab, then click the '''Device Manager''' button, and finally expand the '''Ports (COM & LPT)''' item. Right click the appropriate device for your Arduino and select '''Properties''' option, select the '''Port Settings''' tab, and click the button labeled '''Advanced...'''. Select a new unused port in the '''COM Port Number''' drop-down selection box.
 
When using an Arduino and ArduinoISP in this capacity the avrdude programmer type should be set to 'avrisp'. If you are using Windows avrdude may not be able to use the Arduino unless it is attached to COM port 9 (COM9) or lower. To change the port number that a device is attached to first locate it in the Device Manager: in the '''System Properties''' control panel, select the '''Hardware''' tab, then click the '''Device Manager''' button, and finally expand the '''Ports (COM & LPT)''' item. Right click the appropriate device for your Arduino and select '''Properties''' option, select the '''Port Settings''' tab, and click the button labeled '''Advanced...'''. Select a new unused port in the '''COM Port Number''' drop-down selection box.
  
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Check the avrdude webpage for complete instructions and documentation regarding the use of avrdude.
  
  
Here is the AVRdude command to use to flash a chip using the shield:
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== Know Issue With Auto-Reset  ==
<code>
 
avrdude -c avrisp -p [TARGET CHIP NAME] -P [PORT] -b 19200 -U flash:w:[PATH TO COMPILED HEX FILE]
 
</code>
 
 
 
Check the avrdude webpage for complete instructions and documentation regarding the use of avrdude.
 
 
 
== Known Issue With Auto-Reset  ==
 
  
 
There is a [http://www.arduino.cc/playground/Code/MegaISP known issue] with auto-reset (a common feature on Arduino boards) and the ArduinoISP technique.  You may, for example, get the "not in sync: resp=0x15" error message.  If so, you may need to disable auto-reset.  The ISP Shield 2.0 has a resistor on board for this eventuality.
 
There is a [http://www.arduino.cc/playground/Code/MegaISP known issue] with auto-reset (a common feature on Arduino boards) and the ArduinoISP technique.  You may, for example, get the "not in sync: resp=0x15" error message.  If so, you may need to disable auto-reset.  The ISP Shield 2.0 has a resistor on board for this eventuality.
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http://cdn2.evilmadscience.com/wiki/ispshield/assy_v2/29.jpg
 
http://cdn2.evilmadscience.com/wiki/ispshield/assy_v2/29.jpg
 
== Known Issue With Arduino Uno ==
 
 
We have found the ISP shield to work well when situated on top of the Arduino Uno, if you add a small capacitor, 0.1 uF or so, between RST and GND on the ISP shield.  We recommend placing it into header J4, spanning from the leftmost pin (RST) to one of the two GND pins. (You may need to remove this capacitor when initially writing the ArduinoISP sketch).
 
 
This is similar to the technique recommended in the [http://arduino.cc/en/Tutorial/ArduinoISP ArduinoISP tutorial] of putting a 10 uF capacitor there, but also editing the ArduinoISP to account for the longer time constant associated with the larger capacitor.
 
 
== Recent changes; Arduino variants that (historically) did not work ==
 
 
* We have had two reports of the ArduinoISP method not working properly with the Arduino Mega 2560. This is due to a software problem, that may be fixed in future releases of the Arduino and/or ArduinoISP software.  Some software workarounds have been reported to work.
 
 
* Arduino IDE version 1.6.6 brings a number of improvements to the ArduinoISP process, which may address these issues. You can read more about that [https://petervanhoyweghen.wordpress.com/2015/07/21/arduinoisp-reliability-and-portability-improvements/ here].
 
 
== Arduino variants that probably still will not work ==
 
 
* The Arduino Yun does not connect the ArduinoISP control pins to the Digital I/O pins and will not work without custom wiring.
 

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