AWR1843: What is the clock tick period for AWR1843?

Lei

Expert 2050 points

Part Number: AWR1843

What is the period of clock tick for AWR1843?

According to the "AWR1843 Single-Chip 77- to 79-GHz FMCW Radar Sensor", it seems the system clock is 40Mhz.

Then, I guess the period of one clock tick if 1/40Mhz.

Then to make a task sleep for 1 second, should use code Task_Sleep(40*1024*1024).

Is it correct?

Thanks

0 Cesar over 3 years ago

Hi,

You are correct that the Xtal is 40MHz. However this is converted to system clock 200Mhz

So, it should be:

Task_Sleep(200*1000*1000)

Thank you

Cesar

0 Lei over 3 years ago in reply to Cesar

Expert 2050 points

Thanks Cesar,

Theoretically, Task_sleep(200*1000*1000) should be one second sleep, but it cause very long sleep when I used it...

By test, Task_Sleep(1000) is more likely to pause the task for 1 second.

Kind regards

+1 Cesar over 3 years ago in reply to Lei

You are right, sorry for the confusion

RTOS usually configures the timer tick to be 1 ms

So, Task_Sleep(1000) should be 1 s

Thank you

Cesar

Sensors forum