拿到香蕉派pro,為了熟悉樹莓派的系統和python控制gpio,寫個跑馬燈玩玩。
1、sudo apt-get update
2、sudo apt-get install python-dev
3、按github安裝香蕉派pro的rpi.gpio
4、香蕉派pro**,6個二極體閃爍三次後,開始跑馬燈,執行兩次後,再次閃爍三次。
import rpi.gpio as gpio
import time
# 宣告針腳
pin_8 = 8
pin_10 = 10
pin_11 = 11
pin_13 = 13
pin_15 = 15
pin_31 = 31
# 電源長接,所以針腳低電平,燈點亮
myflag = 0
mytime = 1
gpio.setmode(gpio.board)
arr = (pin_11, pin_13, pin_15, pin_31, pin_8, pin_10);
for pin in arr:
gpio.setup(pin, gpio.out)
# 所有燈滅
for pin in arr:
gpio.output(pin, 1)
i = 0;
while true:
if i % 2 == 0:
for num in range(0, 3):
for pin in arr:
gpio.output(pin, 0)
time.sleep(0.4);
for pin in arr:
gpio.output(pin, 1)
time.sleep(0.4);
time.sleep(1);
for pin in arr:
gpio.output(pin, myflag)
for otherpin in arr:
if pin != otherpin:
gpio.output(otherpin, not myflag)
time.sleep(mytime)
i = i+1
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