Resolved time issues

README.md

@@ -28,6 +28,11 @@ These are all web sites, videos, and references I used when putting it together.
 - I pulled the Wifi connection code from [RTC Clock Demo](https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/examples/inky_frame/inky_frame_rtc_demo.py)
 - I couldn't find any examples or documentation for how to use [pngdec](https://github.com/pimoroni/pimoroni-pico/tree/main/micropython/modules/pngdec), which is the library for decoding and displaying PNG images. Luckily, it works a lot like [jpegdec](https://github.com/pimoroni/pimoroni-pico/tree/main/micropython/modules/jpegdec) and so I used the same APIs and it worked.
 
+## Home Assistant
+
+* [HACS](https://hacs.xyz/): extra customisation framework that basically all Home Assistant users should have
+* [Kiosk Mode](https://github.com/maykar/kiosk-mode): installs a "kiosk" mode of a Lovelace dashboard that hides the menu bars and stuff. Perfect for this application.
+
 ## Hass Screen Saver Kindle
 
 - The [main repository](https://github.com/sibbl/hass-lovelace-kindle-screensaver/tree/main)

inky-lovelace.py

@@ -21,6 +21,7 @@ from urllib import urequest
 from machine import Pin, SPI
 from network_manager import NetworkManager
 import time
+import ntptime
 import inky_frame
 import pngdec
 import gc
@@ -31,14 +32,15 @@ import inky_frame
 import uasyncio
 global graphics
 
-def display_image(j, CONFIG.FILENAME):
+def display_image(j):
     # Open the PNG file
     j.open_file(CONFIG.FILENAME)
     # Decode the PNG
     j.decode()
 
     # write the date/time at the top
-    year, month, day, hour, minute, second, dow, _ = time.localtime(time.time())
+    tz_seconds = (CONFIG.TZ_OFFSET * 3600)
+    year, month, day, hour, minute, second, dow, _ = time.gmtime(time.time() + tz_seconds)
     graphics.set_pen(0)
     graphics.set_font('sans')
     # display.text(text, x, y, wordwrap, scale, angle, spacing)
@@ -55,7 +57,7 @@ def show_error(text,y):
     graphics.text(text, 5, 16 + HEIGHT, 400, 2)
     gc.collect()
 
-def fetch(url):
+def fetch():
     """ Fetch the image, store it onboard.
         Returns False at first error.
         Returns True only if everything succeeds.
@@ -74,29 +76,40 @@ def fetch(url):
         return False
     inky_frame.button_b.led_off()
 
-    year, month, day, hour, minute, second, dow, _ = time.localtime(time.time())
+    tz_seconds = (CONFIG.TZ_OFFSET * 3600)
+    year, month, day, hour, minute, second, dow, _ = time.gmtime(time.time() + tz_seconds)
     print(f"{hour:02}:{minute:02} {year}-{month}-{day}")
 
+    count = 0
     if year < 2023:
-        # blink b when we are setting the time
-        inky_frame.button_b.led_on()
-        inky_frame.set_time() # set time from network
-        inky_frame.button_b.led_off()
+        # blink d when we are setting the time
+        inky_frame.button_d.led_on()
+        ntptime.host = '0.us.pool.ntp.org'
+        while count < 5:
+          try:
+            inky_frame.set_time() # set time from network
+          except OSError as e:
+            print( "x", end="" )
+            count += 1
+        inky_frame.button_d.led_off()
 
-    tz_seconds = (CONFIG.TZ_OFFSET * 3600)
-    year, month, day, hour, minute, second, dow, _ = time.localtime(time.time() + tz_seconds)
+    if count >= 5:
+        # turn on E to indicate error. gets turned off later.
+        inky_frame.button_e.led_on()
+
+    year, month, day, hour, minute, second, dow, _ = time.gmtime(time.time() + tz_seconds)
 
     # don't bother updating before 06:00 or after 23:00
     if hour < 5 or hour > 22:
-        print("no need to fetch")
+        print(f"hour {hour:02}, no need to fetch")
         return False
-    del year, month, day, hour, minute, second, tz_seconds
-    print( "fetching " + url )
+    del year, month, day, hour, minute, second, tz_seconds, count
+    print( "fetching " + CONFIG.IMG_URL )
     inky_frame.button_c.led_on()
 
     try:
         # Grab the image
-        socket = urequest.urlopen(url)
+        socket = urequest.urlopen(CONFIG.IMG_URL)
         gc.collect()
     except OSError as e:
         print("Unable open URL. OSErr: ")
@@ -161,7 +174,7 @@ while True:
     mount_sd()
     gc.collect()
     inky_frame.button_a.led_off()
-    if fetch(CONFIG.IMG_URL):
+    if fetch():
         gc.collect()
         inky_frame.button_e.led_on()
 
@@ -171,7 +184,7 @@ while True:
         # Create a new PNG decoder for our PicoGraphics
         j = pngdec.PNG(graphics)
 
-        display_image(j, CONFIG.FILENAME)
+        display_image(j)
         # Display the result
         graphics.update()