IWR1443BOOST: TX2‘s txOutPower does not work

Zhenhua Yue

Intellectual 295 points

Part Number: IWR1443BOOST
Other Parts Discussed in Thread: IWR1443, UNIFLASH, TIDEP-0091

Dear，

IWR1443 Evaluation Modul

I get ADC data by capture demo in SDK.

In case of TX1，‘’txOutPower‘ in ‘profileCfg’’ work，The range of ADC data is different when ‘’txOutPower‘ is 0、10、20、30.

In case of TX2，‘’txOutPower‘ in ‘profileCfg’’ does not work，The range of ADC data is the same when ‘’txOutPower‘ is 0、10、20、30.

CFG of TX1：

flushCfg
dfeDataOutputMode 1
channelCfg 2 1 0
adcCfg 2 2
lowPower 0 0
profileCfg 0 77 20 5 80 0 0 40 1 256 8000 0 0 30 //profileCfg 0 77 20 5 80 10 0 40 1 256 8000 0 0 30 //profileCfg 0 77 20 5 80 30 0 40 1 256 8000 0 0 30
chirpCfg 0 0 0 0 0 0 0 1
frameCfg 0 0 128 1 20 1 0
adcbufCfg 0 0 0 1
sensorStart

CFG of TX2：

flushCfg
dfeDataOutputMode 1
channelCfg 2 2 0
adcCfg 2 2
lowPower 0 0
profileCfg 0 77 20 5 80 0 0 40 1 256 8000 0 0 30 //profileCfg 0 77 20 5 80 10 0 40 1 256 8000 0 0 30 //profileCfg 0 77 20 5 80 30 0 40 1 256 8000 0 0 30
chirpCfg 0 0 0 0 0 0 0 2
frameCfg 0 0 128 1 20 1 0
adcbufCfg 0 0 0 1
sensorStart

over 7 years ago

0 Radio-Joe over 7 years ago

TI__Mastermind 37500 points

Hello,

I will have to test this on the EVM, to give you a more detailed response.

The initial response, in the mmwave SDK User Guide Table 1

The channelCfg needs to match the bit field of the intended Rx and Tx connections to be used.

You have selected Rx2, and either Tx1 or Tx2.

In the ChirpCfg, the Tx antenna mask must be compatible.

Normally the data in memory contains the Rx outputs in order.

To check the Tx to Rx coupling, you can change the Rx LNA gain from 30db default to 24 or 36db, to see that the Rx trackes the change.

Second there is a Tx backoff control using the documentation a backoff of 6db can be used to see if the Rx reflected magnitude is lowered.

I will post more results after checking on the EVM.

Regards,

Joe Quintal

0 Radio-Joe over 7 years ago in reply to Radio-Joe

TI__Mastermind 37500 points

Hello,

Please tell me the device marking on top of the IWR1443 device, and the version of the mmwave SDK you are using. My initial test is done with Radar Studio, so I can show the plot of the Rx (you would need a Devpack+TSW1400) or mmwave Studio (DCA1000).

You need to check the release notes of the mmwave SDK to match the device you have.

Hello, the Tx output power backoff is a shared field , I would trace in the software that the value you are wanting to set

" file:///C:/ti/mmwave_sdk_01_01_00_02/packages/ti/demo/xwr14xx/capture/docs/doxygen/html/cli__mmwave_8c_source.html#l00471 "

I have used the Radar Studio, and illustrated the Tx backoff function for 34db Rx LNA gain, 0.5RCS target at 2 meters. You can see the change in the Rx return IQ level in the last figure. I will try to trace more tomorrow.

Here is the reduction of Tx2 by 6db.

Regards,

Joe Quintal

0 Zhenhua Yue over 7 years ago

Intellectual 295 points

Thanks for your reply.
The SDK verson is 01-01-00-02.
I will tell you chip mark in a few days.I am not in office. I have tested ES2.0 and ES3.0 verson,the same result.
I notice that the range of ADC are different when txOutPower is changed.But the range is the same in my test used TX2.
One more question,your rxGain is 98,it is 24-48 in SDK user guide.

zhenhua.yue

邮箱：zhenhua.yue@godacn.com

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在2018年07月24日 08:04，Radio-Joe 写道：

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RE: IWR1443BOOST: TX2‘s txOutPower does not work

Radio-Joe

Hello,

Please tell me the device marking on top of the IWR1443 device, and the version of the mmwave SDK you are using. My initial test is done with Radar Studio, so I can show the plot of the Rx (you would need a Devpack+TSW1400) or mmwave Studio (DCA1000).

