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// ----------------------------------------------------------------------------- |
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// Energy monitor sensor |
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// ----------------------------------------------------------------------------- |
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#pragma once |
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#include "Arduino.h" |
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#include "BaseSensor.h" |
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#include "EmonSensor.h" |
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#include <ADS1115.h> |
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/* |
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#if I2C_USE_BRZO |
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#include <brzo_i2c.h> |
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#else |
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#include <Wire.h> |
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#endif |
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#define ADS1015_CONVERSIONDELAY (1) |
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#define ADS1115_CONVERSIONDELAY (8) |
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#define ADS1015_BIT_SHIFT (4) |
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#define ADS1115_BIT_SHIFT (0) |
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#define ADS1015_REG_POINTER_MASK (0x03) |
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#define ADS1015_REG_POINTER_CONVERT (0x00) |
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#define ADS1015_REG_POINTER_CONFIG (0x01) |
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#define ADS1015_REG_POINTER_LOWTHRESH (0x02) |
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#define ADS1015_REG_POINTER_HITHRESH (0x03) |
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#define ADS1015_REG_CONFIG_OS_MASK (0x8000) |
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#define ADS1015_REG_CONFIG_OS_SINGLE (0x8000) // Write: Set to start a single-conversion |
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#define ADS1015_REG_CONFIG_OS_BUSY (0x0000) // Read: Bit = 0 when conversion is in progress |
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#define ADS1015_REG_CONFIG_OS_NOTBUSY (0x8000) // Read: Bit = 1 when device is not performing a conversion |
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#define ADS1015_REG_CONFIG_MUX_MASK (0x7000) |
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#define ADS1015_REG_CONFIG_MUX_DIFF_0_1 (0x0000) // Differential P = AIN0, N = AIN1 (default) |
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#define ADS1015_REG_CONFIG_MUX_DIFF_0_3 (0x1000) // Differential P = AIN0, N = AIN3 |
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#define ADS1015_REG_CONFIG_MUX_DIFF_1_3 (0x2000) // Differential P = AIN1, N = AIN3 |
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#define ADS1015_REG_CONFIG_MUX_DIFF_2_3 (0x3000) // Differential P = AIN2, N = AIN3 |
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#define ADS1015_REG_CONFIG_MUX_SINGLE_0 (0x4000) // Single-ended AIN0 |
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#define ADS1015_REG_CONFIG_MUX_SINGLE_1 (0x5000) // Single-ended AIN1 |
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#define ADS1015_REG_CONFIG_MUX_SINGLE_2 (0x6000) // Single-ended AIN2 |
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#define ADS1015_REG_CONFIG_MUX_SINGLE_3 (0x7000) // Single-ended AIN3 |
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#define ADS1015_REG_CONFIG_PGA_MASK (0x0E00) |
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#define ADS1015_REG_CONFIG_PGA_6_144V (0x0000) // +/-6.144V range = Gain 2/3 |
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#define ADS1015_REG_CONFIG_PGA_4_096V (0x0200) // +/-4.096V range = Gain 1 |
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#define ADS1015_REG_CONFIG_PGA_2_048V (0x0400) // +/-2.048V range = Gain 2 (default) |
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#define ADS1015_REG_CONFIG_PGA_1_024V (0x0600) // +/-1.024V range = Gain 4 |
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#define ADS1015_REG_CONFIG_PGA_0_512V (0x0800) // +/-0.512V range = Gain 8 |
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#define ADS1015_REG_CONFIG_PGA_0_256V (0x0A00) // +/-0.256V range = Gain 16 |
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#define ADS1015_REG_CONFIG_MODE_MASK (0x0100) |
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#define ADS1015_REG_CONFIG_MODE_CONTIN (0x0000) // Continuous conversion mode |
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#define ADS1015_REG_CONFIG_MODE_SINGLE (0x0100) // Power-down single-shot mode (default) |
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#define ADS1015_REG_CONFIG_DR_MASK (0x00E0) |
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#define ADS1015_REG_CONFIG_DR_128SPS (0x0000) // 128 samples per second |
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#define ADS1015_REG_CONFIG_DR_250SPS (0x0020) // 250 samples per second |
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#define ADS1015_REG_CONFIG_DR_490SPS (0x0040) // 490 samples per second |
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#define ADS1015_REG_CONFIG_DR_920SPS (0x0060) // 920 samples per second |
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#define ADS1015_REG_CONFIG_DR_1600SPS (0x0080) // 1600 samples per second (default) |
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#define ADS1015_REG_CONFIG_DR_2400SPS (0x00A0) // 2400 samples per second |
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#define ADS1015_REG_CONFIG_DR_3300SPS (0x00C0) // 3300 samples per second |
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#define ADS1015_REG_CONFIG_CMODE_MASK (0x0010) |
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#define ADS1015_REG_CONFIG_CMODE_TRAD (0x0000) // Traditional comparator with hysteresis (default) |
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#define ADS1015_REG_CONFIG_CMODE_WINDOW (0x0010) // Window comparator |
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#define ADS1015_REG_CONFIG_CPOL_MASK (0x0008) |
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#define ADS1015_REG_CONFIG_CPOL_ACTVLOW (0x0000) // ALERT/RDY pin is low when active (default) |
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#define ADS1015_REG_CONFIG_CPOL_ACTVHI (0x0008) // ALERT/RDY pin is high when active |
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#define ADS1015_REG_CONFIG_CLAT_MASK (0x0004) // Determines if ALERT/RDY pin latches once asserted |
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#define ADS1015_REG_CONFIG_CLAT_NONLAT (0x0000) // Non-latching comparator (default) |
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#define ADS1015_REG_CONFIG_CLAT_LATCH (0x0004) // Latching comparator |
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#define ADS1015_REG_CONFIG_CQUE_MASK (0x0003) |
