66AK2G12: How to implement Bare Metal UART Interrupt

Hello Todd,

The Processor SDK for K2G has example code of using the UART driver. If you want to write bare-metal code, maybe you can check the UART driver code itself to see how interrupt works?

Please note that TI has stopped supporting bare-metal SW development for K2G devices, as announced here.

Regards,

Jianzhong

Hi,

Thanks for your reply.

I installed an SDK yesterday with that very intention. It installed a whole load of stuff under the C:\ti folder and I have absolutely no idea where to start or the time to invest. None of the folder names seem to make much sense.

No longer supporting bare metal? That's absurd and incredibly disappointing!

In an attempt to move forward I have, for now, ditched interrupts and implementing in a different way, but now I am fighting other issues regarding the processor/board/environment constantly crashing. Even with an empty main. I'll open post a different/new topic on that.

So far not a great experience :-( 

Hello,

You should have the PDK installed. UART driver code can be found at <pdk installation folder>\packages\ti\drv\uart\v0. 

Regards,

Jianzhong

Jianzhong Xu said:

You should have the PDK installed

Hi Jianzhong

I eventually found what you're referring to. Or at least I think I did. 

I've been having other issues, namely not being able to write to the ePWM registers (separate thread here: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1137425/66ak2g12-can-t-write-to-any-of-the-epwm-registers/4222610#4222610) and this lead me towards trying to use the SDK).

Yeah, no. Another day lost and nothing to show for it as, yet again, nothing works.

There is a part of me that questions the point of putting in any more time into trying to get SDK stuff working when Ti don't even support it themselves?!

Anyway, sorry for the rant, am getting very frustrated with guides that create more questions than answers. 

This is the SDK that I downloaded: https://www.ti.com/tool/PROCESSOR-SDK-K2G (not the linux options as I've no experience with that and am on a steep enough learning curve as it is). This IS the correct one for the 66AK2G12 part, right?

And the SDK guide is https://software-dl.ti.com/processor-sdk-rtos/esd/docs/latest/rtos/index_overview.html 

But the examples, like hello world, in 9.1 mentions, under Prerequisites Software and Hardware, different platforms leaving me confused: Which is the right SDK? What is the right guide? 

To top it all of, I shouldn't be wasting time on any of this as writing directly to a register to manually set up peripherals is normal standard practice! Argh!

Todd Dowty said:

This is the SDK that I downloaded: https://www.ti.com/tool/PROCESSOR-SDK-K2G (not the linux options as I've no experience with that and am on a steep enough learning curve as it is). This IS the correct one for the 66AK2G12 part, right?

That's right.

Todd Dowty said:

And the SDK guide is https://software-dl.ti.com/processor-sdk-rtos/esd/docs/latest/rtos/index_overview.html 

Correct too.

Todd Dowty said:

But the examples, like hello world, in 9.1 mentions, under Prerequisites Software and Hardware, different platforms leaving me confused: Which is the right SDK? What is the right guide? 

Apparently K2G is missed there. Sorry about the mistake.

Regards,

Jianzhong

Jianzhong Xu said:

Apparently K2G is missed there. Sorry about the mistake

So where do I go from here? I am completely blocked by not being able to write values to the ePWM registers and, so far, nothing I've tried, including various so-called 'support', have helped. 

Todd,

If you're looking for examples of setting up UART interrupts, you could look at the UART driver code at <pdk installation folder>\packages\ti\drv\uart\v0.

Regarding writing ePWM register, I've responded to your other thread.

Regards,

Jianzhong