Update display only if percentage has changed and print X when mail sent

src/program.py

@@ -240,7 +240,7 @@ def display_site_measure(epd, titel, titel_pos, val):
     draw.text((156, 110), "Abbrechen", font = font_label, fill = 0)
     epd.display(epd.getbuffer(dp))
 
-def display_site_main(epd, cl, ph):
+def display_site_main(epd, cl, ph, clm, phm):
     dp = Image.new('1', (epd.height, epd.width), 255)
     newimage = Image.open(os.path.join(picdir, 'tankgrafik.bmp'))
     dp.paste(newimage, (0,0))
@@ -255,9 +255,11 @@ def display_site_main(epd, cl, ph):
         draw.rectangle((10, 78, 114, 85), outline = 1, fill = 1)
     if cl < 20:
         draw.rectangle((10, 90, 114, 97), outline = 1, fill = 1)
-    if cl < ALARM_LEVEL_CM: #todo and email
-        draw.rectangle((10, 54, 114, 109), outline = 1, fill = 1)
-        draw.text((37, 53), "X", font = font_huge, fill = 0)
+    if cl < ALARM_LEVEL_CM:
+        if clm == 1:
+            draw.text((37, 53), "X", font = font_huge, fill = 0)
+        else:
+            draw.rectangle((10, 54, 114, 109), outline = 1, fill = 1)
     if ph < 80:
         draw.rectangle((135, 54, 239, 61), outline = 1, fill = 1)
     if ph < 60:
@@ -266,9 +268,11 @@ def display_site_main(epd, cl, ph):
         draw.rectangle((135, 78, 239, 85), outline = 1, fill = 1)
     if ph < 20:
         draw.rectangle((135, 90, 239, 97), outline = 1, fill = 1)
-    if ph < ALARM_LEVEL_CM: #todo and email
-        draw.rectangle((135, 54, 239, 109), outline = 1, fill = 1)
-        draw.text((164, 53), "X", font = font_huge, fill = 0)
+    if ph < ALARM_LEVEL_CM:
+        if phm == 1:
+            draw.text((164, 53), "X", font = font_huge, fill = 0)
+        else:
+            draw.rectangle((135, 54, 239, 109), outline = 1, fill = 1)
     epd.display(epd.getbuffer(dp))
 
 if __name__ == '__main__':
@@ -283,7 +287,7 @@ if __name__ == '__main__':
     font_label = ImageFont.truetype(os.path.join(picdir, 'squarea.ttf'), 15)
     font_huge = ImageFont.truetype(os.path.join(picdir, 'squarea.ttf'), 74)
 
-    display_site_main(epd, 0, 0)
+    display_site_main(epd, 0, 0, 0, 0)
 
     print("Lese config.ini...")
     config = configparser.ConfigParser()
@@ -318,6 +322,8 @@ if __name__ == '__main__':
     print("Starte Hauptprogramm...")
     mavg_cl = MovingAverage(AVG_WINDOWSIZE)
     mavg_ph = MovingAverage(AVG_WINDOWSIZE)
+    clp_prev = -1
+    php_prev = -1
     while True:
         try:
             state = buttons.get_state()
@@ -406,9 +412,14 @@ if __name__ == '__main__':
                     ph_status = False
                 clp = get_percent(cl_leer, cl_voll, cl)
                 php = get_percent(ph_leer, ph_voll, ph)
-                display_site_main(epd, clp, php)
                 print("Chlor: {:10.2f} cm, pH-Minus: {:10.2f} cm".format(cl, ph))
                 print("Chlor: {:10.2f} %,  pH-Minus: {:10.2f} %".format(clp, php))
+                clp = round(clp, 0)
+                php = round(php, 0)
+                if clp != clp_prev or php != php_prev:
+                    display_site_main(epd, clp, php, cl_mail, ph_mail)
+                clp_prev = clp
+                php_prev = php
                 if cl_status and abs(cl_leer - ALARM_LEVEL_CM) < cl:
                     print(f"{Fore.RED}Chlor-Tank fast leer!{Style.RESET_ALL}")
                     if cl_mail == 0:
@@ -431,4 +442,4 @@ if __name__ == '__main__':
                             config.write(configfile)
             time.sleep(0.5)
         except KeyboardInterrupt:
-            shutdown(epd)
+            shutdown(epd)