Graph plotting and text on a curve.
Código Completo
# WaveShare Pico LCD 1.8 inch Display
# TFT Display Workout
# Tony Goodhew - 1 July 2021
#======== START OF DRIVER AND SETUP ===========
# https://www.waveshare.com/wiki/Pico-LCD-1.8
from machine import Pin,SPI,PWM
import framebuf
import machine
import utime
import random
import math
BL = 13
DC = 8
RST = 12
MOSI = 11
SCK = 10
CS = 9
class LCD_1inch8(framebuf.FrameBuffer):
def __init__(self):
self.width = 161 # This number was not expected?
self.height = 130
self.cs = Pin(CS,Pin.OUT)
self.rst = Pin(RST,Pin.OUT)
self.cs(1)
self.spi = SPI(1)
self.spi = SPI(1,1000_000)
self.spi = SPI(1,10000_000,polarity=0, phase=0,sck=Pin(SCK),mosi=Pin(MOSI),miso=None)
self.dc = Pin(DC,Pin.OUT)
self.dc(1)
self.buffer = bytearray(self.height * self.width * 2)
super().__init__(self.buffer, self.width, self.height, framebuf.RGB565)
self.init_display()
def write_cmd(self, cmd):
self.cs(1)
self.dc(0)
self.cs(0)
self.spi.write(bytearray([cmd]))
self.cs(1)
def write_data(self, buf):
self.cs(1)
self.dc(1)
self.cs(0)
self.spi.write(bytearray([buf]))
self.cs(1)
def init_display(self):
"""Initialize display"""
self.rst(1)
self.rst(0)
self.rst(1)
self.write_cmd(0x36);
self.write_data(0x70);
self.write_cmd(0x3A);
self.write_data(0x05);
#ST7735R Frame Rate
self.write_cmd(0xB1);
self.write_data(0x01);
self.write_data(0x2C);
self.write_data(0x2D);
self.write_cmd(0xB2);
self.write_data(0x01);
self.write_data(0x2C);
self.write_data(0x2D);
self.write_cmd(0xB3);
self.write_data(0x01);
self.write_data(0x2C);
self.write_data(0x2D);
self.write_data(0x01);
self.write_data(0x2C);
self.write_data(0x2D);
self.write_cmd(0xB4); #Column inversion
self.write_data(0x07);
#ST7735R Power Sequence
self.write_cmd(0xC0);
self.write_data(0xA2);
self.write_data(0x02);
self.write_data(0x84);
self.write_cmd(0xC1);
self.write_data(0xC5);
self.write_cmd(0xC2);
self.write_data(0x0A);
self.write_data(0x00);
self.write_cmd(0xC3);
self.write_data(0x8A);
self.write_data(0x2A);
self.write_cmd(0xC4);
self.write_data(0x8A);
self.write_data(0xEE);
self.write_cmd(0xC5); #VCOM
self.write_data(0x0E);
#ST7735R Gamma Sequence
self.write_cmd(0xe0);
self.write_data(0x0f);
self.write_data(0x1a);
self.write_data(0x0f);
self.write_data(0x18);
self.write_data(0x2f);
self.write_data(0x28);
self.write_data(0x20);
self.write_data(0x22);
self.write_data(0x1f);
self.write_data(0x1b);
self.write_data(0x23);
self.write_data(0x37);
self.write_data(0x00);
self.write_data(0x07);
self.write_data(0x02);
self.write_data(0x10);
self.write_cmd(0xe1);
self.write_data(0x0f);
self.write_data(0x1b);
self.write_data(0x0f);
self.write_data(0x17);
self.write_data(0x33);
self.write_data(0x2c);
self.write_data(0x29);
self.write_data(0x2e);
self.write_data(0x30);
self.write_data(0x30);
self.write_data(0x39);
self.write_data(0x3f);
self.write_data(0x00);
self.write_data(0x07);
self.write_data(0x03);
self.write_data(0x10);
self.write_cmd(0xF0); #Enable test command
self.write_data(0x01);
self.write_cmd(0xF6); #Disable ram power save mode
self.write_data(0x00);
#sleep out
self.write_cmd(0x11);
#DEV_Delay_ms(120);
#Turn on the LCD display
self.write_cmd(0x29);
def show(self):
self.write_cmd(0x2A)
self.write_data(0x00)
self.write_data(0x01)
self.write_data(0x00)
self.write_data(0xf1)
self.write_cmd(0x2B)
self.write_data(0x00)
self.write_data(0x01)
self.write_data(0x00)
self.write_data(0xf1)
self.write_cmd(0x2C)
self.cs(1)
self.dc(1)
self.cs(0)
self.spi.write(self.buffer)
self.cs(1)
pwm = PWM(Pin(BL))
pwm.freq(1000)
pwm.duty_u16(32768) # max 65535
LCD = LCD_1inch8()
# Background colour is BLACK
LCD.fill(0x0) # BLACK
LCD.show()
# ============= END OF SCREEN DRIVER & SETUP ==================
def colour(R,G,B):
