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</script></head><body><noscript><link rel="stylesheet" type="text/css" href="../common/css/print.css" /><div id="noscript">JavaScript is disabled on your browser. Please enable JavaScript to enjoy all the features of this site.</div></noscript><div id="header"><a href="http://www.atmel.com/webdoc"><img id="logo" alt="Atmel Logo" src="../common/images/logo.png" /></a><h1>Atmel EDBG-based Tools Protocols<br />AVR ISP protocol</h1><div id="navheader"><!----><table class="navLinks"><tr><td><a title="Hide TOC tree" tabindex="5" class="pointLeft" onclick="myLayout.toggle('west')" href="#" id="showHideButton">Sidebar
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<a tabindex="5" class="navLinkNext" accesskey="n" href="ch07s01.html">Next</a></td></tr></table></div></div><div id="content"><!----><div class="chapter"><div xmlns="" class="titlepage"><div><div><h1 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="protocoldocs.avrispprotocol" />AVR ISP protocol</h1></div></div></div><div xmlns="http://www.w3.org/1999/xhtml" class="toc"><p xmlns="http://www.w3.org/1999/xhtml"><strong>Table of Contents</strong></p><dl xmlns="http://www.w3.org/1999/xhtml" class="toc"><dt><span class="section"><a href="ch07s01.html">SPI programming protocol commands</a></span></dt><dt><span class="section"><a href="ch07s02.html">SPI programming protocol responses</a></span></dt><dt><span class="section"><a href="ch07s03.html">ID definitions</a></span></dt></dl></div><p>The AVR ISP protocol is based upon the communication protocol used by all Atmel
AVR tools as far back as the STK500. It is used for programming tinyAVR and megaAVR devices
using the SPI interface</p><p>Timing parameter
values are extracted from XML files and included in the protocol command function
calls.</p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3><p>This protocol is also described in the Application Note <a class="link" href="http://www.atmel.com/Images/doc8015.pdf" target="_top">AVR069: AVRISP mkII
Communication Protocol</a>, although not all commands are supported. The
SPI_MULTI command is not supported by this implementation.</p></div><p>The protocol commands are put in the payload of EDBG commands with the handler
set to SPI. The responses are also sent as the payload of EDBG commands.</p><p>Note that the SPI protocol has no CMD_ACTIVATE_PHYSICAL. The ENTER_PROGMODE command will
enable the physical and LEAVE_PROGMODE will deactivate it.</p><p>The SPI_MULTI command is not supported by this implementation.</p><p>In addition to the SPI commands the general CMD_LOAD_ADDRESS from the STK500 communication
protocol is supported. This command is used to set the start address for the following write
or read command. This command is described below.</p></div><script src="../common/main.js" type="text/javascript"><!----></script><script src="../common/splitterInit.js" type="text/javascript"><!----></script><div class="navfooter"><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="ch06s06.html">Prev</a>&nbsp;</td><td align="center" width="20%">&nbsp;</td><td align="right" width="40%">&nbsp;<a accesskey="n" href="ch07s01.html">Next</a></td></tr><tr><td valign="top" align="left" width="40%">&nbsp;</td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td valign="top" align="right" width="40%">&nbsp;</td></tr></table></div></div><div id="sidebar"><div style="padding-top:3px;" id="leftnavigation"><div id="tabs"><ul><li><a tabindex="1" style="outline:0;" href="#treeDiv"><span class="contentsTab">Contents</span></a></li><li><a onclick="doSearch()" tabindex="1" style="outline:0;" href="#searchDiv"><span class="searchTab">Search</span></a></li></ul><div id="treeDiv"><img style="display:block;" id="tocLoading" alt="loading table of contents..." src="../common/images/loading.gif" /><span class="dochome"><a href="../index.html" tabindex="1">Documentation Home</a></span><span class="root"><a href="index.html" tabindex="1">Atmel EDBG-based Tools Protocols</a></span><div style="display:none" id="ulTreeDiv"><ul class="filetree" id="tree"><li><span class="file"><a tabindex="1" href="pr01.html">Preface</a></span></li><li><span class="file"><a tabindex="1" href="protocoldocs.Introduction.html">Introduction</a></span><ul><li><span class="file"><a tabindex="1" href="ch01s01.html">EDBG interface overview</a></span></li><li><span class="file"><a tabindex="1" href="ch01s02.html">Atmel EDBG-based tool implementations</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="protocoldocs.cmsis_dap.html">CMSIS-DAP</a></span><ul><li><span class="file"><a tabindex="1" href="ch02s01.html">CMSIS-DAP protocol</a></span></li><li><span class="file"><a tabindex="1" href="ch02s02.html">CMSIS-DAP vendor commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch02s02s01.html">AVR-target