You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
349 lines
11 KiB
349 lines
11 KiB
// -----------------------------------------------------------------------------
|
|
// ECH1560 based power monitor
|
|
// Copyright (C) 2017-2018 by Xose Pérez <xose dot perez at gmail dot com>
|
|
// -----------------------------------------------------------------------------
|
|
|
|
#if SENSOR_SUPPORT && ECH1560_SUPPORT
|
|
|
|
#pragma once
|
|
|
|
#include "Arduino.h"
|
|
#include "BaseSensor.h"
|
|
|
|
class ECH1560Sensor : public BaseSensor {
|
|
|
|
public:
|
|
|
|
// ---------------------------------------------------------------------
|
|
// Public
|
|
// ---------------------------------------------------------------------
|
|
|
|
ECH1560Sensor(): BaseSensor(), _data() {
|
|
_count = 3;
|
|
_sensor_id = SENSOR_ECH1560_ID;
|
|
}
|
|
|
|
~ECH1560Sensor() {
|
|
_enableInterrupts(false);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
|
|
void setCLK(unsigned char clk) {
|
|
if (_clk == clk) return;
|
|
_clk = clk;
|
|
_dirty = true;
|
|
}
|
|
|
|
void setMISO(unsigned char miso) {
|
|
if (_miso == miso) return;
|
|
_miso = miso;
|
|
_dirty = true;
|
|
}
|
|
|
|
void setInverted(bool inverted) {
|
|
_inverted = inverted;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
|
|
unsigned char getCLK() {
|
|
return _clk;
|
|
}
|
|
|
|
unsigned char getMISO() {
|
|
return _miso;
|
|
}
|
|
|
|
bool getInverted() {
|
|
return _inverted;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
// Sensor API
|
|
// ---------------------------------------------------------------------
|
|
|
|
// Initialization method, must be idempotent
|
|
void begin() {
|
|
|
|
if (!_dirty) return;
|
|
|
|
pinMode(_clk, INPUT);
|
|
pinMode(_miso, INPUT);
|
|
_enableInterrupts(true);
|
|
|
|
_dirty = false;
|
|
_ready = true;
|
|
|
|
}
|
|
|
|
// Loop-like method, call it in your main loop
|
|
void tick() {
|
|
if (_dosync) _sync();
|
|
}
|
|
|
|
// Descriptive name of the sensor
|
|
String description() {
|
|
char buffer[35];
|
|
snprintf(buffer, sizeof(buffer), "ECH1560 (CLK,SDO) @ GPIO(%u,%u)", _clk, _miso);
|
|
return String(buffer);
|
|
}
|
|
|
|
// Descriptive name of the slot # index
|
|
String slot(unsigned char index) {
|
|
return description();
|
|
};
|
|
|
|
// Address of the sensor (it could be the GPIO or I2C address)
|
|
String address(unsigned char index) {
|
|
char buffer[6];
|
|
snprintf(buffer, sizeof(buffer), "%u:%u", _clk, _miso);
|
|
return String(buffer);
|
|
}
|
|
|
|
// Type for slot # index
|
|
unsigned char type(unsigned char index) {
|
|
if (index == 0) return MAGNITUDE_CURRENT;
|
|
if (index == 1) return MAGNITUDE_VOLTAGE;
|
|
if (index == 2) return MAGNITUDE_POWER_APPARENT;
|
|
return MAGNITUDE_NONE;
|
|
}
|
|
|
|
// Current value for slot # index
|
|
double value(unsigned char index) {
|
|
if (index == 0) return _current;
|
|
if (index == 1) return _voltage;
|
|
if (index == 2) return _apparent;
|
|
return 0;
|
|
}
|
|
|
|
void ICACHE_RAM_ATTR handleInterrupt(unsigned char gpio) {
|
|
|
|
(void) gpio;
|
|
|
|
// if we are trying to find the sync-time (CLK goes high for 1-2ms)
|
|
if (_dosync == false) {
|
|
|
|
_clk_count = 0;
|
|
|
|
// register how long the ClkHigh is high to evaluate if we are at the part where clk goes high for 1-2 ms
|
|
while (digitalRead(_clk) == HIGH) {
|
|
_clk_count += 1;
|
|
delayMicroseconds(30); //can only use delayMicroseconds in an interrupt.
