Micropython library for a 8 digits 7-segment display based on the MAX7219.
Thanks to https://github.com/adafruit/micropython-adafruit-max7219 for getting me started.
| ESP8266 | MAX7219 |
|---|---|
| HMOSI (GPIO13) | DIN |
| HSCLK (GPIO14) | CLK |
| I/O (GPIO15) | CS |
The I/0 pin can be moved to any other pin.
I'm using the hardware SPI, but it can be moved to any other pin using the software SPI.
from machine import Pin, SPI
import max7219
hspi = SPI(1, baudrate=10000000, polarity=0, phase=0)
display = max7219.Max7219(hspi, Pin(15))
display.clear()
display.write_hex(0xAB9F)