mirror of https://github.com/arendst/Tasmota.git
201 lines
7.1 KiB
C++
201 lines
7.1 KiB
C++
// I2Cdev library collection - ADS1115 I2C device class header file
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// Based on Texas Instruments ADS1113/4/5 datasheet, May 2009 (SBAS444B, revised October 2009)
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// Note that the ADS1115 uses 16-bit registers, not 8-bit registers.
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// 8/2/2011 by Jeff Rowberg <jeff@rowberg.net>
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// Updates should (hopefully) always be available at https://github.com/jrowberg/i2cdevlib
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//
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// Changelog:
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// 2013-05-05 - Add debug information. Clean up Single Shot implementation
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// 2011-10-29 - added getDifferentialx() methods, F. Farzanegan
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// 2011-08-02 - initial release
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/* ============================================
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I2Cdev device library code is placed under the MIT license
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Copyright (c) 2011 Jeff Rowberg
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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===============================================
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*/
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#ifndef _ADS1115_H_
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#define _ADS1115_H_
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#include "I2Cdev.h"
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// -----------------------------------------------------------------------------
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// Arduino-style "Serial.print" debug constant (uncomment to enable)
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// -----------------------------------------------------------------------------
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//#define ADS1115_SERIAL_DEBUG
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#define ADS1115_ADDRESS_ADDR_GND 0x48 // address pin low (GND)
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#define ADS1115_ADDRESS_ADDR_VDD 0x49 // address pin high (VCC)
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#define ADS1115_ADDRESS_ADDR_SDA 0x4A // address pin tied to SDA pin
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#define ADS1115_ADDRESS_ADDR_SCL 0x4B // address pin tied to SCL pin
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#define ADS1115_DEFAULT_ADDRESS ADS1115_ADDRESS_ADDR_GND
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#define ADS1115_RA_CONVERSION 0x00
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#define ADS1115_RA_CONFIG 0x01
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#define ADS1115_RA_LO_THRESH 0x02
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#define ADS1115_RA_HI_THRESH 0x03
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#define ADS1115_CFG_OS_BIT 15
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#define ADS1115_CFG_MUX_BIT 14
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#define ADS1115_CFG_MUX_LENGTH 3
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#define ADS1115_CFG_PGA_BIT 11
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#define ADS1115_CFG_PGA_LENGTH 3
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#define ADS1115_CFG_MODE_BIT 8
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#define ADS1115_CFG_DR_BIT 7
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#define ADS1115_CFG_DR_LENGTH 3
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#define ADS1115_CFG_COMP_MODE_BIT 4
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#define ADS1115_CFG_COMP_POL_BIT 3
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#define ADS1115_CFG_COMP_LAT_BIT 2
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#define ADS1115_CFG_COMP_QUE_BIT 1
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#define ADS1115_CFG_COMP_QUE_LENGTH 2
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#define ADS1115_MUX_P0_N1 0x00 // default
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#define ADS1115_MUX_P0_N3 0x01
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#define ADS1115_MUX_P1_N3 0x02
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#define ADS1115_MUX_P2_N3 0x03
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#define ADS1115_MUX_P0_NG 0x04
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#define ADS1115_MUX_P1_NG 0x05
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#define ADS1115_MUX_P2_NG 0x06
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#define ADS1115_MUX_P3_NG 0x07
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#define ADS1115_PGA_6P144 0x00
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#define ADS1115_PGA_4P096 0x01
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#define ADS1115_PGA_2P048 0x02 // default
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#define ADS1115_PGA_1P024 0x03
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#define ADS1115_PGA_0P512 0x04
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#define ADS1115_PGA_0P256 0x05
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#define ADS1115_PGA_0P256B 0x06
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#define ADS1115_PGA_0P256C 0x07
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#define ADS1115_MV_6P144 0.187500
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#define ADS1115_MV_4P096 0.125000
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#define ADS1115_MV_2P048 0.062500 // default
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#define ADS1115_MV_1P024 0.031250
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#define ADS1115_MV_0P512 0.015625
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#define ADS1115_MV_0P256 0.007813
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#define ADS1115_MV_0P256B 0.007813
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#define ADS1115_MV_0P256C 0.007813
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#define ADS1115_MODE_CONTINUOUS 0x00
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#define ADS1115_MODE_SINGLESHOT 0x01 // default
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#define ADS1115_RATE_8 0x00
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#define ADS1115_RATE_16 0x01
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#define ADS1115_RATE_32 0x02
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#define ADS1115_RATE_64 0x03
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#define ADS1115_RATE_128 0x04 // default
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#define ADS1115_RATE_250 0x05
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#define ADS1115_RATE_475 0x06
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#define ADS1115_RATE_860 0x07
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#define ADS1115_COMP_MODE_HYSTERESIS 0x00 // default
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#define ADS1115_COMP_MODE_WINDOW 0x01
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#define ADS1115_COMP_POL_ACTIVE_LOW 0x00 // default
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#define ADS1115_COMP_POL_ACTIVE_HIGH 0x01
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#define ADS1115_COMP_LAT_NON_LATCHING 0x00 // default
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#define ADS1115_COMP_LAT_LATCHING 0x01
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#define ADS1115_COMP_QUE_ASSERT1 0x00
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#define ADS1115_COMP_QUE_ASSERT2 0x01
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#define ADS1115_COMP_QUE_ASSERT4 0x02
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#define ADS1115_COMP_QUE_DISABLE 0x03 // default
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// -----------------------------------------------------------------------------
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// Arduino-style "Serial.print" debug constant (uncomment to enable)
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// -----------------------------------------------------------------------------
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//#define ADS1115_SERIAL_DEBUG
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class ADS1115 {
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public:
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ADS1115();
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ADS1115(uint8_t address);
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void initialize();
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bool testConnection();
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// SINGLE SHOT utilities
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bool pollConversion(uint16_t max_retries);
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void triggerConversion();
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// Read the current CONVERSION register
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int16_t getConversion(bool triggerAndPoll=true);
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// Differential
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int16_t getConversionP0N1();
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int16_t getConversionP0N3();
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int16_t getConversionP1N3();
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int16_t getConversionP2N3();
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// Single-ended
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int16_t getConversionP0GND();
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int16_t getConversionP1GND();
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int16_t getConversionP2GND();
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int16_t getConversionP3GND();
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// Utility
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float getMilliVolts(bool triggerAndPoll=true);
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float getMvPerCount();
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// CONFIG register
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bool isConversionReady();
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uint8_t getMultiplexer();
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void setMultiplexer(uint8_t mux);
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uint8_t getGain();
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void setGain(uint8_t gain);
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bool getMode();
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void setMode(bool mode);
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uint8_t getRate();
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void setRate(uint8_t rate);
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bool getComparatorMode();
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void setComparatorMode(bool mode);
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bool getComparatorPolarity();
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void setComparatorPolarity(bool polarity);
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bool getComparatorLatchEnabled();
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void setComparatorLatchEnabled(bool enabled);
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uint8_t getComparatorQueueMode();
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void setComparatorQueueMode(uint8_t mode);
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void setConversionReadyPinMode();
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// *_THRESH registers
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int16_t getLowThreshold();
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void setLowThreshold(int16_t threshold);
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int16_t getHighThreshold();
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void setHighThreshold(int16_t threshold);
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// DEBUG
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void showConfigRegister();
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private:
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uint8_t devAddr;
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uint16_t buffer[2];
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bool devMode;
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uint8_t muxMode;
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uint8_t pgaMode;
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};
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#endif /* _ADS1115_H_ */
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