mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-11-27 19:16:40 +06:00
106 lines
4.1 KiB
Plaintext
106 lines
4.1 KiB
Plaintext
/** \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 HID Class USB AVR Bootloader
|
|
*
|
|
* \section SSec_Compat Demo Compatibility:
|
|
*
|
|
* The following list indicates what microcontrollers are compatible with this demo.
|
|
*
|
|
* \li Series 7 USB AVRs (AT90USBxxx7)
|
|
* \li Series 6 USB AVRs (AT90USBxxx6)
|
|
* \li Series 4 USB AVRs (ATMEGAxxU4)
|
|
* \li Series 2 USB AVRs (AT90USBxx2, ATMEGAxxU2)
|
|
*
|
|
* \section SSec_Info USB Information:
|
|
*
|
|
* The following table gives a rundown of the USB utilization of this demo.
|
|
*
|
|
* <table>
|
|
* <tr>
|
|
* <td><b>USB Mode:</b></td>
|
|
* <td>Device</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td><b>USB Class:</b></td>
|
|
* <td>Human Interface Device Class (HID)</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td><b>USB Subclass:</b></td>
|
|
* <td>N/A</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td><b>Relevant Standards:</b></td>
|
|
* <td>USBIF HID Class Standard \n
|
|
* Teensy Programming Protocol Specification</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td><b>Supported USB Speeds:</b></td>
|
|
* <td>Low Speed Mode \n
|
|
* Full Speed Mode</td>
|
|
* </tr>
|
|
* </table>
|
|
*
|
|
* \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 deliberately non-compatible with the proprietary 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,
|
|
* FLASH_SIZE_KB and BOOT_SECTION_SIZE_KB values in the accompanying makefile.
|
|
*
|
|
* \warning <b>THIS BOOTLOADER IS NOT SECURE.</b> Malicious entities can recover written data, even if the device
|
|
* lockbits are set.
|
|
*
|
|
* \section Sec_Running Running the Bootloader
|
|
*
|
|
* 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
|
|
*
|
|
* This bootloader uses the HID class driver inbuilt into all modern operating systems, thus no additional drivers
|
|
* need to be supplied for correct operation.
|
|
*
|
|
* \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 <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.
|
|
*
|
|
* Once compiled, programs can be loaded into the AVR's FLASH memory through the following example command:
|
|
* \code
|
|
* 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 \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
|
|
*
|
|
* The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
|
|
*
|
|
* <table>
|
|
* <tr>
|
|
* <td>
|
|
* None
|
|
* </td>
|
|
* </tr>
|
|
* </table>
|
|
*/
|