X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/1d49fc7dd829ecd49a286bcb4ec2c0ba46a0380c..refs/heads/master:/Bootloaders/DFU/BootloaderDFU.txt

diff --git a/Bootloaders/DFU/BootloaderDFU.txt b/Bootloaders/DFU/BootloaderDFU.txt
index b6ba45553..b2540a5b6 100644
--- a/Bootloaders/DFU/BootloaderDFU.txt
+++ b/Bootloaders/DFU/BootloaderDFU.txt
@@ -55,6 +55,30 @@
  *  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_Running Running the Bootloader
+ *
+ *  On the USB AVR8 devices, setting the \c HWBE device fuse will cause the bootloader to run if the \c HWB pin of
+ *  the AVR is grounded when the device is reset.
+ *
+ *  The are two behaviours of this bootloader, depending on the device's fuses:
+ *
+ *  <b>If the device's BOOTRST fuse is set</b>, the bootloader will run any time the system is reset from
+ *  the external reset pin, unless no valid user application has been loaded. To initiate the bootloader, the
+ *  device's external reset pin should be grounded momentarily.
+ *
+ *  <b>If the device's BOOTRST fuse is not set</b>, the bootloader will run only if initiated via a software
+ *  jump, or if the \c HWB pin was low during the last device reset (if the \c HWBE fuse is set).
+ *
+ *  For board specific exceptions to the above, see below.
+ *
+ *  \subsection SSec_XPLAIN Atmel Xplain Board
+ *  Ground the USB AVR JTAG's \c TCK pin to ground when powering on the board to start the bootloader. This assumes the
+ *  \c HWBE fuse is cleared and the \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
+ *  \subsection SSec_Leonardo Arduino Leonardo Board
+ *  Ground \c IO13 when powering the board to start the bootloader. This assumes the \c HWBE fuse is cleared and the
+ *  \c BOOTRST fuse is set as the HWBE pin is not user accessible on this board.
+ *
  *  \section Sec_Installation Driver Installation
  *
  *  This bootloader is designed to be compatible with Atmel's provided Windows DFU class drivers. You will need to
@@ -189,12 +213,6 @@
  *  access.
  *  See <a href=https://groups.google.com/d/msg/lufa-support/CP9cy2bc8yo/kBqsOu-RBeMJ>here</a> for resolution steps.
  *
- *  \par After loading an application, it is not run automatically on startup.
- *  Some USB AVR boards ship with the BOOTRST fuse set, causing the bootloader
- *  to run automatically when the device is reset. In most cases, the BOOTRST
- *  fuse should be disabled and the HWBE fuse used instead to run the bootloader
- *  when needed.
- *
  *  \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.