CCS/AWR1443: ADC sampling and waveform configuration problems！

hao liu

Part Number: AWR1443

Tool/software: Code Composer Studio

mmwave_sdk_1.1.0 has been used in the development of AWR1443,I have encountered some problems with the ADC sampling and waveforms during profile configuration:

1.The ADC sampling range is 2000~37500 ksps in the demo program,can it be lowered to 200~300ksps?

2.If the sampling rate is only above 2000ksps,can the number of sampling be configured above MAX_NUM_SAMPLES? I think the number of the sampling should be constricted to the size of adcbuff. Can be raw ADC data be transmitted to DMA directly,not through the ADC Buffer?

3.Can the rampEndTime be configured above 5ms?

over 6 years ago

0 Cesar over 6 years ago

TI__Guru*** 141404 points

Hi,

Can you please explain us what you are trying to achieve?

Why are you trying to lower the sampling rate?

Thank you

0 hao liu over 6 years ago in reply to Cesar

Prodigy 40 points

Thank you for your reply！

Because of the large rampEndTime I set, if the sampling frequency is too high and the number of sampling points is limited, it can only sample a very short time of data.

0 db_woodall over 6 years ago in reply to hao liu

TI__Mastermind 21025 points

Generally, you should not exceed the limits that are specified in the code. Doing so will usually exceed the available memory, or the physical limits of the RF. Can you say (in generic radar terms) what you are trying to achieve? Range or azimuth resolution for example?

0 db_woodall over 6 years ago in reply to db_woodall

TI__Mastermind 21025 points

Hello,

As there has been no responses, let's close this thread. If you have further questions, please open a new thread.

-dave

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CCS/AWR1443: ADC sampling and waveform configuration problems！