以下脚本有效。我试图评论正在发生的事情,以及我想要改变的事情。我没有依赖于在Raspberry Pi的PiFace输入/输出板上按下按钮,而是每次循环结束时都希望它是一定时间(即下午5:00)并继续写入文件。
之前我发布了类似的内容,但我不相信我很清楚我的意图。据我所知,cron不适合这样的事情。
这将在Raspberry Pi上运行,因此不是那么多的计算能力,但它将是唯一运行的东西。我想用这个来收集数据,每天一次。代码如下:
编辑:我将向Pi添加一个RTC。确定所有这一切只是保持正确的时间而不是真正改变其他任何东西..# run infinite
while(True):
# stopping condition, change to true to exit the next infinite loop
done = False;
#
# Main program
#
while(not done):
# go through the list of each button and see if each is pressed
for element in range(8) :
#Code
#Continuously check if a button is pressed on Piface
#Do things
#Count how long they were pressed
#stopping condition as of right now
#when the 7th input on Piface is hit it ends the loop
if (pfio.digital_read(7) == 1) :
done = True
#this works great, except for that I want it to automatically continue
#with the script and write the results to a file once every
#24 hours
#makes sure that my file doesnt overwrite itself if I hold the button down
while(pfio.digital_read(7)==1):
pass
outputFile = open('lights.csv', 'w')
for i in range(len(button_array)):
#Convert the button's time_on variable to a string and append a comma and newline.
outputFile.write(str(button_array[i].total_time_on) + ',\n')
outputFile.close()