2014-11-08 87 views
0

我在通过python cgi程序与串口通信时遇到问题。我在html中有两个按钮来控制两个LED(LED1,LED2)。Python CGI与串口通信

<html> 
<h1>Test Page 2</h1> 
<form name="input" action="/cgi-bin/myscript-2.py" method="get"> 
<input type="submit" value="LED1" name="Submit"> 
<input type="submit" value="LED2" name="Submit1"> 
</form> 
</html> 

现在我的Python程序从这里接收结果

#!/usr/bin/python 
import cgi 
import cgitb; 
import serial 
form = cgi.FieldStorage() 
cgitb.enable() 
port = "/dev/ttyACM0" 
ser = serial.Serial(port, 9600, timeout=0) 
if "LED1" in form: 
    ser.write("hello") 
elif "LED2" in form: 
    ser.write("hello") 
else: 
    print "Couldn't determine which button was pressed." 

我总是让想不出确定button.The Apache的错误日志是这样

[Sat Nov 08 12:41:41.579738 2014] [cgid:error] [pid 1080:tid 3004140352] [client 127.0.0.1:48698] malformed header from script 'myscript-2.py': Bad header: Couldn't determine which butto, referer: http://localhost/page2.html 
+0

当您的代码包含“无法确定哪个按钮被按下”时,您是否真的得到了错误消息“无法确定哪个按钮”(最后没有“n”)? – 2014-11-08 21:12:18

+1

另外,你有没有尝试简单地打印“表格”?价值最终成为什么? – 2014-11-08 21:13:01

回答