RTOS/PROCESSOR-SDK-AM437X: How to use the dmtimer 1ms for OS 1ms tick

user5371084

Tool/software: TI-RTOS

I know that Am437x have a Timer 1 (dmtimer 1ms) for OS tick generation.this timer have a special hardware to get a true 1ms tick. but I research though all of the examples, I can find a example about how to use this timer for OS 1ms tick.

where can I find it?

over 6 years ago

0 lding over 6 years ago

TI__Guru* 95265 points

Hi,

The generation of 1ms timer is explained in 19.2.3.1.1 1 ms Tick Generation of AM437x TRM: www.ti.com/.../spruhl7h.pdf. You can refer to Processor SDK RTOS package: pdk_am437x_1_0_x\packages\ti\starterware\examples\dmtimer\countdown_timer to adapt this to DMTimer1 with 32768 Hz clock.

Regards, Eric

0 user5371084 over 6 years ago in reply to lding

Expert 2215 points

Hi Eric,

Nice to meet you!

There are the deferent register offsets between the DMTIMER1 and DMTIMER others. should I change it?

0 lding over 6 years ago in reply to user5371084

TI__Guru* 95265 points

Yes, you can change the timer instance.

Regards, Eric

0 user5371084 over 6 years ago in reply to lding

Expert 2215 points

Yes.

I see.

Processors

Processors forum

RTOS/PROCESSOR-SDK-AM437X: How to use the dmtimer 1ms for OS 1ms tick