AWR1642: How to read GPADC data out?

Adam Yao94020

Part Number: AWR1642

Hi champion,
My customer want to use GPADC to read external voltage value, we found a post

e2e.ti.com/.../637779

They tried to follow it, but found the vaule read back is not correct. Could you help to give a specifc example showcasing how to use GPADC?

Thanks,
Adam

over 7 years ago

0 Cesar over 7 years ago

TI__Guru*** 147964 points

Hi

Can you please show us the code you have used to program the GPADC?

Thank you
Cesar

0 Adam Yao94020 over 7 years ago in reply to Cesar

TI__Genius 10910 points

Cesar,
Customer added below test code in their project, but did not get the data.

//for GPADC test
uint8_t payload[100];
MmwaveLink_setGpAdcConfig();
rlAsyncEvent(AWR_AE_RF_GPADC_RESULT_DATA_SB, 5, 76, payload); //how to???

Could you provide a workable example?

Thanks,
Adam

0 Adam Yao94020 over 7 years ago in reply to Adam Yao94020

TI__Genius 10910 points

Hi Cesar,
Is there any update from this question?

Thanks you,
Adam

0 Cesar over 7 years ago in reply to Adam Yao94020

TI__Guru*** 147964 points

Adam

We do not have an example integrated in mmWave SDK

Did the customer define this API?

MmwaveLink_setGpAdcConfig()

Thank you
Cesar

0 Chris Meng over 7 years ago in reply to Cesar

TI__Mastermind 37666 points

Cesar,

Customer updated to latest 1.2 mmwave sdk and referred to below code, they can get the right GPADC value. Below code is based on latest 1.2 sdk mmw demo.

mss_main_GPADC.c

You can set break point at below yellow line in CCS and check the value of rcvGpAdcData to get the GPADC data.

case RL_RF_AE_GPADC_MEAS_DATA_SB:

{

isGetGpAdcMeasData = 1U;

memcpy(&rcvGpAdcData, payload, sizeof(rlRecvdGpAdcData_t));

break;

}

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AWR1642: How to read GPADC data out?