修改显示效果

app/src/display_manager.c

@@ -312,11 +312,7 @@ void dsp_mgr_change_to_sampling(int progress_s, int heartrate) {  //
   // wave_drawer_draw_border(&sps->wave_drawer);
 
   ssd1306_basic_draw_str(sps->heartrate_x + 2, sps->heartrate_y, &xchange, &ychange, "<>", &font_asicc16x8_lib);
-  if (heartrate <= 0) {
-    ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, "-- ", &font_asicc16x8_lib);
-  } else {
-    ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, fmt("%3d", heartrate), &font_asicc16x8_lib);
-  }
+  ssd1306_basic_draw_str(sps->heartrate_x + 4, sps->heartrate_y + 20, &xchange, &ychange, "-- ", &font_asicc16x8_lib);
   ssd1306_basic_gram_update();
   dsp_mgr_change_to_page(kPage_sampling);
 }
@@ -345,11 +341,13 @@ void samplePage_update_state(int progress_s, int wave_y, int heartrate, bool upd
   }
 
   if (heartrate <= 0) {
-    ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, "-- ", &font_asicc16x8_lib);
+    ssd1306_basic_draw_str(sps->heartrate_x + 4, sps->heartrate_y + 20, &xchange, &ychange, "-- ", &font_asicc16x8_lib);
   } else {
     if (heartrate >= 100) {
+      ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, "   ", &font_asicc16x8_lib);
       ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, fmt("%d", heartrate), &font_asicc16x8_lib);
     } else {
+      ssd1306_basic_draw_str(sps->heartrate_x, sps->heartrate_y + 20, &xchange, &ychange, "   ", &font_asicc16x8_lib);
       ssd1306_basic_draw_str(sps->heartrate_x + 4, sps->heartrate_y + 20, &xchange, &ychange, fmt("%d", heartrate), &font_asicc16x8_lib);
     }
   }