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EK-TM4C1294XL: How to trigger ROM based serial boot loader on TM4C1294 ?

Ian Lan
Prodigy 140 points
Part Number: EK-TM4C1294XL

Hello,

I have EK-TM4C1294XL board with Tiva TM4C1294. I would like to trigger the ROM based serial loader that is supposed to present on the chip from the factory. Here are the steps.

1. Use LM Flash programmer, switch to ICDI interface, Flash > Erase entire. Power cycle

2. Switch to Serial UART COM8 interface, Program > select bin file blinky.bin, Address offset = 0x00

3. Click program. Error > Failed to establish comm with target.


Please advise how to troubleshoot this problem.

Regards !

  • 0
    TI__Guru 72500 points
    I just wanted to let you know that I have read your post and have repeated that experiment with the same results. I don't know the answer. I will do some more digging when I am back in the office on Monday.
  • 0 in reply to Bob Crosby
    TI__Guru 72500 points

    OK, not completely sure why, but I tried a second EK-TM4C1294XL and it worked. Then I went back to the first one and tried it again. This time it worked. It might be that the first time I ran into the issue described in advisory SYSCTL#22. (The ROM does not have the updated SysCtlClockFreqSet function.) Make sure you do not disable auto baud support.

  • 0 in reply to Bob Crosby
    Prodigy 140 points
    Thank you Bob Indeed autobaud must be selected for LM flasher to work !