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Cannot enter Debug Mode

Note: This was originally posted on 5th April 2011 at http://forums.arm.com

Hi

when downloading to the LM3s8933 microcontroler i get this message "Cannot enter Debug Mode"
is any one know whats the problem.

best regards.

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Joseph Yiu over 12 years ago

Note: This was originally posted on 6th April 2011 at http://forums.arm.com

It might be that your program contains incorrect I/O pin settings which block the JTAG debug connection, or incorrect PLL settings.

On the TI website there is a flash utility:
http://focus.ti.com/docs/toolsw/folders/print/lmflashprogrammer.html

I don't know if you can use this to erase the flash.

On TI website there is also a forum for Stellaris devices:
http://e2e.ti.com/support/microcontrollers/stellaris_arm_cortex-m3_microcontroller/f/default.aspx

You could post your question there to see if there is other suggestions from TI staffs.

regards,
Joseph
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Joseph Yiu over 12 years ago

Note: This was originally posted on 6th April 2011 at http://forums.arm.com

It might be that your program contains incorrect I/O pin settings which block the JTAG debug connection, or incorrect PLL settings.

On the TI website there is a flash utility:
http://focus.ti.com/docs/toolsw/folders/print/lmflashprogrammer.html

I don't know if you can use this to erase the flash.

On TI website there is also a forum for Stellaris devices:
http://e2e.ti.com/support/microcontrollers/stellaris_arm_cortex-m3_microcontroller/f/default.aspx

You could post your question there to see if there is other suggestions from TI staffs.

regards,
Joseph
Cancel
Vote up 0 Vote down

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