On Wed, Nov 05, 2014 at 12:11:00PM +0800, Batdelger.O wrote:
>
> Thank you for your quick response.
> It's just simple python code. I'm not sure if flow control is correct. I
> also used gtkterm and tried by every option. I'm new at usbserial devices.
> How to know how should it be?
>
> import time
> import serial
> import sys
>
> ser = serial.Serial(
> port='/dev/ttyUSB0',
> baudrate=4800,
> parity=serial.PARITY_ODD,
> stopbits=serial.STOPBITS_ONE,
> bytesize=serial.EIGHTBITS,
> # timeout=0
That's a slow baud rate, do you mean that slow?
> )
>
> # RTS 0 DTR 1. not sure it's correct one. I tried by reverse.
> ser.setRTS(False)
> ser.setDTR(True)
Does your device support hardware flow control?
>
>
> print ser.isOpen()
>
> ON="\x1B\x5D"
> ser.write(ON)
> ser.flushOutput()
> print "after write"
> # read = ser.read()
> # sys.stdout.write("RECEIVED:" + read + "\n")
> ser.close()
Try using minicom to see if you can properly connect to your device
first, before trying to write your own code from "scratch", to determine
that the device works.
greg k-h
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