specific vendor commands</a></span></li><li><span class="file"><a tabindex="1" href="ch02s02s02.html">ARM-target specific vendor commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch02s02s02s01.html">Erase pin</a></span></li><li><span class="file"><a tabindex="1" href="ch02s02s02s02.html">Serial trace</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch02s02s03.html">EDBG-specific vendor commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch02s02s03s01.html">Get configuration</a></span></li><li><span class="file"><a tabindex="1" href="ch02s02s03s02.html">Set configuration</a></span></li><li><span class="file"><a tabindex="1" href="ch02s02s03s03.html">EDBG GET request</a></span></li><li><span class="file"><a tabindex="1" href="ch02s02s03s04.html">EDBG SET request</a></span></li></ul></li></ul></li><li><span class="file"><a tabindex="1" href="section_serial_trace.html">Serial trace commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch02s03s01.html">Set transport mode</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s02.html">Set capture mode</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s03.html">Set baud rate</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s04.html">Start</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s05.html">Stop</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s06.html">Get data</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s07.html">Get status</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s08.html">Get buffer size</a></span></li><li><span class="file"><a tabindex="1" href="ch02s03s09.html">Signon</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch02s04.html">Enveloped AVR commands, responses &amp; events</a></span><ul><li><span class="file"><a tabindex="1" href="ch02s04s01.html">Wrapping AVR commands</a></span></li><li><span class="file"><a tabindex="1" href="ch02s04s02.html">Unwrapping AVR responses</a></span></li><li><span class="file"><a tabindex="1" href="ch02s04s03.html">Unwrapping AVR events</a></span></li></ul></li></ul></li><li><span class="file"><a tabindex="1" href="protocoldocs.edbg_ctrl_protocol.html">EDBG Control Protocol</a></span><ul><li><span class="file"><a tabindex="1" href="ch03s01.html">Protocol commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch03s01s01.html">QUERY</a></span><ul><li><span class="file"><a tabindex="1" href="section_edbg_query_contexts.html">EDBG QUERY contexts</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch03s01s02.html">SET</a></span></li><li><span class="file"><a tabindex="1" href="ch03s01s03.html">GET</a></span><ul><li><span class="file"><a tabindex="1" href="ch03s01s03s01.html">SET/GET parameters</a></span></li></ul></li></ul></li><li><span class="file"><a tabindex="1" href="ch03s02.html">Responses</a></span><ul><li><span class="file"><a tabindex="1" href="ch03s02s01.html">OK</a></span></li><li><span class="file"><a tabindex="1" href="ch03s02s02.html">LIST</a></span></li><li><span class="file"><a tabindex="1" href="ch03s02s03.html">DATA</a></span></li><li><span class="file"><a tabindex="1" href="ch03s02s04.html">FAILED</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="section_edbg_ctrl_setget_params.html">EDBGCTRL ID definitions</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="protocoldocs.avrprotocol.Overview.html">AVR communication protocol</a></span><ul><li><span class="file"><a tabindex="1" href="ch04s01.html">Overview</a></span></li><li><span class="file"><a tabindex="1" href="ch04s02.html">Framing</a></span></li><li><span class="file"><a tabindex="1" href="ch04s03.html">Protocol sub-set overview</a></span></li><li><span class="file"><a tabindex="1" href="ch04s04.html">Discovery Protocol Definition</a></span><ul><li><span class="file"><a tabindex="1" href="ch04s04s01.html">CMD: QUERY</a></span></li><li><span class="file"><a tabindex="1" href="section_jdx_m11_sl.html">Discovery QUERY contexts</a></span></li><li><span class="file"><a tabindex="1" href="ch04s04s03.html">RSP: LIST</a></span></li><li><span class="file"><a tabindex="1" href="ch04s04s04.html">RSP: FAILED</a></span></li><li><span class="file"><a tabindex="1" href="ch04s04s05.html">Discovery Protocol ID definitions</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch04s05.html">Housekeeping Protocol</a></span><ul><li><span class="file"><a tabindex="1" href="ch04s05s01.html">CMD: QUERY</a></span></li><li><span class="file"><a tabindex="1" href="section_i5v_3yz_rl.html">Housekeeping QUERY contexts</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s03.html">CMD: SET</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s04.html">CMD: GET</a></span></li><li><span class="file"><a tabindex="1" href="section_t1f_hb1_sl.html">Housekeeping SET/GET parameters</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s06.html">Housekeeping