Add Pimoroni Pico Display example.

setup_examples/st7789_pico_display_pack.py

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+# hardware_setup.py Customise for your hardware config
+
+# Released under the MIT License (MIT). See LICENSE.
+# Copyright (c) 2021 Peter Hinch, Ihor Nehrutsa, Austin St. Aubin
+
+# Supports:
+# Pico Display Pack 1.14" 240*240(Pixel) based on ST7789V
+# https://shop.pimoroni.com/products/pico-display-pack
+# https://shop.pimoroni.com/products/pico-enviro-pack
+
+from machine import Pin, SPI
+import gc
+
+from drivers.st7789.st7789_4bit import *
+SSD = ST7789
+
+gc.collect()  # Precaution before instantiating framebuf
+
+# Conservative low baudrate. Can go to 62.5MHz.
+spi = SPI(0, 30_000_000, sck=Pin(18), mosi=Pin(19), miso=None)
+pdc = Pin(16, Pin.OUT, value=0)
+pcs = Pin(17, Pin.OUT, value=1)
+pbl = Pin(20, Pin.OUT, value=1)
+prst = Pin(21, Pin.OUT, value=1)
+
+# Note: LANDSCAPE = PORTRAIT, is flipped with this display
+ssd = SSD(spi, height=240, width=240, dc=pdc, cs=pcs, rst=prst, disp_mode=LANDSCAPE, display=GENERIC)
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+# Create and export a Display instance
+from gui.core.ugui import Display
+
+# https://cdn.shopify.com/s/files/1/0174/1800/files/pico_enviro_pack_schematic.pdf
+# Button Pinout
+BUTTON_A = 12
+BUTTON_B = 13
+BUTTON_X = 14
+BUTTON_Y = 15
+
+# Define control buttons
+nxt = Pin(BUTTON_X, Pin.IN, Pin.PULL_UP)  # Move to next control
+sel = Pin(BUTTON_A, Pin.IN, Pin.PULL_UP)  # Operate current control
+prev = Pin(BUTTON_Y, Pin.IN, Pin.PULL_UP)  # Move to previous control
+increase = None ### Pin(BUTTON_A, Pin.IN, Pin.PULL_UP)  # Increase control's value
+decrease = None ### Pin(11, Pin.IN, Pin.PULL_UP)  # Decrease control's value
+
+display = Display(ssd, nxt, sel, prev, increase, decrease, False)