CCS/TM4C123GH6PM: Unable to initialized target - 0

Hello Vikas

When you connect the LaunchPad to the PC, does it enumerate correctly showing an ICDI and CDC class device in the windows manager?

Hello Amit

I checked Drivers are working,

Hello Vikas

I hope that you have followed the steps to unlock as specified in the following application note

www.ti.com/.../spma075.pdf

I do not see any reason why the device should not respond unless the device is damaged (either IOs or some internal power circuit). The above application note also provides some debug steps if the board is a custom board (Even though you have an EK-TM4C123GXL, I would suggest checking the same)

Hello Amit

I do not have a XDS100v2 prob
I Tried with LM flash programmer utility,

The device is detected properly, So Is it Damaged?

I got another strange Problem with another machine where i had used 6 EK-TM4C123GXL Board with RS485 interfaced, I am controlling the machine via UART with 9 BOOST DRV 8711 bipolar stepper motor Driver,

Since the Machine is Working for last 4 months and suddenly stop in the Run mode and Showing that "Device is not detected"


1. Green LED is ON,
2. TM4C123GXL Board is not heating Up,
3. I checked Power Supply on board 3.3v and 5v is Ok (ALL devices are powered via USB not by external supply)
4. this happening for 2 board for this machine,


please revert ASAP


Thanks & Regards

Hello Vikas,

I cannot say for sure what would be the cause based on the explanation your provided. Since you are using RS485 and stepper motor drive, the only thing that I may suspect is the possibility of high voltage damage to the device over extended period. Can you confirm that the IOs are never subjected to more than 3.3V.

Hello Amit Ashara

The IOs are never get more than 3.3v, For stepper motors are working on 24v supply i.e limited to BOOST DRV 8711 Driver and TM4C123g is supplied by USB power and all other drivers are working at 3.3v supply,
Since it worked for 3 months and suddenly get stop, what will be possible issues?

Can You tell me what are the possible way to Check board at hardware side(Hardware level analysis)

Hello Amit
I do not have a XDS100v2 prob,
I tried debug port Unlocking with a LM flash Programmer utility,

while unlocking at final stage Unlock it shows error msg "Unable to initialized target - 1"

while programming it shows error msg "Unable to initialized target - 0"

what is difference between "Unable to initialized target - 0" & "Unable to initialized target - 1"

Thank & Regards.

Hello Amit,

Our Project is completely held up , everything is get stalled,

What happening while debug port unlock with these error msg "Unable to initialized target - 1"

Hi,
It is possible to have a problem with USB drivers, there are too many opened and hidden. You can try to remove them as follows:
1) Run cmd.exe as administrator;
2) Change the path to c:\windows\system32 and type the following:
set devmgr_show_nonpresent_devices=1
3) Type this:
start devmgmt.msc
4) Go to Device Manager, open it and in View menu, click on the left
of item "Show hidden devices".
5) You will see a lot of drivers installed, the hidden ones are grayed out.
Select and remove all hidden.
6) Close Device Manager
7) Type "exit" at command prompt

There are users reporting as much as 200 hidden devices.
This answer was done also on this site - I did not found the link.
Keep in mind to use always the same physical port for the same device to avoid creating new ones and limit the number of devices used.

Hello Vikas

The drivers are OK, so I would be led to believe that the ICDI device is working as expected, but something on the main MCU is not functional. Please note that EK-TM4C123GXL is an evaluation board, not meant for full projects (TI liability clause in the user manual).

Did you check if the VDDC is 1.2V for the main MCU?

Hello Amit,

I checked  VDDC is 1.2v for 2 boards and for other boards it is 0.9v

is the damaged for 0.9v VDDC supplied boards

Hello Amit,

I check VDDC is 1.2V for 2 boards and for Others VDDC is 0.9v

Hello Amit,

I check VDDC is 1.2V for 2 boards and for Others VDDC is 0.9v

Hello Vikas

It must not be 0.9V unless you are using low power mode in your application. Even then Unlock Sequence should still work.

Also if you press Reset the VDDC must come to 1.2V while the reset is still pressed.