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mhsw-espurna/code/espurna/sensors/GeigerSensor.h

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// -----------------------------------------------------------------------------
// Geiger Sensor based on Event Counter Sensor
// Copyright (C) 2018 by Sven Kopetzki <skopetzki at web dot de>
// Documentation: https://github.com/Trickx/espurna/wiki/Geiger-counter
// -----------------------------------------------------------------------------
#if SENSOR_SUPPORT && GEIGER_SUPPORT
#pragma once
#include <Arduino.h>
#include "../debug.h"
#include "BaseSensor.h"
class GeigerSensor : public BaseSensor {
public:
// ---------------------------------------------------------------------
// Public
// ---------------------------------------------------------------------
GeigerSensor() : BaseSensor() {
_count = 2;
_sensor_id = SENSOR_GEIGER_ID;
}
~GeigerSensor() {
_enableInterrupts(false);
}
// ---------------------------------------------------------------------
void setGPIO(unsigned char gpio) {
_gpio = gpio;
}
void setMode(unsigned char mode) {
_mode = mode;
}
void setInterruptMode(unsigned char mode) {
_interrupt_mode = mode;
}
void setDebounceTime(unsigned long debounce) {
_debounce = debounce;
}
void setCPM2SievertFactor(unsigned int cpm2sievert) {
_cpm2sievert = cpm2sievert;
}
// ---------------------------------------------------------------------
unsigned char getGPIO() {
return _gpio;
}
unsigned char getMode() {
return _mode;
}
unsigned char getInterruptMode() {
return _interrupt_mode;
}
unsigned long getDebounceTime() {
return _debounce;
}
unsigned long getCPM2SievertFactor() {
return _cpm2sievert;
}
// ---------------------------------------------------------------------
// Sensors API
// ---------------------------------------------------------------------
// Initialization method, must be idempotent
// Defined outside the class body
void begin() {
pinMode(_gpio, _mode);
_enableInterrupts(true);
_ready = true;
}
// Descriptive name of the sensor
String description() {
char buffer[20];
snprintf(buffer, sizeof(buffer), "µSv/h @ GPIO%d", _gpio);
return String(buffer);
}
// Descriptive name of the slot # index
String slot(unsigned char index) {
char buffer[30];
unsigned char i=0;
#if GEIGER_REPORT_CPM
if (index == i++) {
snprintf(buffer, sizeof(buffer), "Counts per Minute @ GPIO%d", _gpio);
return String(buffer);
}
#endif
#if GEIGER_REPORT_SIEVERTS
if (index == i++) {
snprintf(buffer, sizeof(buffer), "CPM / %d = µSv/h", _cpm2sievert);
return String(buffer);
}
#endif
snprintf(buffer, sizeof(buffer), "Events @ GPIO%d", _gpio);
return String(buffer);
};
// Address of the sensor (it could be the GPIO or I2C address)
String address(unsigned char index) {
return String(_gpio);
}
// Type for slot # index
unsigned char type(unsigned char index) {
unsigned char i=0;
#if GEIGER_REPORT_CPM
if (index == i++) return MAGNITUDE_GEIGER_CPM;
#endif
#if GEIGER_REPORT_SIEVERTS
if (index == i++) return MAGNITUDE_GEIGER_SIEVERT;
#endif
return MAGNITUDE_NONE;
}
// Current value for slot # index
double value(unsigned char index) {
unsigned char i=0;
#if GEIGER_REPORT_CPM
if (index == i++) {
unsigned long _period_begin = _lastreport_cpm;
_lastreport_cpm = millis();
double value = _events * 60000;
value = value / (_lastreport_cpm-_period_begin);
#if SENSOR_DEBUG
char buffer[32] = {0};
dtostrf(value, 1, 4, buffer);
DEBUG_MSG_P(PSTR("[GEIGER] Ticks: %u | Interval: %u | CPM: %s\n"), _ticks, (_lastreport_cpm - _period_begin), buffer);
#endif
_events = 0;
return value;
}
#endif
#if GEIGER_REPORT_SIEVERTS
if (index == i++) {
unsigned long _period_begin = _lastreport_sv;
_lastreport_sv = millis();
double value = _ticks * 60000 / _cpm2sievert;
value = value / (_lastreport_sv-_period_begin);
#if SENSOR_DEBUG
char buffer[32] = {0};
dtostrf(value, 1, 4, buffer);