# Get RED value
rp = int(R*31/255) # range 0 to 31
if rp < 0: rp = 0
r = rp *8
# Get Green value - more complicated!
gp = int(G*63/255) # range 0 - 63
if gp < 0: gp = 0
g = 0
if gp & 1: g = g + 8192
if gp & 2: g = g + 16384
if gp & 4: g = g + 32768
if gp & 8: g = g + 1
if gp & 16: g = g + 2
if gp & 32: g = g + 4
# Get BLUE value
bp =int(B*31/255) # range 0 - 31
if bp < 0: bp = 0
b = bp *256
colour = r+g+b
return colour
def ring(cx,cy,r,cc): # Centre (x,y), radius
for angle in range(0, 90, 2): # 0 to 90 degrees in 2s
y3=int(r*math.sin(math.radians(angle)))
x3=int(r*math.cos(math.radians(angle)))
LCD.pixel(cx-x3,cy+y3,cc) # 4 quadrants
LCD.pixel(cx-x3,cy-y3,cc)
LCD.pixel(cx+x3,cy+y3,cc)
LCD.pixel(cx+x3,cy-y3,cc)
#=============== MAIN ============
LCD.rect(1,1,159,128,colour(0,0,255)) # Blue Frame
LCD.text("WaveShare", 38,20,colour(255,0,0))
LCD.text('Pico Display 1.8"', 10,40,colour(255,255,0))
LCD.text("159x128 SPI", 30,60,colour(0,255,0))
LCD.text("WORKOUT", 50,80,colour(255,128,0))
LCD.text("Tony Goodhew", 30,110,colour(100,100,100))
LCD.show()
utime.sleep(6)
LCD.fill(0)
LCD.show()
LCD.rect(1,1,159,128,colour(0,0,255)) # Blue Frame
# White Corners
LCD.pixel(1,1,0xFFFF) # LT
LCD.pixel(1,128,0xFFFF) # LB
LCD.pixel(159,1,0xFFFF) # RT
LCD.pixel(159,128,0xFFFF) # RB
LCD.text("200 Pixels", 40,20,0xFFFF)
LCD.rect(29,49,103,53,colour(0,255,0))
LCD.show()
for i in range (200):
x = random.randint(30, 130)
y = random.randint(50, 100)
LCD.pixel(x,y,0xFFFF)
LCD.show()
utime.sleep(1.5)
LCD.fill(0)
LCD.show()
# Lines
LCD.text("Lines",10,10,colour(200,200,200))
LCD.show()
c = colour(255,0,0)
b = colour(0,0,255)
LCD.vline(1,1,128,c)
LCD.hline(1,128,128,c)
LCD.vline(159,1,128,b)
LCD.hline(159-127,1,128,b)
for i in range(0,127,5):
ii = i +1
LCD.line(1,ii,ii,128,c)
LCD.line(159,128-ii,159-ii,1,b)
utime.sleep(0.03)
LCD.show()
LCD.text("Circles",95,112,colour(200,200,200))
LCD.show()
ring(80,64,47,colour(70,70,70))
ring(80,64,41,colour(100,100,100))
ring(80,64,35,colour(150,150,150))
LCD.show()
ring(80,64,30,colour(255,255,0))
ring(80,64,25,colour(255,0,255))
ring(80,64,20,colour(0,255,255))
LCD.show()
utime.sleep(1)
for r in range(5):
ring(80,64,10+r,colour(255,0,0))
LCD.show()
utime.sleep(1)
for r in range(5):
ring(80,64,5+r,colour(0,255,0))
LCD.show()
utime.sleep(1)
for r in range(5):
