From 0d3662141100992b1afefc9d2448207c26d953ba Mon Sep 17 00:00:00 2001
From: TT <edy555@gmail.com>
Date: Sat, 28 Sep 2019 16:07:39 +0900
Subject: [PATCH 1/3] fix: unexpectedly cal reset on changing frequency range

---
 main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/main.c b/main.c
index 0ca6be8..e4ab024 100644
--- a/main.c
+++ b/main.c
@@ -816,6 +816,7 @@ void
 set_sweep_frequency(int type, float frequency)
 {
   int32_t freq = frequency;
+  int cal_applied = cal_status & CALSTAT_APPLY;
   switch (type) {
   case ST_START:
     freq_mode_startstop();
@@ -895,7 +896,7 @@ set_sweep_frequency(int type, float frequency)
     break;
   }
 
-  if (cal_auto_interpolate && (cal_status & CALSTAT_APPLY))
+  if (cal_auto_interpolate && cal_applied)
     cal_interpolate(lastsaveid);
 }
 

From 4e2036ba36953023f7e193b289e10111e3978d43 Mon Sep 17 00:00:00 2001
From: TT <edy555@gmail.com>
Date: Sat, 28 Sep 2019 21:49:59 +0900
Subject: [PATCH 2/3] fix: #52

---
 main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/main.c b/main.c
index e4ab024..63177b1 100644
--- a/main.c
+++ b/main.c
@@ -755,9 +755,10 @@ void
 set_frequencies(uint32_t start, uint32_t stop, int16_t points)
 {
   int i;
-  uint32_t span = (stop - start) / 1000; /* prevents overflow because of maximum of int32_t(2.147e+9) */  
+  float span = stop - start;
   for (i = 0; i < points; i++)
-    frequencies[i] = start + span * i / (points - 1) * 1000;
+    frequencies[i] = start + i * span / (float)(points - 1);
+  // disable at out of sweep range
   for (; i < sweep_points; i++)
     frequencies[i] = 0;
 }

From 064477291afc408d593818077e7b65f0bed4722d Mon Sep 17 00:00:00 2001
From: TT <edy555@gmail.com>
Date: Sat, 28 Sep 2019 22:28:00 +0900
Subject: [PATCH 3/3] fixed: freeze device by clicking pause

---
 main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/main.c b/main.c
index 63177b1..a9adaf0 100644
--- a/main.c
+++ b/main.c
@@ -72,10 +72,12 @@ static THD_FUNCTION(Thread1, arg)
         __WFI();
       }
 
+      chMtxLock(&mutex);
+      ui_process();
+      chMtxUnlock(&mutex);
+
       if (sweep_enabled) {
         chMtxLock(&mutex);
-        ui_process();
-
         if (vbat != -1) {
           adc_stop(ADC1);
           vbat = adc_vbat_read(ADC1);