LP-AM243: AM243x

Yes, sbl_null was flashed before. I could run hello world, hello world cpp, system project with 5 subprojects on 5 cores on AM243x-LP board, and derivers/boot demo to erase all flash. I could then run EtherCAT Slave Simple Example connected to TwinCAT on r5f subsystem, where I could change the status of three LEDs; it worked a few times of debug. There was then a meeting. After that I repeated to debug EtherCAT Simple Example and ended up with the error message shown above. I then tried to run deriver/boot example using for jtag flashing again - it did not work. Then I tried a few other examples; it alse failed to work.

I then used uniFlash gui to read the memory, only first 0x80 bytes have values and all rest memory is zeros. I have not checked the generated linker script. 

I am wondering if the boot process is disrupted. However, the root cause is not the most important to me at this moment. How to get debug work again? 

I can share my project with you I did not modify your example at all.

Hello Jinlong,

Jinlong Shen said:

After that I repeated to debug EtherCAT Simple Example and ended up with the error message shown above.

Have you tried power cycling the EVM and reconnecting the JTAG cable when the error occur?

Did you still face the same issue after doing the method suggested above?

Also when you power cycle the EVM are you able to see the SBL logs?

Also please tell us how many EVM are connected to the host PC?

Jinlong Shen said:

I can share my project with you I did not modify your example at all.

It will be helpful to replicate the issue and debug it faster.

Regards,

Tushar

Thanks - I do not see SBL logs now. I had seen them when the board was still working
I will try this:
e2e.ti.com/.../lp-am243-lp-am243x-can-not-flash-firmware. 

Yes, missing sbl outputs indicated that I have deleted sbl before. I recovered the board by flashing sbl again.