Darien Figueroa / Mbed OS Final_Program

This is the latest working repository used in our demo video for the Maxim to display temperature readings on Bluetooth

Dependencies:   USBDevice

HSP/Interfaces/QuadSpiInterface.cpp@0:832122ce6748, 2021-04-07 (annotated)

Committer:
darienf
Date:
Wed Apr 07 22:37:59 2021 +0000
Revision:
0:832122ce6748
painnie

Who changed what in which revision?

UserRevisionLine numberNew contents of line
darienf 0:832122ce6748 1 /*******************************************************************************
darienf 0:832122ce6748 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
darienf 0:832122ce6748 3 *
darienf 0:832122ce6748 4 * Permission is hereby granted, free of charge, to any person obtaining a
darienf 0:832122ce6748 5 * copy of this software and associated documentation files (the "Software"),
darienf 0:832122ce6748 6 * to deal in the Software without restriction, including without limitation
darienf 0:832122ce6748 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
darienf 0:832122ce6748 8 * and/or sell copies of the Software, and to permit persons to whom the
darienf 0:832122ce6748 9 * Software is furnished to do so, subject to the following conditions:
darienf 0:832122ce6748 10 *
darienf 0:832122ce6748 11 * The above copyright notice and this permission notice shall be included
darienf 0:832122ce6748 12 * in all copies or substantial portions of the Software.
darienf 0:832122ce6748 13 *
darienf 0:832122ce6748 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
darienf 0:832122ce6748 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
darienf 0:832122ce6748 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
darienf 0:832122ce6748 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
darienf 0:832122ce6748 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
darienf 0:832122ce6748 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
darienf 0:832122ce6748 20 * OTHER DEALINGS IN THE SOFTWARE.
darienf 0:832122ce6748 21 *
darienf 0:832122ce6748 22 * Except as contained in this notice, the name of Maxim Integrated
darienf 0:832122ce6748 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
darienf 0:832122ce6748 24 * Products, Inc. Branding Policy.
darienf 0:832122ce6748 25 *
darienf 0:832122ce6748 26 * The mere transfer of this software does not imply any licenses
darienf 0:832122ce6748 27 * of trade secrets, proprietary technology, copyrights, patents,
darienf 0:832122ce6748 28 * trademarks, maskwork rights, or any other form of intellectual
darienf 0:832122ce6748 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
darienf 0:832122ce6748 30 * ownership rights.
darienf 0:832122ce6748 31 *******************************************************************************
darienf 0:832122ce6748 32 */
darienf 0:832122ce6748 33 #include "QuadSpiInterface.h"
darienf 0:832122ce6748 34
darienf 0:832122ce6748 35 /**
darienf 0:832122ce6748 36 * @brief Constructor that accepts pin names for the QUAD SPI interface
darienf 0:832122ce6748 37 * @param mosi master out slave in pin name
darienf 0:832122ce6748 38 * @param miso master in slave out pin name
darienf 0:832122ce6748 39 * @param sclk serial clock pin name
darienf 0:832122ce6748 40 * @param cs chip select pin name
darienf 0:832122ce6748 41 */
darienf 0:832122ce6748 42 QuadSpiInterface::QuadSpiInterface(PinName mosi, PinName miso, PinName sclk,
darienf 0:832122ce6748 43 PinName cs)
darienf 0:832122ce6748 44 : spi(mosi, miso, sclk), csPin(cs) {
darienf 0:832122ce6748 45
darienf 0:832122ce6748 46 }
darienf 0:832122ce6748 47
darienf 0:832122ce6748 48 /**
darienf 0:832122ce6748 49 * @brief Transmit and recieve QUAD SPI data
darienf 0:832122ce6748 50 * @param tx_buf pointer to transmit byte buffer
darienf 0:832122ce6748 51 * @param tx_size number of bytes to transmit
darienf 0:832122ce6748 52 * @param rx_buf pointer to the recieve buffer
darienf 0:832122ce6748 53 * @param rx_size number of bytes to recieve
darienf 0:832122ce6748 54 * @param last flag to indicate if this is the last QUAD SPI transaction for the
darienf 0:832122ce6748 55 * current chip select cycle
darienf 0:832122ce6748 56 */
darienf 0:832122ce6748 57 int QuadSpiInterface::SPI_Transmit(const uint8_t *tx_buf, uint32_t tx_size,
darienf 0:832122ce6748 58 uint8_t *rx_buf, uint32_t rx_size,
darienf 0:832122ce6748 59 int last) {
darienf 0:832122ce6748 60 uint32_t i;
darienf 0:832122ce6748 61 int result = 0;
darienf 0:832122ce6748 62 int index = 0;
darienf 0:832122ce6748 63 // lower chip select
darienf 0:832122ce6748 64 csPin = 0;
darienf 0:832122ce6748 65 // write bytes out QUAD SPI
darienf 0:832122ce6748 66 spi.setQuadMode();
darienf 0:832122ce6748 67 for (i = 0; i < tx_size; i++) {
darienf 0:832122ce6748 68 rx_buf[index] = spi.write((int)tx_buf[i]);
darienf 0:832122ce6748 69 index++;
darienf 0:832122ce6748 70 }
darienf 0:832122ce6748 71 // read in bytes from QUAD SPI
darienf 0:832122ce6748 72 for (i = 0; i < rx_size; i++) {
darienf 0:832122ce6748 73 rx_buf[index] = (uint8_t)spi.read();
darienf 0:832122ce6748 74 index++;
darienf 0:832122ce6748 75 }
darienf 0:832122ce6748 76 // raise chip select if this is the last transaction
darienf 0:832122ce6748 77 if (last) csPin = 1;
darienf 0:832122ce6748 78 return result;
darienf 0:832122ce6748 79 }
darienf 0:832122ce6748 80
darienf 0:832122ce6748 81 /**
darienf 0:832122ce6748 82 * @brief Transmit and recieve QUAD SPI data
darienf 0:832122ce6748 83 * @param tx_buf pointer to transmit byte buffer
darienf 0:832122ce6748 84 * @param tx_size number of bytes to transmit
darienf 0:832122ce6748 85 * @param rx_buf pointer to the recieve buffer
darienf 0:832122ce6748 86 * @param rx_size number of bytes to recieve
darienf 0:832122ce6748 87 * @param last flag to indicate if this is the last QUAD SPI transaction for the
darienf 0:832122ce6748 88 * current chip select cycle
darienf 0:832122ce6748 89 */
darienf 0:832122ce6748 90 int QuadSpiInterface::SPI_Transmit4Wire(const uint8_t *tx_buf, uint32_t tx_size,
darienf 0:832122ce6748 91 uint8_t *rx_buf, uint32_t rx_size,
darienf 0:832122ce6748 92 int last) {
darienf 0:832122ce6748 93 uint32_t i;
darienf 0:832122ce6748 94 int result = 0;
darienf 0:832122ce6748 95 int index = 0;
darienf 0:832122ce6748 96 // lower chip select
darienf 0:832122ce6748 97 csPin = 0;
darienf 0:832122ce6748 98 // write bytes out Single SPI
darienf 0:832122ce6748 99 spi.setSingleMode();
darienf 0:832122ce6748 100 for (i = 0; i < tx_size; i++) {
darienf 0:832122ce6748 101 rx_buf[index] = spi.write((int)tx_buf[i]);
darienf 0:832122ce6748 102 index++;
darienf 0:832122ce6748 103 }
darienf 0:832122ce6748 104 // raise chip select if this is the last transaction
darienf 0:832122ce6748 105 if (last) csPin = 1;
darienf 0:832122ce6748 106 return result;
darienf 0:832122ce6748 107 }