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| 1 | /** \file | ||
| 2 | * | ||
| 3 | * This file contains special DoxyGen information for the generation of the main page and other special | ||
| 4 | * documentation pages. It is not a project source file. | ||
| 5 | */ | ||
| 6 | |||
| 7 | /** \page Page_ProgrammingApps Programming an Application into a USB AVR | ||
| 8 | * | ||
| 9 | * Once you have built an application, you will need a way to program in the resulting ".HEX" file (and, if your | ||
| 10 | * application uses EEPROM variables with initial values, also a ".EEP" file) into your USB AVR. Normally, the | ||
| 11 | * reprogramming of an AVR device must be performed using a special piece of programming hardware, through one of the | ||
| 12 | * supported AVR programming protocols - ISP, HVSP, HVPP, JTAG, dW or PDI. This can be done through a custom programmer, | ||
| 13 | * a third party programmer, or an official Atmel AVR tool - for more information, see the <a>atmel.com</a> website. | ||
| 14 | * | ||
| 15 | * Alternatively, you can use the bootloader. From the Atmel factory, each USB AVR comes preloaded with the Atmel | ||
| 16 | * DFU (Device Firmware Update) class bootloader, a small piece of AVR firmware which allows the remainder of the | ||
| 17 | * AVR to be programmed through a non-standard interface such as the serial USART port, SPI, or (in this case) USB. | ||
| 18 | * Bootloaders have the advantage of not requiring any special hardware for programming, and cannot usually be erased | ||
| 19 | * or broken without an external programming device. They have disadvantages however; they cannot change the fuses of | ||
| 20 | * the AVR (special configuration settings that control the operation of the chip itself) and a small portion of the | ||
| 21 | * AVR's FLASH program memory must be reserved to contain the bootloader firmware, and thus cannot be used by the | ||
| 22 | * loaded application. | ||
| 23 | * | ||
| 24 | * If you wish to use the DFU bootloader to program in your application, refer to your DFU programmer's documentation. | ||
| 25 | * Atmel provides a free utility called FLIP which is USB AVR compatible, and an open source (Linux compatible) | ||
| 26 | * alternative exists called "dfu-programmer". | ||
| 27 | */ | ||