Commands</a></span><ul><li><span class="file"><a tabindex="1" href="section_housekeeping_start_session.html">Start session</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s06s02.html">End Session</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s06s03.html">Firmware Upgrade</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s06s04.html">JTAG scan-chain detection</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s06s05.html">Calibrate Oscillator</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch04s05s07.html">Housekeeping Responses</a></span><ul><li><span class="file"><a tabindex="1" href="ch04s05s07s01.html">OK</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s07s02.html">LIST</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s07s03.html">DATA</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s07s04.html">FAILED</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch04s05s08.html">Events</a></span><ul><li><span class="file"><a tabindex="1" href="ch04s05s08s01.html">Event: power</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s08s02.html">Event: sleep</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s08s03.html">Event: external reset</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch04s05s09.html">
Hints and tips
</a></span></li><li><span class="file"><a tabindex="1" href="ch04s05s10.html">Housekeeping ID definitions</a></span></li></ul></li></ul></li><li><span class="file"><a tabindex="1" href="protocoldocs.avr32protocol.html">AVR32 generic protocol</a></span><ul><li><span class="file"><a tabindex="1" href="ch05s01.html">Protocol commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch05s01s01.html">QUERY</a></span><ul><li><span class="file"><a tabindex="1" href="section_qhb_x1c_sl.html">AVR32 QUERY contexts</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch05s01s02.html">SET</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s03.html">GET</a></span><ul><li><span class="file"><a tabindex="1" href="section_avr32_setget_params.html">SET/GET parameters</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch05s01s04.html">Activate Physical</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s05.html">Deactivate Physical</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s06.html">Get ID</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s07.html">Erase</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s08.html">Halt</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s09.html">Reset</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s10.html">Step</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s11.html">Read</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s12.html">Write</a></span><ul><li><span class="file"><a tabindex="1" href="section_avr32_memtypes.html">Memory Types</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch05s01s13.html">TAP</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s14.html">Is protected</a></span></li><li><span class="file"><a tabindex="1" href="ch05s01s15.html">Erase Section</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch05s02.html">Responses</a></span><ul><li><span class="file"><a tabindex="1" href="ch05s02s01.html">OK</a></span></li><li><span class="file"><a tabindex="1" href="ch05s02s02.html">LIST</a></span></li><li><span class="file"><a tabindex="1" href="ch05s02s03.html">ID</a></span></li><li><span class="file"><a tabindex="1" href="ch05s02s04.html">PC</a></span></li><li><span class="file"><a tabindex="1" href="ch05s02s05.html">DATA</a></span></li><li><span class="file"><a tabindex="1" href="ch05s02s06.html">FAILED</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch05s03.html">Hints and tips</a></span><ul><li><span class="file"><a tabindex="1" href="ch05s03s01.html">Configuration</a></span></li><li><span class="file"><a tabindex="1" href="ch05s03s02.html">Activate and deactivate physical</a></span></li><li><span class="file"><a tabindex="1" href="ch05s03s03.html">Programming and debugging commands</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch05s04.html">AVR32GENERIC ID definitions</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="protocoldocs.avr8protocol.html">AVR8 generic protocol</a></span><ul><li><span class="file"><a tabindex="1" href="ch06s01.html">Protocol Commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch06s01s01.html">QUERY</a></span><ul><li><span class="file"><a tabindex="1" href="section_avr8_query_contexts.html">AVR8 QUERY contexts</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch06s01s02.html">SET</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s03.html">GET</a></span><ul><li><span class="file"><a tabindex="1" href="section_avr8_setget_params.html">SET/GET parameters</a></span><ul><li><span class="file"><a