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How to write_page_buffer to page address greater than 64k?
I'm trying to adapt a bootloader so that it's compatible with AVR's with >64k program flash. The function for writing buffer to flash shown below. This function works fine as...
Saturday, 14 May 2016 - 23:47
How to verify bootloader is uploaded to correct memory block?
I have a bootloader that I want to confirm is uploaded to the correct location in memory.    Using Atmel Studio 6 I'm using an AT90USB1286 w/ 128k of flash and a 4096W...
Tuesday, 4 August 2015 - 17:04
Help me understand this SPI multi-slave setup & schematic
I need to share SPI between EEPROM & Switch Input w/ 74HC165's. I found some sample code and schematic that works great but I don't fully understand it. Please refer to the...
Friday, 20 March 2015 - 17:55
Schematic/details for STK600 power supply regulation!?
...I JUST finished uploading the final code for a prototype that is supposed to be shown at a trade show tomorrow. I'm using the STK600 inside the prototype unit. After I just...
Saturday, 25 January 2014 - 04:59
Code to have a switch toggle between four LED's
First off, I did do a search but couldn't find any answers or code to figure out exactly how to do this. Specifically I have an atmega2560 that is using one port for reading...
Wednesday, 22 January 2014 - 10:59
Encoding input from 8-position switch to use 3 pins
I want to use an ordinary 8-position rotary switch to select one of eight modes in the AVR. Instead of using an entire port I'm thinking I can use an external logic IC to encode 8...
Friday, 12 April 2013 - 20:36
tagging LED/transistor circuits on outputs to save I/O
I have a project w/ a smaller AVR and I need to conserve I/O pins. There are four outputs that will be used to control analog switches. Also there will be an LED corresponding to...
Friday, 1 March 2013 - 18:19
Boot sequence/initialization w/ LED's on SPI
I have a program that uses a bunch of switches and LED's on the SPI interface using MOSI/MISO and GPIO's for latching. The problem I have is when turning on the AVR the LED's go...
Friday, 1 March 2013 - 07:46
Stepping through multiple LED's w/ one switch
Ok I'm new to C and AVR's but have done a lot of studying and wanted to get ideas on this before proceeding. I want to have one switch to toggle through 4 LED's. Obviously this...
Thursday, 28 February 2013 - 10:10