OpenWrt Forum Archive

Topic: Receiving non-printable ASCII Characters..

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Post #1
chunkychili
22 Jul 2009, 22:08

I have been stumped on this problem for some time now, so I thought I would ask the community.

I have a serial port installed on my WRT54GL, running whiterussian.

The serial port is connected to a barcode reader and everything works fine with printable ASCII characters.

For example: "cat /dev/tts/1" prints the read barcodes.

The problem is when I read a barcode that contains a non-printable ASCII character.

For example, some of my barcodes contain:

0x11 Device Control 1
0x12 Device Control 2
0x1C File Separator
0x1D Group Separator

If I do "hexdump -C /dev/tts/1", for example, It seems some characters are changed, 0x11 to 0x0D, or others are deleted.

Is there a way to configure the serial port to not interpret these commands, and just pass them to /dev/tts/1 as raw data?

Thank You for your time.

~Andrew

Post #2
ajukrishnan
8 Feb 2011, 16:26

Hi,
I am trying to interface the WRT54GL v1.1 serial port with PIC16F877. I am doing the project listed in http://jbprojects.net/projects/wifirobot/
Can you share your code for the microcontroller for serial interfacing? And also how do you read the data on the serial port and send to the PC?

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