#!/usr/bin/env python # encoding: utf-8 import RPi.GPIO as GPIO import time DIN = 12 CS = 16 CLK = 18 GPIO.setmode(GPIO.BOARD) GPIO.setup(DIN,GPIO.OUT) GPIO.setup(CS,GPIO.OUT) GPIO.setup(CLK,GPIO.OUT) buffer0 = ['00011100','00100010','00100010','00100010','00100010','00100010','00100010','00011100'] #0 buffer1 = ['00011000','00001000','00001000','00001000','00001000','00001000','00001000','00011100'] #1 buffer2 = ['00011100','00100010','00100010','00000100','00001000','00010000','00100000','00111110'] #2 buffer3 = ['00011100','00100010','00000010','00001100','00000010','00000010','00100010','00011100'] #3 buffer4 = ['00000100','00001100','00010100','00100100','01000100','01111110','00000100','00000100'] #4 buffer5 = ['00111110','00100000','00100000','00111100','00000010','00000010','00100010','00011100'] #5 buffer6 = ['00011100','00100010','00100000','00111100','00100010','00100010','00100010','00011100'] #6 buffer7 = ['00111110','00100100','00000100','00001000','00001000','00001000','00001000','00001000'] #7 buffer8 = ['00011100','00100010','00100010','00011100','00100010','00100010','00100010','00011100'] #8 buffer9 = ['00011100','00100010','00100010','00100010','00011110','00000010','00100010','00011100'] #9 buffer = [buffer0,buffer1,buffer2,buffer3,buffer4,buffer5,buffer6,buffer7,buffer8,buffer9] def send(byteData): for bit in range(0,8): if(byteData & 0x80): GPIO.output(DIN,True) else: GPIO.output(DIN,False) byteData = byteData<<1 GPIO.output(CLK,True) GPIO.output(CLK,False) def writeWord(addr,num): GPIO.output(CS,True) GPIO.output(CS,False) GPIO.output(CLK,False) send(addr) send(num) GPIO.output(CS,True) def wt(index): for i in range(0,8): writeWord(i+1,int(buffer[index][i],2)) def initData(): writeWord(0x09,0x00) writeWord(0x0a,0x03) writeWord(0x0b,0x07) writeWord(0x0c,0x01) writeWord(0xff,0x00) try: initData() for i in range(0,10): wt(i) time.sleep(1) except KeyboardInterrupt: pass #time.sleep(2) GPIO.cleanup()
树莓派 - MAX7219(数字倒计时) - python
写了个倒计时
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转载自iaiai.iteye.com/blog/2412152
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