Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

JTAG stop working

I don't know why the JTAG stoped working ... I'm using Microtronix's Cyclone EP1C20.

When I try to upload to the board, I got these messages :

- inside Nios SDK 5.0.1 Build: 86, uploading the kernel :

------------------------------------------------

Microtronix Linux Extensions

Version 1.4, Built June 20, 2005

------------------------------------------------

06/09/2005 20:44:05 - (INFO) nios2-flash-programmer: Launching Quartus Programmer to download:

D:/Programas/Altera/Nios/components/altera_nios_dev_board_cyclone_1c20/system/altera_nios_dev_board_cyclone_1c20.sof

Error: Can't scan JTAG chain. Error code 87.

06/09/2005 20:44:06 - (SEVERE) nios2-flash-programmer: Unable to download SOF: D:/Programas/Altera/Nios/components/altera_nios_dev_board_cyclone_1c20/system/altera_nios_dev_board_cyclone_1c20.sof, exiting

I have tryed to auto-detect the hardware in the Quartus II Programmer, and it say to me :

Unable to scan device chain. Can't scan JTAG chain.

I dont remember where these showed up too:

Error: Can't access JTAG chain

Error: Operation failed

I dont know what to do. I have tryed to set the jumpers back to the default, as is in Cyclone Data Sheet. Everything seems normal. I can not upload the Kitchen_sink core, because the erros of JTAG smile.gif , so I can't test it.

Any suggestions ??

Regards.

Arthur.

7 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    --- Quote Start ---

    originally posted by arthur@Sep 8 2005, 06:40 AM

    i don't know why the jtag stoped working ... i'm using microtronix's cyclone ep1c20.

    when i try to upload to the board, i got these messages :

    - inside nios sdk 5.0.1 build: 86, uploading the kernel :

    ------------------------------------------------

    microtronix linux extensions

    version 1.4, built june 20, 2005

    ------------------------------------------------

    06/09/2005 20:44:05 - (info) nios2-flash-programmer: launching quartus programmer to download:

    d:/programas/altera/nios/components/altera_nios_dev_board_cyclone_1c20/system/altera_nios_dev_board_cyclone_1c20.sof

    error: can't scan jtag chain. error code 87.

    06/09/2005 20:44:06 - (severe) nios2-flash-programmer: unable to download sof: d:/programas/altera/nios/components/altera_nios_dev_board_cyclone_1c20/system/altera_nios_dev_board_cyclone_1c20.sof, exiting

    i have tryed to auto-detect the hardware in the quartus ii programmer, and it say to me :

    unable to scan device chain. can't scan jtag chain.

    i dont remember where these showed up too:

    error: can't access jtag chain

    error: operation failed

    i dont know what to do. i have tryed to set the jumpers back to the default, as is in cyclone data sheet. everything seems normal. i can not upload the kitchen_sink core, because the erros of jtag smile.gif , so i can't test it.

    any suggestions ??

    regards.

    arthur.

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=9640)

    --- quote end ---

    --- Quote End ---

    I have the same problem on the same Board....!!

    Can you help me
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Hi,

    Maybe, You connect to the wrong ByteBlaster Port. There have two ports in Mtx Cyclone Board, you should connect to ByteBlasterMV(J10).

    Please Check your cable connection first.

    Regards,

    LiangYi
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    --- Quote Start ---

    originally posted by liangyi@Oct 8 2005, 10:42 PM

    hi,

    maybe, you connect to the wrong byteblaster port. there have two ports in mtx cyclone board, you should connect to byteblastermv(j10).

    please check your cable connection first.

    regards,

    liangyi

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=10241)

    --- quote end ---

    --- Quote End ---

    Thanks for your answer, but i connect to the right cable..i have check it many times... I tried to reload the core mtx kitchen sink but dont work..

    do you have another idea
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Hi,

    Can you give me more detailed information about your reloading process ?

    LiangYi
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    --- Quote Start ---

    originally posted by liangyi@Oct 11 2005, 12:57 AM

    hi,

    can you give me more detailed information about your reloading process ?

    liangyi

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=10282)

    --- quote end ---

    --- Quote End ---

    I followed the instructions given in Appendix D the P32 of "Product data sheet.pdf"
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Me,too.

    I always exit NIOS2 IDE(close), and reopen.

    Or, shutdown the board and repower up. It always worked.

    I don&#39;t know why.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Sometimes I run into this problem on my laptop. This seems to happen when I launch Quartus or Eclipse once with my USBblaster connected, then the next time I launch them without having it connected. Before I can use it the next time, I must open Quartus, select the Programmer (under tools), then go to the hardware setup option (top left) and reselect my USBblaster.

    Hope this helps,

    Doug