Merge pull request #7 from makermelissa/master

Added TFT Gizmo Example

Author: siddacious

examples/st7789_tft_gizmo_simpletest.py

@@ -0,0 +1,55 @@
+"""
+This test will initialize the display using displayio and draw a solid green
+background, a smaller purple rectangle, and some yellow text.
+"""
+import board
+import busio
+import displayio
+import terminalio
+from adafruit_display_text import label
+from adafruit_st7789 import ST7789
+
+# Release any resources currently in use for the displays
+displayio.release_displays()
+
+spi = busio.SPI(board.SCL, MOSI=board.SDA)
+tft_cs = board.RX
+tft_dc = board.TX
+tft_backlight = board.A3
+
+display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs)
+
+display = ST7789(display_bus, width=240, height=240, rowstart=80,
+                 backlight_pin=tft_backlight, rotation=180)
+
+# Make the display context
+splash = displayio.Group(max_size=10)
+display.show(splash)
+
+color_bitmap = displayio.Bitmap(240, 240, 1)
+color_palette = displayio.Palette(1)
+color_palette[0] = 0x00FF00 # Bright Green
+
+bg_sprite = displayio.TileGrid(color_bitmap,
+                               pixel_shader=color_palette,
+                               x=0, y=0)
+splash.append(bg_sprite)
+
+# Draw a smaller inner rectangle
+inner_bitmap = displayio.Bitmap(200, 200, 1)
+inner_palette = displayio.Palette(1)
+inner_palette[0] = 0xAA0088 # Purple
+inner_sprite = displayio.TileGrid(inner_bitmap,
+                                  pixel_shader=inner_palette,
+                                  x=20, y=20)
+splash.append(inner_sprite)
+
+# Draw a label
+text_group = displayio.Group(max_size=10, scale=2, x=50, y=120)
+text = "Hello World!"
+text_area = label.Label(terminalio.FONT, text=text, color=0xFFFF00)
+text_group.append(text_area) # Subgroup for text scaling
+splash.append(text_group)
+
+while True:
+    pass