/** \file * * This file contains special DoxyGen information for the generation of the main page and other special * documentation pages. It is not a project source file. */ /** \mainpage DFU Class USB AVR Bootloader * * \section Sec_Compat Demo Compatibility: * * The following list indicates what microcontrollers are compatible with this demo. * * - Series 7 USB AVRs (AT90USBxxx7) * - Series 6 USB AVRs (AT90USBxxx6) * - Series 4 USB AVRs (ATMEGAxxU4) * - Series 2 USB AVRs (AT90USBxx2, ATMEGAxxU2) * * \section Sec_Info USB Information: * * The following table gives a rundown of the USB utilization of this demo. * * * * * * * * * * * * * * * * * * * * * * *
USB Mode:Device
USB Class:Device Firmware Update Class (DFU)
USB Subclass:None
Relevant Standards:USBIF DFU Class Standard, Atmel USB Bootloader Datasheet
Usable Speeds:Full Speed Mode
* * \section Sec_Description Project Description: * * This bootloader enumerates to the host as a DFU Class device, allowing for DFU-compatible programming * software to load firmware onto the AVR. * * Out of the box this bootloader builds for the AT90USBUSB1287, and will fit into 4KB of bootloader space. * If you wish to enlarge this space and/or change the AVR model, you will need to edit the MCU, FLASH_SIZE_KB * and BOOT_SECTION_SIZE_KB values in the accompanying makefile. * * When the bootloader is running, the board's LED(s) will flash at regular intervals to distinguish the * bootloader from the normal user application. * * \section Sec_Installation Driver Installation * * This bootloader is designed to be compatible with Atmel's provided Windows DFU class drivers. You will need to * install Atmel's DFU drivers prior to using this bootloader on Windows platforms. If you are using a 64 bit Windows * OS, you will need to either disable the driver signing requirement (see online tutorials for details) or use a * digitally signed version of the official Atmel driver provided by a third party AVR user at * http://www.avrfreaks.net/index.php?module=Freaks%20Academy&func=viewItem&item_id=2196&item_type=project. * * \note This device spoofs Atmel's DFU Bootloader USB VID and PID so that the Atmel DFU bootloader * drivers included with FLIP will work. If you do not wish to use Atmel's ID codes, please * manually change them in Descriptors.c and alter your driver's INF file accordingly. * * \section Sec_HostApp Host Controller Application * * This bootloader is compatible with Atmel's FLIP utility on Windows machines, and dfu-programmer on Linux machines. * * \subsection SSec_FLIP FLIP (Windows) * * FLIP (Flexible In-System Programmer) is a utility written by Atmel, and distributed for free on the Atmel website. * The FLIP utility is designed to assist in the bootloader programming of a range of Atmel devices, through several * popular physical interfaces including USB. It is written in Java, however makes use of native extensions for USB * support and thus is only offered on Windows. * * To program a device using FLIP, refer to the Atmel FLIP documentation. * * \subsection SSec_DFUProgrammer dfu-programmer (Linux) * * dfu-programmer is an open-source command line solution for the bootloader programming of Atmel devices through a * USB connection, using the DFU protocol, available for download at http://sourceforge.net/projects/dfu-programmer/. * * The following example loads a HEX file into the AVR's FLASH memory using dfu-programmer: * \code * dfu-programmer at90usb1287 erase flash Mouse.hex * \endcode * * \section Sec_API User Application API * * Several user application functions for FLASH and other special memory area manipulations are exposed by the bootloader, * allowing the user application to call into the bootloader at runtime to read and write FLASH data. * * \warning The APIs exposed by the DFU class bootloader are \b NOT compatible with the API exposed by the official Atmel DFU bootloader. * * By default, the bootloader API jump table is located 32 bytes from the end of the device's FLASH memory, and follows the * following layout: * * \code * #define BOOTLOADER_API_CALL(Index) (void*)(((FLASHEND - 32) + (2 * Index)) / 2) * * void (*BootloaderAPI_ErasePage)(uint32_t Address) = BOOTLOADER_API_CALL(0); * void (*BootloaderAPI_WritePage)(uint32_t Address) = BOOTLOADER_API_CALL(1); * void (*BootloaderAPI_FillWord)(uint32_t Address, uint16_t Word) = BOOTLOADER_API_CALL(2); * uint8_t (*BootloaderAPI_ReadSignature)(uint16_t Address) = BOOTLOADER_API_CALL(3); * uint8_t (*BootloaderAPI_ReadFuse)(uint16_t Address) = BOOTLOADER_API_CALL(4); * uint8_t (*BootloaderAPI_ReadLock)(void) = BOOTLOADER_API_CALL(5); * void (*BootloaderAPI_WriteLock)(uint8_t LockBits) = BOOTLOADER_API_CALL(6); * * #define BOOTLOADER_MAGIC_SIGNATURE_START (FLASHEND - 2) * #define BOOTLOADER_MAGIC_SIGNATURE 0xDCFB * * #define BOOTLOADER_CLASS_SIGNATURE_START (FLASHEND - 4) * #define BOOTLOADER_DFU_SIGNATURE 0xDFB1 * * #define BOOTLOADER_ADDRESS_START (FLASHEND - 8) * #define BOOTLOADER_ADDRESS_LENGTH 4 * \endcode * * From the application the API support of the bootloader can be detected by reading the FLASH memory bytes located at address * \c BOOTLOADER_MAGIC_SIGNATURE_START and comparing them to the value \c BOOTLOADER_MAGIC_SIGNATURE. The class of bootloader * can be determined by reading the FLASH memory bytes located at address \c BOOTLOADER_CLASS_SIGNATURE_START and comparing them * to the value \c BOOTLOADER_CDC_SIGNATURE. The start address of the bootloader can be retrieved by reading the bytes of FLASH * memory starting from address \c BOOTLOADER_ADDRESS_START. * * \section Sec_Options Project Options * * The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value. * * * * * * * * * * * * *
Define Name:Location:Description:
SECURE_MODEBootloaderDFU.hIf defined to true, the bootloader will not accept any memory commands other than a chip erase on start-up, until an * erase has been performed. This can be used in conjunction with the AVR's lockbits to prevent the AVRs firmware from * being dumped by unauthorized persons.
*/