{"id":3436,"date":"2010-12-13T13:48:18","date_gmt":"2010-12-13T19:48:18","guid":{"rendered":"http:\/\/mightyohm.com\/blog\/?page_id=3436"},"modified":"2011-02-04T22:17:33","modified_gmt":"2011-02-05T04:17:33","slug":"usage-instructions","status":"publish","type":"page","link":"https:\/\/mightyohm.com\/blog\/products\/hv-rescue-shield-2-x\/usage-instructions\/","title":{"rendered":"Usage Instructions"},"content":{"rendered":"
\n

To use the HV Rescue Shield 2:<\/h3>\n

Step 0:<\/h4>\n

Verify your Arduino is working and your IDE is properly configured.\u00a0 A simple blinking LED circuit is good for this.<\/p>\n

Step 1:<\/h4>\n

Download<\/a> and load the HVRescue_Shield sketch and install it in your Arduino working folder. \u00a0Open the Arduino IDE and click the “Upload” button.\u00a0 On older Arduinos, you’ll have to manually press the reset button on the Arduino first. \u00a0Note that if you have the Rescue Shield installed on the Arduino and a target AVR in one of the sockets, the upload will most likely fail. \u00a0Make sure the sockets are empty before uploading.<\/p>\n

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Step 2:<\/h4>\n

Install the Rescue Shield on the Arduino.\u00a0 Make sure there is no target AVR installed in either socket at this point.<\/strong> The red and green LEDs will glow briefly as the Arduino finishes its reset, but eventually the green READY LED should turn on.<\/p>\n

Step 3:<\/h4>\n

Click the “Serial Monitor” button at the top of the Arduino IDE window.\u00a0 It’s the rightmost button in the toolbar, a rectangle with an antenna sticking out the top.<\/p>\n

If interactive mode is enabled in the sketch, after a moment you should see a prompt to select a programming mode, as shown here:<\/p>\n

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The process shown here is the same for all programming modes. \u00a0If you want to program the fuses on an ATtiny2313, select mode 2. \u00a0If you want to program an 8-pin ATtiny, select mode 3 (HVSP mode).<\/p>\n

Step 4:<\/h4>\n

Select a mode by entering the corresponding number. \u00a0For example, here I have selected mode 1, ATmega mode.<\/p>\n

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Step 5:<\/h4>\n

Insert the target AVR into the corresponding socket.\u00a0 IC1 is for the 28-pin ATmega parts, IC2 is for the ATtiny2313, IC4 is for 8-pin ATtiny parts.<\/p>\n

Step 6:<\/h4>\n

Push the button on the Rescue Shield, it’s labeled GO!<\/p>\n

The red BURN LED should turn on and the Rescue Shield will report the fuse settings currently stored in the target AVR. \u00a0Then you will be prompted for new fuse values to send to the target.<\/p>\n

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Step 7:<\/h4>\n

Enter the fuse values, in the form “0xFF”.\u00a0 The leading “0x” is important (the fuse value parsing code is very simple).\u00a0 The default values for an ATmega168 are given as a suggestion.<\/p>\n

Enter the fuse values into the box above the serial window, and click “Send”.\u00a0 In this example, I am entering an LFUSE value of 0xC7.<\/p>\n

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Using the same procedure, enter the HFUSE value:<\/p>\n

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In this example, I entered 0xDF, the default HFUSE value for the ATmega168.<\/p>\n

If EFUSE support is enabled, you will need to enter a desired EFUSE value as well (not shown).<\/p>\n

Step 7:<\/h4>\n

The sketch will burn the desired fuses to the part, and then read the fuses back again to verify.\u00a0 When the process is done, you will see the message “Burn complete.” as shown below:<\/p>\n

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If the fuses read back match the ones you entered, you’re done!<\/p>\n

The red BURN LED will turn off when the burn process is finished, and the green READY LED will come back on.<\/p>\n

Once the BURN LED is out, remove the target AVR.\u00a0 You’re done!<\/p>\n

Notes:<\/h4>\n