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<title>AVRDUDE: 2.2 Programmers accepting extended parameters</title>
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<a name="Programmers-accepting-extended-parameters"></a>
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<table class="header" cellpadding="1" cellspacing="1" border="0">
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<tr><td valign="middle" align="left">[<a href="avrdude_2.html#Command-Line-Options" title="Beginning of this chapter or previous chapter"> << </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_3.html#Option-Descriptions" title="Previous section in reading order"> < </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_2.html#Command-Line-Options" title="Up section"> Up </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_5.html#Example-Command-Line-Invocations" title="Next section in reading order"> > </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_6.html#Terminal-Mode-Operation" title="Next chapter"> >> </a>]</td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left"> </td>
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<td valign="middle" align="left">[<a href="avrdude.html#Introduction" title="Cover (top) of document">Top</a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
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<td valign="middle" align="left">[Index]</td>
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<td valign="middle" align="left">[<a href="avrdude_abt.html#SEC_About" title="About (help)"> ? </a>]</td>
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</tr></table>
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<a name="Programmers-accepting-extended-parameters-1"></a>
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<h2 class="section">2.2 Programmers accepting extended parameters</h2>
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<dl compact="compact">
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<dt><code>JTAG ICE mkII/3</code></dt>
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<dt><code>AVR Dragon</code></dt>
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<dd>
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<p>When using the JTAG ICE mkII/3 or AVR Dragon in JTAG mode, the
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following extended parameter is accepted:
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</p><dl compact="compact">
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<dt><code>‘<samp>jtagchain=UB,UA,BB,BA</samp>’</code></dt>
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<dd><p>Setup the JTAG scan chain for <var>UB</var> units before, <var>UA</var> units
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after, <var>BB</var> bits before, and <var>BA</var> bits after the target AVR,
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respectively.
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Each AVR unit within the chain shifts by 4 bits.
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Other JTAG units might require a different bit shift count.
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</p></dd>
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</dl>
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</dd>
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<dt><code>AVR910</code></dt>
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<dd>
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<p>The AVR910 programmer type accepts the following extended parameter:
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</p><dl compact="compact">
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<dt><code>‘<samp>devcode=VALUE</samp>’</code></dt>
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<dd><p>Override the device code selection by using <var>VALUE</var>
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as the device code.
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The programmer is not queried for the list of supported
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device codes, and the specified <var>VALUE</var>
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is not verified but used directly within the
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<code>T</code> command sent to the programmer.
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<var>VALUE</var> can be specified using the conventional number notation of the
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C programming language.
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</p></dd>
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<dt><code>‘<samp>no_blockmode</samp>’</code></dt>
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<dd><p>Disables the default checking for block transfer capability.
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Use
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‘<samp>no_blockmode</samp>’ only if your ‘<samp>AVR910</samp>’
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programmer creates errors during initial sequence.
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</p></dd>
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</dl>
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</dd>
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<dt><code>Arduino</code></dt>
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<dd>
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<p>The Arduino programmer type accepts the following extended parameter:
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</p><dl compact="compact">
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<dt><code>‘<samp>attemps=VALUE</samp>’</code></dt>
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<dd><p>Overide the default number of connection retry attempt by using <var>VALUE</var>.
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</p></dd>
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</dl>
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</dd>
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<dt><code>BusPirate</code></dt>
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<dd>
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<p>The BusPirate programmer type accepts the following extended parameters:
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</p><dl compact="compact">
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<dt><code>‘<samp>reset=cs,aux,aux2</samp>’</code></dt>
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<dd><p>The default setup assumes the BusPirate’s CS output pin connected to
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the RESET pin on AVR side. It is however possible to have multiple AVRs
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connected to the same BP with MISO, MOSI and SCK lines common for all of them.
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In such a case one AVR should have its RESET connected to BusPirate’s
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<em>CS</em>
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pin, second AVR’s RESET connected to BusPirate’s
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<em>AUX</em>
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pin and if your BusPirate has an
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<em>AUX2</em>
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pin (only available on BusPirate version v1a with firmware 3.0 or newer)
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use that to activate RESET on the third AVR.
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</p>
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<p>It may be a good idea to decouple the BusPirate and the AVR’s SPI buses from
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each other using a 3-state bus buffer. For example 74HC125 or 74HC244 are some
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good candidates with the latches driven by the appropriate reset pin (cs,
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aux or aux2). Otherwise the SPI traffic in one active circuit may interfere
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with programming the AVR in the other design.