DEBUG_MSG_P(PSTR("[GEIGER] Ticks: %u | Interval: %u | CPM: %s\n"), _ticks, (_lastreport_cpm - _period_begin), buffer);
#endif
_ticks = 0;
return value;
}
#endif
return 0;
}
// Handle interrupt calls
void handleInterrupt(unsigned char gpio) {
UNUSED(gpio);
static unsigned long last = 0;
if (millis() - last > _debounce) {
_events = _events + 1;
_ticks = _ticks + 1;
last = millis();
}
}
protected:
// ---------------------------------------------------------------------
// Interrupt management
// ---------------------------------------------------------------------
void _attach(GeigerSensor * instance, unsigned char gpio, unsigned char mode);
void _detach(unsigned char gpio);
void _enableInterrupts(bool value) {
static unsigned char _interrupt_gpio = GPIO_NONE;
if (value) {
if (_interrupt_gpio != GPIO_NONE) _detach(_interrupt_gpio);
_attach(this, _gpio, _interrupt_mode);
_interrupt_gpio = _gpio;
} else if (_interrupt_gpio != GPIO_NONE) {
_detach(_interrupt_gpio);
_interrupt_gpio = GPIO_NONE;
}
}
// ---------------------------------------------------------------------
// Protected
// ---------------------------------------------------------------------
volatile unsigned long _events = 0;
volatile unsigned long _ticks = 0;
unsigned long _debounce = GEIGER_DEBOUNCE;
unsigned int _cpm2sievert = GEIGER_CPM2SIEVERT;
unsigned char _gpio;
unsigned char _mode;
unsigned char _interrupt_mode;
// Added for µSievert calculations
unsigned long _lastreport_cpm = millis();
unsigned long _lastreport_sv = _lastreport_cpm;
};
// -----------------------------------------------------------------------------
// Interrupt helpers
// -----------------------------------------------------------------------------
GeigerSensor * _geiger_sensor_instance[10] = {NULL};
void ICACHE_RAM_ATTR _geiger_sensor_isr(unsigned char gpio) {
unsigned char index = gpio > 5 ? gpio-6 : gpio;
if (_geiger_sensor_instance[index]) {
_geiger_sensor_instance[index]->handleInterrupt(gpio);
}
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_0() {
_geiger_sensor_isr(0);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_1() {
_geiger_sensor_isr(1);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_2() {
_geiger_sensor_isr(2);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_3() {
_geiger_sensor_isr(3);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_4() {
_geiger_sensor_isr(4);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_5() {
_geiger_sensor_isr(5);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_12() {
_geiger_sensor_isr(12);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_13() {
_geiger_sensor_isr(13);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_14() {
_geiger_sensor_isr(14);
}
void ICACHE_RAM_ATTR _geiger_sensor_isr_15() {
_geiger_sensor_isr(15);
}
static void (*_geiger_sensor_isr_list[10])() = {
_geiger_sensor_isr_0, _geiger_sensor_isr_1, _geiger_sensor_isr_2,
_geiger_sensor_isr_3, _geiger_sensor_isr_4, _geiger_sensor_isr_5,
_geiger_sensor_isr_12, _geiger_sensor_isr_13, _geiger_sensor_isr_14,
_geiger_sensor_isr_15
};
void GeigerSensor::_attach(GeigerSensor * instance, unsigned char gpio, unsigned char mode) {
if (!gpioValid(gpio)) return;
_detach(gpio);
unsigned char index = gpio > 5 ? gpio-6 : gpio;
_geiger_sensor_instance[index] = instance;
attachInterrupt(gpio, _geiger_sensor_isr_list[index], mode);
#if SENSOR_DEBUG
DEBUG_MSG_P(PSTR("[GEIGER] GPIO%d interrupt attached to %s\n"), gpio, instance->description().c_str());
#endif
}
void GeigerSensor::_detach(unsigned char gpio) {
if (!gpioValid(gpio)) return;
unsigned char index = gpio > 5 ? gpio-6 : gpio;
if (_geiger_sensor_instance[index]) {
detachInterrupt(gpio);
#if SENSOR_DEBUG
DEBUG_MSG_P(PSTR("[GEIGER] GPIO%d interrupt detached from %s\n"), gpio, _geiger_sensor_instance[index]->description().c_str());
#endif
_geiger_sensor_instance[index] = NULL;
}
}
#endif // SENSOR_SUPPORT && GEIGER_SUPPORT