TMS320F28386D: Performance of MPOST

W Z

Expert 2400 points

Part Number: TMS320F28386D

uint32_t *MPOST_Result = (volatile uint32_t *)0x00000006;
uint32_t *GPREG2_Result = (volatile uint32_t *)0x0007800A;

In my project, I use UART(SCIA) to send out the value of

*MPOST_Result = 0xFF FF FF FF

*GPREG2_Result = 0x 5A FF FF 0F

I Shows that the test pass.

My question is how long will MPOST need to perform?

I test as below picture shows.

After my test, increase about 5.4ms of startup.

Befor enable MPOST, the timing is 118.9ms.

After enable MPOST, the timing is 124.3ms.

over 2 years ago

0 W Z over 2 years ago

Expert 2400 points

*GPREG2_Result = 0x 5A FF FF 0F

I use the 0x0 = MPOST is run with PLL enabled for high speed (110 MHz).

0 MatthewPate over 2 years ago in reply to W Z

TI__Guru* 83780 points

WZ,

Can you try and run this with option 9, to use INTOSC with no PLL? I just want to make sure we see the correct increase in time from the number you are getting now, the 5.4ms. If we see 11x the time, ~60ms, then this will confirm that the MPOST has completed correctly with option 0.

Best,

Matthew

0 W Z over 2 years ago in reply to MatthewPate

Expert 2400 points

Zone 2 configurations will supercede zone 1 configurations, I did the change as below shows

To make the Zone 2 supercede zone 1 configurations

The timing is 181.6ms.

Compared with the orign startup time, the increase time is 62.7ms (181.6 - 118.9)

+1 MatthewPate over 2 years ago in reply to W Z

TI__Guru* 83780 points

Thanks for doing this, that means that in both cases the MPOST is completing its test suite; we can rely on the 5.4ms timing if you use the PLL option.

Best,
Matthew

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28386D: Performance of MPOST