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control_demo_mqtt.cpp
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control_demo_mqtt.cpp
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/*
Demo MQTT by listening for humidity and controlling LED
Optional CONTROL_DEMO_MQTT_DEBUG
*/
#include "_settings.h" // Settings for what to include etc
#ifdef CONTROL_DEMO_MQTT_WANT
#include <Arduino.h>
#include "_common.h" // Main include file for Framework
#include "control_demo_mqtt.h"
#include "system_mqtt.h"
namespace cDemoMqtt {
String *inTopic = new String(SYSTEM_DISCOVERY_PROJECT SYSTEM_DISCOVERY_DEVICE SENSOR_SHT85_TOPIC_HUMIDITY); // TODO-29 will come from config
String *outTopic = new String(SYSTEM_DISCOVERY_PROJECT SYSTEM_DISCOVERY_DEVICE ACTUATOR_LEDBUILTIN_TOPIC); // TODO-29 will come from config
bool value = false;
void messageReceived(String &topic, String &payload) {
float humidity = payload.toFloat();
#ifdef CONTROL_DEMO_MQTT_DEBUG
Serial.print("cDemoMqtt received ");
Serial.println(humidity);
#endif
bool newValue = humidity > CONTROL_DEMO_MQTT_HUMIDITY_MAX;
// Only send if its changed.
if (newValue != value) {
// TODO-33 should not send this here (rule against sending with qos>0 withink messagReceived), it should be in a "loop"
xMqtt::messageSend(*outTopic, value, true, 1);
value = newValue;
}
}
void setup() {
xMqtt::subscribe(*inTopic, *messageReceived);
xMqtt::messageSend(*outTopic, value, true, 1); // set initial value
}
} //namespace cDemoMqtt
#endif // CONTROL_DEMO_MQTT_WANT