#include "I2Cdev.h"
#include "IAQ2000.h"
//KNX
#include <KnxTpUart.h>
#define KNX_PHYSICAL_ADRESS "1.1.2"
#define KNX_WRITE_GROUPADRESS_STATUS "7/0/200"
#define KNX_WRITE_GROUPADRESS_CO2 "7/0/201"
#define KNX_WRITE_GROUPADRESS_TVOC "7/0/202"
#define KNX_MEASSURE_INTERVAL_MS 10000 // Messintervall alle 30 sekunden
#define KNX_SEND_INTERVAL_MS_STATUS 10000 // senden des Status mindestens alle 30 minuten
#define KNX_SEND_INTERVAL_MS_CO2 10000 // senden des CO2 Werts mindestens alle 30 minuten
#define KNX_SEND_INTERVAL_MS_TVOC 10000 // senden des VOC Werts mindestens alle 30 minuten
#define watchdog_time 3600000 // Watchdog = 1 Stunde
const int ledpin = 13;
//Initialize KNX
KnxTpUart knx(&Serial, KNX_PHYSICAL_ADRESS);
// class default I2C address is 0x5A
// specific I2C addresses may be passed as a parameter here
// but this device only supports one I2C address (0x5A)
IAQ2000 iaq;
uint16_t airQuality;
uint8_t iAQstatus;
uint16_t airTvoc;
unsigned long startTime;
unsigned long watchdog;
unsigned long sendTimeStatus;
unsigned long sendTimeCO2;
unsigned long sendTimeVOC;
uint16_t oldairQuality;
uint8_t oldiAQstatus = 255;
uint16_t oldairTvoc;
bool result;
void setup() {
// join I2C bus (I2Cdev library doesn't do this automatically)
Wire.begin();
//initialize connection to KNX BCU
Serial.begin(19200);
while (!Serial) {
; // wait for serial port to connect
}
UCSR0C = UCSR0C | B00100000;
// Reset UART
knx.uartReset();
startTime = millis();
watchdog = millis();
// initialize device
delay(1000);
iaq.initialize();
iaq.testConnection() ? result = knx.groupWrite1ByteInt(KNX_WRITE_GROUPADRESS_STATUS, 2) : result = knx.groupWrite1ByteInt(KNX_WRITE_GROUPADRESS_STATUS, 3);
delay(1000);
// VOC Status
// 0 = OK
// 1 = BUSY
// 2 = VOC Verbunden (*)
// 3 = VOC nicht verbunden (*)
// 16 = WARMUP
// 127 = Neustart / Reset (*)
// 128 = ERROR
// (*) = Status 2, 3 und 127 kommen vom Sketch
ADCSRA = ADCSRA & B01111111; // Disable ADC, ADEN bit7 to 0
ACSR = B10000000; // Disable analog comparator, ACD bit7 to 1
DIDR0 = DIDR0 | B00111111; // Disable digitale inputbuffer, set analoge input pins 0-5 to 1
// Lese-Addressen registrieren
// knx.addListenGroupAddress(KNX_WRITE_GROUPADRESS_STATUS);
// knx.addListenGroupAddress(KNX_WRITE_GROUPADRESS_CO2);
// knx.addListenGroupAddress(KNX_WRITE_GROUPADRESS_TVOC);
}
void loop() {
// Wenn unterhalb des messintervalls: nichts tun
if (millis() - startTime < KNX_MEASSURE_INTERVAL_MS) {
delay(1);
return;
}
startTime = millis();
digitalWrite(ledpin, HIGH); // Set LED State to visualize progess
delay(1000);
digitalWrite(ledpin, LOW);
// Wenn überhalb des sendeintrvalls
if (millis() - sendTimeStatus > KNX_SEND_INTERVAL_MS_STATUS) {
oldiAQstatus = 255; // undefinierter wert - damit beim nächsten befehl gesendet wird
}
// Wenn überhalb des sendeintrvalls
if (millis() - sendTimeCO2 > KNX_SEND_INTERVAL_MS_CO2) {
oldairQuality = 10; // undefinierter wert - damit beim nächsten befehl gesendet wird
}
// Wenn überhalb des sendeintrvalls
if (millis() - sendTimeVOC > KNX_SEND_INTERVAL_MS_TVOC) {
oldairTvoc = 10; // undefinierter wert - damit beim nächsten befehl gesendet wird
}
// Wenn über Watchdog-time: Fehler auf BUS senden, reboot
if (millis() - watchdog > watchdog_time) {
result = knx.groupWrite1ByteInt(KNX_WRITE_GROUPADRESS_STATUS, 127);
delay(1000);
asm volatile (" jmp 0");
return;
}
// read sensor status
iAQstatus = iaq.getIaqstatus();
if (iAQstatus != oldiAQstatus) {
oldiAQstatus = iAQstatus;
result = knx.groupWrite1ByteInt(KNX_WRITE_GROUPADRESS_STATUS, iAQstatus);
sendTimeStatus = millis(); // define last Status send time
watchdog = millis(); // set Watchdog
}
delay(100);
// read seansor TVoc
airTvoc = iaq.getIaqtvoc();
if (airTvoc >= (oldairTvoc + 10) || airTvoc <= (oldairTvoc - 10)) {
oldairTvoc = airTvoc;
result = knx.groupWrite2ByteInt(KNX_WRITE_GROUPADRESS_TVOC, airTvoc);
sendTimeVOC = millis(); // define last VOC send time
watchdog = millis(); // set Watchdog
}
delay(100);
// read seansor CO2
airQuality = iaq.getIaqpred();
if (airQuality >= (oldairQuality + 10) || airQuality <= (oldairQuality - 10)) {
oldairQuality = airQuality;
result = knx.groupWrite2ByteInt(KNX_WRITE_GROUPADRESS_CO2, airQuality);
sendTimeCO2 = millis(); // define last CO2 send time
watchdog = millis(); // set Watchdog
}
delay(100);
}
void reboot() {
}
result =
serialEvent()
delay()
Kommentar