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#define ADS1015_REG_CONFIG_CQUE_1CONV (0x0000) // Assert ALERT/RDY after one conversions |
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#define ADS1015_REG_CONFIG_CQUE_2CONV (0x0001) // Assert ALERT/RDY after two conversions |
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#define ADS1015_REG_CONFIG_CQUE_4CONV (0x0002) // Assert ALERT/RDY after four conversions |
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#define ADS1015_REG_CONFIG_CQUE_NONE (0x0003) // Disable the comparator and put ALERT/RDY in high state (default) |
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*/ |
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#define EMON_ADS1115_PORTS 4 |
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#define EMON_ADS1115_MAGNITUDES_PER_PORT 2 |
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class EmonADS1115Sensor : public EmonSensor { |
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public: |
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EmonADS1115Sensor(unsigned char address, unsigned char mask, double voltage, unsigned char bits, double ref, double ratio): EmonSensor(voltage, bits, ref, ratio) { |
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// Cache |
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_address = address; |
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_mask = mask; |
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_ports = 0; |
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while (mask) { |
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if (mask & 0x01) ++_ports; |
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mask = mask >> 1; |
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} |
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_count = _ports * EMON_ADS1115_MAGNITUDES_PER_PORT; |
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// Initialize |
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_ads = new ADS1115(_address); |
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_ads->initialize(); |
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_ads->setMode(ADS1115_MODE_SINGLESHOT); |
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_ads->setRate(ADS1115_RATE_860); |
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_ads->setGain(ADS1115_PGA_4P096); |
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_ads->setConversionReadyPinMode(); |
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// warmup |
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read(_address); |
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} |
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// Descriptive name of the sensor |
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String name() { |
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char buffer[30]; |
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snprintf(buffer, sizeof(buffer), "EMON @ ADS1115 @ I2C (0x%02X)", _address); |
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return String(buffer); |
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} |
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// Descriptive name of the slot # index |
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String slot(unsigned char index) { |
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char buffer[35]; |
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unsigned char port = getPort(index / EMON_ADS1115_MAGNITUDES_PER_PORT); |
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snprintf(buffer, sizeof(buffer), "EMON @ ADS1115 (A%d) @ I2C (0x%02X)", port, _address); |
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return String(buffer); |
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} |
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// Type for slot # index |
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magnitude_t type(unsigned char index) { |
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if (index < _count) { |
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_error = SENSOR_ERROR_OK; |
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unsigned char port = getPort(index / EMON_ADS1115_MAGNITUDES_PER_PORT); |
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unsigned char magnitude = index % EMON_ADS1115_MAGNITUDES_PER_PORT; |
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if (magnitude == 0) return MAGNITUDE_CURRENT; |
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if (magnitude == 1) return MAGNITUDE_POWER_APPARENT; |
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//if (magnitude == 2) return MAGNITUDE_ENERGY; |
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//if (magnitude == 3) return MAGNITUDE_ENERGY_DELTA; |
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} |
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_error = SENSOR_ERROR_OUT_OF_RANGE; |
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return MAGNITUDE_NONE; |
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} |
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void pre() { |
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//static unsigned long last = 0; |
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for (unsigned char index=0; index<_ports; index++) { |
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unsigned char port = getPort(index); |
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_current[port] = read(port); |
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//if (last > 0) { |
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// _delta[port] = _current[port] * _voltage * (millis() - last) / 1000; |
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//} |
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//_energy[port] += _delta[port]; |
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} |
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//last = millis(); |
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} |
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// Current value for slot # index |
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double value(unsigned char index) { |
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if (index < _count) { |
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_error = SENSOR_ERROR_OK; |
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unsigned char port = getPort(index / EMON_ADS1115_MAGNITUDES_PER_PORT); |
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unsigned char magnitude = index % EMON_ADS1115_MAGNITUDES_PER_PORT; |
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if (magnitude == 0) return _current[port]; |
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if (magnitude == 1) return _current[port] * _voltage; |
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//if (magnitude == 2) return _energy[port]; |
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//if (magnitude == 3) return _delta[port]; |
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} |
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_error = SENSOR_ERROR_OUT_OF_RANGE; |
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return 0; |
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} |
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protected: |
