https://bitwizard.nl/wiki/index.php?action=history&feed=atom&title=Temperature_sensor_example 2026-04-05T21:27:34Z Revision history for this page on the wiki MediaWiki 1.35.6 https://bitwizard.nl/wiki/index.php?title=Temperature_sensor_example&diff=3131&oldid=prev 2015-09-07T13:48:38Z

<p><span dir="auto"><span class="autocomment">initialization</span></span></p> <table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:48, 7 September 2015</td> </tr><tr> <td colspan="2" class="diff-lineno">Line 12:</td> <td colspan="2" class="diff-lineno">Line 12:</td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> $ui -W 81:1000</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> $ui -W 81:1000</div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> $ui -w 82:6</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> $ui -w 82:6</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td class="diff-deletedline diff-side-deleted"><div> $<del class="diffchange diffchange-inline">io</del> -w 80:2</div></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> $<ins class="diffchange diffchange-inline">ui</ins> -w 80:2</div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>The above script is written for the SPI version of the board. The commented out like is for the i2c-version. So activate that line if you have the i2c version (remove the comment marker).</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>The above script is written for the SPI version of the board. The commented out like is for the i2c-version. So activate that line if you have the i2c version (remove the comment marker).</div></td> </tr> <!-- diff cache key wikidb:diff:wikidiff2:1.12:old-2784:rev-3131:1.13.0 --> </table>

Cartridge1987 https://bitwizard.nl/wiki/index.php?title=Temperature_sensor_example&diff=2784&oldid=prev 2014-05-07T07:00:26Z

<p><span dir="auto"><span class="autocomment">initialization</span></span></p> <table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 07:00, 7 May 2014</td> </tr><tr> <td colspan="2" class="diff-lineno">Line 6:</td> <td colspan="2" class="diff-lineno">Line 6:</td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> #!/bin/sh</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> #!/bin/sh</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_7_0_lhs">&#x26AB;</a></td> <td class="diff-addedline diff-side-added"><div><a name="movedpara_1_0_rhs"></a> <ins class="diffchange diffchange-inline">ui="</ins>bw_tool -a 94<ins class="diffchange diffchange-inline">"</ins></div></td> </tr> <tr> <td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_4_0_rhs">&#x26AB;</a></td> <td class="diff-deletedline diff-side-deleted"><div><a name="movedpara_2_0_lhs"></a> <del class="diffchange diffchange-inline">bw_tool -a 94</del> -w 70:c7 # internal tempsens with internal 1.1V as reference</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td class="diff-deletedline diff-side-deleted"><div> bw_tool -a 94 -<del class="diffchange diffchange-inline">w</del> <del class="diffchange diffchange-inline">71:c6 # external tempsens with internal</del> 1<del class="diffchange diffchange-inline">.1V as reference</del></div></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> <ins class="diffchange diffchange-inline">#ui="</ins>bw_tool -a 94 -<ins class="diffchange diffchange-inline">I</ins> <ins class="diffchange diffchange-inline">-D</ins> <ins class="diffchange diffchange-inline">/dev/i2c-</ins>1<ins class="diffchange diffchange-inline">"</ins></div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_2_0_lhs">&#x26AB;</a></td> <td class="diff-addedline diff-side-added"><div><a name="movedpara_4_0_rhs"></a> <ins class="diffchange diffchange-inline">$ui</ins> -w 70:c7 # internal tempsens with internal 1.1V as reference</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td class="diff-deletedline diff-side-deleted"><div> bw_tool -a 94 -W 81:1000</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> $ui -w 71:c6 # external tempsens with internal 1.1V as reference</div></td> </tr> <tr> <td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_1_0_rhs">&#x26AB;</a></td> <td class="diff-deletedline diff-side-deleted"><div><a name="movedpara_7_0_lhs"></a> bw_tool -a 94<del class="diffchange diffchange-inline"> -w 82:6</del></div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_5_0_lhs">&#x26AB;</a></td> <td class="diff-addedline diff-side-added"><div><a name="movedpara_8_0_rhs"></a> <ins class="diffchange diffchange-inline">$ui</ins> -W 81:1000</div></td> </tr> <tr> <td class="diff-marker"><a class="mw-diff-movedpara-left" title="Paragraph was moved. Click to jump to new location." href="#movedpara_10_1_rhs">&#x26AB;</a></td> <td class="diff-deletedline diff-side-deleted"><div><a name="movedpara_9_0_lhs"></a> <del class="diffchange diffchange-inline">bw_tool -a 94</del> -w 80:2</div></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> $ui -w 82:6</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker"><a class="mw-diff-movedpara-right" title="Paragraph was moved. Click to jump to old location." href="#movedpara_9_0_lhs">&#x26AB;</a></td> <td class="diff-addedline diff-side-added"><div><a name="movedpara_10_1_rhs"></a> <ins class="diffchange diffchange-inline">$io</ins> -w 80:2</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div>The above script is written for the SPI version of the board. The commented out like is for the i2c-version. So activate that line if you have the i2c version (remove the comment marker).</div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>== readout ==</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>== readout ==</div></td> </tr> <!-- diff cache key wikidb:diff:wikidiff2:1.12:old-2323:rev-2784:1.13.0 --> </table>

