树莓派数码管显示日历代码

以下是树莓派数码管显示日历的 Python 代码：

import time
import datetime
import RPi.GPIO as GPIO

# 数码管引脚对应的 GPIO 编号
LED_A = 17
LED_B = 18
LED_C = 27
LED_D = 22
LED_E = 23
LED_F = 24
LED_G = 25
LED_DP = 12

# 数码管数字对应的 GPIO 编号
DIGIT_1 = 5
DIGIT_2 = 6
DIGIT_3 = 13
DIGIT_4 = 19

# 数码管数字编码
DIGIT_CODE = {
    '0': [LED_A, LED_B, LED_C, LED_D, LED_E, LED_F],
    '1': [LED_B, LED_C],
    '2': [LED_A, LED_B, LED_D, LED_E, LED_G],
    '3': [LED_A, LED_B, LED_C, LED_D, LED_G],
    '4': [LED_B, LED_C, LED_F, LED_G],
    '5': [LED_A, LED_C, LED_D, LED_F, LED_G],
    '6': [LED_A, LED_C, LED_D, LED_E, LED_F, LED_G],
    '7': [LED_A, LED_B, LED_C],
    '8': [LED_A, LED_B, LED_C, LED_D, LED_E, LED_F, LED_G],
    '9': [LED_A, LED_B, LED_C, LED_D, LED_F, LED_G],
    '-': [LED_G],
    ' ': []
}

# 数码管显示函数
def display_digit(digit, number):
    GPIO.output(digit, GPIO.HIGH)
    for led in DIGIT_CODE[number]:
        GPIO.output(led, GPIO.LOW)
    time.sleep(0.001)
    GPIO.output(digit, GPIO.LOW)
    for led in DIGIT_CODE[' ']:
        GPIO.output(led, GPIO.HIGH)

# 初始化 GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(LED_A, GPIO.OUT)
GPIO.setup(LED_B, GPIO.OUT)
GPIO.setup(LED_C, GPIO.OUT)
GPIO.setup(LED_D, GPIO.OUT)
GPIO.setup(LED_E, GPIO.OUT)
GPIO.setup(LED_F, GPIO.OUT)
GPIO.setup(LED_G, GPIO.OUT)
GPIO.setup(LED_DP, GPIO.OUT)
GPIO.setup(DIGIT_1, GPIO.OUT)
GPIO.setup(DIGIT_2, GPIO.OUT)
GPIO.setup(DIGIT_3, GPIO.OUT)
GPIO.setup(DIGIT_4, GPIO.OUT)

# 获取当前日期
now = datetime.datetime.now()

# 循环显示日期
while True:
    display_digit(DIGIT_1, str(now.month // 10))
    display_digit(DIGIT_2, str(now.month % 10))
    display_digit(DIGIT_3, str(now.day // 10))
    display_digit(DIGIT_4, str(now.day % 10))
    time.sleep(1)

这段代码可以让树莓派连接到数码管，显示当前的月份和日期。