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</p>
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</dd>
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<dt><code>‘<samp>spifreq=<var>0..7</var></samp>’</code></dt>
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<dd><table>
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<tr><td width="5%"><code>0</code></td><td width="30%">30 kHz (default)</td></tr>
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<tr><td width="5%"><code>1</code></td><td width="30%">125 kHz</td></tr>
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<tr><td width="5%"><code>2</code></td><td width="30%">250 kHz</td></tr>
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<tr><td width="5%"><code>3</code></td><td width="30%">1 MHz</td></tr>
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<tr><td width="5%"><code>4</code></td><td width="30%">2 MHz</td></tr>
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<tr><td width="5%"><code>5</code></td><td width="30%">2.6 MHz</td></tr>
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<tr><td width="5%"><code>6</code></td><td width="30%">4 MHz</td></tr>
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<tr><td width="5%"><code>7</code></td><td width="30%">8 MHz</td></tr>
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</table>
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</dd>
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<dt><code>‘<samp>rawfreq=0..3</samp>’</code></dt>
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<dd><p>Sets the SPI speed and uses the Bus Pirate’s binary “raw-wire” mode instead
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of the default binary SPI mode:
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</p>
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<table>
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<tr><td width="5%"><code>0</code></td><td width="30%">5 kHz</td></tr>
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<tr><td width="5%"><code>1</code></td><td width="30%">50 kHz</td></tr>
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<tr><td width="5%"><code>2</code></td><td width="30%">100 kHz (Firmware v4.2+ only)</td></tr>
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<tr><td width="5%"><code>3</code></td><td width="30%">400 kHz (v4.2+)</td></tr>
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</table>
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<p>The only advantage of the “raw-wire” mode is that different SPI frequencies
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are available. Paged writing is not implemented in this mode.
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</p>
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</dd>
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<dt><code>‘<samp>ascii</samp>’</code></dt>
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<dd><p>Attempt to use ASCII mode even when the firmware supports BinMode (binary
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mode).
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BinMode is supported in firmware 2.7 and newer, older FW’s either don’t
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have BinMode or their BinMode is buggy. ASCII mode is slower and makes
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the above
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‘<samp>reset=</samp>’, ‘<samp>spifreq=</samp>’
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and
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‘<samp>rawfreq=</samp>’
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parameters unavailable. Be aware that ASCII mode is not guaranteed to work
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with newer firmware versions, and is retained only to maintain compatibility
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with older firmware versions.
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</p>
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</dd>
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<dt><code>‘<samp>nopagedwrite</samp>’</code></dt>
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<dd><p>Firmware versions 5.10 and newer support a binary mode SPI command that enables
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whole pages to be written to AVR flash memory at once, resulting in a
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significant write speed increase. If use of this mode is not desirable for some
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reason, this option disables it.
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</p>
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</dd>
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<dt><code>‘<samp>nopagedread</samp>’</code></dt>
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<dd><p>Newer firmware versions support in binary mode SPI command some AVR Extended
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Commands. Using the “Bulk Memory Read from Flash” results in a
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significant read speed increase. If use of this mode is not desirable for some
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reason, this option disables it.
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</p>
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</dd>
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<dt><code>‘<samp>cpufreq=<var>125..4000</var></samp>’</code></dt>
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<dd><p>This sets the <em>AUX</em> pin to output a frequency of <var>n</var> kHz. Connecting
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the <em>AUX</em> pin to the XTAL1 pin of your MCU, you can provide it a clock,
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for example when it needs an external clock because of wrong fuses settings.
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Make sure the CPU frequency is at least four times the SPI frequency.
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</p>
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</dd>
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<dt><code>‘<samp>serial_recv_timeout=<var>1...</var></samp>’</code></dt>
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<dd><p>This sets the serial receive timeout to the given value.
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The timeout happens every time avrdude waits for the BusPirate prompt.
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Especially in ascii mode this happens very often, so setting a smaller value
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can speed up programming a lot.
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The default value is 100ms. Using 10ms might work in most cases.
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</p>
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</dd>
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</dl>
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</dd>
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<dt><code>Micronucleus bootloader</code></dt>
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<dd>
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<p>When using the Micronucleus programmer type, the
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following optional extended parameter is accepted:
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</p><dl compact="compact">
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<dt><code>‘<samp>wait=<var>timeout</var></samp>’</code></dt>
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<dd><p>If the device is not connected, wait for the device to be plugged in.
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The optional <var>timeout</var> specifies the connection time-out in seconds.
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If no time-out is specified, AVRDUDE will wait indefinitely until the
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device is plugged in.
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</p></dd>
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</dl>
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</dd>
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<dt><code>Teensy bootloader</code></dt>
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<dd>
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<p>When using the Teensy programmer type, the
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following optional extended parameter is accepted:
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</p><dl compact="compact">
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<dt><code>‘<samp>wait=<var>timeout</var></samp>’</code></dt>
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<dd><p>If the device is not connected, wait for the device to be plugged in.
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The optional <var>timeout</var> specifies the connection time-out in seconds.
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If no time-out is specified, AVRDUDE will wait indefinitely until the
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device is plugged in.
