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/*
* Author: Marc Graham <marc@m2ag.net>
* Copyright (c) 2015 Intel Corporation.
*
* 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.
*/
/*=========================================================================*/
#pragma once
#include "ads1x15.h"
/*=========================================================================
CONVERSION DELAY (in microS)
-----------------------------------------------------------------------*/
#define ADS1115_CONVERSIONDELAY (8000)
/*=========================================================================*/
/*=========================================================================
CONFIG REGISTER
-----------------------------------------------------------------------*/
#define ADS1115_DR_MASK (0x00E0)
#define ADS1115_DR_8SPS (0x0000) // 8 samples per second
#define ADS1115_DR_16SPS (0x0020) // 16 samples per second
#define ADS1115_DR_32SPS (0x0040) // 32 samples per second
#define ADS1115_DR_64SPS (0x0060) // 64 samples per second
#define ADS1115_DR_128SPS (0x0080) // 128 samples per second (default)
#define ADS1115_DR_250SPS (0x00A0) // 250 samples per second
#define ADS1115_DR_475SPS (0x00C0) // 475 samples per second
#define ADS1115_DR_860SPS (0x00E0) // 860 samples per second
/*=========================================================================*/
namespace upm {
/**
* @library ads1x15
* @sensor ADS1115
* @comname ADS1115 ADC
* @type electric
* @man ti adafruit
* @con i2c
* @web http://www.ti.com/lit/ds/symlink/ads1115.pdf
*
* @brief API for ADS1115
*
* The ADS1113, ADS1114, and ADS1115 are precision analog-to-digital converters (ADCs) with 16 bits of resolution offered
* in an ultra-small, leadless QFN-10 package or an MSOP-10 package. The ADS1113/4/5 are designed with precision, power,
* and ease of implementation in mind. The ADS1113/4/5 feature an onboard reference and oscillator. Data is transferred via
* an I2C-compatible serial interface; four I2C slave addresses can be selected. The ADS1113/4/5 operate from a single power
* supply ranging from 2.0V to 5.5V.
* The ADS1113/4/5 can perform conversions at rates up to 860 samples per second (SPS). An onboard PGA is available on
* the ADS1114 and ADS1115 that offers input ranges from the supply to as low as ±256mV, allowing both large and small
* signals to be measured with high resolution. The ADS1115 also features an input multiplexer (MUX) that provides two
* differential or four single-ended inputs.
* The ADS1113/4/5 operate either in continuous conversion mode or a single-shot mode that automatically powers down after
* a conversion and greatly reduces current consumption during idle periods. The ADS1113/4/5 are specified from –40°C to +125°C.
*
* Tested with DIYMall ADS1115 board. Also available from Adafruit: https://www.adafruit.com/products/1085
*
* @image html ads1115.jpg
* @snippet ads1x15.cxx Interesting
*/
class ADS1115 : public ADS1X15 {
public:
/**
* @enum ADSSAMPLERATE
* @brief uint16_t enum containing values
* representing the sample rate of the device.
*
* @var ADSSAMPLERATE::SPS_8 = 0x0000
* @var ADSSAMPLERATE::SPS_16 = 0x0020
* @var ADSSAMPLERATE::SPS_32 = 0x0040
* @var ADSSAMPLERATE::SPS_64 = 0x0060
* @var ADSSAMPLERATE::SPS_128 = 0x0080
* @var ADSSAMPLERATE::SPS_250 = 0x00A0
* @var ADSSAMPLERATE::SPS_475 = 0x00C0
* @var ADSSAMPLERATE::SPS_860 = 0x00E0
*/
typedef enum ADSDATARATE
{
SPS_8 = ADS1115_DR_8SPS,
SPS_16 = ADS1115_DR_16SPS,
SPS_32 = ADS1115_DR_32SPS,
SPS_64 = ADS1115_DR_64SPS,
SPS_128 = ADS1115_DR_128SPS,
SPS_250 = ADS1115_DR_250SPS,
SPS_475 = ADS1115_DR_475SPS,
SPS_860 = ADS1115_DR_860SPS
} ADSDATARATE;
/**
* ADS1X15 constructor
*
* @param bus i2c bus the sensor is attached to.
* @param address. Device address. Default is 0x48.
*/
ADS1115 (int bus, uint8_t address = 0x48);
/**
* ADS1X15 destructor
*/
~ADS1115();
/**
* Sets the sample rate of the device. This function
* needs to be overridden in subclasses as the ADS1115 and
* ADS1015 have different sample rates.
*
* @param ADSSAMPLERATE enum
*/
void setSPS(ADSDATARATE rate = ADS1115::SPS_128);
protected:
float getMultiplier(void);
void setDelay(void);
};
}
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