diff --git a/main.c b/main.c
index 40efb1d..a58f256 100644
--- a/main.c
+++ b/main.c
@@ -2723,6 +2723,7 @@ void HardFault_Handler(void);
 
 void hard_fault_handler_c(uint32_t *sp) __attribute__((naked));
 
+
 void HardFault_Handler(void)
 {
   uint32_t *sp;
@@ -2730,10 +2731,58 @@ void HardFault_Handler(void)
   __asm volatile("mrs %0, psp \n\t" : "=r"(sp));
   hard_fault_handler_c(sp);
 }
-
-void hard_fault_handler_c(uint32_t *sp) 
-{
+#define FONT_STR_HEIGHT 7
+
+void hard_fault_handler_c(uint32_t *sp)
+{
+#if 1
+  uint32_t r0  = sp[0];
+  uint32_t r1  = sp[1];
+  uint32_t r2  = sp[2];
+  uint32_t r3  = sp[3];
+  register uint32_t  r4 __asm("r4");
+  register uint32_t  r5 __asm("r5");
+  register uint32_t  r6 __asm("r6");
+  register uint32_t  r7 __asm("r7");
+  register uint32_t  r8 __asm("r8");
+  register uint32_t  r9 __asm("r9");
+  register uint32_t r10 __asm("r10");
+  register uint32_t r11 __asm("r11");
+  uint32_t r12 = sp[4];
+  uint32_t lr  = sp[5];
+  uint32_t pc  = sp[6];
+  uint32_t psr = sp[7];
+  int y = 0;
+  int x = 20;
+static  char buf[16];
+  ili9341_set_background(0x0000);
+  ili9341_set_foreground(0xFFFF);
+
+  plot_printf(buf, sizeof(buf), "SP  0x%08x",  (uint32_t)sp);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R0  0x%08x",  r0);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R1  0x%08x",  r1);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R2  0x%08x",  r2);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R3  0x%08x",  r3);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R4  0x%08x",  r4);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R5  0x%08x",  r5);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R6  0x%08x",  r6);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R7  0x%08x",  r7);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R8  0x%08x",  r8);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R9  0x%08x",  r9);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R10 0x%08x", r10);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R11 0x%08x", r11);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "R12 0x%08x", r12);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "LR  0x%08x",  lr);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "PC  0x%08x",  pc);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+  plot_printf(buf, sizeof(buf), "PSR 0x%08x", psr);ili9341_drawstring(buf, x, y+=FONT_STR_HEIGHT);
+
+  shell_printf("===================================\r\n");
+#else
   (void)sp;
+#endif
   while (true) {
   }
 }
+
+
+
diff --git a/plot.c b/plot.c
index 933bc5a..f7fbd99 100644
--- a/plot.c
+++ b/plot.c
@@ -2151,9 +2151,9 @@ draw_frequencies(void)
       float t = setting.actual_sweep_time; // in mS
           ; // in mS
       if (t>=1000)
-          plot_printf(buf2, sizeof(buf2), "%.2fS",t/1000.0);
+          plot_printf(buf2, sizeof(buf2), "TIME %.2fS",t/1000.0);
       else
-        plot_printf(buf2, sizeof(buf2), "%.2fmS", t);
+        plot_printf(buf2, sizeof(buf2), "TIME %.2fmS", t);
 
     } else if (FREQ_IS_STARTSTOP()) {
       plot_printf(buf1, sizeof(buf1), " START %qHz", get_sweep_frequency(ST_START));
diff --git a/sa_core.c b/sa_core.c
index 2fb7e88..5371cbd 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -195,6 +195,7 @@ void set_sweep_time(float t)
   setting.sweep_time = t;
   if (FREQ_IS_CW())
     update_grid();            // Really only needed in zero span mode
+  redraw_request |= REDRAW_FREQUENCY;
   dirty = true;
 }