Rew https://bitwizard.nl/wiki/index.php?title=Temperature_sensor_example&diff=2323&oldid=prev 2012-12-03T15:21:16Z

<p><span dir="auto"><span class="autocomment">readout</span></span></p> <table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:21, 3 December 2012</td> </tr><tr> <td colspan="2" class="diff-lineno">Line 14:</td> <td colspan="2" class="diff-lineno">Line 14:</td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>== readout ==</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>== readout ==</div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td class="diff-deletedline diff-side-deleted"><div>The following is a script that shows the temperature on stdout. </div></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div>The following is a script that shows the temperature on stdout. <ins class="diffchange diffchange-inline"> I call this script "showtemp".</ins></div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-lineno">Line 50:</td> <td colspan="2" class="diff-lineno">Line 50:</td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> rawtemp=`sudo bw_tool -s 100000 -a 94 -R $register_to_read:s | tr a-z A-Z`</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> rawtemp=`sudo bw_tool -s 100000 -a 94 -R $register_to_read:s | tr a-z A-Z`</div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> (echo ibase=16; echo scale=3;echo $rawtemp \* $convfactor - $offsethex) | bc</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> (echo ibase=16; echo scale=3;echo $rawtemp \* $convfactor - $offsethex) | bc</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div>== display ==</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div>The following clears the screen and then shows the temperature. </div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> bw_tool -a 94 -w 10:0</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div> bw_tool -a 94 -t "temp: "`./showtemp`</div></td> </tr> <!-- diff cache key wikidb:diff:wikidiff2:1.12:old-2322:rev-2323:1.13.0 --> </table>

Rew https://bitwizard.nl/wiki/index.php?title=Temperature_sensor_example&diff=2322&oldid=prev 2012-12-03T15:17:32Z

<p><span dir="auto"><span class="autocomment">readout</span></span></p> <table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:17, 3 December 2012</td> </tr><tr> <td colspan="2" class="diff-lineno">Line 13:</td> <td colspan="2" class="diff-lineno">Line 13:</td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>== readout ==</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>== readout ==</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div>The following is a script that shows the temperature on stdout. </div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> #!/bin/sh</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> #!/bin/sh</div></td> </tr> <!-- diff cache key wikidb:diff:wikidiff2:1.12:old-2321:rev-2322:1.13.0 --> </table>

Rew https://bitwizard.nl/wiki/index.php?title=Temperature_sensor_example&diff=2321&oldid=prev 2012-12-03T15:17:07Z