You need to check the release notes of the mmwave SDK to match the device you have.

Hello, the Tx output power backoff is a shared field , I would trace in the software that the value you are wanting to set

" file:///C:/ti/mmwave_sdk_01_01_00_02/packages/ti/demo/xwr14xx/capture/docs/doxygen/html/cli__mmwave_8c_source.html#l00471 "

I have used the Radar Studio, and illustrated the Tx backoff function for 34db Rx LNA gain, 0.5RCS target at 2 meters. You can see the change in the Rx return IQ level in the last figure. I will try to trace more tomorrow.

Here is the reduction of Tx2 by 6db.

Regards,

Joe Quintal

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0 Radio-Joe over 7 years ago in reply to Zhenhua Yue

TI__Mastermind 37500 points

Hello
The Rx LNA gain range is 24-48db. In my example yesterday, the value was 34db. When using the Radar Studio, or mmwave Studio software, the TSW1400 or DCA1000 uses the LVDS high speed data to capture the Radar Rx data.

The Uniflash programming is difference for the IWR1443 ES3.

Since the Tx output power backoff is a shared field within the CLI parameters, I will look in the Doxygen software documentation to find the bit field orientation.

The ICD document (install Radar Studio or Mmwave Studio) - under the docs directory.
Please check your data format Tx0 bit7:0, Tx1, bit 15:8, Tx2 bit 23:16

when I modify an Out of Box demo, to include changing parameters, I see the power change.

Please send more questions, or comments.

Regards,
Joe Quintal

0 Zhenhua Yue over 7 years ago

Intellectual 295 points

Pictures shows chip mark.
First picture,I used TX2 and RX2,and i need to use TX2's txOutpower.

zhenhua.yue

邮箱：zhenhua.yue@godacn.com

签名由网易邮箱大师定制

在2018年07月24日 23:43，Radio-Joe 写道：

A Message from the TI E2E™ Community

Dear E2E User:

Per the ongoing discussion on E2E, an answer was suggested to resolve your issue.

Please let us know if you believe the issue has been resolved. Please click one of the following buttons on the thread:

1: If the answer provided resolved your issue, click This resolved my issue

2: If the answer provided did not resolve your issue, and your question needs further attention, click This did NOT resolve my issue

We appreciate your feedback and invite you to enjoy free standard shipping from the TI store. Once you click “This Resolved my Issue” to confirm that your issue has been resolved, we will send you an email with your free shipping coupon code.

This thread will be locked after 30 days of inactivity.

Regards,
E2E team
E2E.ti.com

RE: IWR1443BOOST: TX2‘s txOutPower does not work

Radio-Joe

Hello
The Rx LNA gain range is 24-48db. In my example yesterday, the value was 34db. When using the Radar Studio, or mmwave Studio software, the TSW1400 or DCA1000 uses the LVDS high speed data to capture the Radar Rx data.

The Uniflash programming is difference for the IWR1443 ES3.

Since the Tx output power backoff is a shared field within the CLI parameters, I will look in the Doxygen software documentation to find the bit field orientation.

The ICD document (install Radar Studio or Mmwave Studio) - under the docs directory.
Please check your data format Tx0 bit7:0, Tx1, bit 15:8, Tx2 bit 23:16

when I modify an Out of Box demo, to include changing parameters, I see the power change.

Please send more questions, or comments.

Regards,
Joe Quintal

View online

You received this notification because you subscribed to the forum. To unsubscribe from only this thread, go here.

Flag this post as spam/abuse.
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0 Radio-Joe over 7 years ago in reply to Zhenhua Yue

TI__Mastermind 37500 points

Hello,
The software for uniflash programming should be different in these two cases. The first picture is an XIWR1443 ES3 preproduction part, it needs MSS code, and a BSS patch file. The BSS programming is based in ROM. Please see the specific programmation from TIDEP 91 new release software, the old release software is not correct for this part.
The second picture is an XIWR1443 ES2, for this the mmwave SDK or the existing TIDEP-0091 sw package can be used.
Did you experiment with the byte fields in the Tx power backoff, this is what the mmwave SDK utilizes?
Regards,
Joe Quintal

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IWR1443BOOST: TX2‘s txOutPower does not work