parent
b88fa10d53
commit
ea0f2183d2
@ -0,0 +1,65 @@
|
||||
//Connect SCL to D1, SDA to D2, GND and 3v3
|
||||
#include "sensor_bh1750.h"
|
||||
|
||||
|
||||
|
||||
Sensor_BH1750::Sensor_BH1750()
|
||||
{
|
||||
BH1750 bh1750(0x23); //0x23 if addr connected to ground (=pin open), 0x5c if addr pulled high
|
||||
}
|
||||
|
||||
void Sensor_BH1750::init() //Things to be done during setup()
|
||||
{
|
||||
Serial.println("initializing bh1750");
|
||||
Wire.begin();
|
||||
if (bh1750->begin(BH1750::CONTINUOUS_HIGH_RES_MODE)) {
|
||||
Serial.println(F("BH1750 Advanced begin"));
|
||||
init_ok=true;
|
||||
} else {
|
||||
Serial.println(F("Error initialising BH1750"));
|
||||
}
|
||||
bh1750->readLightLevel(); //make first reading, could be 0
|
||||
}
|
||||
|
||||
//Also called during setup()
|
||||
void Sensor_BH1750::setSettings(float minchange, unsigned long senddelaymax, unsigned long readdelay)
|
||||
{
|
||||
data.minchange=minchange;
|
||||
data.senddelaymax=senddelaymax;
|
||||
data.readdelay=readdelay;
|
||||
}
|
||||
|
||||
|
||||
//Called during setup
|
||||
void Sensor_BH1750::advertise(HomieNode& p_sensorNode)
|
||||
{
|
||||
sensorNode = &p_sensorNode;
|
||||
sensorNode->advertise("light");
|
||||
}
|
||||
|
||||
void Sensor_BH1750::sensorloop()
|
||||
{
|
||||
if (init_ok) {
|
||||
sensordata &d=data;
|
||||
|
||||
bool _changed=false;
|
||||
if (millis() >= (d.lastreadtime+d.readdelay)) {
|
||||
d.value = bh1750->readLightLevel(); // [lux]
|
||||
if (fabs(d.lastsentvalue-d.value)>=d.minchange){
|
||||
_changed=true;
|
||||
}
|
||||
d.lastreadtime=millis();
|
||||
}
|
||||
|
||||
if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
|
||||
Serial.print("Sending BH1750. reason=");
|
||||
if (_changed) Serial.println("change"); else Serial.println("time");
|
||||
|
||||
Homie.getLogger() << "light " << ": " << d.value << endl;
|
||||
sensorNode->setProperty("light").send(String(d.value));
|
||||
d.lastsentvalue=d.value;
|
||||
|
||||
d.lastsent=millis();
|
||||
}
|
||||
}
|
||||
}
|
@ -0,0 +1,34 @@
|
||||
#ifndef SENSOR_BH1750_H
|
||||
#define SENSOR_BH1750_H
|
||||
|
||||
#include "sensordata.h"
|
||||
#include <Homie.h>
|
||||
|
||||
|
||||
#include <BH1750.h>
|
||||
#include <Wire.h>
|
||||
|
||||
|
||||
class Sensor_BH1750
|
||||
{
|
||||
|
||||
private:
|
||||
BH1750 *bh1750;
|
||||
HomieNode *sensorNode; //reference to HomieNode
|
||||
|
||||
struct sensordata data; //struct values are changed in setup()
|
||||
|
||||
bool init_ok;
|
||||
|
||||
public:
|
||||
Sensor_BH1750();
|
||||
|
||||
void init();
|
||||
void setSettings(float minchange, unsigned long senddelaymax, unsigned long readdelay);
|
||||
void advertise(HomieNode& p_sensorNode);
|
||||
void sensorloop();
|
||||
|
||||
};
|
||||
|
||||
#endif
|
||||
|
Loading…
Reference in new issue