Added Fast PS

When enabled:
When tuning to a new station PS is shown immediately. After two complete PS cycles normal PS detection is activated. This can cause incompete or faulty PS direct after tuning, which will recover.

Disabled:
After two complete PS cycles the PS is shown. This can take some longer time to show PS but will prevent errors as much as possible.

In previous builds fast PS was already enabled, but can now be disabled if wanted.

Also a small fix: when RDS is lost and level drops below low level threshold, the textcolor was not changed.

TEF6686_ESP32.ino

@@ -56,7 +56,6 @@ bool beepresetstop;
 bool BWreset;
 bool change2;
 bool compressedold;
-bool clearrds;
 bool direction;
 bool dropout;
 bool dynamicPTYold;
@@ -424,6 +423,7 @@ void setup() {
   BWsetFM = EEPROM.readByte(EE_BYTE_BWSET_FM);
   BWsetAM = EEPROM.readByte(EE_BYTE_BWSET_AM);
   nowToggleSWMIBand = EEPROM.readByte(EE_BYTE_BANDAUTOSW);
+  radio.rds.fastps = EEPROM.readByte(EE_BYTE_FASTPS);
 
   LWLowEdgeSet = FREQ_LW_LOW_EDGE_MIN;
   LWHighEdgeSet = FREQ_LW_HIGH_EDGE_MAX;
@@ -811,7 +811,7 @@ void loop() {
             radio.getStatusAM(SStatus, USN, WAM, OStatus, BW, MStatus, CN);
           }
         }
-        if (screenmute) readRds();
+        if (screenmute || radio.rds.correctPI != 0) readRds();
         if (!menu) {
           doSquelch();
           GetData();
@@ -1844,6 +1844,7 @@ void ModeButtonPress() {
         EEPROM.writeByte(EE_BYTE_SORTAF, radio.rds.sortaf);
         EEPROM.writeByte(EE_BYTE_STATIONLISTID, stationlistid);
         EEPROM.writeByte(EE_BYTE_FM_DEEMPHASIS, fmdeemphasis);
+        EEPROM.writeByte(EE_BYTE_FASTPS, radio.rds.fastps);
         EEPROM.commit();
         Serial.end();
         if (wifi) remoteip = IPAddress (WiFi.localIP()[0], WiFi.localIP()[1], WiFi.localIP()[2], subnetclient);
@@ -2263,7 +2264,6 @@ void ShowFreq(int mode) {
   afstringold = "";
   rds_clockold = "";
   rdsreset = true;
-  clearrds = true;
   licold = 254;
   ECCold = 253;
 
@@ -3289,6 +3289,7 @@ void DefaultSettings(byte userhardwaremodel) {
   EEPROM.writeByte(EE_BYTE_BWSET_FM, 0);
   EEPROM.writeByte(EE_BYTE_BWSET_AM, 2);
   EEPROM.writeByte(EE_BYTE_BANDAUTOSW, 0);
+  EEPROM.writeByte(EE_BYTE_FASTPS, 1);
   EEPROM.commit();
 }