<p><span dir="auto"><span class="autocomment">initialization</span></span></p> <table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:17, 3 December 2012</td> </tr><tr> <td colspan="2" class="diff-lineno">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>== initialization ==</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>== initialization ==</div></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><br /></td> </tr> <tr> <td colspan="2" class="diff-empty diff-side-deleted"></td> <td class="diff-marker" data-marker="+"></td> <td class="diff-addedline diff-side-added"><div>The following is a script that I use to initialize the temperature sensors for the rpi_ui board. </div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> #!/bin/sh</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> #!/bin/sh</div></td> </tr> <tr> <td colspan="2" class="diff-lineno">Line 8:</td> <td colspan="2" class="diff-lineno">Line 11:</td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> bw_tool -a 94 -w 82:6</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> bw_tool -a 94 -w 82:6</div></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div> bw_tool -a 94 -w 80:2</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div> bw_tool -a 94 -w 80:2</div></td> </tr> <tr> <td class="diff-marker" data-marker="−"></td> <td class="diff-deletedline diff-side-deleted"><br /></td> <td colspan="2" class="diff-empty diff-side-added"></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><br /></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><br /></td> </tr> <tr> <td class="diff-marker"></td> <td class="diff-context diff-side-deleted"><div>== readout ==</div></td> <td class="diff-marker"></td> <td class="diff-context diff-side-added"><div>== readout ==</div></td> </tr> <!-- diff cache key wikidb:diff:wikidiff2:1.12:old-2320:rev-2321:1.13.0 --> </table>

Rew https://bitwizard.nl/wiki/index.php?title=Temperature_sensor_example&diff=2320&oldid=prev 2012-12-03T15:16:31Z

<p>Created page with &quot; == initialization == #!/bin/sh bw_tool -a 94 -w 70:c7 # internal tempsens with internal 1.1V as reference bw_tool -a 94 -w 71:c6 # external tempsens with internal 1.1V as...&quot;</p> <p><b>New page</b></p><div><br /> == initialization ==<br /> <br /> #!/bin/sh<br /> bw_tool -a 94 -w 70:c7 # internal tempsens with internal 1.1V as reference<br /> bw_tool -a 94 -w 71:c6 # external tempsens with internal 1.1V as reference<br /> bw_tool -a 94 -W 81:1000<br /> bw_tool -a 94 -w 82:6<br /> bw_tool -a 94 -w 80:2<br /> <br /> <br /> == readout ==<br /> <br /> #!/bin/sh<br /> # <br /> #<br /> # Set the number of samples to 64, and shift by 0, or set the <br /> # number of samples to 4096 and shift by 6. The latter is recommended!<br /> #<br /> adcmaxval=65520<br /> #adcmaxval=1023<br /> #<br /> # MCP9700 degrees per volt. <br /> vperdeg=0.010<br /> #refvoltage=4.9000<br /> refvoltage=1.1000<br /> # mcp offset voltage is 500mv at 0 deg. At 0.010 volt per deg that comes to <br /> # 50 degrees C. <br /> offset=50<br /> #<br /> #<br /> # 60 adc channel 0, direct value (0-1023)<br /> # 68 adc channel 0, averaged value (0-65520 with nsamp=4096, shift=6)<br /> # 61 adc channel 1, direct value (0-1023)<br /> # 69 adc channel 1, averaged value (0-65520 with nsamp=4096, shift=6)<br /> register_to_read=69<br /> <br /> #<br /> # settings are done, now the preparations. <br /> convfactor=`(echo scale = 10 ; echo obase=16;echo $refvoltage / $vperdeg / $adcmaxval ) | bc`<br /> offsethex=`(echo obase=16; echo scale=3;echo $offset) | bc `<br /> <br /> <br /> # now do the real deal. <br /> rawtemp=`sudo bw_tool -s 100000 -a 94 -R $register_to_read:s | tr a-z A-Z`<br /> (echo ibase=16; echo scale=3;echo $rawtemp \* $convfactor - $offsethex) | bc</div>

Rew