• State Resolved
  • Locked Locked
  • Replies 8 replies
  • Subscribers 83 subscribers
  • Views 5610 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Error while executing OnTargetConnect(): Could not read register ST1: target is not connected

Jigar Patel67
Prodigy 80 points
Other Parts Discussed in Thread: TMS320F28335, UNIFLASH

I am using TMS320F28335. I am getting following error, when I try to download program.

C28xx: Unable to determine target status after 20 attempts
C28xx: Failed to remove the debug state from the target before disconnecting. There may still be breakpoint op-codes embedded in program memory. It is recommended that you reset the emulator before you connect and reload your program before you continue debugging
C28xx: GEL: Error while executing OnTargetConnect(): Could not read register ST1: target is not connected
at (ST1&~(0x0100)) [f28335.gel:312]
at C28x_Mode() [f28335.gel:82]
at OnTargetConnect()

If I use Test Conection, it looks like it has valid connection.

following is message with Test Connection Message.

The JTAG DR Integrity scan-test has succeeded.

This morning, my power supply reset during programming. I suspect this is device lock issue. Is there any way to unlock device ? Is there anyway, I can avoid to replace chip.

Is there anyway to stop device lock, even if device reset during programming ?

Regards,

Jigar

 

  • 0
    Intellectual 610 points
    Hi jigar
    Using UNIFLASH try to ERASE the code after erase try to load the code.
  • 0
    Guru 192875 points
    Hi Jigar,

    As you mentioned above that power got interrupted while flashing, if the same happened while erasing the device then there's no way you can get back/ unlock the device.

    Regards,
    Gautam
  • 0 in reply to Gautam Iyer
    Prodigy 80 points

    I was not able to connect to target with multiple laptop and power cycle. I was getting same error message I mention above.

    I tried UNIFLASH multiple time to erase flash, it was not working (All sector was selected to erase).

    Finally I tried to erase only one sector at a time using UNIFLASH, it worked....Now I am able program/erase device using CCS.

    Thank you for reply

  • 0 in reply to Jigar Patel67
    Guru 192875 points
    Sounds very odd! I hope you're able to debug the device now.
  • 0 in reply to Gautam Iyer
    Prodigy 80 points
    Yes I am able to debug device. Does following message suggest device is locked ?

    C28xx: Unable to determine target status after 20 attempts
    C28xx: Failed to remove the debug state from the target before disconnecting. There may still be breakpoint op-codes embedded in program memory. It is recommended that you reset the emulator before you connect and reload your program before you continue debugging
    C28xx: GEL: Error while executing OnTargetConnect(): Could not read register ST1: target is not connected
    at (ST1&~(0x0100)) [f28335.gel:312]
    at C28x_Mode() [f28335.gel:82]
    at OnTargetConnect()
  • 0 in reply to Jigar Patel67
    Guru 192875 points
    Are you still getting this error? This means "Not able to connect to device" as it seems to be busy.
  • 0 in reply to Gautam Iyer
    Prodigy 80 points
    No I am not getting any error, It is working good for me.

    I just want to figure out what happened.
  • 0 in reply to Jigar Patel67
    Guru 192875 points
    Goodluck!

    Regards,
    Gautam