Dev/ttys2 Input/output Error
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Tty Input/output Error
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Cat /dev/ttys0 Input/output Error
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Linux Serial Port
vote favorite I created infrared receiver as in LIRC manual (http://www.lirc.org/receivers.html). And tested it on windows using program called Terminal. When I switched on RTS pin DCD pin was also switched on and when I used remote controll DCD was blinking. So everything works with hardware. Next I tried using the same hardware on Linux Mint 17 on same computer as in http://lifehacker.com/5527752/control-your-desktop-pc-with-a-remote-using-lirc but with no luck: piotrek-H87-HD3 piotrek # cat /dev/ttyS0 cat: /dev/ttyS0: Input/output error I also followed http://www.commandlinefu.com/commands/view/10218/ttys0-terminal-on-serial-connection. In this tutorial there was the same error I had so I tried looking in BIOS setup but serial ports were enabled. Why isin't it working? Some information data: piotrek-H87-HD3 piotrek # cat /proc/tty/driver/serial serinfo:1.0 driver revision: 0: uart:16550A port:000003F8 irq:4 tx:0 rx:0 1: uart:unknown port:000002F8 irq:3 2: uart:unknown port:000003E8 irq:4 3: uart:unknown port:000002E8 irq:3 4: uart:16550A port:0000F080 irq:19 tx:34 rx:0 CTS|DSR|CD 5: uart:unknown port:00000000 irq:0 6: uart:unknown port:00000000 irq:0 7: uart:unknown port:00000000 irq:0 8: uart:unknown
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings minicom and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; http://unix.stackexchange.com/questions/192075/cat-dev-ttys0-input-output-error it only takes a minute: Sign up Serial port /dev/ttyS0 and ttys* input output error up vote 0 down vote favorite I'm new to this kind of things so I need help from you guys. When playing around with serial ports, I figured why not echo from one terminal and cat/listen from the other using one of the /dev/ttyS* serial http://stackoverflow.com/questions/31908335/serial-port-dev-ttys0-and-ttys-input-output-error ports on my ubuntu 15.04 laptop. When i do cat /dev/ttyS0 it gives me input output error. then i tried doing it using pyserial on python. when i do import serial ser = serial.Serial('/dev/ttyS0') it gives me SerialException: Could not configure port: (5, 'Input/output error') After looking around on stack overflow, I found this related post Pyserial: could not configure port: (5, 'Input/output error) where one of the guy said you need a physical connection to make this happen. I'm guessing that is to create some kind of loop. So my question is what kind of physical connection is required? Who a usb stick do it, or do i need something dedicated to work with the serial port. And if someone would provide good explanation on how serial port programming works, that would be great. Feel free to edit the question where you see fit. Guys please no need to complain about how dumb this question sounds and all that. After all lots of people come here to learn, and that is what i am doing py
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work correctly without it enabled. Please turn JavaScript back on and reload this page. Please enter a title. You can not post a blank message. Please type your message and try again. More discussions in Intel® Galileo All PlacesSupport CommunityIntel® Galileo 7 Replies Latest reply on Nov 28, 2014 3:20 PM by tmalheiro Galileo Gen2 ttyS0 Input/output error tmalheiro Nov 26, 2014 6:00 PM Dear all,I am trying to develop an application which requires a serial connection. I was trying to use ttyS0, which maps to IO0 and IO1, but with no success.I do the open with success, nevertheless, trying to use it returns error.errno is 5 and strerror() returns Input/output error.below you can check the code:int main(){ struct termios tio; memset(&tio,0,sizeof(tio)); tio.c_iflag=0; tio.c_oflag=0; tio.c_cflag=CS8|CREAD|CLOCAL; // 8n1 tio.c_lflag=0; tio.c_cc[VMIN]=1; tio.c_cc[VTIME]=5; screenfd = open("/dev/ttyS0", O_RDWR); if(screenfd == -1) { printf("Could not open the ttyS0: %s\n",strerror(errno)); return -1; } cfsetospeed(&tio,B115200); // 115200 baud cfsetispeed(&tio,B115200); // 115200 baud int ret = tcsetattr(screenfd,TCSANOW,&tio); if ( ret != 0) { printf("Error %d from tcsetattr: %s", errno,strerror(errno) ); } close(screenfd); return 0;}Removing the termios setup and just opening the device and writing falls back to the same error.The same code works fine on ubuntu 12.04, but fails when cross compiled to galileo.to the build environment I have followed the intel doc Quark_BSP_BuildandSWUserGuide_329687_006.I have also followed How to program UART serial from Linux on Galileo Gen 2? with no success, performing # stty -F /dev/ttyS0 9600 returns the same error.Doing,root@clanton:~# echo -n "hello" >/dev/ttyS0-sh: echo: write error: Input/output errorany ideas?Kind regards,tiago 722Views Categories: BSP & Yocto Linux, Hardware & Shields, Installation, Drivers, & Setup, Software and Libraries Tags: none (add) uartContent tagged with uart, yoctoContent tagged with yocto, galileo gen2Content tagged with galileo gen2 This content has been marked as final. Show 7 replies 1. Re: Galileo Gen2 ttyS0 Input/output error Intel_Peter Nov 27, 2014 8:30 AM (in response to tmalheiro) Hello tmalheiro,What compiler are you using to compile that code? What firmware are you using? What image are you using? And, could you please attach a picture showing us what happens when you try to use the