Add known-issues documentation section to the various LUFA bootloaders.

Bootloaders/CDC/BootloaderCDC.txt

@@ -161,6 +161,26 @@
  *  +----------------------------+ FLASHEND
  *  \endverbatim
  *
+ *  \section Sec_KnownIssues Known Issues:
+ *
+ *  \par On Linux machines, the CDC bootloader is unstable or inaccessible.
+ *  A change to the \c ModemManager module in many Linux distributions causes
+ *  this module to try to take control over inserted CDC devices, corrupting the
+ *  datastream. A UDEV rule is required to prevent this.
+ *  See <a href=https://groups.google.com/d/msg/lufa-support/CP9cy2bc8yo/kBqsOu-RBeMJ>here</a> for resolution steps.
+ *
+ *  \par On Linux machines, the CDC bootloader is inaccessible.
+ *  On many Linux systems, non-root users do not have automatic access to newly
+ *  inserted CDC devices. Root privileges or a UDEV rule is required to gain
+ *  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.

Bootloaders/DFU/BootloaderDFU.txt

@@ -181,6 +181,20 @@
  *  To make the bootloader function on smaller devices (those with a physical
  *  bootloader section of smaller than 6KB)
  *
+ *  \section Sec_KnownIssues Known Issues:
+ *
+ *  \par On Linux machines, the DFU bootloader is inaccessible.
+ *  On many Linux systems, non-root users do not have automatic access to newly
+ *  inserted DFU devices. Root privileges or a UDEV rule is required to gain
+ *  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.

Bootloaders/HID/BootloaderHID.txt

@@ -3,7 +3,7 @@
  *  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 HID Class USB AVR Bootloader
  *
  *  \section SSec_Compat Demo Compatibility:
@@ -28,7 +28,7 @@
  *   <td><b>USB Class:</b></td>
  *   <td>Human Interface Device Class (HID)</td>
  *  </tr>
- *  <tr> 
+ *  <tr>
  *   <td><b>USB Subclass:</b></td>
  *   <td>N/A</td>
  *  </tr>
@@ -44,13 +44,13 @@
  *  </tr>
  * </table>
  *
- *  \section SSec_Description Project Description: 
+ *  \section SSec_Description Project Description:
  *
  *  This bootloader enumerates to the host as a HID Class device, allowing for device FLASH programming through
  *  the supplied command line software, which is a modified version of Paul's TeensyHID Command Line loader code
  *  from PJRC (used with permission). This bootloader is deliberatley non-compatible with the properietary PJRC
  *  HalfKay bootloader GUI; only the command line interface software accompanying this bootloader will work with it.
- *  
+ *
  *  Out of the box this bootloader builds for the AT90USB1287 with an 8KB bootloader section size, and will fit
  *  into 2KB of bootloader space for the Series 2 USB AVRs (ATMEGAxxU2, AT90USBxx2) or 4KB of bootloader space for
  *  all other models. If you wish to alter this size and/or change the AVR model, you will need to edit the MCU,
@@ -74,6 +74,14 @@
  *  hid_bootloader_cli -mmcu=at90usb1287 Mouse.hex
  *  \endcode
  *
+ *  \section Sec_KnownIssues Known Issues:
+ *
+ *  \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 SSec_Options Project Options
  *
  *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.

Bootloaders/MassStorage/BootloaderMassStorage.txt

@@ -166,6 +166,27 @@
  *  +----------------------------+ FLASHEND
  *  \endverbatim
  *
+ *  \section Sec_KnownIssues Known Issues:
+ *
+ *  \par In some cases, the application is not fully loaded into the device.
+ *  Write-caching on some operating systems may interfere with the normal
+ *  operation of the bootloader. Write caching should be disabled when using the
+ *  Mass Storage bootloader, or the filesystem synced via an appropriate command
+ *  (such as the OS's normal disk ejection command) before disconnecting the device.
+ *
+ *  \par On Linux machines, written data may be corrupted.
+ *  Linux systems appear to attempt a full filesystem re-write when the virtual
+ *  firmware file of the bootloader is written to normally, causing corrupt
+ *  device programming. On Linux systems, new firmware should be copied over
+ *  in-place via the \c dd command on the virtual file to ensure the filesystem
+ *  is left intact.
+ *
+ *  \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.

Bootloaders/Printer/BootloaderPrinter.txt

@@ -154,6 +154,21 @@
  *  +----------------------------+ FLASHEND
  *  \endverbatim
  *
+ *
+ *  \section Sec_KnownIssues Known Issues:
+ *
+ *  \par On Linux machines, new firmware fails to be sent to the device via CUPS.
+ *  Only a limited subset of normal printer functionality is exposed via the
+ *  bootloader, causing CUPS to reject print requests from applications that
+ *  are unable to handle true plain-text printing. For best results, the low
+ *  level \c lpr command should be used to print new firmware to the bootloader.
+ *
+ *  \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.