AM62D-PET-CALC: TIM AM62D Initialization startup time

Hi Fernando,

Fernando Heitor said:

I measure 89,5ms from power supply

Could you let me know which signal/pin you used for this measurement? Is It MCU_PORz or any other signal.

Fernando Heitor said:

How can I reduce the startup till I can set an output pin?

I can measure it at my end once to see if I get the same measurement but there isn't much we can do to reduce this time, could you let me know the use case for measuring it only after Drivers_Open, instead of measuring the timing till the start of the SBL?

Best Regards,

Meet.

Hello,

Meet Thakar said:

Could you let me know which signal/pin you used for this measurement? Is It MCU_PORz or any other signal.

Fernando Heitor said:

I use Mcu_GPIO0_1 and set the output to detect via analyzer the signal in sbnull after Drivers_Open().

Meet Thakar said:

I can measure it at my end once to see if I get the same measurement but there isn't much we can do to reduce this time, could you let me know the use case for measuring it only after Drivers_Open, instead of measuring the timing till the start of the SBL?

OK, my question is now, can I set the output pin earlier?

I set the output pin in sbnull in main() after the following calls:

Fernando Heitor said:

I use Mcu_GPIO0_1 and set the output to detect via analyzer the signal in sbnull after Drivers_Open().

Could you share the screenshot/image of this measurement to me?

Fernando Heitor said:

OK, my question is now, can I set the output pin earlier?

Yes, you can do that, you can put it at the start of the SBL itself, but you will need to do the pinmux configurations for this at the beginning. We do something like this in this documentation for AM62P: https://software-dl.ti.com/processor-sdk-linux/esd/AM62PX/11_01_16_13/exports/docs/linux/How_to_Guides/Target/How_to_boot_quickly.html#measurements 

Could you let me know the use case behind profiling SBL NULL? 

Best Regards,

Meet.