CCS/AM5728: LED blink example issue

david kasper

Part Number: AM5728

Tool/software: Code Composer Studio

1. I copied the prebuilt MLO SBL located under “C:\ti\processor_sdk_rtos_am57xx_6_01_00_08\prebuilt-sdcards\evmAM572x\sd_card_files” to an SD card

2. I successfully demonstrated the TI Cortex-A15 LED blink test (default DEBUG configuration)

3. I followed the Application Image Creation procedure in section 4.6.3.2.6.1 below using the .out file and saved “app” onto the SD card:

http://software-dl.ti.com/processor-sdk-rtos/esd/docs/latest/rtos/index_Foundational_Components.html#am57x

4. Next I inserted the SD card into the evmAM572x and reset the board.

5. Per the console port the SBL appears to successfully jump to the application.

6. The LED is asserted but doesn’t blink as it did when demonstrated via JTAG.

7. Please let me know if I am missing a step in order to make the LED blink as it did when running from JTAG.

Thanks,

Dave

over 6 years ago

0 david kasper over 6 years ago

Intellectual 835 points

FIXED. I need to remove the "PMIC disable jumper J5" (i.e. required for JTAG debugging) when booting from the SD card.

0 Pavel Botev over 6 years ago in reply to david kasper

TI__Guru**** 170625 points

Hi David,

Thanks for sharing the solution with the community.

Regards,
Pavel

0 david kasper over 6 years ago in reply to david kasper

Intellectual 835 points

FYI - upon further testing we believe that the board may not have been completely powered down. Or the issue may be intermittent. I can boot from SD card with and without jumper J5. I just ensure the board is completely powered down before connecting the power supply when J5 is connected and SD boot works fine.

0 Ming Wei over 6 years ago in reply to david kasper

TI__Guru 57185 points

Hi David,

Thanks a lot for the feedback. Please mark this thread as "Resolved".

Ming

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CCS/AM5728: LED blink example issue