AWR1642: timeCpuCycle for output packet on UART in vital signs

Koji Toriyama

Prodigy 40 points

Part Number: AWR1642

Hi.

Please tell me the type and unit of 4Byte timeCpuCycle shown in the header of the figure below.
Is １frame 50ms?

over 6 years ago

0 Cesar over 6 years ago

TI__Guru*** 147964 points

Hi,

Yes, the frame period is 50ms. So, we are running at 20fps

"timeCpuCycle" and header format structure is defined in the mmWave SDK

C:\ti\mmwave_sdk_02_00_00_04\packages\ti\demo\io_interface\mmw_output.h

Thank you
Cesar

0 Koji Toriyama over 6 years ago in reply to Cesar

Prodigy 40 points

Thank you for your reply.

What does "timeCpuCycle" count?

The difference before and after the decimal integer is about 30000000.
I can not associate 50 ms.

Hex 　　 Dec 　　　Difference
0x5204D072 1376047218 　　-
0x53CE92D8 1406046936 29999718
0x5598569A 1436047002 30000066
0x5762199C 1466046876 29999874
0x592BDC50 1496046672 29999796
: 　　　　　　: 　　　 :

Thank you

0 Kyle Cousino over 6 years ago in reply to Koji Toriyama

TI__Mastermind 24955 points

Please keep in mind that the C674x DSP that is on the AWR1642 runs at 600 MHz. When you take the 30000000 value and divided that by 600 MHz, you arrive at the 50 ms value that squares with the earlier post.

Regards,
Kyle

0 Koji Toriyama over 6 years ago in reply to Kyle Cousino

Prodigy 40 points

Thank you for your reply.
I understand.

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AWR1642: timeCpuCycle for output packet on UART in vital signs