/**************************************************************************/ /*! @file Adafruit_ADS1015.h This is a library for the Adafruit ADS1X15 ADC breakout boards. Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Kevin "KTOWN" Townsend for Adafruit Industries. BSD license, all text here must be included in any redistribution */ /**************************************************************************/ #ifndef __ADS1015_H__ #define __ADS1015_H__ #if ARDUINO >= 100 #include "Arduino.h" #else #include "WProgram.h" #endif #include /*========================================================================= I2C ADDRESS/BITS -----------------------------------------------------------------------*/ #define ADS1015_ADDRESS (0x48) ///< 1001 000 (ADDR = GND) /*=========================================================================*/ /*========================================================================= CONVERSION DELAY (in mS) -----------------------------------------------------------------------*/ #define ADS1015_CONVERSIONDELAY (1) ///< Conversion delay #define ADS1115_CONVERSIONDELAY (9) ///< Conversion delay /*=========================================================================*/ /*========================================================================= POINTER REGISTER -----------------------------------------------------------------------*/ #define ADS1015_REG_POINTER_MASK (0x03) ///< Point mask #define ADS1015_REG_POINTER_CONVERT (0x00) ///< Conversion #define ADS1015_REG_POINTER_CONFIG (0x01) ///< Configuration #define ADS1015_REG_POINTER_LOWTHRESH (0x02) ///< Low threshold #define ADS1015_REG_POINTER_HITHRESH (0x03) ///< High threshold /*=========================================================================*/ /*========================================================================= CONFIG REGISTER -----------------------------------------------------------------------*/ #define ADS1015_REG_CONFIG_OS_MASK (0x8000) ///< OS Mask #define ADS1015_REG_CONFIG_OS_SINGLE \ (0x8000) ///< Write: Set to start a single-conversion #define ADS1015_REG_CONFIG_OS_BUSY \ (0x0000) ///< Read: Bit = 0 when conversion is in progress #define ADS1015_REG_CONFIG_OS_NOTBUSY \ (0x8000) ///< Read: Bit = 1 when device is not performing a conversion #define ADS1015_REG_CONFIG_MUX_MASK (0x7000) ///< Mux Mask #define ADS1015_REG_CONFIG_MUX_DIFF_0_1 \ (0x0000) ///< Differential P = AIN0, N = AIN1 (default) #define ADS1015_REG_CONFIG_MUX_DIFF_0_3 \ (0x1000) ///< Differential P = AIN0, N = AIN3 #define ADS1015_REG_CONFIG_MUX_DIFF_1_3 \ (0x2000) ///< Differential P = AIN1, N = AIN3 #define ADS1015_REG_CONFIG_MUX_DIFF_2_3 \ (0x3000) ///< Differential P = AIN2, N = AIN3 #define ADS1015_REG_CONFIG_MUX_SINGLE_0 (0x4000) ///< Single-ended AIN0 #define ADS1015_REG_CONFIG_MUX_SINGLE_1 (0x5000) ///< Single-ended AIN1 #define ADS1015_REG_CONFIG_MUX_SINGLE_2 (0x6000) ///< Single-ended AIN2 #define ADS1015_REG_CONFIG_MUX_SINGLE_3 (0x7000) ///< Single-ended AIN3 #define ADS1015_REG_CONFIG_PGA_MASK (0x0E00) ///< PGA Mask #define ADS1015_REG_CONFIG_PGA_6_144V (0x0000) ///< +/-6.144V range = Gain 2/3 #define ADS1015_REG_CONFIG_PGA_4_096V (0x0200) ///< +/-4.096V range = Gain 1 #define ADS1015_REG_CONFIG_PGA_2_048V \ (0x0400) ///< +/-2.048V range = Gain 2 (default) #define ADS1015_REG_CONFIG_PGA_1_024V (0x0600) ///< +/-1.024V range = Gain 4 #define ADS1015_REG_CONFIG_PGA_0_512V (0x0800) ///< +/-0.512V range = Gain 8 #define ADS1015_REG_CONFIG_PGA_0_256V (0x0A00) ///< +/-0.256V range = Gain 16 #define ADS1015_REG_CONFIG_MODE_MASK (0x0100) ///< Mode Mask #define ADS1015_REG_CONFIG_MODE_CONTIN (0x0000) ///< Continuous conversion mode #define ADS1015_REG_CONFIG_MODE_SINGLE \ (0x0100) ///< Power-down single-shot mode (default) #define ADS1015_REG_CONFIG_DR_MASK (0x00E0) ///< Data Rate Mask #define ADS1015_REG_CONFIG_DR_128SPS (0x0000) ///< 128 samples per second #define ADS1015_REG_CONFIG_DR_250SPS (0x0020) ///< 250 samples per second #define ADS1015_REG_CONFIG_DR_490SPS (0x0040) ///< 490 samples per second #define ADS1015_REG_CONFIG_DR_920SPS (0x0060) ///< 920 samples per second #define ADS1015_REG_CONFIG_DR_1600SPS \ (0x0080) ///< 1600 samples per second (default) #define ADS1015_REG_CONFIG_DR_2400SPS (0x00A0) ///< 2400 samples per second #define ADS1015_REG_CONFIG_DR_3300SPS (0x00C0) ///< 3300 samples per second #define ADS1015_REG_CONFIG_CMODE_MASK (0x0010) ///< CMode Mask #define ADS1015_REG_CONFIG_CMODE_TRAD \ (0x0000) ///< Traditional comparator with hysteresis (default) #define ADS1015_REG_CONFIG_CMODE_WINDOW (0x0010) ///< Window comparator #define ADS1015_REG_CONFIG_CPOL_MASK (0x0008) ///< CPol Mask #define ADS1015_REG_CONFIG_CPOL_ACTVLOW \ (0x0000) ///< ALERT/RDY pin is low when active (default) #define ADS1015_REG_CONFIG_CPOL_ACTVHI \ (0x0008) ///< ALERT/RDY pin is high when active #define ADS1015_REG_CONFIG_CLAT_MASK \ (0x0004) ///< Determines if ALERT/RDY pin latches once asserted #define ADS1015_REG_CONFIG_CLAT_NONLAT \ (0x0000) ///< Non-latching comparator (default) #define ADS1015_REG_CONFIG_CLAT_LATCH (0x0004) ///< Latching comparator #define ADS1015_REG_CONFIG_CQUE_MASK (0x0003) ///< CQue Mask #define ADS1015_REG_CONFIG_CQUE_1CONV \ (0x0000) ///< Assert ALERT/RDY after one conversions #define ADS1015_REG_CONFIG_CQUE_2CONV \ (0x0001) ///< Assert ALERT/RDY after two conversions #define ADS1015_REG_CONFIG_CQUE_4CONV \ (0x0002) ///< Assert ALERT/RDY after four conversions #define ADS1015_REG_CONFIG_CQUE_NONE \ (0x0003) ///< Disable the comparator and put ALERT/RDY in high state (default) /*=========================================================================*/ /** Gain settings */ typedef enum { GAIN_TWOTHIRDS = ADS1015_REG_CONFIG_PGA_6_144V, GAIN_ONE = ADS1015_REG_CONFIG_PGA_4_096V, GAIN_TWO = ADS1015_REG_CONFIG_PGA_2_048V, GAIN_FOUR = ADS1015_REG_CONFIG_PGA_1_024V, GAIN_EIGHT = ADS1015_REG_CONFIG_PGA_0_512V, GAIN_SIXTEEN = ADS1015_REG_CONFIG_PGA_0_256V } adsGain_t; /**************************************************************************/ /*! @brief Sensor driver for the Adafruit ADS1015 ADC breakout. */ /**************************************************************************/ class Adafruit_ADS1015 { protected: // Instance-specific properties uint8_t m_i2cAddress; ///< the I2C address uint8_t m_conversionDelay; ///< conversion deay uint8_t m_bitShift; ///< bit shift amount adsGain_t m_gain; ///< ADC gain public: Adafruit_ADS1015(uint8_t i2cAddress = ADS1015_ADDRESS); void begin(void); uint16_t readADC_SingleEnded(uint8_t channel); int16_t readADC_Differential_0_1(void); int16_t readADC_Differential_2_3(void); void startComparator_SingleEnded(uint8_t channel, int16_t threshold); int16_t getLastConversionResults(); void setGain(adsGain_t gain); adsGain_t getGain(void); private: }; /**************************************************************************/ /*! @brief Sensor driver for the Adafruit ADS1115 ADC breakout. */ /**************************************************************************/ class Adafruit_ADS1115 : public Adafruit_ADS1015 { public: Adafruit_ADS1115(uint8_t i2cAddress = ADS1015_ADDRESS); private: }; #endif