Raspberry Pi Pico 2/MicroPython display on 1.54" 240x240 ST7789 SPI IPS
Exercise of
Raspberry Pi Pico 2
running MicroPython v1.24.0-preview.449 (normal and RISCV version) to
display on 1.54" 240x240 ST7789 SPI IPS.
Connection:
Library russhughes/st7789py_mpy (driver for 320x240, 240x240, 135x240 and 128x128 ST7789 displays written in MicroPython) is used in this exercise, read the video to install it on Pico 2.
Exercise code:
mpy_pico2_st7789_hello.py
"""
Raspberry Pi Pico/MicroPython exercise
to display on 1.54" IPS 240x240 with SPI ST7789 driver
Hello World and color test
Using library: russhughes/st7789py_mpy,
driver for 320x240, 240x240, 135x240 and 128x128 ST7789 displays written in MicroPython.
(https://github.com/russhughes/st7789py_mpy)
Connection:
-----------
GND GND
VCC 3V3
SCL GP18
SDA GP19
RES GP20
DC GP21
CS GP17
BLK GP22
GP16 (dummy, not used)
"""
import os, sys
from machine import Pin, SPI
import time
import st7789py as st7789
import vga1_bold_16x32
# more fonts here: https://github.com/russhughes/st7789py_mpy/tree/master/romfonts
disp_sck = 18 # default SCK of SPI(0)
disp_mosi = 19 # default MOSI of SPI(0)
disp_miso = 16 # not use
disp_res = 20
disp_dc = 21
disp_cs = 17
disp_blk = 22
print("====================================")
print(sys.implementation[0], os.uname()[3],
"\nrun on", os.uname()[4])
print("====================================")
DISP_WIDTH = 240
DISP_HEIGHT = 240
# it's found that:
# - cannot set baudrate
# - even I set miso=None, miso will be assigned deault GP16 or previous assigned miso
disp_spi = SPI(0, baudrate=60000000, sck=Pin(disp_sck), mosi=Pin(disp_mosi), miso=None)
print(disp_spi)
display = st7789.ST7789(disp_spi,
DISP_WIDTH, DISP_HEIGHT,
reset=Pin(disp_res, Pin.OUT),
cs=Pin(disp_cs, Pin.OUT),
dc=Pin(disp_dc, Pin.OUT),
backlight=Pin(disp_blk, Pin.OUT))
print(st7789.__name__, display.width, "x", display.height)
display.fill(st7789.WHITE)
display.fill_rect(1, 1, display.width-2, display.height-2, st7789.BLACK)
display.text(font = vga1_bold_16x32,
text = "Hello",
x0 = 10,
y0 = 10,
color = st7789.WHITE,
background = st7789.BLACK)
display.text(vga1_bold_16x32,
st7789.__name__,
10,
42,
st7789.WHITE,
st7789.BLACK)
# display title on last line, center horizontally.
# for 16x32 font
title_text = "- coXXect -"
display.text(vga1_bold_16x32,
title_text,
int((display.width - len(title_text)*16)/2), # center horizontally
display.height - 32, # last line
st7789.WHITE,
st7789.BLACK)
#color test
color_factor = 255/(240+240)
print("RED:\t", end="")
start_time = time.ticks_ms()
for y in range(display.height):
for x in range(display.width):
r = int((x + y) * color_factor)
display.pixel(x, y, st7789.color565(r, 0, 0))
end_time = time.ticks_ms()
print("ticks_diff()", time.ticks_diff(end_time, start_time), "ms")
print("GREEN:\t", end="")
start_time = time.ticks_ms()
for y in range(display.height):
for x in range(display.width):
g = int((x + y) * color_factor)
display.pixel(x, y, st7789.color565(0, g, 0))
end_time = time.ticks_ms()
print("ticks_diff()", time.ticks_diff(end_time, start_time), "ms")
print("BLUE:\t", end="")
start_time = time.ticks_ms()
for y in range(display.height):
for x in range(display.width):
b = int((x + y) * color_factor)
display.pixel(x, y, st7789.color565(0, 0, b))
end_time = time.ticks_ms()
print("ticks_diff()", time.ticks_diff(end_time, start_time), "ms")
print("WHITE:\t", end="")
start_time = time.ticks_ms()
for y in range(display.height):
for x in range(display.width):
w = int((x + y) * color_factor)
display.pixel(x, y, st7789.color565(w, w, w))
end_time = time.ticks_ms()
print("ticks_diff()", time.ticks_diff(end_time, start_time), "ms")
print("~ bye ~")
mpy_pico2_st7789_star.py
"""
Raspberry Pi Pico/MicroPython exercise
to display on 1.54" IPS 240x240 with SPI ST7789 driver
Display stars using polygon
Using library: russhughes/st7789py_mpy,
driver for 320x240, 240x240, 135x240 and 128x128 ST7789 displays written in MicroPython.
