Utility library for HSP SPo2 HR demo including user interface, board support adn accelerometer.

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Show/hide line numbers bmi160_i2c.cpp Source File

bmi160_i2c.cpp

00001 /**********************************************************************
00002 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
00003 *
00004 * Permission is hereby granted, free of charge, to any person obtaining a
00005 * copy of this software and associated documentation files (the "Software"),
00006 * to deal in the Software without restriction, including without limitation
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00009 * Software is furnished to do so, subject to the following conditions:
00010 *
00011 * The above copyright notice and this permission notice shall be included
00012 * in all copies or substantial portions of the Software.
00013 *
00014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00015 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00016 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00017 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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00019 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
00020 * OTHER DEALINGS IN THE SOFTWARE.
00021 *
00022 * Except as contained in this notice, the name of Maxim Integrated
00023 * Products, Inc. shall not be used except as stated in the Maxim Integrated
00024 * Products, Inc. Branding Policy.
00025 *
00026 * The mere transfer of this software does not imply any licenses
00027 * of trade secrets, proprietary technology, copyrights, patents,
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00029 * property whatsoever. Maxim Integrated Products, Inc. retains all
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00031 **********************************************************************/
00032 
00033 
00034 #include "bmi160.h"
00035 
00036 
00037 //*****************************************************************************
00038 BMI160_I2C::BMI160_I2C(I2C *i2cBus, uint8_t i2cAdrs)
00039 :m_i2cBus(i2cBus), m_Wadrs(i2cAdrs << 1), m_Radrs((i2cAdrs << 1) | 1)
00040 {
00041 
00042 }
00043 
00044 BMI160_I2C::BMI160_I2C(I2C *i2cBus, uint8_t i2cAdrs, InterruptIn *int_pin)
00045 :m_i2cBus(i2cBus), m_Wadrs(i2cAdrs << 1), m_Radrs((i2cAdrs << 1) | 1), BMI160(int_pin)
00046 {
00047 
00048 }
00049 
00050 //*****************************************************************************
00051 int32_t BMI160_I2C::readRegister(Registers reg, uint8_t *data)
00052 {
00053     int32_t rtnVal = -1;
00054     char packet[] = {static_cast<char>(reg)};
00055 
00056     if(m_i2cBus->write(m_Wadrs, packet, 1) == 0)
00057     {
00058         rtnVal = m_i2cBus->read(m_Radrs, reinterpret_cast<char *>(data), 1);
00059     }
00060 
00061     return rtnVal;
00062 }
00063 
00064 
00065 //*****************************************************************************
00066 int32_t BMI160_I2C::writeRegister(Registers reg, const uint8_t data)
00067 {
00068     char packet[] = {static_cast<char>(reg), static_cast<char>(data)};
00069 
00070     return m_i2cBus->write(m_Wadrs, packet, sizeof(packet));
00071 }
00072 
00073 
00074 //*****************************************************************************
00075 int32_t BMI160_I2C::readBlock(Registers startReg, Registers stopReg,
00076 uint8_t *data)
00077 {
00078     int32_t rtnVal = -1;
00079     int32_t numBytes = ((stopReg - startReg) + 1);
00080     char packet[] = {static_cast<char>(startReg)};
00081 
00082     if(m_i2cBus->write(m_Wadrs, packet, 1) == 0)
00083     {
00084         rtnVal = m_i2cBus->read(m_Radrs, reinterpret_cast<char *>(data), numBytes);
00085     }
00086 
00087     return rtnVal;
00088 }
00089 
00090 
00091 //*****************************************************************************
00092 int32_t BMI160_I2C::writeBlock(Registers startReg, Registers stopReg,
00093 const uint8_t *data)
00094 {
00095     int32_t numBytes = ((stopReg - startReg) + 1);
00096     char packet[numBytes + 1];
00097 
00098     packet[0] = static_cast<char>(startReg);
00099 
00100     memcpy(packet + 1, data, numBytes);
00101 
00102     return m_i2cBus->write(m_Wadrs, packet, sizeof(packet));
00103 }