mirror of
https://github.com/1technophile/OpenMQTTGateway.git
synced 2026-02-20 00:32:04 +01:00
32174e37a5
By building only the log level required into LOG_LEVEL Co-authored-by: Florian <1technophile@users.noreply.github.com>
119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
/*
|
|
Theengs OpenMQTTGateway - We Unite Sensors in One Open-Source Interface
|
|
|
|
Act as a gateway between your 433mhz, infrared IR, BLE, LoRa signal and one interface like an MQTT broker
|
|
Send and receiving command by MQTT
|
|
|
|
This is the Light Meter Addon:
|
|
- Measures ambient Light Intensity in Lux (lx), Foot Candela (ftcd) and Watt/m^2 (wattsm2)
|
|
- Required Hardware Module: BH1750
|
|
|
|
Connection Schemata:
|
|
--------------------
|
|
|
|
BH1750 ------> ESP8266
|
|
==============================================
|
|
Vcc ---------> Vu (5V)
|
|
GND ---------> GND
|
|
SCL ---------> D1
|
|
SDA ---------> D2
|
|
ADD ---------> N/C (Not Connected)
|
|
|
|
Copyright: (c) Hans-Juergen Dinges
|
|
|
|
This file is part of OpenMQTTGateway.
|
|
|
|
OpenMQTTGateway is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
OpenMQTTGateway is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include "User_config.h"
|
|
|
|
#ifdef ZsensorBH1750
|
|
# include "TheengsCommon.h"
|
|
# include "Wire.h" // Library for communication with I2C / TWI devices
|
|
# include "config_BH1750.h"
|
|
# include "math.h" // Library for trig and exponential functions
|
|
|
|
//Time used to wait for an interval before resending measured values
|
|
static unsigned long timebh1750 = 0;
|
|
static int BH1750_i2c_addr = BH1750_I2C_ADDR;
|
|
|
|
void setupZsensorBH1750() {
|
|
THEENGS_LOG_NOTICE(F("Setup BH1750 on adress: %H" CR), BH1750_i2c_addr);
|
|
Wire.begin();
|
|
Wire.beginTransmission(BH1750_i2c_addr);
|
|
Wire.write(0x10); // Set resolution to 1 Lux
|
|
Wire.endTransmission();
|
|
delay(300);
|
|
}
|
|
|
|
void MeasureLightIntensity() {
|
|
if (millis() > (timebh1750 + TimeBetweenReadingBH1750)) { //retrieving value of Lux, FtCd and Wattsm2 from BH1750
|
|
THEENGS_LOG_TRACE(F("Creating BH1750 buffer" CR));
|
|
StaticJsonDocument<JSON_MSG_BUFFER> BH1750dataBuffer;
|
|
JsonObject BH1750data = BH1750dataBuffer.to<JsonObject>();
|
|
|
|
timebh1750 = millis();
|
|
unsigned int i = 0;
|
|
static float persistedll;
|
|
static float persistedlf;
|
|
static float persistedlw;
|
|
unsigned int Lux;
|
|
float ftcd;
|
|
float Wattsm2;
|
|
|
|
// Check if reads failed and exit early (to try again).
|
|
Wire.requestFrom(BH1750_i2c_addr, 2);
|
|
if (Wire.available() != 2) {
|
|
THEENGS_LOG_ERROR(F("Failed to read from LightSensor BH1750!" CR));
|
|
} else {
|
|
i = Wire.read();
|
|
i <<= 8;
|
|
i |= Wire.read();
|
|
|
|
// Calculate the Values
|
|
Lux = i / 1.2; // Convert to Lux
|
|
ftcd = Lux / 10.764;
|
|
Wattsm2 = Lux / 683.0;
|
|
|
|
// Generate Lux
|
|
if (Lux != persistedll || bh1750_always) {
|
|
BH1750data["lux"] = (unsigned int)Lux;
|
|
} else {
|
|
THEENGS_LOG_TRACE(F("Same lux don't send it" CR));
|
|
}
|
|
|
|
// Generate FtCd
|
|
if (ftcd != persistedlf || bh1750_always) {
|
|
BH1750data["ftcd"] = (unsigned int)ftcd;
|
|
} else {
|
|
THEENGS_LOG_TRACE(F("Same ftcd don't send it" CR));
|
|
}
|
|
|
|
// Generate Watts/m2
|
|
if (Wattsm2 != persistedlw || bh1750_always) {
|
|
BH1750data["wattsm2"] = (unsigned int)Wattsm2;
|
|
} else {
|
|
THEENGS_LOG_TRACE(F("Same wattsm2 don't send it" CR));
|
|
}
|
|
BH1750data["origin"] = subjectBH1750toMQTT;
|
|
enqueueJsonObject(BH1750data);
|
|
}
|
|
persistedll = Lux;
|
|
persistedlf = ftcd;
|
|
persistedlw = Wattsm2;
|
|
}
|
|
}
|
|
|
|
#endif
|