tabindex="1" href="section_avr8_setget_params.html#N11932">Device context: debugWIRE targets</a></span></li><li><span class="file"><a tabindex="1" 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tabindex="1" href="ch06s01s12.html">Run To</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s13.html">Step</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s14.html">PC read</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s15.html">PC write</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s16.html">Prog Mode Enter</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s17.html">Prog Mode Leave</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s18.html">Disable debugWIRE</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s19.html">Erase</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s20.html">CRC</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s21.html">Memory Read</a></span></li><li><span class="file"><a tabindex="1" href="ch06s01s22.html">Memory Read masked</a></span></li><li><span class="file"><a tabindex="1" 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class="file"><a tabindex="1" href="ch06s02s04.html">DATA</a></span></li><li><span class="file"><a tabindex="1" href="ch06s02s05.html">FAILED</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch06s03.html">Events</a></span><ul><li><span class="file"><a tabindex="1" href="ch06s03s01.html">Event: Break</a></span></li><li><span class="file"><a tabindex="1" href="ch06s03s02.html">Event: IDR message</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="section_avr8_memtypes.html">Memory Types</a></span><ul><li><span class="file"><a tabindex="1" href="ch06s04s01.html">debugWIRE memtypes</a></span></li><li><span class="file"><a tabindex="1" href="ch06s04s02.html">megaAVR (JTAG) OCD memtypes</a></span></li><li><span class="file"><a tabindex="1" href="ch06s04s03.html">AVR XMEGA memtypes</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch06s05.html">Hints and tips:</a></span><ul><li><span class="file"><a tabindex="1" href="ch06s05s01.html">Configuration</a></span></li><li><span class="file"><a tabindex="1" href="ch06s05s02.html">Activate and deactivate physical</a></span></li><li><span class="file"><a tabindex="1" href="ch06s05s03.html">Programming session control</a></span></li><li><span class="file"><a tabindex="1" href="ch06s05s04.html">Debug session control</a></span></li><li><span class="file"><a tabindex="1" href="ch06s05s05.html">Flow control</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch06s06.html">AVR8GENERIC ID definitions</a></span></li></ul></li><li id="webhelp-currentid"><span class="file"><a tabindex="1" href="protocoldocs.avrispprotocol.html">AVR ISP protocol</a></span><ul><li><span class="file"><a tabindex="1" href="ch07s01.html">SPI programming protocol commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch07s01s01.html">SPI Load Address</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s02.html">SPI Set Baud</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s03.html">SPI Get Baud</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s04.html">SPI Enter Programming Mode</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s05.html">SPI Leave Programming Mode</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s06.html">SPI Chip Erase</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s07.html">SPI Program Flash</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s08.html">SPI Read Flash</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s09.html">SPI Program EEPROM</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s10.html">SPI Read EEPROM</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s11.html">SPI Program Fuse</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s12.html">SPI Read Fuse</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s13.html">SPI Program Lock</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s14.html">SPI Read Lock</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s15.html">SPI Read Signature</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s16.html">SPI Read OSCCAL</a></span></li><li><span class="file"><a tabindex="1" href="ch07s01s17.html">SPI Multi</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="ch07s02.html">SPI programming protocol responses</a></span></li><li><span class="file"><a tabindex="1" href="ch07s03.html">ID definitions</a></span></li></ul></li><li><span class="file"><a tabindex="1" href="protocoldocs.tpiprotocol.html">TPI Protocol</a></span><ul><li><span class="file"><a tabindex="1" href="ch08s01.html">TPI protocol commands</a></span><ul><li><span class="file"><a tabindex="1" href="ch08s01s01.html">TPI Enter Programming Mode</a></span></li><li><span class="file"><a tabindex="1" 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