# ili9341_pico.py Customise for your hardware config # Released under the MIT License (MIT). See LICENSE. # Copyright (c) 2021 Peter Hinch # As written, supports: # ili9341 240x320 displays on Pi Pico # Edit the driver import for other displays. # Demo of initialisation procedure designed to minimise risk of memory fail # when instantiating the frame buffer. The aim is to do this as early as # possible before importing other modules. # WIRING # Pico Display # GPIO Pin # 3v3 36 Vin # IO6 9 CLK Hardware SPI0 # IO7 10 DATA (AKA SI MOSI) # IO8 11 DC # IO9 12 Rst # Gnd 13 Gnd # IO10 14 CS # Pushbuttons are wired between the pin and Gnd # Pico pin Meaning # 16 Operate current control # 17 Decrease value of current control # 18 Select previous control # 19 Select next control # 20 Increase value of current control from machine import Pin, SPI, freq import gc from drivers.ili93xx.ili9341 import ILI9341 as SSD freq(250_000_000) # RP2 overclock # Create and export an SSD instance pdc = Pin(8, Pin.OUT, value=0) # Arbitrary pins prst = Pin(9, Pin.OUT, value=1) pcs = Pin(10, Pin.OUT, value=1) spi = SPI(0, baudrate=30_000_000) gc.collect() # Precaution before instantiating framebuf ssd = SSD(spi, pcs, pdc, prst, usd=True) from gui.core.ugui import Display, setup # Create and export a Display instance # Define control buttons nxt = Pin(19, Pin.IN, Pin.PULL_UP) # Move to next control sel = Pin(16, Pin.IN, Pin.PULL_UP) # Operate current control prev = Pin(18, Pin.IN, Pin.PULL_UP) # Move to previous control increase = Pin(20, Pin.IN, Pin.PULL_UP) # Increase control's value decrease = Pin(17, Pin.IN, Pin.PULL_UP) # Decrease control's value display = Display(ssd, nxt, sel, prev, increase, decrease) setup(display)