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<DIV><FONT face=Arial size=2>Well.. I got this working.. not
as i would have liked to.. but it is working.. i found the application note on
their site for SPI to their digital potentiometers via a pic16f877.. which
is a diff processor then i'm using, but most of the code is the same.. after
making the appropriate changes to the code (registers n such), i loaded it up,
and have been hacking at it all day.. then i ran across another sample
code in there.. for firmware implementation.. so that what i tried..
works like a charm.. any ideas why my hardware SPI port never
worked tho? </FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=wberzinskas@nc.rr.com href="mailto:wberzinskas@nc.rr.com">Bill
Berzinskas</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=jays@aracnet.com
href="mailto:jays@aracnet.com">Jay Schwichtenberg</A> ; <A
title=synth-diy@dropmix.xs4all.nl
href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy@dropmix.xs4all.nl</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, March 14, 2005 11:42
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [sdiy] SPI Digital
Potentiomters and PIC 18.. not working.. help!</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>this is how my mssp registers are set..
</FONT></DIV>
<DIV><FONT face=Arial size=2>the other hardware does work.. i've got an
lcd hooked up</FONT></DIV>
<DIV><FONT face=Arial size=2>to it as well.. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> movlw
b'01000000' <BR> movwf
SSPSTAT </FONT></DIV>
<DIV><FONT face=Arial size=2> movlw
b'00100001' <BR> movwf SSPCON1
</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=jays@aracnet.com href="mailto:jays@aracnet.com">Jay
Schwichtenberg</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=synth-diy@dropmix.xs4all.nl
href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy@dropmix.xs4all.nl</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, March 14, 2005 10:40
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: [sdiy] SPI Digital
Potentiomters and PIC 18.. not working.. help!</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005>Not a lot of info here Bill.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=404423715-14032005>Do
you have any indication that any of the program that you put in the unit is
working (ie does the hardware work)?</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005>Did you program the MSSP and clocks correctly for
SPI?</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005>You have to get the MSSP port programmed correctly
before anything will happen.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005>Good luck!</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=404423715-14032005>Jay S.</SPAN></FONT></DIV>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
owner-synth-diy@dropmix.xs4all.nl
[mailto:owner-synth-diy@dropmix.xs4all.nl]<B>On Behalf Of </B>Bill
Berzinskas<BR><B>Sent:</B> Monday, March 14, 2005 6:50 AM<BR><B>To:</B>
synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> [sdiy] SPI Digital
Potentiomters and PIC 18.. not working.. help! <BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>I'm using a microhip spi digital
potentiometer.. i'm sending data as follows</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>CS high > low</FONT></DIV>
<DIV><FONT face=Arial size=2>write command byte (00010001)</FONT></DIV>
<DIV><FONT face=Arial size=2>write data byte</FONT></DIV>
<DIV><FONT face=Arial size=2>cd low > high</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>and nothing is working.. what am
i missing? i'm sending the data from a
pic18f</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>please
help</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>