Commit 1adf8174 authored by Dean Camera's avatar Dean Camera
Browse files

Add additional driver documentation to the AVRISP-MKII clone programmer project.

parent b01ebe2d
......@@ -12,7 +12,8 @@
* - Added support for the Arduino Leonardo board
* - Added new doxygen_upgrade and doxygen_create targets to the DOXYGEN build system module
* - Library Applications:
* - <i>None</i>
* - Added a different device serial number when the AVRISP-MKII Clone project is in libUSB compatibility mode, so that
* both the libUSB and Jungo drivers can be installed at the same time
*
* <b>Changed:</b>
* - Core:
......
......@@ -6,7 +6,7 @@
/** \mainpage AVRISP MKII Programmer Project
*
* \section Sec_Compat Project Compatibility:
* \section Sec_Compat Project Compatibility
*
* The following list indicates what microcontrollers are compatible with this project.
*
......@@ -15,7 +15,7 @@
* \li Series 4 USB AVRs (ATMEGAxxU4)
* \li Series 2 USB AVRs (AT90USBxx2, ATMEGAxxU2) - <i>8KB versions with reduced features only</i>
*
* \section Sec_Info USB Information:
* \section Sec_Info USB Information
*
* The following table gives a rundown of the USB utilization of this project.
*
......@@ -42,28 +42,55 @@
* </tr>
* </table>
*
* \section Sec_Description Project Description:
* \section Sec_Description Project Description
*
* Firmware for an Atmel Studio/AVRStudio compatible AVRISP-MKII clone programmer. This project will enable the USB
* Firmware for an Atmel Studio/AVR Studio compatible AVRISP-MKII clone programmer. This project will enable the USB
* AVR series of microcontrollers to act as a clone of the official Atmel AVRISP-MKII programmer, usable within
* Atmel Studio/AVRStudio or with any software capable of driving a real Atmel AVRISP-MKII programmer. In its most
* basic form, it allows for the programming of AVRs at the programmer's VCC voltage from within Atmel Studio/AVRStudio
* with no special hardware other than the USB AVR and the parts needed for the USB interface. If the user desires, more
* advanced circuits incorporating level conversion can be made to allow for the programming of 3.3V AVR designs.
* Atmel Studio/AVR Studio or with any software capable of driving a real Atmel AVRISP-MKII programmer. In its most
* basic form, it allows for the programming of AVR TINY, MEGA and XMEGA devices aat the programmer's VCC voltage from
* within Atmel Studio/AVR Studio with no special hardware other than the USB AVR and the parts needed for the USB
* interface. If the user desires, more advanced circuits incorporating level conversion can be made to allow for the
* programming of target AVRs running at a different voltage to the programmer.
*
* This device spoofs Atmel's official AVRISP-MKII device PID so that it remains compatible with Atmel's AVRISP-MKII
* drivers. When prompted, direct your OS to install Atmel's AVRISP-MKII drivers provided with Atmel Studio/AVRStudio.
* drivers. When prompted, direct your OS to install Atmel's AVRISP-MKII drivers provided with Atmel Studio/AVR Studio.
*
* Note that this design currently has the following limitations:
* - No reversed/shorted target connector detection and notification
* - A separate header is required for each of the ISP, PDI and TPI programming protocols that the user wishes to use
*
* On AVR models with an ADC converter, AVCC should be tied to 5V (e.g. VBUS) and the \c VTARGET_ADC_CHANNEL token should be
* set to an appropriate ADC channel number in the project makefile for VTARGET detection to operate correctly. On models
* without an ADC converter, VTARGET will report a fixed 3.3V level at all times.
* On AVR models with an ADC converter, the USB AVR's AVCC pin should be tied to 5V (e.g. VBUS) and the
* \c VTARGET_ADC_CHANNEL token should be set to an appropriate ADC channel number in the project makefile for VTARGET
* detection to operate correctly. On models without an ADC converter, VTARGET will report a fixed 3.3V level at all times
* which should allow the programmer to remain compatible at the protocol level with all AVR devices.
*
* While this application can be compiled for USB AVRs with as little as 8KB of FLASH, for full functionality 16KB or more
* of FLASH is required. On 8KB devices, ISP or PDI/TPI programming support can be disabled to reduce program size.
* of FLASH is required. On 8KB devices, ISP or PDI/TPI protocol programming support can be disabled to reduce program size.
*
* \section Sec_Installation Installation
* The programmer supports multiple platforms, both Windows and Linux.
*
* \subsection SSec_LinuxInstallation Linux Installation
* On Linux systems, the programmer should be usable out of the box with no special setup other than (on some systems)
* editing of the system permissions to allow the programmer to be used from a non-elevated (root) context. The programmer
* is compatible with the free open source AVRDude programming software project.
*
* \subsection SSec_WindowsInstallation Windows Installation
* On Windows systems, due to an unfortunate limitation of the USB AVR devices and the driver used in the official AVR
* Studio/Atmel Studio platform, the programmer cannot be made compatible with AVRDude and AVR Studio/Atmel Studio at the
* same time. Instead, the programmer will be compatible with the official Atmel software by default, with a recompilation
* with the \c LIBUSB_DRIVER_COMPAT token (see \ref Sec_Options) being required to use the alternative libUSB driver
* compatibility mode that will allow the programmer to work under AVRDude on Windows.
*
* If compiled for Atmel Studio/AVR Studio compatibility, install the Jungo device drivers that ship with the Atmel software.
* If compiled in the alternative libUSB compatibility mode for AVRDude use, install the libUSB drivers that are included
* with your compiled copy of AVRDude, or create them using the libUSB-Win32 (http://sourceforge.net/projects/libusb-win32)
* project.
*
* For convenience, the programmer will report two different serial numbers depending on the firmware compatibity mode, so
* that the correct driver can be installed for the matching firmware. If the \c RESET_TOGGLES_LIBUSB_COMPAT compile option
* is used (see \ref Sec_Options) this allows for an easy way to automatically switch device drivers along with the firmware
* compatibility mode.
*
* \section Sec_ISP ISP Connections
* Connections to the device for SPI programming (when enabled):
......@@ -292,8 +319,8 @@
* <tr>
* <td>LIBUSB_DRIVER_COMPAT</td>
* <td>AppConfig.h</td>
* <td>Define to switch to a non-standard endpoint scheme, breaking compatibility with AVRStudio under Windows but making
* the code compatible with software such as avrdude (all platforms) that use the libUSB driver.
* <td>Define to switch to a non-standard endpoint scheme, breaking compatibility with Atmel Studio/AVR Studio under Windows but
* making the code compatible with software such as avrdude (all platforms) that use the libUSB driver.
*
* \note This option is incompatible with \c RESET_TOGGLES_LIBUSB_COMPAT.</td>
* </tr>
......
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