优化小圆点的显示逻辑

app/main.c

@@ -708,6 +708,7 @@ static void MAIN_Key_UP_DOWN(bool bKeyPressed, bool bKeyHeld, int8_t Direction)
 }
 
 void MAIN_ProcessKeys(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld) {
+    last_rx_vfo = -1;
 #ifdef ENABLE_FMRADIO
     if (gFmRadioMode && Key != KEY_PTT && Key != KEY_EXIT)
     {

misc.c

@@ -19,6 +19,8 @@
 #include "misc.h"
 #include "settings.h"
 
+unsigned int last_rx_vfo = -1;
+
 const uint8_t     fm_radio_countdown_500ms         =  2000 / 500;  // 2 seconds
 const uint16_t    fm_play_countdown_scan_10ms      =   100 / 10;   // 100ms
 const uint16_t    fm_play_countdown_noscan_10ms    =  1200 / 10;   // 1.2 seconds

misc.h

@@ -337,3 +337,4 @@ inline bool SerialConfigInProgress() { return gSerialConfigCountDown_500ms != 0;
 
 
 #endif
+extern unsigned int last_rx_vfo;

ui/main.c

@@ -41,7 +41,6 @@
 #include "ui/ui.h"
 
 center_line_t center_line = CENTER_LINE_NONE;
-unsigned int last_rx_vfo = -1;
 
 const int8_t dBmCorrTable[7] = {
         -15, // band 1