Sample SPI MAX7219 8x8 LED Matrix

• MAX7219 8x8 LED Matrix displays character, alphabet and line.

• Example of RA4M1 Clicker:

import time
import max7219
from machine import Pin, SPI
spi= SPI(1)
cs= Pin.cpu.P103
cs.init(cs.OUT, True)
display = max7219.Matrix8x8(spi, cs, 1)
# “1”を座標(0,0)でカラー1で描画
display.text("1",0,0,1)
display.show()
# 消去後、”A”を座標(0,0)にカラー1で描画
time.sleep(1)
display.fill(0)
display.show()
display.text("A",0,0,1)
display.show()
#消去後、縦線、横線をカラー1で描画
time.sleep(1)
display.fill(0)
display.hline(0,4,8,1)
display.vline(4,0,8,1)
display.show()

• If import max7219 causes an error, you need to upload the max7219.py module file to the target board.

• For EK-RA6M2, connect as followings:

  MAX7219-PIN	EK-RA6M2-PIN
  CLK	P102
  CS	P103
  DIN	P101
  GND	GND
  VCC	3.3V

• For RA4M1 Clicker, connect as followings:

  MAX7219-PIN	RA4M1 Clicker-PIN
  CLK	P102
  CS	P103
  DIN	P101
  GND	GND
  VCC	3.3V