Hi @mfalkvidd ! thank you very much for the help,
IAQ is the Index of air quality 0-500 level, its a BOSCH proprietary software that runs on a cortex arm mcu that calculates from all sensor values: temp, hum, press, gases, and some other stuff.
i was trying to figure it out myself! so i did this:
/*
* The MySensors Arduino library handles the wireless radio link and protocol
* between your home built sensors/actuators and HA controller of choice.
* The sensors forms a self healing radio network with optional repeaters. Each
* repeater and gateway builds a routing tables in EEPROM which keeps track of the
* network topology allowing messages to be routed to nodes.
*
* Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
* Copyright (C) 2013-2015 Sensnology AB
* Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
*
* Documentation: http://www.mysensors.org
* Support Forum: http://forum.mysensors.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
*******************************
*
* DESCRIPTION
*
* BME680 GY-MCU680 UART Air Quality Sensor
*
* This sensor measures Temperature (xx.xx cº), Humidity (xx.xx %), Pressure, Gas (ohm), IAQ (0-500)
*
*/
//------------------------------------------------------------------------------
// if you uncomment this, you can get test and debug updates about the sensor' wireless connection by using the serial monitor tool.
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_NRF24 // A 2.4Ghz transmitter and receiver, often used with MySensors.
#define MY_RF24_PA_LEVEL RF24_PA_MIN // This sets a low-power mode for the radio. Useful if you use the verison with the bigger antenna, but don't want to power that from a separate power source. It can also fix problems with fake Chinese versions of the radio.
// #define MY_RADIO_RFM69 // 433Mhz transmitter and reveiver.
// Libraries
#include <MySensors.h>
#include <SoftwareSerial.h>
// Feel free to change this:
unsigned long co2MeasurementInterval = 20000; // Time to wait between reads (in milliseconds).
SoftwareSerial mySerial(4, 5); // RX, TX . You can choose other pins if you prefer.
uint16_t temp1=0;
int16_t temp2=0;
unsigned char Re_buf[30],counter=0;
unsigned char sign=0;
//int led = 13;
// Mysensors settings
#define CHILD_ID_BME680 1 // The sensor' ID on this node.
MyMessage msgBmeTemp(CHILD_ID_BME680, V_TEMP);
MyMessage msgBmeHum(CHILD_ID_BME680, V_HUM);
MyMessage msgBmePress(CHILD_ID_BME680, V_PRESSURE);
MyMessage msgBmeIAQ(CHILD_ID_BME680, V_VAR1);
MyMessage msgBmeGas(CHILD_ID_BME680, V_VAR2);
MyMessage msgBmeIAQA(CHILD_ID_BME680, V_VAR3);
void presentation()
{
// Send the sketch version information to the gateway and Controller
sendSketchInfo("BOSCH Sensortec BME680 Air Quality Sensor", "1.0");
// Register attached sensor(s) to gateway
present(CHILD_ID_BME680, S_CUSTOM);
}
void setup()
{
delay(1000);
Serial.begin(115200);
delay(1000);
mySerial.begin(9600);
delay(1000);
mySerial.listen();
delay(3000);
mySerial.write(0XA5);
mySerial.write(0X55);
mySerial.write(0X3F);
mySerial.write(0X39);
delay(200);
mySerial.write(0XA5);
mySerial.write(0X56);
mySerial.write(0X02);
mySerial.write(0XFD);
delay(500);
}
void loop()
{
float Temperature ,Humidity;
unsigned char i=0,sum=0;
uint32_t Gas;
uint32_t Pressure;
uint16_t IAQ;
int16_t Altitude;
uint8_t IAQ_accuracy;
// You should not change these variables:
static unsigned long previousCo2Millis = 0; // Used to remember the time of the last temperature measurement.
unsigned long currentMillis = millis(); // The time since the sensor started, counted in milliseconds. This script tries to avoid using the Sleep function, so that it could at the same time be a MySensors repeater.
if (currentMillis - previousCo2Millis >= co2MeasurementInterval) { // this only gets triggered when enough time has passed.
