TMS570LC4357: Passing HWAG values to the N2HET

Mark Steele

Hello,

I'm currently trying to write a N2HET program where I would like to incorporate the HWAG. Right now I have a project set up in Code Composer Studio where the CPU is handling the HWAG (writing to the registers, figuring out where the gap is, setting the HWAG start bit) which is working well but ideally I would like to have this all handled by the N2HET itself.

Is there a way to do this? I think I would have to use the HTU but I'm not 100% sure if that's possible.

over 6 years ago

0 QJ Wang over 6 years ago

TI__Guru**** 199726 points

Hello Mark,

Several counters can be used for angle generator: APCNT, SCNT, ACNT:

APCNT measures the periods P(n) of the external signal. SCNT counts by step K up to the previous period value P(n-1), measured by APCNT, and then recycles. The resulting period of SCNT is the fraction P(n-1) / K. The third counter ACNT accumulates the fractions generated by SCNT.

You can use HET IDE to simulate the NHET assembly code.

www.ti.com/.../HET_IDE IDE&tisearch=Search-EN-Everything

0 Mark Steele over 6 years ago in reply to QJ Wang

Intellectual 330 points

Thanks for the quick answer.

So you're suggesting I use the SWAG instead of the HWAG if I want to use additional N2HET processing?

0 QJ Wang over 6 years ago in reply to Mark Steele

TI__Guru**** 199726 points

I am sorry I didn't ask you to use SWAG instead of HWAG. SWAG is another option for you, and HTU can be used to transfer data between main memory and NHET RAM (SWAG instructions).

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TMS570LC4357: Passing HWAG values to the N2HET