Initial commit

Author: p0ns

README.md

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+- Pull micropython for rp2350 (not yet merged to micropython repo) https://github.com/dpgeorge/micropython/tree/rp2-add-rp2350
+- Pull st7789_mpy from https://github.com/russhughes/st7789_mpy
+- Install tools for building micropython 
+- Build micropython for rp2350 with st7789_mpy `make BOARD=RPI_PICO2 USER_C_MODULES=path/to/st7789_mpy/st7789/micropython.cmake`
+- Flash firmware.u2f
+- Run python code

main.py

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+"""
+ST7789 example for DC32 badge
+"""
+import st7789
+import tft_config
+from machine import Pin
+import neopixel
+import time
+
+
+num_pixels = 9
+np = neopixel.NeoPixel(machine.Pin(4), num_pixels)
+tft = tft_config.config(3, buffer_size=4096) #rotation 3 for normal orientation, 1 for upside down
+
+def wheel(pos):
+    # Input a value 0 to 255 to get a color value.
+    # The colours are a transition r - g - b - back to r.
+    if pos < 0 or pos > 255:
+        return (0, 0, 0)
+    if pos < 85:
+        return (255 - pos * 3, pos * 3, 0)
+    if pos < 170:
+        pos -= 85
+        return (0, 255 - pos * 3, pos * 3)
+    pos -= 170
+    return (pos * 3, 0, 255 - pos * 3)
+
+def rainbow_cycle(wait):
+    for j in range(255):
+        for i in range(num_pixels):
+            rc_index = (i * 256 // num_pixels) + j
+            np[i] = wheel(rc_index & 255)
+        np.write()
+        time.sleep(0.01)
+
+RED = (255, 0, 0)
+YELLOW = (255, 150, 0)
+GREEN = (0, 255, 0)
+CYAN = (0, 255, 255)
+BLUE = (0, 0, 255)
+PURPLE = (180, 0, 255)
+
+
+
+def demo(np):
+    n = np.n
+
+    for i in range(0, 4 * 256, 8):
+        for j in range(n):
+            if (i // 256) % 2 == 0:
+                val = i & 0xff
+            else:
+                val = 255 - (i & 0xff)
+            np[j] = (val, 0, 0)
+        np.write()
+
+def main():
+
+    # Initial colors
+
+    np[0] = (255, 0, 0)
+    np[1] = (0, 128, 0)
+    np[2] = (0, 0, 64)
+    np[3] = (255, 0, 0)
+    np[4] = (0, 128, 0)
+    np[5] = (0, 0, 64)
+    np[6] = (255, 0, 0)
+    np[7] = (0, 128, 0)
+    np[8] = (0, 0, 64)
+
+    np.write()
+
+    png_file_name = f'lhc-320x240.png'
+    tft.init()
+    print(f'Displaying {png_file_name}')
+    tft.png(png_file_name, 0, 0)
+
+    while(True):
+        rainbow_cycle(0)  # Increase the number to slow down the rainbow
+
+main()

tft_config.py

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+"""DC32 Badge display config"""
+
+from machine import Pin, SoftSPI
+from time import sleep
+import st7789
+
+TFA = 40	# top free area when scrolling
+BFA = 40	# bottom free area when scrolling
+
+def config(rotation=0, buffer_size=0, options=0):
+    spi = SoftSPI(baudrate=62500000,
+        polarity=0,
+        phase=0,
+        sck=Pin(8),
+        mosi=Pin(6),
+        miso=Pin(28)) #SoftSPI needs a MISO pin, used one of the gpio on the SAO
+
+    return st7789.ST7789(
+        spi,
+        240,
+        320,
+        cs=Pin(9, Pin.OUT),
+        dc=Pin(5, Pin.OUT),
+        backlight=Pin(10, Pin.OUT),
+        rotation=rotation,
+        options=options,
+        buffer_size=buffer_size,
+        color_order=st7789.RGB,
+        inversion=False)