A hardware interface commonly found on older PCs, usually with a 9-pin DE-9 socket/plug, on networking devices or servers also with RJ-45 socket/plug (otherwise commonly used for ethernet), or with a (much wider) 25-pin DB-25 socket/plug. Two common standards used with such an interface are RS-232 ...

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debian does not detect serial PCI card after reboot

I have installed a PCI card with two serial and one parallel port on it. the chipset is MCS9865. I downloaded the latest driver(V1.0.12) from here. I ran make and make install. now the two serial ...
2
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2answers
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How to send data to a serial port and see any answer?

On Linux, I want to send a command string (i.e. some data) to a serial port (containing control characters), and listen to the response (which also usually might contain control characters). How can ...
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2answers
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How to bind USB device under a static name?

I have an arduino which sometimes gets bound to /dev/ttyUSB0 and other times to /dev/ttyUSB1 making my script fail. I do not want to enumerate all the possibilities of where my device could be, but I ...
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1answer
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serial data over ethernet on a linux box

I'm trying to connect a widget (192.168.1.214:20108) through Ethernet (serial to Ethernet) to a Linux box. Under Windows using a virtual device driver mapping I can see the serial data, so I know ...
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5answers
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setserial /dev/ttyS4: Cannot set serial info

So, I have a board with 6 hardware serial ports: the first 2 on the ETX bus and the last 4 on the ISA bus. The following configuration is how it is supposed to be: /dev/ttyS0 port 0x03F8 irq 4 ...
6
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2answers
726 views

My process was killed but I cannot understand the kernel notice

I have a custom application running on an embedded x86 setup (built using buildroot and uClibc). The application has been running fine but this morning when I returned to work I discovered my process ...
4
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2answers
2k views

How can I listen to communication between a process and a serial port?

On a Gentoo Linux machine, a process is communicating with another computer via serial port (/dev/ttyS1). I want to listen to this communication (i.e. what is being sent/received by the process) ...
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votes
3answers
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Why does awk do full buffering when reading from a pipe

I'm reading from a serial port connected to a gps device sending nmea strings. A simplified invocation to illustrate my point: $ awk '{ print $0 }' /dev/ttyPSC9 ...
3
votes
1answer
18k views

How do I access a USB serial port without an entry in /dev?

I have a USB to serial adapter based on the SiLabs CP2101 chipset. I'm trying to use it with Debian 5.0 Lenny (armel architecture). I seem to be able to get the proper kernel module to recognize the ...
2
votes
4answers
17k views

PuTTY can access serial port as /dev/ttyUSB0, but not as named udev device

I have multiple USB-to-serial converters. I need to access one of them in particular. I'm using a udev rule to give it a special name. I have rebooted since I last modified it. SUBSYSTEM=="usb", ...
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1answer
104 views

problem with U-boot while flashing Linux in sd-card

Please help as it is immense necessary for a project which is to be evaluated coming week. Also, I am very new to this and unable to find help from existing contents available on the Internet. While ...