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i2C_Stream

 
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robotam



Joined: 13 Nov 2007
Posts: 15

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i2C_Stream
PostPosted: Wed Feb 13, 2008 3:36 pm     Reply with quote
Hello

Someone could post a example code of i2c communication using "Stream".

thanks
rnielsen



Joined: 23 Sep 2003
Posts: 852
Location: Utah

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PostPosted: Thu Feb 14, 2008 9:52 am     Reply with quote
As far as I know, STREAM is only available with the RS232, not the I2C.

Ronald
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu Feb 14, 2008 11:43 am     Reply with quote
Streams can be specified in the #use i2c() statement in vs. 4 of the
compiler. See the current manual:
http://www.ccsinfo.com/downloads/CReferenceManual.pdf


To answer the question, specify the name of the stream in the #use i2c()
statement. Do this in the same way as a stream is specified in a
#use rs232() statement. Then, in every i2c function, specify the stream
that you're using.

Instead of doing this:
Quote:
i2c_write (data);

You would do this:
Quote:
i2c_write (stream, data);


All the rest of the i2c functions must also have a stream parameter
(if you are using streams). Example:
Code:

i2c_poll(stream);
data = i2c_read(stream);
data = i2c_read(stream, ack);
i2c_start(stream);
i2c_start(stream, restart);
i2c_stop(stream);
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