fix tinySA3 build (issue #138)

- Modification of the tinySA3 repo source to re-enable a build from
the current repo content even if there are no relevant changes
for the little tinySA3.
- Fix also a warning about strncpy truncation in "ui.c".

Signed-off-by: Martin <Ho-Ro@users.noreply.github.com>

chconf.h

@@ -158,6 +158,8 @@
  */
 #ifdef TINYSA4
 #define CH_CFG_USE_WAITEXIT                 TRUE
+#else
+#define CH_CFG_USE_WAITEXIT                 FALSE
 #endif
 
 /**

main.c

@@ -2266,13 +2266,18 @@ VNA_SHELL_FUNCTION(cmd_info)
   (void)argc;
   (void)argv;
   int i = 0;
+#ifdef TINYSA3
   while (info_about[i]) {
-    shell_printf("%s%s\r\n", info_about[i], (i == 0 ? hw_text : ""));
+    shell_printf("%s\r\n", info_about[i]);
     i++;
   }
-#ifdef TINYSA3
   if (has_esd)
     shell_printf("ESD protected\r\n");
+#else
+  while (info_about[i]) {
+    shell_printf("%s%s\r\n", info_about[i], (i == 0 ? hw_text : ""));
+    i++;
+  }
 #endif
 }
 #endif

nanovna.h

@@ -18,7 +18,7 @@
  */
 #include "ch.h"
 
-//#ifdef TINYSA_F303
+#ifdef TINYSA_F303
 #ifdef TINYSA_F072
 #error "Remove comment for #ifdef TINYSA_F303"
 #endif
@@ -26,7 +26,7 @@
 #define TINYSA4
 #endif
 #define TINYSA4_PROTO
-//#endif
+#endif
 
 #ifdef TINYSA_F072
 #ifdef TINYSA_F303

sa_cmd.c

@@ -608,16 +608,18 @@ VNA_SHELL_FUNCTION(cmd_if)
 #ifdef TINYSA4
   if (hw_if)
     t = "1067M..1073M";
-  usage_printf("usage: if {%s}\r\n%QHz\r\n", t, setting.frequency_IF);
 #else
-    usage_printf("usage: if {433M..435M}\r\n%QHz\r\n", setting.frequency_IF);
+    t = "433M..435M";
 #endif
+  usage_printf("usage: if {%s}\r\n%QHz\r\n", t, setting.frequency_IF);
     return;
   }
   freq_t a = (freq_t)my_atoi(argv[0]);
   freq_t f = DEFAULT_IF;
+#ifdef TINYSA4
   if (hw_if)
     f = DEFAULT_IF_PLUS;
+#endif
   if (a!= 0 &&( a < (f - (freq_t)5000000) || a>(f + (freq_t)5000000)))
     goto usage;
   setting.auto_IF = false;

ui.c

@@ -6396,7 +6396,7 @@ redraw_cal_status:
   // Compact status string
 //  ili9341_set_background(LCD_FG_COLOR);
   ili9341_set_foreground(LCD_FG_COLOR);
-  strncpy(buf,"      ",BLEN-1);
+  strncpy(buf,"      ",BLEN);
   if (setting.auto_IF)
     buf[0] = 'f';
   else