Fix bootloaders not starting user application if the HWB is grounded during watchdog reset.

This commit is contained in:
Dean Camera
2014-10-12 16:43:30 +11:00
parent 4c637c93ba
commit a09cb7e3d8
9 changed files with 59 additions and 49 deletions
+7 -7
View File
@@ -61,9 +61,9 @@
*
* \section Sec_Running Running the Bootloader
*
* This bootloader is designed to be started via the HWB mechanism of the USB AVRs; ground the HWB pin (see device
* datasheet) then momentarily ground /RESET to start the bootloader. This assumes the HWBE fuse is set and the BOOTRST
* fuse is cleared.
* This bootloader is designed to be started via the \c HWB mechanism of the USB AVRs; ground the \c HWB pin (see device
* datasheet) then momentarily ground \c /RESET to start the bootloader. This assumes the \c HWBE fuse is set and the
* \c BOOTRST fuse is cleared.
*
* \section Sec_Installation Driver Installation
*
@@ -73,7 +73,7 @@
* \section Sec_HostApp Host Controller Application
*
* Due to licensing issues, the supplied bootloader is compatible with the HalfKay bootloader protocol designed
* by PJRC, but is non-compatible with the cross-platform loader GUI. A modified version of the open source
* by PJRC, but is <b>not compatible with the cross-platform loader GUI</b>. A modified version of the open source
* cross-platform TeensyLoader application is supplied, which can be compiled under most operating systems. The
* command-line loader application should remain compatible with genuine Teensy boards in addition to boards using
* this custom bootloader.
@@ -86,9 +86,9 @@
* \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
* Some USB AVR boards ship with the \c BOOTRST fuse set, causing the bootloader
* to run automatically when the device is reset. This booloader requires the
* \c BOOTRST be disabled and the HWBE fuse used instead to run the bootloader
* when needed.
*
* \section SSec_Options Project Options