#动手做4—3 四位共阳极数码管动态显示00:00
from machine import Pin
from time import sleep

#显示驻留时间:秒	
dtime=0.001

#定义段码管脚	
seg_a = Pin(28,Pin.OUT)	
seg_b = Pin(27,Pin.OUT)	
seg_c = Pin(26,Pin.OUT)	
seg_d = Pin(22,Pin.OUT)	
seg_e = Pin(21,Pin.OUT)	
seg_f = Pin(20,Pin.OUT)	
seg_g = Pin(19,Pin.OUT)	
dp= Pin(18,Pin.OUT)	
seg_all = [seg_a, seg_b, seg_c, seg_d, seg_e, seg_f, seg_g, dp]

#定义共阳极Anode字形码
num={
    0:[0,0,0,0,0,0,1,1],	
    1:[1,0,0,1,1,1,1,1],
    2:[0,0,1,0,0,1,0,1],
    3:[0,0,0,0,1,1,0,1],
    4:[1,0,0,1,1,0,0,1],
    5:[0,1,0,0,1,0,0,1],	
    6:[0,1,0,0,0,0,0,1],
    7:[0,0,0,1,1,1,1,1],	
    8:[0,0,0,0,0,0,0,1],	
    9:[0,0,0,0,1,0,0,1]	
}
#定义数码管位码管脚
dig_1=Pin(0,Pin.OUT)	#千位	
dig_2=Pin(1,Pin.OUT)	#百位	
dig_3=Pin(2,Pin.OUT)	#十位	
dig_4=Pin(3,Pin.OUT)	#个位	
dig_all=[dig_1,dig_2,dig_3,dig_4]

#在(cs+1)位显示数字n:cs,0~3;n,0~9
def display(cs,n):
    for seg in seg_all: seg.value(1)	#段码置1	
    for i in dig_all:   i.value(0)	    #位码置	
    dig_all[cs].value(1)	            #选择dig_1	

    for seg in seg_all:	                #显示数字0	
        i=seg_all.index(seg) 
        seg.value(num[n][i]) 
    sleep(dtime)

#显示00:00 
second =0       #秒计数
minute=0        #分计数
while True:
    second +=1
    display(3,second%10)    #个位dig-4
    display(2,second//10)   #个位dig-3
    display(1,minute%10)    #个位dig-2
    display(0,minute//10)   #个位dig-1
    sleep(0.075)            #定时
    if second==59:
        second=0
        minute+=1           #分加一
        if minute==23:
            minute=0
            second=0