|
|
}
|
|
|
|
// if the Clk was high between 1 and 2 ms than, its a start of a SPI-transmission
|
|
if (_clk_count >= 33 && _clk_count <= 67) {
|
|
_dosync = true;
|
|
}
|
|
|
|
// we are in sync and logging CLK-highs
|
|
} else {
|
|
|
|
// increment an integer to keep track of how many bits we have read.
|
|
_bits_count += 1;
|
|
_nextbit = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
protected:
|
|
|
|
// ---------------------------------------------------------------------
|
|
// Interrupt management
|
|
// ---------------------------------------------------------------------
|
|
|
|
void _attach(ECH1560Sensor * instance, unsigned char gpio, unsigned char mode);
|
|
void _detach(unsigned char gpio);
|
|
|
|
void _enableInterrupts(bool value) {
|
|
|
|
static unsigned char _interrupt_clk = GPIO_NONE;
|
|
|
|
if (value) {
|
|
if (_interrupt_clk != _clk) {
|
|
if (_interrupt_clk != GPIO_NONE) _detach(_interrupt_clk);
|
|
_attach(this, _clk, RISING);
|
|
_interrupt_clk = _clk;
|
|
}
|
|
} else if (_interrupt_clk != GPIO_NONE) {
|
|
_detach(_interrupt_clk);
|
|
_interrupt_clk = GPIO_NONE;
|
|
}
|
|
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
// Protected
|
|
// ---------------------------------------------------------------------
|
|
|
|
void _sync() {
|
|
|
|
unsigned int byte1 = 0;
|
|
unsigned int byte2 = 0;
|
|
unsigned int byte3 = 0;
|
|
|
|
_bits_count = 0;
|
|
while (_bits_count < 40); // skip the uninteresting 5 first bytes
|
|
_bits_count = 0;
|
|
|
|
while (_bits_count < 24) { // loop through the next 3 Bytes (6-8) and save byte 6 and 7 in byte1 and byte2
|
|
|
|
if (_nextbit) {
|
|
|
|
if (_bits_count < 9) { // first Byte/8 bits in byte1
|
|
|
|
byte1 = byte1 << 1;
|
|
if (digitalRead(_miso) == HIGH) byte1 |= 1;
|
|
_nextbit = false;
|
|
|
|
} else if (_bits_count < 17) { // bit 9-16 is byte 7, store in byte2
|
|
|
|
byte2 = byte2 << 1;
|
|
if (digitalRead(_miso) == HIGH) byte2 |= 1;
|
|
_nextbit = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (byte2 != 3) { // if bit byte2 is not 3, we have reached the important part, U is allready in byte1 and byte2 and next 8 Bytes will give us the Power.
|
|
|
|
// voltage = 2 * (byte1 + byte2 / 255)
|
|
_voltage = 2.0 * ((float) byte1 + (float) byte2 / 255.0);
|
|
|
|
// power:
|
|
_bits_count = 0;
|
|
while (_bits_count < 40); // skip the uninteresting 5 first bytes
|
|
_bits_count = 0;
|
|
|
|
byte1 = 0;
|
|
byte2 = 0;
|
|
byte3 = 0;
|
|
|
|
while (_bits_count < 24) { //store byte 6, 7 and 8 in byte1 and byte2 & byte3.
|
|
|
|
if (_nextbit) {
|
|
|
|
if (_bits_count < 9) {
|
|
|
|
byte1 = byte1 << 1;
|
|
if (digitalRead(_miso) == HIGH) byte1 |= 1;
|
|
_nextbit = false;
|
|
|
|
} else if (_bits_count < 17) {
|
|
|
|
byte2 = byte2 << 1;
|
|
if (digitalRead(_miso) == HIGH) byte2 |= 1;
|
|
_nextbit = false;
|
|
|
|
} else {
|
|
|
|
byte3 = byte3 << 1;
|
|
if (digitalRead(_miso) == HIGH) byte3 |= 1;
|
|
_nextbit = false;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_inverted) {
|
|
byte1 = 255 - byte1;
|
|
byte2 = 255 - byte2;
|
|
byte3 = 255 - byte3;
|
|
}
|
|
|
|
// power = (byte1*255+byte2+byte3/255)/2
|
|
_apparent = ( (float) byte1 * 255 + (float) byte2 + (float) byte3 / 255.0) / 2;
|
|
_current = _apparent / _voltage;
|
|
|
|
_dosync = false;
|
|
|
|
}
|
|
|
|
// If byte2 is not 3 or something else than 0, something is wrong!
