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141 lines
3.5 KiB
141 lines
3.5 KiB
/*
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POWER EMON MODULE
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Copyright (C) 2016-2017 by Xose Pérez <xose dot perez at gmail dot com>
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*/
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#if (POWER_PROVIDER & POWER_PROVIDER_EMON == POWER_PROVIDER_EMON)
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// -----------------------------------------------------------------------------
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// MODULE GLOBALS AND CACHE
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// -----------------------------------------------------------------------------
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#include <EmonLiteESP.h>
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EmonLiteESP _emon;
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#if POWER_PROVIDER == POWER_PROVIDER_EMON_ADC121
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#include "brzo_i2c.h"
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// ADC121 Registers
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#define ADC121_REG_RESULT 0x00
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#define ADC121_REG_ALERT 0x01
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#define ADC121_REG_CONFIG 0x02
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#define ADC121_REG_LIMITL 0x03
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#define ADC121_REG_LIMITH 0x04
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#define ADC121_REG_HYST 0x05
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#define ADC121_REG_CONVL 0x06
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#define ADC121_REG_CONVH 0x07
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#endif // POWER_PROVIDER == POWER_PROVIDER_EMON_ADC121
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// -----------------------------------------------------------------------------
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// HAL
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// -----------------------------------------------------------------------------
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unsigned int currentCallback() {
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#if POWER_PROVIDER == POWER_PROVIDER_EMON_ANALOG
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return analogRead(0);
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#endif // POWER_PROVIDER == POWER_PROVIDER_EMON_ANALOG
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#if POWER_PROVIDER == POWER_PROVIDER_EMON_ADC121
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uint8_t buffer[2];
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brzo_i2c_start_transaction(ADC121_I2C_ADDRESS, I2C_SCL_FREQUENCY);
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buffer[0] = ADC121_REG_RESULT;
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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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unsigned int value;
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value = (buffer[0] & 0x0F) << 8;
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value |= buffer[1];
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return value;
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#endif // POWER_PROVIDER == POWER_PROVIDER_EMON_ADC121
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}
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// -----------------------------------------------------------------------------
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// POWER API
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// -----------------------------------------------------------------------------
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double _powerCurrent() {
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static unsigned long last = 0;
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static double current = 0;
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if (millis() - last > 1000) {
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last = millis();
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current = _emon.getCurrent(EMON_SAMPLES);
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current -= EMON_CURRENT_OFFSET;
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if (current < 0) current = 0;
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}
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return current;
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}
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double _powerVoltage() {
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return _power_voltage;
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}
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double _powerActivePower() {
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return _powerApparentPower();
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}
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double _powerApparentPower() {
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return _powerCurrent() * _powerVoltage();
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}
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double _powerReactivePower() {
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return 0;
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}
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double _powerPowerFactor() {
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return 1;
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}
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void _powerEnabledProvider() {
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// Nothing to do
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}
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void _powerConfigureProvider() {
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_emon.setCurrentRatio(getSetting("powerRatioC", EMON_CURRENT_RATIO).toFloat());
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_power_voltage = getSetting("powerVoltage", POWER_VOLTAGE).toFloat();
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}
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void _powerSetupProvider() {
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_emon.initCurrent(currentCallback, EMON_ADC_BITS, EMON_REFERENCE_VOLTAGE, EMON_CURRENT_RATIO);
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#if POWER_PROVIDER == POWER_PROVIDER_EMON_ADC121
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uint8_t buffer[2];
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buffer[0] = ADC121_REG_CONFIG;
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buffer[1] = 0x00;
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brzo_i2c_start_transaction(ADC121_I2C_ADDRESS, I2C_SCL_FREQUENCY);
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brzo_i2c_write(buffer, 2, false);
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brzo_i2c_end_transaction();
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#endif
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powerConfigureProvider();
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_emon.warmup();
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}
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void _powerLoopProvider(bool before) {
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if (before) {
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static unsigned long last = 0;
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if (millis() - last > POWER_READ_INTERVAL) {
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last = millis();
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_power_newdata = true;
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}
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}
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}
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#endif // (POWER_PROVIDER & POWER_PROVIDER_EMON == POWER_PROVIDER_EMON)
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