+++ /dev/null
-/*
- * Copyright (c) 2007, Vanderbilt University
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose, without fee, and without written agreement is
- * hereby granted, provided that the above copyright notice, the following
- * two paragraphs and the author appear in all copies of this software.
- *
- * IN NO EVENT SHALL THE VANDERBILT UNIVERSITY BE LIABLE TO ANY PARTY FOR
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
- * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE VANDERBILT
- * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * THE VANDERBILT UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE VANDERBILT UNIVERSITY HAS NO OBLIGATION TO
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- *
- * Author: Miklos Maroti
- */
-
-/**
- * This is a natural extension of the SpiByte interface which allows fast
- * data transfers comparable to the SpiStream interface. Use may want to
- * use the following code sequence to write a buffer as fast as possible
- *
- * call FastSpiByte.spiSplitWrite(data[0]); // the first byte
- * for(i = 1; i < length; ++i) {
- * // finish the previous one and write the next one
- * call FastSpiByte.spiSplitReadWrite(data[i]);
- * }
- * call FastSpiByte.spiSlitRead(); // finish the last one
- */
-interface FastSpiByte
-{
- /**
- * Starts a split-phase SPI data transfer with the given data.
- * A spiSplitRead command must follow this command even if the
- * result is unimportant. The SpiByte interface should be
- * extended with this protocol.
- */
- async command void splitWrite(uint8_t data);
-
- /**
- * Finishes the split-phase SPI data transfer by waiting till
- * the write command comletes and returning the received data.
- */
- async command uint8_t splitRead();
-
- /**
- * This command first reads the SPI register and then writes
- * there the new data, then returns
- */
- async command uint8_t splitReadWrite(uint8_t data);
-
- /**
- * This is the standard SpiByte.write command but a little
- * faster as we shuold not need to adjust the power state there.
- */
- async command uint8_t write(uint8_t data);
-}