Added 3 measurements

nanovna.h

@@ -959,7 +959,7 @@ uint32_t calc_min_sweep_time_us(void);
 pureRSSI_t perform(bool b, int i, uint32_t f, int e);
 
 enum {
-  M_OFF, M_IMD, M_OIP3, M_PHASE_NOISE, M_STOP_BAND, M_PASS_BAND, M_LINEARITY
+  M_OFF, M_IMD, M_OIP3, M_PHASE_NOISE, M_STOP_BAND, M_PASS_BAND, M_LINEARITY, M_AM, M_FM
 };
 
 enum {

sa_core.c

@@ -17,7 +17,7 @@
  */
 
 #ifdef __SI4432__
-#include "SI4432.h"		// comment out for simulation
+#include "si4432.h"		// comment out for simulation
 #endif
 #include "stdlib.h"
 
@@ -2317,6 +2317,20 @@ sweep_again:                                // stay in sweep loop when output mo
         t ++;
       if (t < setting._sweep_points - 1 )
         markers[2].index = t;
+    } else if (setting.measurement == M_AM) {      // ----------------AM measurement
+      if (S_IS_AUTO(setting.agc )) {
+        if (actual_t[max_index[0]]  - get_attenuation() > -20 ) {
+          setting.agc = S_AUTO_OFF;
+          setting.lna = S_AUTO_OFF;
+        } else if (actual_t[max_index[0]]  - get_attenuation() < -45 ) {
+          setting.agc = S_AUTO_ON;
+          setting.lna = S_AUTO_ON;
+        } else {
+          setting.agc = S_AUTO_OFF;
+          setting.lna = S_AUTO_ON;
+        }
+        set_AGC_LNA();
+      }
     }
 
 #endif

ui_sa.c

@@ -834,6 +834,35 @@ static UI_FUNCTION_ADV_CALLBACK(menu_measure_acb)
       set_measurement(M_LINEARITY);
       ui_mode_normal();
       break;
+    case M_AM:                                     // OIP3
+      reset_settings(setting.mode);
+      for (int i = 0; i< 3; i++) {
+        markers[i].enabled = M_ENABLED;
+        markers[i].mtype = M_DELTA | M_TRACKING;
+      }
+      markers[0].mtype = M_REFERENCE | M_TRACKING;
+      kp_help_text = "Frequency of signal";
+      ui_mode_keypad(KM_CENTER);
+      ui_process_keypad();
+      set_sweep_frequency(ST_SPAN, 100000);     // 100kHz
+      set_measurement(M_AM);
+      break;
+    case M_FM:                                     // OIP3
+      reset_settings(setting.mode);
+      for (int i = 0; i< 3; i++) {
+        markers[i].enabled = M_ENABLED;
+        markers[i].mtype = M_DELTA | M_TRACKING;
+      }
+      markers[0].mtype = M_REFERENCE | M_TRACKING;
+      kp_help_text = "Frequency of signal";
+      ui_mode_keypad(KM_CENTER);
+      ui_process_keypad();
+      kp_help_text = "Frequency deviation";
+      ui_mode_keypad(KM_SPAN);
+      ui_process_keypad();
+      set_sweep_frequency(ST_SPAN, uistat.value*30);
+      set_measurement(M_FM);
+      break;
   }
 #endif
 //  selection = -1;
@@ -1572,13 +1601,15 @@ static const menuitem_t menu_settings[] =
 };
 
 static const menuitem_t menu_measure[] = {
-  { MT_ADV_CALLBACK,            M_OFF,        "OFF",              menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_OFF,        "OFF",            menu_measure_acb},
-  { MT_ADV_CALLBACK,            M_IMD,        "HARMONIC",         menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_IMD,        "HARMONIC",       menu_measure_acb},
-  { MT_ADV_CALLBACK,            M_OIP3,       "OIP3",             menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_OIP3,       "OIP3",           menu_measure_acb},
-  { MT_ADV_CALLBACK,            M_PHASE_NOISE,"PHASE\nNOISE",     menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_PHASE_NOISE,"PHASE\nNOISE",   menu_measure_acb},
-//  { MT_ADV_CALLBACK,            M_STOP_BAND,  "STOP\nBAND",     menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_STOP_BAND,  "SNR",            menu_measure_acb},
-//  { MT_ADV_CALLBACK,            M_PASS_BAND,  "PASS\nBAND",     menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_PASS_BAND,  "-6dB\nWIDTH",     menu_measure_acb},
 //  { MT_ADV_CALLBACK | MT_LOW,   M_LINEARITY,  "LINEAR",         menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_AM,           "AM",           menu_measure_acb},
+  { MT_ADV_CALLBACK,            M_FM,           "FM",           menu_measure_acb},
   { MT_CANCEL, 0,               S_LARROW" BACK", NULL },
   { MT_NONE,   0, NULL, NULL } // sentinel
 };