Thermostat: switch heaters on/off: WIP

soft/thermostat/inc/backgroundloop.h

@@ -11,6 +11,13 @@
 
 #include <QThread>
 
+enum power_states {
+	OFF,
+	ON,
+	AUTO,
+	MAX_POWER_STATES
+};
+
 class BackgroundLoop : public QThread
 {
 	Q_OBJECT
@@ -20,8 +27,14 @@ public:
 	BackgroundLoop();
 	~BackgroundLoop();
 
+public slots:
+	void onNewPowerState(enum power_states state);
+
 private:
 	void run() override;
+	void allHeatersOn(bool on);
+
+	enum power_states m_pwr_state;
 };
 
 #endif // BACKGROUNDLOOP_H

soft/thermostat/inc/mainwindow.h

@@ -14,18 +14,10 @@
 #include <QtWidgets>
 #include <QVector>
 
-#include "mqttclient.h"
 #include "zoneitem.h"
 #include "backgroundloop.h"
 #include "settings.h"
 
-enum power_states {
-	OFF,
-	ON,
-	AUTO,
-	MAX_POWER_STATES
-};
-
 class MainWindow : public QMainWindow
 {
 	Q_OBJECT
@@ -46,6 +38,10 @@ private slots:
 	void hygro_slot(int idx, double val);
 	void availability_slot(int idx, bool ok);
 	void change_state(void);
+
+signals:
+	void new_pwr_state(enum power_states state);
+
 };
 
 #endif // MAINWINDOW_H

soft/thermostat/src/backgroundloop.cpp

@@ -11,6 +11,8 @@
 
 #define LOOP_SLEEP_TIME_S 5
 
+#include "mqttclient.h"
+#include "settings.h"
 #include "backgroundloop.h"
 
 
@@ -20,9 +22,44 @@ BackgroundLoop::BackgroundLoop() {
 BackgroundLoop::~BackgroundLoop() {
 }
 
+void BackgroundLoop::onNewPowerState(enum power_states state)
+{
+	m_pwr_state = state;
+}
+
+void BackgroundLoop::allHeatersOn(bool on) {
+	MQTTClient *mc = MQTTClient::getInstance();
+	Settings *s = Settings::getInstance();
+
+	QString payload = on ? QString("on") : QString("off");
+
+	for (int i = 0; i < s->nbZones(); i++) {
+		const struct Room *r = &(s->m_rooms.at(i));
+		for (int j = 0; j < r->heaters.count(); j++) {
+			const struct Heater *h = &(r->heaters.at(j));
+
+			mc->publish_msg(h->ctrl_topic, payload);
+		}
+	}
+}
+
 void BackgroundLoop::run()
 {
-	while(!isInterruptionRequested()) {
+
+	while (!isInterruptionRequested()) {
+		switch (m_pwr_state) {
+		case ON:
+			allHeatersOn(true);
+			break;
+		case AUTO:
+			/* TODO */
+			break;
+		case OFF:
+			/* fall */
+		default:
+			allHeatersOn(false);
+			break;
+		}
 		this->sleep(LOOP_SLEEP_TIME_S);
 	}
 }

soft/thermostat/src/mainwindow.cpp

@@ -67,6 +67,8 @@ MainWindow::MainWindow(QWidget *parent) :
 	setWindowTitle(tr("Sorico's thermostat"));
 	m_backLoop.start();
 
+	connect(this, SIGNAL(new_pwr_state(enum power_states)),
+		&m_backLoop, SLOT(onNewPowerState(enum power_states)));
 	connect(&m_state_btn, SIGNAL(clicked()), this, SLOT(change_state()));
 }
 
@@ -108,6 +110,7 @@ void MainWindow::change_state(void)
 		break;
 	}
 	update_state_btn(m_pwr_state);
+	emit new_pwr_state(m_pwr_state);
 }
 
 void MainWindow::temperature_slot(int idx, double val)