From cc6618e6505e3f5ab4f0780ee946d1c97eb02202 Mon Sep 17 00:00:00 2001
From: Thomas Kolb <cfr34k-git@tkolb.de>
Date: Fri, 2 Aug 2024 21:14:23 +0200
Subject: [PATCH] Use actual time in plots

---
 src/main.cpp | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 6db08b1..77d96b9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -25,7 +25,7 @@ static bool      wiFiConnectedToStation;
 
 static WiFiUDP ntpUDP;
 
-NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 3600, 60000);
+NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 0, 60000);
 
 #define REF_ALTITUDE 320   // meters
 #define REF_CO2_PPM  425   // clean air according to DWD at 2024-06-17
@@ -89,9 +89,9 @@ void wifi_setup(void)
 
 void initSCD30(void)
 {
-	timeseries_init(&ts_scd30_co2, 0, 15, "ppm", "%.1f");
-	timeseries_init(&ts_scd30_temperature, 0, 15, "°C", "%.1f");
-	timeseries_init(&ts_scd30_humidity, 0, 15, "%", "%.1f");
+	timeseries_init(&ts_scd30_co2, timeClient.getEpochTime(), 15, "ppm", "%.1f");
+	timeseries_init(&ts_scd30_temperature, timeClient.getEpochTime(), 15, "°C", "%.1f");
+	timeseries_init(&ts_scd30_humidity, timeClient.getEpochTime(), 15, "%", "%.1f");
 
 	// Try to initialize!
 	if (!scd30.begin()) {
@@ -280,8 +280,6 @@ static void draw_epaper_callback(GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_H
 	y = 150 + FreeSans12pt7b.yAdvance*3/4;
 	display->setCursor(0, y);
 
-	display->setCursor(0, y);
-
 	display->setFont(&FreeSans12pt7b);
 	display->print("Feuchte: ");
 
@@ -295,6 +293,21 @@ static void draw_epaper_callback(GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_H
 	display->print(" %rH");
 
 	epaper_plot(150, 155, 150, 65, &ts_scd30_humidity, 900);
+
+	y = 225 + FreeSans12pt7b.yAdvance*3/4;
+	display->setCursor(0, y);
+
+	display->setFont(&FreeSans12pt7b);
+	display->print("Aktualisiert: ");
+
+	y += FreeSans12pt7b.yAdvance;
+	display->setCursor(0, y);
+
+	display->setFont(&FreeSansBold12pt7b);
+	display->print(timeClient.getFormattedTime());
+
+	display->setFont(&FreeSans12pt7b);
+	display->print(" UTC");
 }
 
 void loop(void)