Changes for XDRGTK

- Changed bandscanner
- Enabled Advanced RDS viewer

src/TEF6686.cpp

@@ -50,6 +50,25 @@ void TEF6686::TestAFEON() {
   if (!mute) devTEF_Audio_Set_Mute(0);
 }
 
+uint16_t TEF6686::CheckSignal(uint16_t frequency) {
+	uint16_t status;
+	uint16_t rdsStat;
+	uint16_t dummy1;
+	uint16_t dummy2;
+	uint8_t dummy3;
+	int16_t level;
+	uint16_t usn;
+	uint16_t wam;
+	int16_t offset;
+	byte timing = 0;
+	devTEF_Set_Cmd(TEF_FM, Cmd_Tune_To, 7, 3, frequency);
+    while (timing == 0 && !bitRead(timing, 15)) {
+		devTEF_Radio_Get_Quality_Status(&status, &level, &usn, &wam, &offset, &dummy1, &dummy2, &dummy3);
+		timing = lowByte(status);
+	}
+	return level;
+}
+
 uint16_t TEF6686::TestAF() {
   if (af_counter != 0) {
     uint16_t status;

src/TEF6686.h

@@ -175,6 +175,7 @@ class TEF6686 {
     eon_ eon[20];
     rds_ rds;
     logbook_ logbook[22];
+	uint16_t CheckSignal(uint16_t frequency);
     uint16_t TestAF();
     void TestAFEON();
     void readRDS(bool showrdserrors);