TM4C123GH6PM: Error connecting to the target: Unable to communicate with the device. Please check your connection.

Mustafa Mahgoub

Part Number: TM4C123GH6PM
Other Parts Discussed in Thread: UNIFLASH

Hello ,I have problem with my TM4C123GH6PM and i hope that anyone can help me.

i was uploading a simple code to the board using debugger option from CCS and by mistake the USB was unplugged from my laptop while it was uploading , After that the Board isn`t detected at all by any computer and i can't use it .

i tried to unlock JTAG Lock using (LM flash programmer/UNIFLASH) and it gives me an error , as i think that is because the board isn't detected.

i tried another TM4C123GH6PM and it is working normally , so the problem is from the board not from my laptop or the usb.

i don't know if this will help with something but i guess when it was unplugged CCS was (executing startup script (CORTEX M4)) .

so please can anyone help .

12 months ago

0 Charles Tsai 12 months ago

TI__Guru**** 184346 points

Hi,

Can you show the Windows Device manager? Do you see Stellaris In Circuit Debug Interface? If not, the firmware running on the debug IC might be corrupted.

0 Mustafa Mahgoub 12 months ago in reply to Charles Tsai

Prodigy 10 points

No, it isn't detected.

so what should i do with this firmware corruption?

thanks for your concern.

0 Charles Tsai 12 months ago in reply to Mustafa Mahgoub

TI__Guru**** 184346 points

Hi,

Sorry for the delayed response as I'm currently on vacation. You can try using LM flash programmer and do an ICDI update and hopefully it should restore the firmware to the LaunchPad debug probe.