fix ui

Core/App/global.h

@@ -3,6 +3,10 @@
 #include <stdint.h>
 #define G_RF_MODE_FM 0x00
 #define G_RF_MODE_AM 0x01
+#define G_FM_FREQ_MIN 880*2
+#define G_FM_FREQ_MAX 1080*2
+#define G_AM_FREQ_MIN 100
+#define G_AM_FREQ_MAX 33000
 
 typedef struct GlobalData {
     uint16_t freq; // FM x50kHz AM x1kHz