Jerry Bradshaw / QuadSPI

test

QuadSpi.cpp@0:15a46579bacc, 2016-10-03 (annotated)

Committer:
jbradshaw
Date:
Mon Oct 03 18:30:26 2016 +0000
Revision:
0:15a46579bacc
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jbradshaw 0:15a46579bacc 1
jbradshaw 0:15a46579bacc 2 /*******************************************************************************
jbradshaw 0:15a46579bacc 3 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
jbradshaw 0:15a46579bacc 4 *
jbradshaw 0:15a46579bacc 5 * Permission is hereby granted, free of charge, to any person obtaining a
jbradshaw 0:15a46579bacc 6 * copy of this software and associated documentation files (the "Software"),
jbradshaw 0:15a46579bacc 7 * to deal in the Software without restriction, including without limitation
jbradshaw 0:15a46579bacc 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
jbradshaw 0:15a46579bacc 9 * and/or sell copies of the Software, and to permit persons to whom the
jbradshaw 0:15a46579bacc 10 * Software is furnished to do so, subject to the following conditions:
jbradshaw 0:15a46579bacc 11 *
jbradshaw 0:15a46579bacc 12 * The above copyright notice and this permission notice shall be included
jbradshaw 0:15a46579bacc 13 * in all copies or substantial portions of the Software.
jbradshaw 0:15a46579bacc 14 *
jbradshaw 0:15a46579bacc 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
jbradshaw 0:15a46579bacc 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
jbradshaw 0:15a46579bacc 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
jbradshaw 0:15a46579bacc 18 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
jbradshaw 0:15a46579bacc 19 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
jbradshaw 0:15a46579bacc 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
jbradshaw 0:15a46579bacc 21 * OTHER DEALINGS IN THE SOFTWARE.
jbradshaw 0:15a46579bacc 22 *
jbradshaw 0:15a46579bacc 23 * Except as contained in this notice, the name of Maxim Integrated
jbradshaw 0:15a46579bacc 24 * Products, Inc. shall not be used except as stated in the Maxim Integrated
jbradshaw 0:15a46579bacc 25 * Products, Inc. Branding Policy.
jbradshaw 0:15a46579bacc 26 *
jbradshaw 0:15a46579bacc 27 * The mere transfer of this software does not imply any licenses
jbradshaw 0:15a46579bacc 28 * of trade secrets, proprietary technology, copyrights, patents,
jbradshaw 0:15a46579bacc 29 * trademarks, maskwork rights, or any other form of intellectual
jbradshaw 0:15a46579bacc 30 * property whatsoever. Maxim Integrated Products, Inc. retains all
jbradshaw 0:15a46579bacc 31 * ownership rights.
jbradshaw 0:15a46579bacc 32 *******************************************************************************
jbradshaw 0:15a46579bacc 33 */
jbradshaw 0:15a46579bacc 34
jbradshaw 0:15a46579bacc 35
jbradshaw 0:15a46579bacc 36 #include "QuadSpi.h"
jbradshaw 0:15a46579bacc 37 #include "spi_multi_api.h"
jbradshaw 0:15a46579bacc 38
jbradshaw 0:15a46579bacc 39 /** Initialize a SPI master for Quad SPI
jbradshaw 0:15a46579bacc 40 *
jbradshaw 0:15a46579bacc 41 * @param[in] mosi Pin used for Master Out Slave In
jbradshaw 0:15a46579bacc 42 * @param[in] miso Pin used for Master In Slave Out
jbradshaw 0:15a46579bacc 43 * @param[in] sclk Pin used for Clock
jbradshaw 0:15a46579bacc 44 * @param[in] ssel Pin used for Chip Select
jbradshaw 0:15a46579bacc 45 */
jbradshaw 0:15a46579bacc 46 QuadSPI::QuadSPI(PinName mosi, PinName miso, PinName sclk, PinName ssel) : SPI(mosi,miso,sclk,ssel) {
jbradshaw 0:15a46579bacc 47 spi_master_width(&_spi, WidthQuad);
jbradshaw 0:15a46579bacc 48 }
jbradshaw 0:15a46579bacc 49
jbradshaw 0:15a46579bacc 50 /** Write a byte out in master mode and receive a value
jbradshaw 0:15a46579bacc 51 *
jbradshaw 0:15a46579bacc 52 * @param[in] value Byte Value to send
jbradshaw 0:15a46579bacc 53 * @return Returns Zero
jbradshaw 0:15a46579bacc 54 */
jbradshaw 0:15a46579bacc 55 int QuadSPI::write(int value) {
jbradshaw 0:15a46579bacc 56 aquire();
jbradshaw 0:15a46579bacc 57 spi_master_write(&_spi, value);
jbradshaw 0:15a46579bacc 58 return 0;
jbradshaw 0:15a46579bacc 59 }
jbradshaw 0:15a46579bacc 60
jbradshaw 0:15a46579bacc 61 /** Read a byte in master mode using Quad SPI simplex transfer
jbradshaw 0:15a46579bacc 62 *
jbradshaw 0:15a46579bacc 63 * @return Returns the value received from Quad SPI
jbradshaw 0:15a46579bacc 64 */
jbradshaw 0:15a46579bacc 65 int QuadSPI::read() {
jbradshaw 0:15a46579bacc 66 aquire();
jbradshaw 0:15a46579bacc 67 return spi_master_read(&_spi);
jbradshaw 0:15a46579bacc 68 }
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