(https://github.com/russhughes/st7789py_mpy)
Connection:
-----------
GND GND
VCC 3V3
SCL GP18
SDA GP19
RES GP20
DC GP21
CS GP17
BLK GP22
GP16 (dummy, not used)
"""
import os, sys
from machine import Pin, SPI
import st7789py as st7789
from array import array
import math
import time
disp_sck = 18 # default SCK of SPI(0)
disp_mosi = 19 # default MOSI of SPI(0)
disp_miso = 16 # not use
disp_res = 20
disp_dc = 21
disp_cs = 17
disp_blk = 22
# === myStarClass class ===
class myStarClass:
def __init__(self, num_of_ends, r1, r2, angle=0):
self.num_of_ends = num_of_ends
self.r1 = r1
self.r2 = r2
self.angle = angle
self.coords_list = []
self.reCal_coords_list()
def set_angle(self, angle=0):
self.angle = angle
def update_coords_list(self, num_of_ends, r1, r2):
self.num_of_ends = num_of_ends
self.r1 = r1
self.r2 = r2
self.coords_list.clear()
self.reCal_coords_list()
def reCal_coords_list(self):
# Polygon must have at least 3 points.
half_angle_per_end = (360/self.num_of_ends)/2
for end in range(self.num_of_ends):
angle_in_radians = math.radians((360 * end/self.num_of_ends))
self.coords_list.append([int(self.r1 * math.sin(angle_in_radians)),
int(self.r1 * math.cos(angle_in_radians))])
angle_in_radians = math.radians((360 * end/self.num_of_ends) + half_angle_per_end)
self.coords_list.append([int(self.r2 * math.sin(angle_in_radians)),
int(self.r2 * math.cos(angle_in_radians))])
self.coords_list.append(self.coords_list[0]) #close polygon
def show(self, screen, offset_x=0, offset_y=0):
screen.polygon(
points=self.coords_list,
x=offset_x, y=offset_y,
color=st7789.color565(255, 255, 255),
angle=self.angle)
# === End of myFixedPolygonClass ===
print("====================================")
print(sys.implementation[0], os.uname()[3],
"\nrun on", os.uname()[4])
print("====================================")
DISP_WIDTH = 240
DISP_HEIGHT = 240
# it's found that:
# - cannot set baudrate
# - even I set miso=None, miso will be assigned deault GP16 or previous assigned miso
disp_spi = SPI(0, baudrate=60000000, sck=Pin(disp_sck), mosi=Pin(disp_mosi), miso=None)
print(disp_spi)
display = st7789.ST7789(disp_spi,
DISP_WIDTH, DISP_HEIGHT,
reset=Pin(disp_res, Pin.OUT),
cs=Pin(disp_cs, Pin.OUT),
dc=Pin(disp_dc, Pin.OUT),
backlight=Pin(disp_blk, Pin.OUT))
print(st7789.__name__, display.width, "x", display.height)
display.fill(st7789.WHITE)
display.fill_rect(1, 1, display.width-2, display.height-2, st7789.BLACK)
# Star animation
num_of_ends = 3
r1 = 75
r2 = 25
myStar1 = myStarClass(num_of_ends = num_of_ends,
r1 = r1, r2 = r2)
myStar1.show(display, int(display.width/2), int(display.height/2))
for num_of_ends in range(3, 11):
myStar1.update_coords_list(num_of_ends, r1, r2)
display.fill(0)
myStar1.show(display, int(display.width/2), int(display.height/2))
time.sleep(1)
num_of_ends = 4
myStar1.update_coords_list(num_of_ends, r1, r2)
for angle in range(0, 360, 10):
myStar1.set_angle(math.radians(angle))
display.fill(0)
myStar1.show(display, int(display.width/2), int(display.height/2))
time.sleep(0.2)
print("~ bye ~")
Next:
~ Raspberry Pi Pico 2/MicroPython read bmp images and draw on ST7789 display pixel-by-pixel.
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