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use  /dev/ttyACM0 in linux asUART_COM in win

Former Member

I am a univerity student from China.
use the zynq board to do my graduate design

I find some references in this net
I am studying Training&Videos--->  Introduction to Zynq
Lab experiment 2 now,,the hello_world_0.elf experiment.

now I have one problem.
in Lab02 -Hello_World_14_2_2.pdf. Page 28 .
After configuring in XPS-->export hardware to sdk-->run as-->run configuration.

#######
17. Switch to the STDIO Connection tab.
18. Check the box for Connect STDIO to Console.
19. Select the PORT for the Cypress USB-UART.
20. Set the BAUD Rate to 115200.
#######

my host os is gentoo linux..with ISE 14.4 installed.

in "Run configuration"-->"Xilinx C/C++ elf"-->STDIO connection
,there's no right port to choose ,as there's COM_n in windows_os.The only default choice is JTAG_UART, BAUD_RATE is locked at 9600.

I have compile the linux kernel,,the cypress make a nod in /dev as /dev/ttyACM0,and it's useful before,that equals com_N in win os.But there's no choice.

how to solve the problem?
Will I have to install a windows os to make it work?
Thank you.

  • 0

    Hello double crane.

    Try to install minicom, configure it and start it by typing:

    sudo minicom -D /dev/ttyACM0 -b 115200 -8 -o. This way you should see the output in a terminal shell instead of xilinx sdk console. Hope it helps.

    sticken

    P.s: I don't know if "sudo" is strictly required, but I'm not able to see anything without using it.

  • 0

    you do have a cable besides the jtag attached to the board? to the miniport labeled UART? the board only comes with the one for JTAG and the other for a usb hub to connect peripherals to a running linux. but you can use it on UART with a standard usb cable attached to you host. that's what i did before i got another mini usb cable!

  • 0 in reply to Former Member
    hello,firstly, thank you for your reply.  I did use minicom before and I have set right configurations for zynq. I used minicom when booting the default linux system in SD card.It works as expected.  I could see the output in minicom maybe.But,how can I send the generated elf file to zynq board through UART and make it run? I have tried to echo XX.elf to /dev/ttyACM0,but nothing shows back in minicom.So,it's not the right way using echo.then how?  I've install a XP and xilinx,and do the expeciment second time,yesterday,it works.haha.it's enough now. but I still prefer linux.Hope less problems.  Thank you for advicement. Happy new year,新年快乐!
  • 0 in reply to jamestkennedy

    Thank you for you reply. I do.I have used two mini-USB cables.one for UART and one for program.(The third one is usb-OTG,left) one cable is from zynq,and the other is from my mobile-phone. & I see results as expected in XP yesterday. maybe the xilinx didn't know to find ttyACM,unlike com_n. thank you for your attention. 新年快乐 万事如意!

  • 0
    an hour ago, finnally I solved it.now I can delete windows system.  solved problem--how to do sdk-project-run_configuration-debug-run in linux system  I just mark it in chinese. If anyone love linux meet the same problem, wish this could help  because I'am so lazy,with poor English,So,I don't translate it.  If you can't understand this,try touse google translate or email double_crane@qq.com (or org.doublecrane@gmail.com), you're welcome and please use simple English  本文由EEDC(double_crane)原创 于2013-4-21-早5点摸索成功  1.首先保证两部分的驱动已经安装 (1).cypress-UART driver－－＞在linux内核编译USB-->CDC-ACM 连接上电脑时,出现/dev/ttyACM0,可用minicom  (2).diligent-program driver-->diligent官网下载digilent.adept.runtime_2.10.2-i686.tar.gz和libCseDigilent_2.4.3-i686.tar.gz,按照指示安装  2.打开xsdk工程，右键run_as-->run_configurations  3.在打开的页面，选择下方的工程名+debug,STDIO_Connection,勾Connect STDIO to Console,Port只有JTAG_UART,波特率锁定在9600,apply,run.  4.出现第5步所说的提示框，但是此时先别点，先保证minicom已经打开.观察/ttyACM0.  5.出现提示框,"FPGA configuration is not done on the target.Do you still want to continue launching application?"选择 OK  6.xilinx sdk console下出现"Error opening JTAG UART @ localhost:-1"．但是在minicom里可以看到程序运行回显的内容  完毕  注:程序是通过Promgram口下载进去,需要diligent驱动 输出是在UART显示