Bootloaders/DFU/BootloaderDFU.txt

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   6
   7 /** \mainpage DFU Class USB AVR Bootloader
   8  *
   9  *  \section Sec_Compat Demo Compatibility:
  10  *
  11  *  The following list indicates what microcontrollers are compatible with this demo.
  12  *
  13  *  - Series 7 USB AVRs (AT90USBxxx7)
  14  *  - Series 6 USB AVRs (AT90USBxxx6)
  15  *  - Series 4 USB AVRs (ATMEGAxxU4)
  16  *  - Series 2 USB AVRs (AT90USBxx2, ATMEGAxxU2)
  17  *
  18  *  \section Sec_Info USB Information:
  19  *
  20  *  The following table gives a rundown of the USB utilization of this demo.
  21  *
  22  * <table>
  23  *  <tr>
  24  *   <td><b>USB Mode:</b></td>
  25  *   <td>Device</td>
  26  *  </tr>
  27  *  <tr>
  28  *   <td><b>USB Class:</b></td>
  29  *   <td>Device Firmware Update Class (DFU)</td>
  30  *  </tr>
  31  *  <tr>
  32  *   <td><b>USB Subclass:</b></td>
  33  *   <td>None</td>
  34  *  </tr>
  35  *  <tr>
  36  *   <td><b>Relevant Standards:</b></td>
  37  *   <td>USBIF DFU Class Standard, Atmel USB Bootloader Datasheet</td>
  38  *  </tr>
  39  *  <tr>
  40  *   <td><b>Usable Speeds:</b></td>
  41  *   <td>Full Speed Mode</td>
  42  *  </tr>
  43  * </table>
  44  *
  45  *  \section Sec_Description Project Description:
  46  *
  47  *  This bootloader enumerates to the host as a DFU Class device, allowing for DFU-compatible programming
  48  *  software to load firmware onto the AVR.
  49  *
  50  *  Out of the box this bootloader builds for the USB1287, and should fit into 4KB of bootloader space. If
  51  *  you wish to enlarge this space and/or change the AVR model, you will need to edit the BOOT_START and MCU
  52  *  values in the accompanying makefile.
  53  *
  54  *  When the bootloader is running, the board's LED(s) will flash at regular intervals to distinguish the
  55  *  bootloader from the normal user application.
  56  *
  57  *  \section Sec_Installation Driver Installation
  58  *
  59  *  This bootloader is designed to be compatible with Atmel's provided Windows DFU class drivers. You will need to
  60  *  install Atmel's DFU drivers prior to using this bootloader on Windows platforms. If you are using a 64 bit Windows
  61  *  OS, you will need to either disable the driver signing requirement (see online tutorials for details) or use a
  62  *  digitally signed version of the official Atmel driver provided by a third party AVR user at
  63  *  <a>http://www.avrfreaks.net/index.php?module=Freaks%20Academy&func=viewItem&item_id=2196&item_type=project</a>.
  64  *
  65  *  \note This device spoofs Atmel's DFU Bootloader USB VID and PID so that the Atmel DFU bootloader
  66  *        drivers included with FLIP will work. If you do not wish to use Atmel's ID codes, please
  67  *        manually change them in Descriptors.c and alter your driver's INF file accordingly.
  68  *
  69  *  \section Sec_HostApp Host Controller Application
  70  *
  71  *  This bootloader is compatible with Atmel's FLIP utility on Windows machines, and dfu-programmer on Linux machines.
  72  *
  73  *  \subsection SSec_FLIP FLIP (Windows)
  74  *
  75  *  FLIP (Flexible In-System Programmer) is a utility written by Atmel, and distributed for free on the Atmel website.
  76  *  The FLIP utility is designed to assist in the bootloader programming of a range of Atmel devices, through several
  77  *  popular physical interfaces including USB. It is written in Java, however makes use of native extensions for USB
  78  *  support and thus is only offered on Windows.
  79  *
  80  *  To program a device using FLIP, refer to the Atmel FLIP documentation.
  81  *
  82  *  \subsection SSec_DFUProgrammer dfu-programmer (Linux)
  83  *
  84  *  dfu-programmer is an open-source command line solution for the bootloader programming of Atmel devices through a
  85  *  USB connection, using the DFU protocol, available for download at <a>http://sourceforge.net/projects/dfu-programmer/</a>.
  86  *
  87  *  The following example loads a HEX file into the AVR's FLASH memory using dfu-programmer:
  88  *  \code
  89  *  dfu-programmer at90usb1287 erase flash Mouse.hex
  90  *  \endcode
  91  *
  92  *  \section Sec_Options Project Options
  93  *
  94  *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
  95  *
  96  *  <table>
  97  *   <tr>
  98  *    <td><b>Define Name:</b></td>
  99  *    <td><b>Location:</b></td>
 100  *    <td><b>Description:</b></td>
 101  *   </tr>
 102  *   <tr>
 103  *    <td>SECURE_MODE</td>
 104  *    <td>BootloaderDFU.h</td>
 105  *    <td>If defined to true, the bootloader will not accept any memory commands other than a chip erase on start-up, until an
 106  *        erase has been performed. This can be used in conjunction with the AVR's lockbits to prevent the AVRs firmware from
 107  *        being dumped by unauthorized persons.</td>
 108  *   </tr>
 109  *  </table>
 110  */
 111