ring(80,64,r,colour(0,0,255))
LCD.show()
utime.sleep(2.5)
LCD.fill(0)
LCD.show()
# === Sin & Cos graphs ====
factor = 361 /159
LCD.show()
cr = colour(255,0,0)
LCD.hline(1,60,159,0xFFFF)
LCD.text("Sine", 70, 20, cr)
for x in range(1,159):
y = int ((math.sin(math.radians(x * factor)))* -50) + 60
LCD.pixel(x,y,cr)
LCD.show()
LCD.show()
cg = colour(0,255,0)
LCD.text("Cosine", 5, 90, cg)
for x in range(0,240):
y = int((math.cos(math.radians(x * factor)))* -50) + 60
LCD.pixel(x,y,cg)
LCD.show()
utime.sleep(3)
LCD.fill(0)
LCD.show()
# Text on a Sin wave
msg =' WS Pico Display'
LCD.text("Text on a Sine Curve",1,115,0xFFFF)
factor = 361 /159
for i in range(len(msg)):
y = int ((math.sin(math.radians(i*7 * factor)))* -40) + 40
ch = msg[i]
LCD.text(ch, i*8,y +10,colour(255,255,0))
LCD.show()
utime.sleep(3)
LCD.fill(0)
LCD.show()
# Set up potentiometers
rpot=machine.ADC(28)
gpot=machine.ADC(27)
bpot=machine.ADC(26)
LCD.fill(0)
LCD.show()
LCD.text(" Turn the Pots",20,112,0xFFFF)
LCD.hline(0,127,159,0xFFFF) # Draw edge frame Bottom
LCD.line(0,1,159,1,0xFFFF) # Top
LCD.vline(0,1,127,0xFFFF) # Left
LCD.line(159,0,159,127,0xFFFF) # Right
while True:
# Get RED value
rp = int(rpot.read_u16() / 2000) # range 0 to 31
if rp < 0: rp = 0
if rp > 31: rp = 31
r = rp *8
# Get Green value - more complicated!
gp = int(gpot.read_u16() / 1000) # range 0 - 63
if gp < 0: gp = 0
if gp > 63: gp = 63
g = 0
if gp & 1: g = g + 8192
if gp & 2: g = g + 16384
if gp & 4: g = g + 32768
if gp & 8: g = g + 1
if gp & 16: g = g + 2
if gp & 32: g = g + 4
# Get BLUE value
bp =int(bpot.read_u16() / 2090) # range 0 - 31
if bp < 0: bp = 0
if bp > 31: gp = 31
b = bp *256
colour = r+g+b
LCD.fill_rect(4,20,152,20,colour)
LCD.fill_rect(50,5,80,10,0) # Black out old value
LCD.text(str(hex(colour)),58,7,0xFFFF)
LCD.fill_rect(10,55,140,10,0)
LCD.text(str(rp),10,55,0xF8) # RED
LCD.fill_rect(120,55,25,10,r)
LCD.rect(120,55,25,10,0xAA52) # Grey2 frame
if rp > 0: LCD.fill_rect(35,55,rp*2,10,0x76AD) # GREY
LCD.fill_rect(10,75,140,10,0)
LCD.text(str(gp),10,75,0xE007) # GREEN
LCD.fill_rect(120,75,25,10,g)
LCD.rect(120,75,25,10,0xAA52)
if gp > 0: LCD.fill_rect(35,75,gp,10,0x76AD)
LCD.fill_rect(10,95,140,10,0)
LCD.text(str(bp),10,95,0x1F00) # BLUE
LCD.fill_rect(120,95,25,10,b)
LCD.rect(120,95,25,10,0xAA52)
if bp > 0: LCD.fill_rect(35,95,bp*2,10,0x76AD)
LCD.show()
