Host software for the MAX30001 ECG, PACE, biopotential, bioimpedance, R-to-R peak sensor. Hosted on the MAX32630FTHR.
Dependencies: SDFileSystem USBDevice max32630fthr
Fork of MAX30001-MAX32630FTHR-ECG-EVKIT by
Diff: HSP/Interfaces/QuadSpiInterface.cpp
- Revision:
- 0:8e4630a71eb1
diff -r 000000000000 -r 8e4630a71eb1 HSP/Interfaces/QuadSpiInterface.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HSP/Interfaces/QuadSpiInterface.cpp Thu Apr 05 10:53:26 2018 +0300 @@ -0,0 +1,108 @@ +/******************************************************************************* + * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES + * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the name of Maxim Integrated + * Products, Inc. shall not be used except as stated in the Maxim Integrated + * Products, Inc. Branding Policy. + * + * The mere transfer of this software does not imply any licenses + * of trade secrets, proprietary technology, copyrights, patents, + * trademarks, maskwork rights, or any other form of intellectual + * property whatsoever. Maxim Integrated Products, Inc. retains all + * ownership rights. + ******************************************************************************* + */ +#include "QuadSpiInterface.h" + +/** +* @brief Constructor that accepts pin names for the QUAD SPI interface +* @param mosi master out slave in pin name +* @param miso master in slave out pin name +* @param sclk serial clock pin name +* @param cs chip select pin name +*/ +QuadSpiInterface::QuadSpiInterface(PinName mosi, PinName miso, PinName sclk, + PinName cs) + : spi(mosi, miso, sclk), csPin(cs) { + + } + +/** +* @brief Transmit and recieve QUAD SPI data +* @param tx_buf pointer to transmit byte buffer +* @param tx_size number of bytes to transmit +* @param rx_buf pointer to the recieve buffer +* @param rx_size number of bytes to recieve +* @param last flag to indicate if this is the last QUAD SPI transaction for the +* current chip select cycle +*/ +int QuadSpiInterface::SPI_Transmit(const uint8_t *tx_buf, uint32_t tx_size, + uint8_t *rx_buf, uint32_t rx_size, + int last) { + uint32_t i; + int result = 0; + int index = 0; + // lower chip select + csPin = 0; + // write bytes out QUAD SPI + spi.setQuadMode(); + for (i = 0; i < tx_size; i++) { + rx_buf[index] = spi.write((int)tx_buf[i]); + index++; + } + // read in bytes from QUAD SPI + for (i = 0; i < rx_size; i++) { + rx_buf[index] = (uint8_t)spi.read(); + index++; + } + // raise chip select if this is the last transaction + if (last) csPin = 1; + return result; +} + +/** +* @brief Transmit and recieve QUAD SPI data +* @param tx_buf pointer to transmit byte buffer +* @param tx_size number of bytes to transmit +* @param rx_buf pointer to the recieve buffer +* @param rx_size number of bytes to recieve +* @param last flag to indicate if this is the last QUAD SPI transaction for the +* current chip select cycle +*/ +int QuadSpiInterface::SPI_Transmit4Wire(const uint8_t *tx_buf, uint32_t tx_size, + uint8_t *rx_buf, uint32_t rx_size, + int last) { + uint32_t i; + int result = 0; + int index = 0; + // lower chip select + csPin = 0; + // write bytes out Single SPI + spi.setSingleMode(); + for (i = 0; i < tx_size; i++) { + rx_buf[index] = spi.write((int)tx_buf[i]); + index++; + } + // raise chip select if this is the last transaction + if (last) csPin = 1; + return result; +} +