CODECOMPOSER: One core of a multi-core system does not run correctly in the CCS debugger

Hi Todd,

I'm looking into this and will get back with you shortly.

Regards,
Frank

Hi Todd,

Sorry for the delayed response.

There is an introduction to System Projects in the MCU+ Academy here: https://dev.ti.com/tirex/explore/content/mcu_plus_academy_am263x_01_00_00_00/modules/multicore_application.html#introduction

I don't currently have access to an AM263x LP, so I tried some experiments on the AM263x CC available to me.

I flashed SBL NULL on the AM263x CC according to these instructions: https://software-dl.ti.com/mcu-plus-sdk/esd/AM263X/08_03_01_06/exports/docs/api_guide_am263x/ADDITIONAL_DETAILS_PAGE.html#autotoc_md39

I created a System Project according to the MCU+ system projects introduction.

I created a target configuration (.ccxml) according to this: https://software-dl.ti.com/mcu-plus-sdk/esd/AM263X/08_03_01_06/exports/docs/api_guide_am263x/CCS_SETUP_PAGE.html#autotoc_md20. Next, I removed references to GEL files in the target configuration since SBL NULL handles SOC configuration. Finally, I set this target configuration as the default target configuration.

In the System Project, I was able to map the "empty" R5F projects as follows:

In all cases, I was able to launch the System Project by clicking on the "Debug" button in CCS. The code properly loaded to both cores and I was able to step through the code.

I've attached a couple of target configuration files:

• am263x_cc_sblnull.ccxml: this is for SBL NULL, I used this in my experiments
• am263x_cc.ccxml: this is for NO BOOT mode

Can you please try similar experiments and see if it makes a difference?

Regards,
Frank

Hi Frank, the steps you describe match the steps I had previously taken, minus one detail. I did not remove the gel files as you describe. I don't remember seeing that in the documentation. 

I created a new target configuration and removed the gel files. I set that configuration as default. With this new configuration, I get an error loading the files:

Cortex_R5_1: Trouble Writing Memory Block at 0x0 on Page 0 of Length 0x40: This operation is not supported by this driver
Cortex_R5_1: File Loader: Verification failed: Target failed to write 0x00000000
Cortex_R5_1: GEL: File: C:\Users\todd.bubar\workspace\am263_evaluation\metis_project\empty_am263x-lp_r5fss0-0_nortos_ti-arm-clang\Debug\empty_am263x-lp_r5fss0-0_nortos_ti-arm-clang.out: Load failed.

Let me know if you have any suggestions.

Thanks,

Todd

Hi Todd,

I'll run the experiment on an AM263x LP and get back with you. This is the configuration I plan to test:

• SDK 08.03.01.06
• CCS 12

Can you please share an example system project that isn't working for you?

Regards,
Frank

Hi Frank, I have not had any issue with the example projects. The project that is not working is my own project. What is the best way to share it with you? I'm not comfortable posting the code on a public forum.

Thanks,

Todd

Hi Todd,

If you send me a friend request, you can send me the example code in a private conversation.

What boot mode are you using?

Regards,
Frank

Prebuilt NULL bootloader included in the SDK, QSPI mode.

Todd,

Thanks for sharing your code, I'll take a look.

Regards,
Frank

Hi Todd,

I was able to reproduce the problem using your system project which loads R5_2 and R5_3. When loaded independently, the R5_2 image works properly. However, when using the sytem project, the R5_2 image jumps to the program exit. in the following screen capture, the first instruction in main() branches to 0x70054c94 which is the return from main.

For this test, I used:

• the same SDK and tools versions
• SBL NULL boot

The issue occurs whether I use a .ccxml with or without GEL files.

I'll continue working on this and keep you posted.

Regards,
Frank