while (mySerial.available()) {
Re_buf[counter]=(unsigned char)mySerial.read();
if(counter==0&&Re_buf[0]!=0x5A) return;
if(counter==1&&Re_buf[1]!=0x5A)
{
counter=0;
return;
};
counter++;
if(counter==20)
{
counter=0;
sign=1;
}
}
if(sign)
{
sign=0;
if(Re_buf[0]==0x5A&&Re_buf[1]==0x5A )
{
for(i=0;i<19;i++)
sum+=Re_buf[i];
if(sum==Re_buf[i] )
{
temp2=(Re_buf[4]<<8|Re_buf[5]);
Temperature=(float)temp2/100;
temp1=(Re_buf[6]<<8|Re_buf[7]);
Humidity=(float)temp1/100;
Pressure=((uint32_t)Re_buf[8]<<16)|((uint16_t)Re_buf[9]<<8)|Re_buf[10];
IAQ_accuracy= (Re_buf[11]&0xf0)>>4;
IAQ=((Re_buf[11]&0x0F)<<8)|Re_buf[12];
Gas=((uint32_t)Re_buf[13]<<24)|((uint32_t)Re_buf[14]<<16)|((uint16_t)Re_buf[15]<<8)|Re_buf[16];
Altitude=(Re_buf[17]<<8)|Re_buf[18];
Serial.print("Temperature:");
Serial.print(Temperature);
Serial.print(" ,Humidity:");
Serial.print(Humidity);
Serial.print(" ,Pressure:");
Serial.print(Pressure);
Serial.print(" ,IAQ:");
Serial.print(IAQ);
Serial.print(" ,Gas:");
Serial.print(Gas );
Serial.print(" ,Altitude:");
Serial.print(Altitude);
Serial.print(" ,IAQ_accuracy:");
Serial.println(IAQ_accuracy);
delay(1000);
// return Humidity;
}
}
}
Serial.println("BME680 - Sending data request to sensor.");
previousCo2Millis = currentMillis;
float temp = Temperature;
float hum = Humidity;
uint32_t pressu = Pressure;
uint16_t iaq = IAQ;
uint32_t gas = Gas;
uint8_t iaqaccur = IAQ_accuracy;
Serial.println("Temperature = " + String(temp));
send(msgBmeTemp.set(Temperature, 2));
Serial.println("Humidity = " + String(hum));
send(msgBmeHum.set(Humidity, 2));
Serial.println("Pressure = " + String(pressu));
send(msgBmePress.set(Pressure, 0));
Serial.println("IAQ = " + String(iaq));
send(msgBmeIAQ.set(IAQ, 0));
Serial.println("Gas = " + String(gas));
send(msgBmeGas.set(Gas, 0));
Serial.println("IAQ_accuracy = " + String(iaqaccur));
send(msgBmeIAQA.set(IAQ_accuracy, 0));
Serial.print("BME680 - zzzzZZZZzzzzZZZZzzzz\n");
}
}
but your example seems cleaner than mine, i will try
my example is working almost 100%, but this messages:
MyMessage msgBmeIAQ(CHILD_ID_BME680, V_VAR1);
MyMessage msgBmeGas(CHILD_ID_BME680, V_VAR2);
MyMessage msgBmeIAQA(CHILD_ID_BME680, V_VAR3);
i see that they are sending:
BME680 UART - Sending data request to sensor.
Temperature = 21.33
901008 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:21.33
Humidity = 59.43
901019 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=OK:59.43
Pressure = 98988
901027 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=4,pt=7,l=5,sg=0,ft=0,st=OK:98988
IAQ = 29
901036 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=24,pt=7,l=5,sg=0,ft=0,st=OK:29
Gas = 127960
901045 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=25,pt=7,l=5,sg=0,ft=0,st=OK:127960
IAQ_accuracy = 3
901053 TSF:MSG:SEND,1-1-0-0,s=0,c=1,t=26,pt=7,l=5,sg=0,ft=0,st=OK: 3
BME680 - zzzzZZZZzzzzZZZZzzzz
but they are not showing up on the controller, maybe because its because this type : V_VAR* ?
