Cache attenuation data, not rewrite if some

Not redraw status on trigger

sa_cmd.c

@@ -270,7 +270,7 @@ VNA_SHELL_FUNCTION(cmd_v)
         shell_printf("%d\r\n", SI4432_Sel);
         return;
     }
-    VFO = my_atoi(argv[0]);
+    VFO = my_atoi(argv[0]) > 0 ? 1 : 0;
     shell_printf("VFO %d\r\n", VFO);
 }
 

sa_core.c

@@ -854,8 +854,8 @@ uint32_t peakFreq;
 int peakIndex;
 float temppeakLevel;
 int temppeakIndex;
-static unsigned long old_freq[4] = { 0, 0, 0, 0 };
+static unsigned long old_freq[MAX_SI4432] = { 0, 0, 0,;
-static unsigned long real_old_freq[4] = { 0, 0, 0, 0 };
+static unsigned long real_old_freq[MAX_SI4432] = { 0, 0, 0};
 // volatile int t;
 
 //static uint32_t extra_vbw_step_time = 0;
@@ -1782,7 +1782,7 @@ sweep_again:                                // stay in sweep loop when output mo
       if (setting.trigger == T_SINGLE)
         pause_sweep();                    // Stop scanning after completing this sweep if above trigger
     }
-    scandirty = true;                // To show trigger happened
+//    scandirty = true;                // To show trigger happened
   }
 
   // ---------------------- process measured actual sweep time -----------------
@@ -1844,8 +1844,7 @@ sweep_again:                                // stay in sweep loop when output mo
 
   if (!in_selftest && setting.mode == M_LOW && setting.auto_attenuation && max_index[0] > 0) {  // calculate and apply auto attenuate
     setting.atten_step = false;     // No step attenuate in low mode auto attenuate
-    float old_attenuate = get_attenuation();
+    float actual_max_level = actual_t[max_index[0]] - get_attenuation();
-    float actual_max_level = actual_t[max_index[0]] - old_attenuate;
     if (actual_max_level < - 31 && setting.attenuate >= 10) {
       setting.attenuate -= 10.0;
     } else if (actual_max_level < - 26 && setting.attenuate >= 5) {
@@ -1853,9 +1852,9 @@ sweep_again:                                // stay in sweep loop when output mo
     } else if (actual_max_level > - 19 && setting.attenuate <= 20) {
       setting.attenuate += 10.0;
     }
-    if (old_attenuate != get_attenuation()) {
+    // Try update settings
+    if (PE4302_Write_Byte((int) get_attenuation() * 2)) {
       redraw_request |= REDRAW_CAL_STATUS;
-      PE4302_Write_Byte((int)(setting.attenuate * 2));
       SI4432_Sel = 0;
       if (setting.atten_step) {
         set_switch_transmit();          // This should never happen

si4432.c

@@ -124,7 +124,8 @@ static void shiftOutBuf(uint8_t *buf, uint16_t size) {
   }while(--size);
 }
 #endif
-const int SI_nSEL[3] = { GPIO_RX_SEL, GPIO_LO_SEL, 0}; // #3 is dummy!!!!!!
+
+const uint16_t SI_nSEL[MAX_SI4432] = { GPIO_RX_SEL, GPIO_LO_SEL, 0}; // #3 is dummy!!!!!!
 
 volatile int SI4432_Sel = 0;         // currently selected SI4432
 // volatile int SI4432_guard = 0;
@@ -398,7 +399,7 @@ int SI4432_is_fast_mode(void)
 void SI4432_Fill(int s, int start)
 {
   SI4432_Sel = s;
-  int sel = SI_nSEL[SI4432_Sel];
+  uint16_t sel = SI_nSEL[SI4432_Sel];
 #if 0
   uint32_t t = calc_min_sweep_time_us(); // Time to delay in uS for all sweep
   if (t < setting.sweep_time_us){
@@ -657,8 +658,12 @@ void PE4302_shiftOut(uint8_t val)
      }
 }
 #endif
-void PE4302_Write_Byte(unsigned char DATA )
+
+static unsigned char old_attenuation[MAX_SI4432] = {0, 0, 0};
+bool PE4302_Write_Byte(unsigned char DATA )
 {
+  if (old_attenuation[SI4432_Sel] == DATA)
+    return false;
 //  chThdSleepMicroseconds(PE4302_DELAY);
   SPI2_CLK_LOW;
 //  chThdSleepMicroseconds(PE4302_DELAY);
@@ -670,7 +675,7 @@ void PE4302_Write_Byte(unsigned char DATA )
 //  chThdSleepMicroseconds(PE4302_DELAY);
   CS_PE_LOW;
 //  chThdSleepMicroseconds(PE4302_DELAY);
-
+  return true;
 }
 
 #endif

si4432.h

@@ -21,6 +21,12 @@
 #ifndef __SI4432_H__
 
 #define __SI4432_H__
+//
+#define MAX_SI4432                         3
+
+#define SI4432_RX                          0
+#define SI4432_LO_OUT                      1
+#define SI4432_DUMMY                       2
 
 #define SI4432_DEV_TYPE                    0x00
 #define SI4432_DEV_VERSION                 0x01
@@ -112,7 +118,7 @@ void SI4432_Set_Frequency ( uint32_t Freq );
 void SI4432_Transmit(int d);
 void SI4432_Receive(void);
 uint16_t SI4432_SET_RBW(uint16_t WISH);
-void PE4302_Write_Byte(unsigned char DATA );
+bool PE4302_Write_Byte(unsigned char DATA );
 void PE4302_init(void);
 
 #ifdef __ULTRA_SA__