newxie multi display

adding two demos for using four newxie displays together with raspberry pi

Newxie_TFT_Examples/Newxie_Python_Multi_Pi/newxie_clock.py

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+# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+from threading import Thread
+from PIL import Image, ImageDraw, ImageFont
+import digitalio
+import board
+import busio
+from adafruit_rgb_display import st7789
+
+BAUDRATE = 10000000
+WIDTH = 135
+HEIGHT = 240
+
+cs_pin0 = digitalio.DigitalInOut(board.D23)
+dc_pin0 = digitalio.DigitalInOut(board.D25)
+
+cs_pin1 = digitalio.DigitalInOut(board.CE1)
+dc_pin1 = digitalio.DigitalInOut(board.D24)
+
+cs_pin2 = digitalio.DigitalInOut(board.D16)
+dc_pin2 = digitalio.DigitalInOut(board.D26)
+
+cs_pin3 = digitalio.DigitalInOut(board.D17)
+dc_pin3 = digitalio.DigitalInOut(board.D27)
+
+spi = board.SPI()
+spi1 = busio.SPI(clock=board.D21, MOSI=board.D20)
+
+disp0 = st7789.ST7789(spi, rotation=180, width=WIDTH, height=HEIGHT,
+                      x_offset=53, y_offset=40, cs=cs_pin0, dc=dc_pin0, baudrate=BAUDRATE)
+disp1 = st7789.ST7789(spi, rotation=180, width=WIDTH, height=HEIGHT,
+                      x_offset=53, y_offset=40, cs=cs_pin1, dc=dc_pin1, baudrate=BAUDRATE)
+disp2 = st7789.ST7789(spi1, rotation=180, width=WIDTH, height=HEIGHT,
+                      x_offset=53, y_offset=40, cs=cs_pin2, dc=dc_pin2, baudrate=BAUDRATE)
+disp3 = st7789.ST7789(spi1, rotation=180, width=WIDTH, height=HEIGHT,
+                      x_offset=53, y_offset=40, cs=cs_pin3, dc=dc_pin3, baudrate=BAUDRATE)
+
+def update_digit_display(disp, get_digit_func):
+    font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", 80)
+    while True:
+        digit = get_digit_func()
+        image = Image.new("RGB", (WIDTH, HEIGHT), "black")
+        draw = ImageDraw.Draw(image)
+
+        text = str(digit)
+        text_width, text_height = draw.textsize(text, font=font)
+        text_x = (WIDTH - text_width) // 2
+        text_y = (HEIGHT - text_height) // 2
+        draw.text((text_x, text_y), text, font=font, fill="white")
+
+        disp.image(image)
+        time.sleep(1)
+
+def get_hour_tens():
+    current_time = time.localtime()
+    hour = current_time.tm_hour % 12 or 12
+    return hour // 10
+
+def get_hour_ones():
+    current_time = time.localtime()
+    hour = current_time.tm_hour % 12 or 12
+    return hour % 10
+
+def get_minute_tens():
+    current_time = time.localtime()
+    minute = current_time.tm_min
+    return minute // 10
+
+def get_minute_ones():
+    current_time = time.localtime()
+    minute = current_time.tm_min
+    return minute % 10
+
+Thread(target=update_digit_display, args=(disp0, get_hour_tens)).start()
+Thread(target=update_digit_display, args=(disp1, get_hour_ones)).start()
+Thread(target=update_digit_display, args=(disp2, get_minute_tens)).start()
+Thread(target=update_digit_display, args=(disp3, get_minute_ones)).start()

Newxie_TFT_Examples/Newxie_Python_Multi_Pi/newxie_count.py

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+# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+from threading import Thread, Lock
+from PIL import Image, ImageDraw, ImageFont
+import digitalio
+import board
+import busio
+from adafruit_rgb_display import st7789
+
+BAUDRATE = 25000000
+WIDTH = 135
+HEIGHT = 240
+
+cs_pin0 = digitalio.DigitalInOut(board.D23)
+dc_pin0 = digitalio.DigitalInOut(board.D25)
+
+cs_pin1 = digitalio.DigitalInOut(board.CE1)
+dc_pin1 = digitalio.DigitalInOut(board.D24)
+
+cs_pin2 = digitalio.DigitalInOut(board.D16)
+dc_pin2 = digitalio.DigitalInOut(board.D26)
+
+cs_pin3 = digitalio.DigitalInOut(board.D17)
+dc_pin3 = digitalio.DigitalInOut(board.D27)
+
+spi = board.SPI()
+spi1 = busio.SPI(clock=board.D21, MOSI=board.D20)
+
+disp0 = st7789.ST7789(spi, rotation=180, width=WIDTH, height=HEIGHT,
+                     x_offset=53, y_offset=40, cs=cs_pin0, dc=dc_pin0, baudrate=BAUDRATE)
+disp1 = st7789.ST7789(spi, rotation=180, width=WIDTH, height=HEIGHT,
+                      x_offset=53, y_offset=40, cs=cs_pin1, dc=dc_pin1, baudrate=BAUDRATE)
+disp2 = st7789.ST7789(spi1, rotation=180, width=WIDTH, height=HEIGHT,
+                      x_offset=53, y_offset=40, cs=cs_pin2, dc=dc_pin2, baudrate=BAUDRATE)
+disp3 = st7789.ST7789(spi1, rotation=180, width=WIDTH, height=HEIGHT,
+                      x_offset=53, y_offset=40, cs=cs_pin3, dc=dc_pin3, baudrate=BAUDRATE)
+
+def update_digit_display(disp, get_digit_func):
+    font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", 80)
+    while True:
+        digit = get_digit_func()
+        image = Image.new("RGB", (WIDTH, HEIGHT), "black")
+        draw = ImageDraw.Draw(image)
+
+        text = str(digit)
+        text_width, text_height = draw.textsize(text, font=font)
+        text_x = (WIDTH - text_width) // 2
+        text_y = (HEIGHT - text_height) // 2
+        draw.text((text_x, text_y), text, font=font, fill="white")
+
+        disp.image(image)
+        time.sleep(0.1)
+
+counter = 0
+counter_lock = Lock()
+# pylint: disable=global-statement
+def increment_counter():
+    global counter
+    while True:
+        with counter_lock:
+            counter = (counter + 1) % 10000
+        time.sleep(0.01)
+
+def digit_0():
+    with counter_lock:
+        return (counter // 1000) % 10
+
+def digit_1():
+    with counter_lock:
+        return (counter // 100) % 10
+
+def digit_2():
+    with counter_lock:
+        return (counter // 10) % 10
+
+def digit_3():
+    with counter_lock:
+        return counter % 10
+
+Thread(target=increment_counter).start()
+Thread(target=update_digit_display, args=(disp0, digit_0)).start()
+Thread(target=update_digit_display, args=(disp1, digit_1)).start()
+Thread(target=update_digit_display, args=(disp2, digit_2)).start()
+Thread(target=update_digit_display, args=(disp3, digit_3)).start()