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70 lines
5.2 KiB
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70 lines
5.2 KiB
HTML
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<h3><a name="over"></a>spi</h3><span style="font-weight: bold;"></span><br>
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<big><span style="font-family: Helvetica,Arial,sans-serif;"></span><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>Actual_clock = spi.setup( id, spi.MASTER | spi.SLAVE, clock, cpol, cpha,</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>databits): set the SPI interface with the given parameters, returns the clock</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>that was set for the interface.</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>spi.select( </big></font><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>id</big></font><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big> ): sets the selected spi as active (sets the SS line of the given interface).</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big> </big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>spi.unselect( id ): clears the SS line of the given interface.</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big> </big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>spi.send( id, Data1, Data2, ... ): sends all the data to the specified SPI</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>interface.</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>[</big></font><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>spi.sendrecv(</big></font><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>id, Out1, Out2, ...</big></font><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>)] </big></font><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>In1, In2, ... = spi.send_recv( id, Out1, Out2, ... ): sends all the "out" bytes</big></font><span style="font-family: Helvetica,Arial,sans-serif;"> </span><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>to the specified SPI interface and returts the data read after each sent byte.</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>Returning
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several values in this blocking way would not complicate some queued
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send implementations ? (ok, this could be another function :)</big></font><span style="font-family: Helvetica,Arial,sans-serif;">
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</span><br style="font-family: Helvetica,Arial,sans-serif;"><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>Sending multiple data/chars in a single call and not in
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a table argument does not allow the data to be built in run time
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(without some string massage, of course :)</big></font><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>
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</big></font><br style="font-family: Helvetica,Arial,sans-serif;"><font style="font-family: Helvetica,Arial,sans-serif;" size="2"><big>
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</big></font><br style="font-family: Helvetica,Arial,sans-serif;"><span style="font-family: Helvetica,Arial,sans-serif;">
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</span></big>
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