Fork of the espurna firmware for `mhsw` switches
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/*
POWER V9261F MODULE
Copyright (C) 2016-2017 by Xose Pérez <xose dot perez at gmail dot com>
*/
#if POWER_PROVIDER == POWER_PROVIDER_V9261F
// -----------------------------------------------------------------------------
// MODULE GLOBALS AND CACHE
// -----------------------------------------------------------------------------
#include <SoftwareSerial.h>
SoftwareSerial * _v9261f_uart;
double _v9261f_active = 0;
double _v9261f_reactive = 0;
double _v9261f_voltage = 0;
double _v9261f_current = 0;
unsigned char _v9261f_data[24];
// -----------------------------------------------------------------------------
// HAL
// -----------------------------------------------------------------------------
void _v9261fRead() {
static unsigned char state = 0;
static unsigned long last = 0;
static bool found = false;
static unsigned char index = 0;
if (state == 0) {
while (_v9261f_uart->available()) {
_v9261f_uart->flush();
found = true;
last = millis();
}
if (found && (millis() - last > V9261F_SYNC_INTERVAL)) {
_v9261f_uart->flush();
index = 0;
state = 1;
}
} else if (state == 1) {
while (_v9261f_uart->available()) {
_v9261f_uart->read();
if (index++ >= 7) {
_v9261f_uart->flush();
index = 0;
state = 2;
}
}
} else if (state == 2) {
while (_v9261f_uart->available()) {
_v9261f_data[index] = _v9261f_uart->read();
if (index++ >= 19) {
_v9261f_uart->flush();
last = millis();
state = 3;
}
}
} else if (state == 3) {
if (_v9261fChecksum()) {
_v9261f_active = (double) (
(_v9261f_data[3]) +
(_v9261f_data[4] << 8) +
(_v9261f_data[5] << 16) +
(_v9261f_data[6] << 24)
) / V9261F_POWER_FACTOR;
_v9261f_reactive = (double) (
(_v9261f_data[7]) +
(_v9261f_data[8] << 8) +
(_v9261f_data[9] << 16) +
(_v9261f_data[10] << 24)
) / V9261F_RPOWER_FACTOR;
_v9261f_voltage = (double) (
(_v9261f_data[11]) +
(_v9261f_data[12] << 8) +
(_v9261f_data[13] << 16) +
(_v9261f_data[14] << 24)
) / V9261F_VOLTAGE_FACTOR;
_v9261f_current = (double) (
(_v9261f_data[15]) +
(_v9261f_data[16] << 8) +
(_v9261f_data[17] << 16) +
(_v9261f_data[18] << 24)
) / V9261F_CURRENT_FACTOR;
if (_v9261f_active < 0) _v9261f_active = 0;
if (_v9261f_reactive < 0) _v9261f_reactive = 0;
if (_v9261f_voltage < 0) _v9261f_voltage = 0;
if (_v9261f_current < 0) _v9261f_current = 0;
_power_newdata = true;
}
last = millis();
index = 0;
state = 4;
} else if (state == 4) {
while (_v9261f_uart->available()) {
_v9261f_uart->flush();
last = millis();
}
if (millis() - last > V9261F_SYNC_INTERVAL) {
state = 1;
}
}
}
bool _v9261fChecksum() {
unsigned char checksum = 0;
for (unsigned char i = 0; i < 19; i++) {
checksum = checksum + _v9261f_data[i];
}
checksum = ~checksum + 0x33;
return checksum == _v9261f_data[19];
}
// -----------------------------------------------------------------------------
// POWER API
// -----------------------------------------------------------------------------
double _powerCurrent() {
return _v9261f_current;
}
double _powerVoltage() {
return _v9261f_voltage;
}
double _powerActivePower() {
return _v9261f_active;
}
double _powerApparentPower() {
return sqrt(_v9261f_reactive * _v9261f_reactive + _v9261f_active * _v9261f_active);
}
double _powerReactivePower() {
return _v9261f_reactive;
}
double _powerPowerFactor() {
double apparent = _powerApparentPower();
if (apparent > 0) return _powerActivePower() / apparent;
return 1;
}
void _powerEnabledProvider() {
// Nothing to do
}
void _powerConfigureProvider() {
// Nothing to do
}
void _powerSetupProvider() {
_v9261f_uart = new SoftwareSerial(V9261F_PIN, SW_SERIAL_UNUSED_PIN, V9261F_PIN_INVERSE, 256);
_v9261f_uart->begin(V9261F_BAUDRATE);
}
void _powerLoopProvider(bool before) {
if (before) {
_v9261fRead();
}
}
#endif // POWER_PROVIDER & POWER_PROVIDER_EMON