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</p></dd>
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</dl>
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</dd>
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<dt><code>Wiring</code></dt>
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<dd>
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<p>When using the Wiring programmer type, the
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following optional extended parameter is accepted:
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</p><dl compact="compact">
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<dt><code>‘<samp>snooze=<var>0..32767</var></samp>’</code></dt>
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<dd><p>After performing the port open phase, AVRDUDE will wait/snooze for
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<var>snooze</var> milliseconds before continuing to the protocol sync phase.
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No toggling of DTR/RTS is performed if <var>snooze</var> > 0.
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</p></dd>
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</dl>
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</dd>
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<dt><code>PICkit2</code></dt>
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<dd><p>Connection to the PICkit2 programmer:
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</p><table>
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<tr><td width="5%"><code>(AVR)</code></td><td width="30%"><code>(PICkit2)</code></td></tr>
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<tr><td width="5%"><code>RST</code></td><td width="30%"><code>VPP/MCLR (1) </code></td></tr>
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<tr><td width="5%"><code>VDD</code></td><td width="30%"><code>VDD Target (2) -- possibly optional if AVR self powered </code></td></tr>
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<tr><td width="5%"><code>GND</code></td><td width="30%"><code>GND (3) </code></td></tr>
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<tr><td width="5%"><code>MISO</code></td><td width="30%"><code>PGD (4) </code></td></tr>
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<tr><td width="5%"><code>SCLK</code></td><td width="30%"><code>PDC (5) </code></td></tr>
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<tr><td width="5%"><code>OSI</code></td><td width="30%"><code>AUX (6) </code></td></tr>
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</table>
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<p>Extended command line parameters:
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</p><dl compact="compact">
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<dt><code>‘<samp>clockrate=<var>rate</var></samp>’</code></dt>
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<dd><p>Sets the SPI clocking rate in Hz (default is 100kHz). Alternately the -B or -i options can be used to set the period.
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</p></dd>
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<dt><code>‘<samp>timeout=<var>usb-transaction-timeout</var></samp>’</code></dt>
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<dd><p>Sets the timeout for USB reads and writes in milliseconds (default is 1500 ms).
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</p></dd>
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</dl>
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</dd>
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<dt><code>USBasp</code></dt>
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<dd><p>Extended parameters:
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</p><dl compact="compact">
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<dt><code>‘<samp>section_config</samp>’</code></dt>
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<dd><p>Programmer will erase
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configuration section with option ’-e’ (chip erase),
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rather than entire chip.
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Only applicable to TPI devices (ATtiny 4/5/9/10/20/40).
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</p></dd>
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</dl>
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</dd>
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<dt><code>xbee</code></dt>
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<dd><p>Extended parameters:
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</p><dl compact="compact">
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<dt><code>‘<samp>xbeeresetpin=<var>1..7</var></samp>’</code></dt>
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<dd><p>Select the XBee pin <code>DIO<1..7></code> that is connected to the MCU’s
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‘/RESET’ line. The programmer needs to know which DIO pin to use to
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reset into the bootloader. The default (3) is the <code>DIO3</code> pin
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(XBee pin 17), but some commercial products use a different XBee
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pin.
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</p>
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<p>The remaining two necessary XBee-to-MCU connections are not selectable
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- the XBee <code>DOUT</code> pin (pin 2) must be connected to the MCU’s
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‘RXD’ line, and the XBee <code>DIN</code> pin (pin 3) must be connected to
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the MCU’s ‘TXD’ line.
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</p></dd>
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</dl>
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</dd>
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<dt><code>serialupdi</code></dt>
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<dd><p>Extended parameters:
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</p><dl compact="compact">
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<dt><code>‘<samp>rtsdtr=low|high</samp>’</code></dt>
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<dd><p>Forces RTS/DTR lines to assume low or high state during the whole
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programming session. Some programmers might use this signal to
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indicate UPDI programming state, but this is strictly hardware
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specific.
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</p>
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<p>When not provided, driver/OS default value will be used.
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</p></dd>
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</dl>
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</dd>
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</dl>
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<hr>
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<table class="header" cellpadding="1" cellspacing="1" border="0">
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||
<tr><td valign="middle" align="left">[<a href="avrdude_2.html#Command-Line-Options" title="Beginning of this chapter or previous chapter"> << </a>]</td>
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||
<td valign="middle" align="left">[<a href="avrdude_3.html#Option-Descriptions" title="Previous section in reading order"> < </a>]</td>
|
||
<td valign="middle" align="left">[<a href="avrdude_2.html#Command-Line-Options" title="Up section"> Up </a>]</td>
|
||
<td valign="middle" align="left">[<a href="avrdude_5.html#Example-Command-Line-Invocations" title="Next section in reading order"> > </a>]</td>
|
||
<td valign="middle" align="left">[<a href="avrdude_6.html#Terminal-Mode-Operation" title="Next chapter"> >> </a>]</td>
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</tr></table>
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<p>
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