adding HSTX example for Metro RP2350

Metro_RP2350_Examples/CircuitPython_HSTX_Display/code.py

@@ -0,0 +1,32 @@
+# SPDX-FileCopyrightText: 2024 Scott Shawcroft for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import board
+import picodvi
+import framebufferio
+import displayio
+
+displayio.release_displays()
+
+fb = picodvi.Framebuffer(320, 240, clk_dp=board.CKP, clk_dn=board.CKN,
+                                   red_dp=board.D0P, red_dn=board.D0N,
+                                   green_dp=board.D1P, green_dn=board.D1N,
+                                   blue_dp=board.D2P, blue_dn=board.D2N,
+                                   color_depth=16)
+display = framebufferio.FramebufferDisplay(fb)
+
+# Initialize the display in the display variable
+ruler = displayio.OnDiskBitmap("/display-ruler-rgb-720p.bmp")
+
+t = displayio.TileGrid(ruler, pixel_shader=ruler.pixel_shader)
+
+g = displayio.Group()
+g.append(t)
+
+display.root_group = g
+
+display.refresh()
+
+while True:
+    pass