refresh time for all devices + schema fixes (#305)

* refresh for all :-)
remove dups

* - integrate refresh leds for all devices
- fix schemas for led devices

* add minimum for rewrite time

* rewriteTime: add missing info in config examples

libsrc/leddevice/LedDevice.cpp

@@ -18,6 +18,7 @@ LedDevice::LedDevice()
 	, _ledBuffer(0)
 	, _deviceReady(true)
 	, _refresh_timer()
+	, _refresh_timer_interval(0)
 {
 	LedDevice::getLedDeviceSchemas();
 
@@ -49,6 +50,12 @@ void LedDevice::setActiveDevice(std::string dev)
 	_activeDevice = dev;
 }
 
+bool LedDevice::init(const QJsonObject &deviceConfig)
+{
+	_refresh_timer.setInterval( deviceConfig["rewriteTime"].toInt(_refresh_timer_interval) );
+	return true;
+}
+
 QJsonObject LedDevice::getLedDeviceSchemas()
 {
 	// make sure the resources are loaded (they may be left out after static linking)