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90 lines
3.6 KiB
90 lines
3.6 KiB
16 years ago
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/** \file
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*
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* This file contains special DoxyGen information for the generation of the main page and other special
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* documentation pages. It is not a project source file.
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*/
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/** \mainpage AVRISP_Programmer
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*
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* Communications Device Class demonstration application.
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* This gives a simple reference application for implementing
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* a USB to Serial converter using the CDC class. Data communicated
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* over the USB Virtual Serial Port according to Atmel's AVR910
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* protocol is used to program AVR MCUs that are
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* "In-System Programmable via SPI Port".
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*
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* After running this firmware for the first time on a new computer,
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* you will need to supply the .INF file located in this demo
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* project's directory as the device's driver when running under
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* Windows. This will enable Windows to use its inbuilt CDC drivers,
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* negating the need for custom drivers for the device. Other
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* Operating Systems should automatically use their own inbuilt
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* CDC-ACM drivers.
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*
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* Usage:
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* avrdude -vv -F -P COM7 -c avr910 -p t261
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* Note -F flag which overrides signature check and enables programming
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* of any "In-System Programmable via SPI Port" AVR MCU. Part number,
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* t261, should be set to your target device.
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* avrdude -vv -F -P COM7 -c avr910 -p t261 -U flash:w:PROG.hex
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* PROG.hex is the hex file to program your t261 AVR with
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* avrdude -vv -F -P COM7 -b 115200 -c avr910 -p t261 -U flash:w:test.hex
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* The -b 115200 sets the SPI clock to 62.5kHz from the default 125kHz and may
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* work when the default programming speed fails.
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* AVROSP.exe -dATtiny261 -cCOM7 -rf
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* AVRosp is the Open Source AVR ISP Programming Software available from Atmel.com
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*
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* Note: on Linux systems, COM7 should be replaced with someting like /dev/ttyACM0
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* You can determine this value by running dmesg after plugging in the device
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* Note: you must RESET the programmer after each use (AVRdude session).
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*
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* Note: If you experience errors with older devices, try changing DELAY_LONG
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* to a larger value, such as 0xFF in AVRISP_Programmer.c
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*
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* MISO, MOSI, and SCK are connected directly from the AVRopendous board
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* to the pin of the same functionality on the target. RESET pin on the target
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* can be connected either to SS (PB0), or PC2. Do not have any other pins
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* connected - especially HWB pin, to avoid unintentional behaviour.
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*
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* AVR910 functionality was overlayed on USBtoSerial functionality.
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* Keep this in mind when looking over the code.
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* Default target speed is 125kHz and corresponds to 19200 baud, which
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* is the default setting for AVRdude.
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*
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* Changing "Baud-Rate" will change the SPI speed. Defualt SPI clock speed
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* is 8Mhz / 4 = 2MHz. 8Mhz is the device clock speed. This is the setting at
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* 9600 baud. The following is a table of baud-rate vs. SPI Speed that will result
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* 9600 = 2Mhz
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* 14400 = 1MHz
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* 19200 = 125kHz (AVRdude Default)
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* 38400 = 250kHz
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* 57600 = 500kHz
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* 115200 = 62.5kHz
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*
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*
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*
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*
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* <table>
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* <tr>
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* <td><b>USB Mode:</b></td>
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* <td>Device</td>
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* </tr>
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* <tr>
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* <td><b>USB Class:</b></td>
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* <td>Communications Device Class (CDC)</td>
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* </tr>
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* <tr>
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* <td><b>USB Subclass:</b></td>
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* <td>Abstract Control Model (ACM)</td>
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* </tr>
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* <tr>
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* <td><b>Relevant Standards:</b></td>
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* <td>USBIF CDC Class Standard</td>
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* </tr>
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* <tr>
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* <td><b>Usable Speeds:</b></td>
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* <td>Full Speed Mode</td>
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* </tr>
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* </table>
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*/
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