companion: get/set timezone offset for clock

* Add tz_offset companion prefs and get/set commands for companion cli
* Use tz_offset for clock on display

Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>

examples/companion_radio/MyMesh.cpp

@@ -2166,6 +2166,22 @@ bool MyMesh::handleCommand(const char* command, uint32_t sender_timestamp, char*
     return true;
   }
 
+  if (strcmp(command, "get tz.offset") == 0) {
+    sprintf(reply, "> %d", _prefs.tz_offset);
+    return true;
+  }
+  if (memcmp(command, "set tz.offset ", 14) == 0) {
+    int8_t tz = atof(&command[14]);
+    if (tz < -12 || tz > 14) {
+      strcpy(reply, "Error, must be from -12 to +14");
+    } else {
+      _prefs.tz_offset = tz;
+      savePrefs();
+      strcpy(reply, "OK");
+    }
+    return true;
+  }
+
   return false;  // not handled
 }
 

examples/companion_radio/NodePrefs.h

@@ -43,6 +43,7 @@ public:
   uint8_t cad_enabled = 0;
   char default_scope_name[31];
   uint8_t default_scope_key[16];
+  int8_t tz_offset = 0;
 
 private:
   class RadioPrefs : public CommonRadioPrefs {
@@ -150,6 +151,7 @@ private:
       def("tel_base", _parent->telemetry_mode_base);
       def("tel_loc", _parent->telemetry_mode_loc);
       def("tel_env", _parent->telemetry_mode_env);
+      def("tz_offset", _parent->tz_offset);
     }
   public:
     CompanionPrefs(NodePrefs* parent) : _parent(parent) { }

examples/companion_radio/ui-new/UITask.cpp

@@ -7,10 +7,6 @@
   #include <WiFi.h>
 #endif
 
-#ifndef UI_TZ_OFFSET
-  #define UI_TZ_OFFSET 0
-#endif
-
 #ifndef AUTO_OFF_MILLIS
   #define AUTO_OFF_MILLIS     15000   // 15 seconds
 #endif
@@ -256,8 +252,7 @@ public:
       #ifdef UI_SHOW_CLOCK
       display.setTextSize(3);
       uint32_t now = _rtc->getCurrentTime();
-      int8_t tz = UI_TZ_OFFSET; // for now draw time from Santo Domingo ...
-      now += (int32_t)tz * 3600;
+      now += (int32_t)_node_prefs->tz_offset * 3600;
       DateTime dt (now);
       sprintf(tmp, "%02d:%02d", dt.hour(), dt.minute());
       display.drawTextCentered(display.width() / 2, 60, tmp);

variants/thinknode_m8/platformio.ini

@@ -22,7 +22,6 @@ build_flags = ${nrf52_base.build_flags}
   -D UI_HAS_ROTARY_INPUT=1
   -D UI_HAS_NAV_INPUT=1
   -D UI_RECENT_LIST_SIZE=9
-  -D UI_TZ_OFFSET=-4 # GMT-4
   -D UI_MSG_PREVIEW_SIZE=165
   -D EINK_MAX_PARTIAL_REFRESH=60
   -D EINK_DISPLAY_MODEL=GxEPD2_154_D67