Why I need to emphasized the web module.
Because when I used the code just communicate with terminal
import serial
import time
ser = serial.Serial('COM3', 9600, timeout=0)
var = raw_input("Enter something: ")
ser.write(var)
while 1:
try:
print ser.readline()
time.sleep(1)
except ser.SerialTimeoutException:
print('Data could not be read')
It can works fine and output the humidity data.
But when I use another sketch with GET/POST the data by web it will output
could not open port 'COM3': WindowsError(5, 'Access is denied')
On the web
import serial
import web
ser = serial.Serial('COM3', 9600, timeout=10)
urls = (
'/', 'index',
)
class index:
def GET(self):
return "Hello , World!!"
if __name__ == "__main__":
app = web.application(urls, globals())
app.run()
And I got in localhost:8080 the Traceback
C:\Python27\lib\site-packages\serial\serialwin32.py in open
raise SerialException("could not open port {!r}: {!r}".format(self.portstr, ctypes.WinError())) ...
C:\Python27\lib\site-packages\serial\serialutil.py in __init__
self.open() ...
C:\Python27\lib\site-packages\serial\serialwin32.py in __init__
super(Serial, self).__init__(*args, **kwargs)
C:\Users\linda\about paper\raw\web_2.py in <module>
ser = serial.Serial('COM3', 9600, timeout=10)
If I commented the code on line 4
ser = serial.Serial('COM3', 9600, timeout=10)
It works and output "hello world", but I need to get the data on Arduino sensor.
I have try to use the super user for chrome and terminal, I still have some problem.
And somebody told maybe is terminal use the port, but if didn't use terminal to open Python how can I use it. I have tried multiple variations of this, but none of them seem to work. Any ideas?
