Add ili9341 setup file for Pi Pico.

color_setup/ili9341_pico.py

@@ -0,0 +1,40 @@
+# color_setup.py Customise for your hardware config
+
+# Released under the MIT License (MIT). See LICENSE.
+# Copyright (c) 2020 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
+
+from machine import Pin, SPI
+import gc
+
+# *** Choose your color display driver here ***
+# ili9341 specific driver
+from drivers.ili93xx.ili9341 import ILI9341 as SSD
+
+pdc = Pin(8, Pin.OUT, value=0)  # Arbitrary pins
+prst = Pin(9, Pin.OUT, value=1)
+pcs = Pin(10, Pin.OUT, value=1)
+
+# Kept as ssd to maintain compatability
+gc.collect()  # Precaution before instantiating framebuf
+# See DRIVERS.md re overclocking the SPI bus
+spi = SPI(0, 10_000_000)
+ssd = SSD(spi, dc=pdc, cs=pcs, rst=prst)

color_setup/ssd1351_pico.py

@@ -0,0 +1,46 @@
+# pico_setup.py Customise for your hardware config
+
+# Released under the MIT License (MIT). See LICENSE.
+# Copyright (c) 2020 Peter Hinch
+
+# As written, supports:
+# Adafruit 1.5" 128*128 OLED display: https://www.adafruit.com/product/1431
+# Adafruit 1.27" 128*96 display https://www.adafruit.com/product/1673
+# 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 GPIO no (package pin no. in parens)
+# Adafruit package pin nos and names.
+# Pico      SSD
+# Vbus(40)  Vin (10)
+# Gnd(18)   Gnd (11)
+# 15(20)    DC (3 DC)
+# 13(17)    CS (5 OC OLEDCS)
+# 14(19)    Rst (4 R RESET)
+# 10(14)    CLK (2 CL SCK)
+# 11(15)    DATA (1 SI MOSI)
+
+import machine
+import gc
+
+# *** Choose your color display driver here ***
+# Driver supporting non-STM platforms
+# from drivers.ssd1351.ssd1351_generic import SSD1351 as SSD
+
+# STM specific driver
+from drivers.ssd1351.ssd1351 import SSD1351 as SSD
+
+#height = 96  # 1.27 inch 96*128 (rows*cols) display
+height = 128 # 1.5 inch 128*128 display
+
+pdc = machine.Pin(15, machine.Pin.OUT, value=0)
+pcs = machine.Pin(13, machine.Pin.OUT, value=1)
+prst = machine.Pin(14, machine.Pin.OUT, value=1)
+#spi = machine.SPI(1, baudrate=1_000_000)
+spi = machine.SoftSPI(sck=machine.Pin(10, machine.Pin.OUT), mosi=machine.Pin(11, machine.Pin.OUT), miso=machine.Pin(8, machine.Pin.OUT))
+gc.collect()  # Precaution before instantiating framebuf
+ssd = SSD(spi, pcs, pdc, prst, height)  # Create a display instance

drivers/ili93xx/ili9341.py

@@ -15,19 +15,14 @@ import framebuf
 import uasyncio as asyncio
 
 @micropython.viper
-def _lcopy(dest:ptr8, source:ptr8, lut:ptr8, length:int):
+def _lcopy(dest:ptr16, source:ptr8, lut:ptr16, length:int):
+    # rgb565 - 16bit/pixel
     n = 0
     for x in range(length):
         c = source[x]
-        d = (c & 0xf0) >> 3  # 2* pointers (lut is 16 bit color)
-        e = (c & 0x0f) << 1
-        dest[n] = lut[d]  # LS byte 1st
+        dest[n] = lut[c >> 4]  # current pixel
         n += 1
-        dest[n] = lut[d + 1]
-        n += 1
-        dest[n] = lut[e]
-        n += 1
-        dest[n] = lut[e + 1]
+        dest[n] = lut[c & 0x0f]  # next pixel
         n += 1