90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// This file is part of RTIMULib-Arduino
|
|
//
|
|
// Copyright (c) 2014-2015, richards-tech
|
|
//
|
|
// 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 THE AUTHORS OR COPYRIGHT
|
|
// HOLDERS 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.
|
|
|
|
#include "RTPressureLPS25H.h"
|
|
#include "RTPressureDefs.h"
|
|
|
|
#if defined(LPS25H_5c) || defined(LPS25H_5d)
|
|
|
|
RTPressureLPS25H::RTPressureLPS25H(RTIMUSettings *settings) : RTPressure(settings)
|
|
{
|
|
m_pressureValid = false;
|
|
m_temperatureValid = false;
|
|
}
|
|
|
|
RTPressureLPS25H::~RTPressureLPS25H()
|
|
{
|
|
}
|
|
|
|
bool RTPressureLPS25H::pressureInit()
|
|
{
|
|
m_pressureAddr = m_settings->m_I2CPressureAddress;
|
|
|
|
if (!I2Cdev::writeByte(m_pressureAddr, LPS25H_CTRL_REG_1, 0xc4))
|
|
return false;
|
|
|
|
if (!I2Cdev::writeByte(m_pressureAddr, LPS25H_RES_CONF, 0x05))
|
|
return false;
|
|
|
|
if (!I2Cdev::writeByte(m_pressureAddr, LPS25H_FIFO_CTRL, 0xc0))
|
|
return false;
|
|
|
|
if (!I2Cdev::writeByte(m_pressureAddr, LPS25H_CTRL_REG_2, 0x40))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool RTPressureLPS25H::pressureRead(float &latestPressure, float &latestTemperature)
|
|
{
|
|
unsigned char rawData[3];
|
|
unsigned char status;
|
|
|
|
latestPressure = 0;
|
|
latestTemperature = 0;
|
|
|
|
if (!I2Cdev::readBytes(m_pressureAddr, LPS25H_STATUS_REG, 1, &status))
|
|
return false;
|
|
|
|
if (status & 2) {
|
|
if (!I2Cdev::readBytes(m_pressureAddr, LPS25H_PRESS_OUT_XL + 0x80, 3, rawData))
|
|
return false;
|
|
|
|
m_pressure = (RTFLOAT)((((unsigned long)rawData[2]) << 16) | (((unsigned long)rawData[1]) << 8) | (unsigned long)rawData[0]) / (RTFLOAT)4096;
|
|
m_pressureValid = true;
|
|
}
|
|
if (status & 1) {
|
|
if (!I2Cdev::readBytes(m_pressureAddr, LPS25H_TEMP_OUT_L + 0x80, 2, rawData))
|
|
return false;
|
|
|
|
m_temperature = (int16_t)((((unsigned int)rawData[1]) << 8) | (unsigned int)rawData[0]) / (RTFLOAT)480 + (RTFLOAT)42.5;
|
|
m_temperatureValid = true;
|
|
}
|
|
|
|
latestPressure = m_pressure;
|
|
latestTemperature = m_temperature;
|
|
|
|
return true;
|
|
}
|
|
#endif |