А вот первый этап — зажигание одиночного пиксела в заданных координатах
# -*- coding: utf-8 -*-
"""
Minimum example for basic control of a HUB75 LED matrix (Evosson 64x32 8 Scan), ESP32S2
protoauthor: mada
author: AstraLab
version: 2025-03-06
"""
## system modules
import time
from machine import Pin
##*****************************************************************************
print(">>>> Setting pin definitions for HUB75 connector ...")
R1 = Pin(5, Pin.OUT)
G1 = Pin(12, Pin.OUT)
B1 = Pin(11, Pin.OUT)
R2 = Pin(40, Pin.OUT)
G2 = Pin(39, Pin.OUT)
B2 = Pin(38, Pin.OUT)
#E = Pin(4, Pin.OUT)
A = Pin(37, Pin.OUT)
B = Pin(36, Pin.OUT)
C = Pin(35, Pin.OUT)
#D = Pin(33, Pin.OUT)
CLK = Pin(34, Pin.OUT)
LAT = Pin(16, Pin.OUT)
OE = Pin(21, Pin.OUT)
===========================================================================
def setrow(row):
A.value(row % 2)
B.value((row // 2) % 2)
C.value((row // 4) % 2)
def reset():
# Initialize all pins as low; disable output.
print(">>>> Reset color and row select pins ...")
R1.value(0)
R2.value(0)
G1.value(0)
G2.value(0)
B1.value(0)
B2.value(0)
A.value(0)
B.value(0)
C.value(0)
#D.value(0)
#E.value(0)
OE.value(0) # enable output
#OE.value(1) # disable output
CLK.value(0)
LAT.value(0)
for strk in range(0,8): # пробегаем по всем 8 адресам строк
setrow(strk) # и смотрим какие светодиодики загорятся
time.sleep(0.1) # это дебаг функция, помогающая разобраться
def set_color(rgb1, rgb2):
'''
Define the function to update the LED matrix.
Parameters
----------
rgb1 : TOP PART
rgb2 : BOTTOM PART
------
'''
R1.value(rgb1[0])
G1.value(rgb1[1])
B1.value(rgb1[2])
R2.value(rgb2[0])
G2.value(rgb2[1])
B2.value(rgb2[2])
## 1)
'''
https://www.bigmessowires.com/2018/05/24/64-x-32-led-matrix-programming/
1. Begin with OE, CLK, and LAT low.
2. Initialize a private row counter N to 0.
3. Set R1,G1,B1 to the desired color for row N, column 0.
4. Set R2,G2,B2 to the desired color for row HEIGHT/2+N, column 0.
5. Set CLK high, then low, to shift in the color bit.
6. Repeat steps 3-5 WIDTH times for the remaining columns.
7. Set OE high to disable the LEDs.
8. Set LAT high, then low, to load the shift register contents into the LED outputs.
9. Set ABC (or ABCD) to the current row number N.
10. Set OE low to re-enable the LEDs.
11. Increment the row counter N.
12. Repeat steps 3-11 HEIGHT/2 times for the remaining rows.
##-----------------------------------------------------------------------------
## 2)
(https://www.sparkfun.com/news/2650
For each row of pixels, we repeat the following cycle of steps:
1. Clock in the data for the current row one bit at a time
2. Pull the latch and output enable pins high. This enables the latch,
allowing the row data to reach the output driver but it also disables the output
so that no LEDs are lit while we're switching rows.
3. Switch rows by driving the appropriate row select lines.
4. Pull the latch and output enable pins low again, enabling the output and
closing the latch so we can clock in the next row of data.
'''
X = 64 # col
Y =32 # row Ноль сверху
def cls(): # Clear Screen забиваем всё нулями
for row in range(0,Y):
for col in range(0,X):
set_color((0,0,0), (0,0,0))
CLK.value(1)
CLK.value(0)
#print('ctolbec', col)
def setx(x):
d4=x//4
mn=d4*4
xx=x+mn+4
d8=row//8
p4=d8*4
for i in range(X*2-xx+p4-1):
CLK.value(1)
CLK.value(0)
print(i, mn)
LAT.value(1)
OE.value(1)
LAT.value(0)
OE.value(0)
#time.sleep(0.01)
reset()
cls()
X = 64 # col Физический Размер Х, ширина
Y =32 # row Размер У, высота. Считается, что Ноль сверху
row = 4
setrow(row) # Укажем строку, с которой собираемся работать
set_color((1,1,1), (1,1,0)) # пускай верхняя половина горит белым, нижняя - жёлтым
CLK.value(1) # щелкнем клоком
CLK.value(0) # при этом биты из ЕSP32 зайдут в матрицу
set_color((0,0,0), (0,0,0)) # все следующие биты = 0, чтобы по сдвиговым регистрам протолкнуть
# только одну белую и одну желтую точку, а не рисовать 4 линии
setx(31) # двигаем точки с 64й до 31й позиции Х
## 2) Pull the latch and output enable pins high.
## This enables the latch, allowing the row data to reach the output driver
## but it also disables the output so that no LEDs are lit while we're switching rows.
LAT.value(1)
OE.value(1)
print('A', A.value())
print('B', B.value())
print('C', C.value())
## 4) Pull the latch and output enable pins low again,
## enabling the output and closing the latch
## so we can clock in the next row of data.
LAT.value(0)
OE.value(0)
##-----------------------------------------------------------------------------
print("\n<<<< Done.\n")
