Diff: libraries/CN0357/CN0357.cpp

Revision:

22:34a97378aab6

Parent:

18:7d35420ff4aa

Parent:

21:a8023e5e97be

Child:

23:174dd32fa661

--- a/libraries/CN0357/CN0357.cpp	Thu May 05 15:59:47 2016 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,229 +0,0 @@
-/**
-*   @file     cn0357.cpp
-*   @brief    Source file for CN0357
-*   @author   Analog Devices Inc.
-*
-* For support please go to:
-* Github: https://github.com/analogdevicesinc/mbed-adi
-* Support: https://ez.analog.com/community/linux-device-drivers/microcontroller-no-os-drivers
-* Product: www.analog.com/EVAL-CN0357-ARDZ
-* More: https://wiki.analog.com/resources/tools-software/mbed-drivers-all
-
-********************************************************************************
-* Copyright 2016(c) Analog Devices, Inc.
-*
-* All rights reserved.
-*
-* Redistribution and use in source and binary forms, with or without
-* modification, are permitted provided that the following conditions are met:
-*  - Redistributions of source code must retain the above copyright
-*    notice, this list of conditions and the following disclaimer.
-*  - Redistributions in binary form must reproduce the above copyright
-*    notice, this list of conditions and the following disclaimer in
-*    the documentation and/or other materials provided with the
-*    distribution.
-*  - Neither the name of Analog Devices, Inc. nor the names of its
-*    contributors may be used to endorse or promote products derived
-*    from this software without specific prior written permission.
-*  - The use of this software may or may not infringe the patent rights
-*    of one or more patent holders.  This license does not release you
-*    from the requirement that you obtain separate licenses from these
-*    patent holders to use this software.
-*  - Use of the software either in source or binary form, must be run
-*    on or directly connected to an Analog Devices Inc. component.
-*
-* THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
-* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
-* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-* IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
-* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-* LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
-* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*
-********************************************************************************/
-
-#include "mbed.h"
-#include "AD7790.h"
-#include "AD5270.h"
-#include "CN0357.h"
-
-/**
- * @brief CN0357 constructor
- * @param CSAD7790 - (optional)chip select of the AD7790
- * @param CSAD5270 - (optional)chip select of the AD5270
- * @param MOSI - (optional)pin of the SPI interface
- * @param MISO - (optional)pin of the SPI interface
- * @param SCK  - (optional)pin of the SPI interface
- */
-CN0357::CN0357(PinName CSAD7790, PinName CSAD5270, PinName MOSI, PinName MISO,
-               PinName SCK) :
-    _vref(1.2), _sensor_sensitivity(0), _sensor_range(0), _RDACvalue(0),
-    ad7790(_vref, CSAD7790, MOSI, MISO, SCK), ad5270(CSAD5270, 20000.0, MOSI, MISO, SCK)
-
-{
-}
-
-/**
- * @brief initializes the AD7790 and the AD5270
- * @param range - range of the sensor used (in ppm)
- * @param sensitivity - sensitivity of the sensor (A/ppm)
- * @param jp - (optional)jumper configuration of the CN0357
- * @param mode_val - (optional)if jp is set to InternalADC, configures the mode register of the Internal ADC
- * @param filter_val - (optional)if jp is set to InternalADC, configures the filter register of the Internal ADC
- */
-void CN0357::init(float range, float sensitivity, JumperConfig_t jp, uint8_t mode_val, uint8_t filter_val)
-{
-    ad5270.frequency(500000);
-    ad7790.frequency(500000);
-
-    float resistance = set_sensor_parameters(range, sensitivity);
-
-    if(jp == INTERNAL_AD7790) {
-        _AD7790_init(mode_val, filter_val);
-    }
-    _rdac_init(resistance);
-}
-
-/**
- * @brief initializes the RDAC and sets SDO to HiZ
- * @param resistance - resistance value to initialize the RDAC
- * @return
- */
-void CN0357::_rdac_init(float resistance)
-{
-    /* RDAC initialization*/
-    /* Compute for the nearest RDAC value from given resistance and save data to the structure */
-    set_RDAC_value(resistance);
-    /* Set AD5270 SDO to Hi-Z */
-    ad5270.set_SDO_HiZ();
-}
-
-/**
- * @brief initializes the AD7790
- * @param mode_val -  configures the mode register of the Internal ADC
- * @param filter_val -  configures the filter register of the Internal ADC
- */
-void CN0357::_AD7790_init(uint8_t mode_val, uint8_t filter_val)
-{
-    ad7790.reset();
-    wait_ms(50);
-
-    ad7790.write_mode_reg(mode_val);
-    wait_us(2);
-
-    ad7790.write_filter_reg(filter_val);
-    wait_ms(50);
-}
-
-/**
- * @brief reads the status register of the AD7790
- * @return status register value
- */
-uint8_t CN0357::read_adc_status(void)
-{
-    return ad7790.read_status_reg();
-}
-
-/**
- * @brief reads the ADC and computes the sensor voltage
- * @return sensor voltage
- */
-float CN0357::read_sensor_voltage(void)
-{
-    return ad7790.read_voltage();
-}
-
-/**
- * @brief reads the data register of the AD7790
- * @return data register value
- */
-uint16_t CN0357::read_sensor(void)
-{
-    return ad7790.read_u16();
-}
-
-/**
- * @brief reads and computes the sensor reading in PPM
- * @return value of the sensor reading in PPM
- */
-float CN0357::read_ppm()
-{
-    return calc_ppm(ad7790.read_voltage()); /* Convert voltage to Gas concentration*/
-}
-
-/**
- * @brief computes a value in PPM from a reading received as a param
- * @param adcVoltage - voltage to be converted to PPM
- * @return sensor value in PPM
- */
-float CN0357::calc_ppm(float adcVoltage)
-{
-    float fConcentration = 0;
-    fConcentration = (fabs(adcVoltage) / _RDACvalue) / _sensor_sensitivity;
-    return fConcentration;
-}
-
-/**
- * @brief computes voltage from a 16 bit ADC value received as a parameter
- * @param data - ADC value
- * @return sensor voltage
- */
-float CN0357::data_to_voltage(uint16_t data)
-{
-    return ad7790.data_to_voltage(data);
-}
-
-/**
- * @brief sets a new value for the RDAC
- * @param resistance new value for the resistance
- * @return none
- */
-void CN0357::set_RDAC_value(float resistance)
-{
-    _RDACvalue = ad5270.write_RDAC(resistance);
-}
-
-/**
- * @brief getter method for RDAC value
- * @return value of the RDAC in ohms
- */
-float CN0357::get_RDAC_value()
-{
-    return _RDACvalue;
-}
-
-/**
- * @brief set sensor range and sensitivity
- * sets sensor range, sensitivity
- * returns suggested resistance value for feedback resistor
- * @param range - range of the sensor used (in ppm)
- * @param sensitivity - sensitivity of the sensor (in A/ppm)
- * @return suggested resistance value for feedback resistor
- */
-float CN0357::set_sensor_parameters(float range, float sensitivity)
-{
-    _sensor_sensitivity = static_cast<float>(sensitivity);
-    _sensor_range = range;
-    return (_vref / (static_cast<float>(_sensor_range * _sensor_sensitivity)));
-}
-
-/**
- * @brief getter method for sensor sensitivity
- * @return sensor sensitivity (in A/ppm)
- */
-float CN0357::get_sensor_sensitivity()
-{
-    return _sensor_sensitivity;
-}
-
-/**
- * @brief getter method for sensor range
- * @return sensor range (in ppm)
- */
-float CN0357::get_sensor_range()
-{
-    return _sensor_range;
-}