|
|
if (byte2 == 0) {
|
|
_dosync = false;
|
|
#if SENSOR_DEBUG
|
|
DEBUG_MSG_P(PSTR("Nothing connected, or out of sync!\n"));
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------
|
|
|
|
unsigned char _clk = 0;
|
|
unsigned char _miso = 0;
|
|
bool _inverted = false;
|
|
|
|
volatile long _bits_count = 0;
|
|
volatile long _clk_count = 0;
|
|
volatile bool _dosync = false;
|
|
volatile bool _nextbit = true;
|
|
|
|
double _apparent = 0;
|
|
double _voltage = 0;
|
|
double _current = 0;
|
|
|
|
unsigned char _data[24];
|
|
|
|
};
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Interrupt helpers
|
|
// -----------------------------------------------------------------------------
|
|
|
|
ECH1560Sensor * _ech1560_sensor_instance[10] = {NULL};
|
|
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr(unsigned char gpio) {
|
|
unsigned char index = gpio > 5 ? gpio-6 : gpio;
|
|
if (_ech1560_sensor_instance[index]) {
|
|
_ech1560_sensor_instance[index]->handleInterrupt(gpio);
|
|
}
|
|
}
|
|
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_0() { _ech1560_sensor_isr(0); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_1() { _ech1560_sensor_isr(1); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_2() { _ech1560_sensor_isr(2); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_3() { _ech1560_sensor_isr(3); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_4() { _ech1560_sensor_isr(4); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_5() { _ech1560_sensor_isr(5); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_12() { _ech1560_sensor_isr(12); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_13() { _ech1560_sensor_isr(13); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_14() { _ech1560_sensor_isr(14); }
|
|
void ICACHE_RAM_ATTR _ech1560_sensor_isr_15() { _ech1560_sensor_isr(15); }
|
|
|
|
static void (*_ech1560_sensor_isr_list[10])() = {
|
|
_ech1560_sensor_isr_0, _ech1560_sensor_isr_1, _ech1560_sensor_isr_2,
|
|
_ech1560_sensor_isr_3, _ech1560_sensor_isr_4, _ech1560_sensor_isr_5,
|
|
_ech1560_sensor_isr_12, _ech1560_sensor_isr_13, _ech1560_sensor_isr_14,
|
|
_ech1560_sensor_isr_15
|
|
};
|
|
|
|
void ECH1560Sensor::_attach(ECH1560Sensor * instance, unsigned char gpio, unsigned char mode) {
|
|
if (!gpioValid(gpio)) return;
|
|
_detach(gpio);
|
|
unsigned char index = gpio > 5 ? gpio-6 : gpio;
|
|
_ech1560_sensor_instance[index] = instance;
|
|
attachInterrupt(gpio, _ech1560_sensor_isr_list[index], mode);
|
|
#if SENSOR_DEBUG
|
|
DEBUG_MSG_P(PSTR("[SENSOR] GPIO%d interrupt attached to %s\n"), gpio, instance->description().c_str());
|
|
#endif
|
|
}
|
|
|
|
void ECH1560Sensor::_detach(unsigned char gpio) {
|
|
if (!gpioValid(gpio)) return;
|
|
unsigned char index = gpio > 5 ? gpio-6 : gpio;
|
|
if (_ech1560_sensor_instance[index]) {
|
|
detachInterrupt(gpio);
|
|
#if SENSOR_DEBUG
|
|
DEBUG_MSG_P(PSTR("[SENSOR] GPIO%d interrupt detached from %s\n"), gpio, _ech1560_sensor_instance[index]->description().c_str());
|
|
#endif
|
|
_ech1560_sensor_instance[index] = NULL;
|
|
}
|
|
}
|
|
|
|
#endif // SENSOR_SUPPORT && ECH1560_SUPPORT
|