16F684 AtoD problem

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  1. - 18th February 2009, 15:08 #1
    mackrackit's Avatar
    mackrackit
    mackrackit is offline SuperMod
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    Try commenting out these lines
    Code:
    ADCON1=%01110000

PORTA=$00

ADCON0=%00000001
    I think they may be causing a conflict.
    Dave
    Always wear safety glasses while programming.
  2. - 20th February 2009, 04:34 #2
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    hell_pk
    hell_pk is offline Junior Member
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    Default No luck

    Still no luck.The Analog channel pulls up before ADCIN command therefore something must be wrong with register configs.
    very frustrating!
  3. - 20th February 2009, 06:59 #3
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    mackrackit
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    Sorry for all the confusion, here is some tested code.
    I have it running right now.
    Code:
    <html>
<head></head>
<body><!--StartFragment--><pre><code><font color="#00FF00"><b><i>'16F684 ADCIN TEST

</i></b></font><font color="#008000">@  __config _INTRC_OSC_NOCLKOUT &amp; _WDT_ON &amp; _MCLRE_OFF &amp; _CP_OFF

</font><font color="#0000FF"><b>DEFINE </b></font><font color="#FF0000">ADC_BITS </font>8 <font color="#00FF00"><b><i>' Set number of bits in result
</i></b></font><font color="#0000FF"><b>DEFINE </b></font><font color="#FF0000">ADC_CLOCK </font>3 <font color="#00FF00"><b><i>' Set clock source (3=rc)
</i></b></font><font color="#0000FF"><b>DEFINE </b></font><font color="#FF0000">ADC_SAMPLEUS </font>50 <font color="#00FF00"><b><i>' Set sampling time in uS
</i></b></font><font color="#FF0000">TRISA</font>=%00000001
<font color="#FF0000">ANSEL</font>=%00000001
<font color="#FF0000">ADX</font>	<font color="#0000FF"><b>VAR</b></font>	<font color="#0000FF"><b>BYTE
</b></font><font color="#FF0000">START</font>:
<font color="#0000FF"><b>HIGH </b></font><font color="#FF0000">PORTC</font>.4
<font color="#0000FF"><b>PAUSE </b></font>250
<font color="#0000FF"><b>LOW </b></font><font color="#FF0000">PORTC</font>.4
<font color="#0000FF"><b>ADCIN </b></font>0, <font color="#FF0000">ADX
</font><font color="#0000FF"><b>PAUSE </b></font>250
<font color="#0000FF"><b>SEROUT2 </b></font><font color="#FF0000">PORTC</font>.5, 17197, [<font color="#0000FF"><b>DEC </b></font><font color="#FF0000">ADX</font>, $d, $a]
<font color="#0000FF"><b>GOTO </b></font><font color="#FF0000">START
</font></code></pre><!--EndFragment--></body>
</html>
    Dave
    Always wear safety glasses while programming.
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