ntp for nina

ntp_simple_demo/ntp_demo_nina.py

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+"""
+Modified from https://gist.github.com/netroy/d1bff654fa58b884d63894ca2c890fc6
+"""
+import board
+import rtc
+import struct
+import time
+import displayio
+import terminalio
+from adafruit_display_text import bitmap_label as label
+
+# configure your timezone, DST included
+TZ_OFFSET = 3600 * 2
+
+
+# SETUP ESP HERE
+from adafruit_esp32spi import adafruit_esp32spi
+from adafruit_esp32spi import adafruit_esp32spi_wifimanager
+
+esp32_cs = DigitalInOut(board.ESP_CS)
+esp32_ready = DigitalInOut(board.ESP_BUSY)
+esp32_reset = DigitalInOut(board.ESP_RESET)
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+
+print("CONNECT WIFI")
+while not esp.is_connected:
+	try:
+		esp.connect_AP(os.getenv("WIFI_SSID"), os.getenv("WIFI_PASSWORD"))
+	except RuntimeError as e:
+		print("could not connect to AP, retrying: ", e)
+		continue
+
+def get_ntp_time(esp):
+    # get_time will raise ValueError if the time isn't available yet so loop until
+    # it works.
+    now_utc = None
+    while now_utc is None:
+        try:
+            now_utc = time.localtime(esp.get_time()[0])
+        except OSError:
+            pass
+    rtc.RTC().datetime = now_utc
+
+now = get_ntp_time(esp)
+print("Synced with NTP")
+print(now)
+
+time.sleep(1.0)
+
+display = None
+if hasattr(board, "DISPLAY"):
+    display = board.DISPLAY
+else:
+    pass
+    # insert external display init
+
+if display:
+    display.auto_refresh = False
+    group = displayio.Group()
+    display.show(group)
+    text_area = label.Label(
+        terminalio.FONT,
+        scale=3,
+        color=(255, 255, 255),
+        anchor_point=(0.5, 0.5),
+        anchored_position=(
+            display.width // 2,
+            display.height // 2,
+        ),
+        text="Hello",
+    )
+    group.append(text_area)
+    display.refresh()
+
+previous_clock = ""
+
+while True:
+    now = time.localtime()
+    clock = "{hour:02d}:{min:02d}:{seconds:02d}".format(
+        hour=now.tm_hour, min=now.tm_min, seconds=now.tm_sec
+    )
+    if clock != previous_clock:
+        print(clock)
+        if display:
+            text_area.text = clock
+            display.refresh()
+        previous_clock = clock
+    time.sleep(0.2)