Writing more than 8kB with LM flash programmer

Jasper Smit

Other Parts Discussed in Thread: TM4C1292NCPDT, LMFLASHPROGRAMMER, TM4C123GH6PM

Dear,

At our project, we are trying to program a TM4C1292NCPDT with a tiva launchpad tm4c123gxl. This has worked every time except for when the bin file we are trying to program is larger than exactly 8192 bytes (0x2000). I think this is very strange behaviour because the mcu should have 1MiB (0x00100000) flash.

I have tried program address offsets, but the result is the same :

It fails at around 70%, then says **ERROR**: Programming error 0x1. Then when checking the flash against the bin file the verify fails exactly 0x2000 after the program address offset.

Using SWD instead of JTAG makes no difference.

Could it be the ICDI of the launchpad that fails?

I also have tried 'unlocking the debug port' for tm4c129 classes, but that also fails with the following error: **ERROR** failed to unlock connected device!

Thank you in advance,

Jasper

over 9 years ago

0 Amit Ashara over 9 years ago

TI__Guru**** 244400 points

Hello Jasper,

There are applications in TivaWare which use almost 250KB of flash and we have not seen a download issue. What are the settings applied on the LMFlashProgrammer for erase and program?

Regards
Amit

0 Jasper Smit over 9 years ago in reply to Amit Ashara

Prodigy 50 points

The settings I applied are:

Configuration:

Quick set: Manual configuration
Interface: ICDI (Eval Board)
Port: JTAG
Speed: 500000
Clock Soure: Using the selected crystal value: 16MHz

Program:

Select .bin file > my bin file
Erase entire flash (check)
Verify after program (check)
Reset MCU after program (check)
Program address offset 0x0

I tried different settings like SWD, different clock source etc., but that didn't help.

0 Jasper Smit over 9 years ago in reply to Amit Ashara

Prodigy 50 points

I just tried programming the tm4c123gh6pm on launchpad itself (so no external debugging) with the standard free rtos demo (freertos_demo), of which the binary is 8184 bytes large. This programs just fine, as expected. Adding a useless array to the program resulted in a size of 8200 bytes, which caused an error in the programming of the mcu.
I must be definitely missing something, I just can't see what.

0 Amit Ashara over 9 years ago in reply to Jasper Smit

TI__Guru**** 244400 points

Hello Jasper,

The settings look fine. Is the flash protection on any sector set?

Also please double check if the unlock sequence has been followed as per the following post.

e2e.ti.com/.../374640

And a flash erase check passes.

Regards
Amit

0 Amit Ashara over 9 years ago in reply to Jasper Smit

TI__Guru**** 244400 points

Hello Jasper,

The TM4C123x has a Sector size of 1K. So you have clearly crossed the sector boundary. It may be possible that the ICDI binary may have been corrupted. I would suggest using a XDS100v2 emulator pod/.

Regards
Amit

0 Jasper Smit over 9 years ago in reply to Amit Ashara

Prodigy 50 points

Following the correct procedure results in the same error when unlocking the device.

I think we narrowed it down to just a hardware defect of the launchpad. We ordered a new launchpad which should arrive tomorrow, I will give an update then.

Thank you very much for your time,

Jasper

0 Jasper Smit over 9 years ago in reply to Amit Ashara

Prodigy 50 points

The new launchpad works just like expected, the old one was just broken apparently.

0 Amit Ashara over 9 years ago in reply to Jasper Smit

TI__Guru**** 244400 points

Hello Jasper,

Apparently. It always recommended to use a proper debug pod. The ICDI on the launchpad are not meant for production as it does not come with all possible diagnostics.

Regards
Amit

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Writing more than 8kB with LM flash programmer