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unsigned char getPort(unsigned char index) { |
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unsigned char count = 0; |
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unsigned char bit = 1; |
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for (unsigned char i=0; i<EMON_ADS1115_PORTS; i++) { |
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if ((_mask & bit) == bit) { |
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if (count == index) return i; |
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++count; |
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} |
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bit <<= 1; |
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} |
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return 0; |
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} |
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unsigned int readADC(unsigned char port) { |
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if (port < EMON_ADS1115_PORTS) { |
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_ads->setMultiplexer(port + 4); |
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return _ads->getConversion(true); |
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} |
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return 0; |
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} |
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/* |
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unsigned int readADC(unsigned char port) { |
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if (port > 3) return 0; |
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port = 3; |
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unsigned int value; |
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// Start with default values |
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uint16_t config = 0; |
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config |= ADS1015_REG_CONFIG_CQUE_NONE; // Disable the comparator (default val) |
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config |= ADS1015_REG_CONFIG_CLAT_NONLAT; // Non-latching (default val) |
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config |= ADS1015_REG_CONFIG_CPOL_ACTVLOW; // Alert/Rdy active low (default val) |
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config |= ADS1015_REG_CONFIG_CMODE_TRAD; // Traditional comparator (default val) |
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config |= ADS1015_REG_CONFIG_DR_1600SPS; // 1600 samples per second (default) |
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config |= ADS1015_REG_CONFIG_MODE_SINGLE; // Single-shot mode (default) |
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config |= ADS1015_REG_CONFIG_OS_SINGLE; // Set 'start single-conversion' bit |
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config |= EMON_ADS1115_GAIN; // Set PGA/voltage range |
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config |= ((port + 4) << 12); // Set single-ended input channel |
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Serial.println(config); |
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// Write config register to the ADC |
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#if I2C_USE_BRZO |
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uint8_t buffer[3]; |
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buffer[0] = ADS1015_REG_POINTER_CONFIG; |
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buffer[1] = config >> 8; |
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buffer[2] = config & 0xFF; |
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brzo_i2c_start_transaction(_address, I2C_SCL_FREQUENCY); |
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brzo_i2c_write(buffer, 3, false); |
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//brzo_i2c_end_transaction(); |
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#else |
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Wire.beginTransmission(_address); |
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Wire.write((uint8_t) ADS1015_REG_POINTER_CONFIG); |
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Wire.write((uint8_t) (config >> 8)); |
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Wire.write((uint8_t) (config & 0xFF)); |
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Wire.endTransmission(); |
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#endif |
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// Wait for the conversion to complete |
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unsigned long start = millis(); |
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while (millis() - start < ADS1115_CONVERSIONDELAY) delay(1); |
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// Read the conversion results |
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// Shift 12-bit results right 4 bits for the ADS1015 |
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#if I2C_USE_BRZO |
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buffer[0] = ADS1015_REG_POINTER_CONVERT; |
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//brzo_i2c_start_transaction(_address, I2C_SCL_FREQUENCY); |
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brzo_i2c_write(buffer, 1, false); |
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brzo_i2c_read(buffer, 2, false); |
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brzo_i2c_end_transaction(); |
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value = (buffer[0] & 0x0F) << 8; |
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value |= buffer[1]; |
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#else |
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Wire.beginTransmission(_address); |
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Wire.write(ADS1015_REG_POINTER_CONVERT); |
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Wire.endTransmission(); |
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Wire.requestFrom(_address, (unsigned char) 2); |
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value = Wire.read() << 8; |
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value |= Wire.read(); |
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#endif |
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return value; |
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} |
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*/ |
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ADS1115 * _ads; |
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unsigned char _address; |
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unsigned char _mask; |
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unsigned char _ports; |
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double _current[EMON_ADS1115_PORTS] = {0, 0, 0, 0}; |
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//unsigned long _energy[EMON_ADS1115_PORTS] = {0, 0, 0, 0}; |
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//unsigned long _delta[EMON_ADS1115_PORTS] = {0, 0, 0, 0}; |
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}; |