AWR2944EVM: DPM on OOB demo

Bruce Hu

Part Number: AWR2944EVM
Other Parts Discussed in Thread: AWR1843, AWR2944

Tool/software:

I traced OOB demo source codes, and found that DPM module (not found in AWR1843 MRR example), is it the communication way between MSS and DSS?

Any question is why DPC_OBJDET_INSTANCEID defined as (0xFEEDFEED) ?

#define DPC_OBJDET_INSTANCEID (0xFEEDFEED)

/*****************************************************************************
* Initialization of the DPM Module:
*****************************************************************************/
memset ((void *)&dpmInitCfg, 0, sizeof(DPM_InitCfg));

/* Setup the configuration: */
dpmInitCfg.ptrProcChainCfg = NULL;
dpmInitCfg.instanceId = DPC_OBJDET_INSTANCEID;
dpmInitCfg.domain = DPM_Domain_REMOTE;
dpmInitCfg.reportFxn = MmwDemo_DPC_ObjectDetection_reportFxn;
dpmInitCfg.arg = &objDetInitParams;
dpmInitCfg.argSize = sizeof(DPC_ObjectDetection_InitParams);

/* Initialize the DPM Module: */
gMmwMssMCB.objDetDpmHandle = DPM_init (&dpmInitCfg, &errCode);
if (gMmwMssMCB.objDetDpmHandle == NULL)
{
test_print ("Error: Unable to initialize the DPM Module [Error: %d]\n", errCode);
MmwDemo_debugAssert (0);
return;
}

Thanks

BRs

Bruce

7 months ago

0 Samhitha Bobba 7 months ago

TI__Mastermind 21120 points

Hi Bruce,

DPM module is used to communicate between MSS and DSS in AWR2944 OOB demo.

Bruce Hu said:
Any question is why DPC_OBJDET_INSTANCEID defined as (0xFEEDFEED) ?

instanceId differentiates each DPM instance. It should be allocated to a unique value. There is no significance for the value that is defined.

Regards,

Samhitha

0 Bruce Hu 7 months ago in reply to Samhitha Bobba

Intellectual 570 points

Hi Samhitha,

For MmwDemo_DPC_ObjectDetection_dpmTask() In dss_main.c, it call DPM_sendResult() to send DPC results.

Does MSS receive the results in MmwDemo_DPC_ObjectDetection_reportFxn() with DPM_Report_NOTIFY_DPC_RESULT report type?

Thanks

BRs

Bruce

0 Bruce Hu 7 months ago in reply to Bruce Hu

Intellectual 570 points

Hi Samhitha,

Any feedback for this question?

Thanks

BRs

Bruce

0 Samhitha Bobba 7 months ago in reply to Bruce Hu

TI__Mastermind 21120 points

Hi Bruce,

Yes, you are correct. Refer to "C:/ti/mmwave_mcuplus_sdk_04_07_00_01/mmwave_mcuplus_sdk_04_07_00_01/ti/control/dpm/docs/doxygen/html/group___d_p_m___e_x_t_e_r_n_a_l___d_a_t_a___s_t_r_u_c_t_u_r_e.html#ga81b51eda4c065fbdeb4cc8de5697f70c" for more details.

Regards,

Samhitha

0 Bruce Hu 7 months ago in reply to Samhitha Bobba

Intellectual 570 points

Hi Samhitha,

I am confused about "DPM_Report_DPC_STARTED" report type.

For the description marked as red in group___d_p_m___e_x_t_e_r_n_a_l___f_u_n_c_t_i_o_n.html, and the source codes in mss_main.c.

Does it call DPM_start() and then receive "DPM_Report_DPC_STARTED" ?

Thanks

BRs

Bruce

0 Samhitha Bobba 7 months ago in reply to Bruce Hu

TI__Mastermind 21120 points

Hi Bruce,

After calling DPM_start() in MmwDemo_dataPathStart() function - MSS, DSS receives the message and DPC_ObjectDetection_start() function is executed. After DPC has started successfully, MSS receives the message DPM_Report_DPC_STARTED - MmwDemo_DPC_ObjectDetection_reportFxn(). If DPC has been started without an error, post a semaphore object to report the DPC start.

For detailed flow of the DPM communication between MSS and DSS, refer to C:/ti/mmwave_mcuplus_sdk_04_07_00_01/mmwave_mcuplus_sdk_04_07_00_01/ti/demo/awr294x/mmw/docs/doxygen/html/index.html.

Regards,

Samhitha

0 Bruce Hu 7 months ago in reply to Samhitha Bobba

Intellectual 570 points

Hi Samhitha,

From the detailed flow, I see "Frame event" and "chirp event", compared to gDPC_ObjectDetectionCfg, some questions are as below,

1. For frame event , does it mean DPC_ObjectDetection_frameStart() will be called when one new frame starts?

2. For chirp event, no Chirp Available Function be registered, why does DPC_ObjectDetection_execute() be called for each chirp?

Thanks

BRs

Bruce

0 Samhitha Bobba 7 months ago in reply to Bruce Hu

TI__Mastermind 21120 points

Hi Bruce,

Bruce Hu said:
For frame event , does it mean DPC_ObjectDetection_frameStart() will be called when one new frame starts?

Yes, you are correct.

Bruce Hu said:
For chirp event, no Chirp Available Function be registered, why does DPC_ObjectDetection_execute() be called for each chirp?

Check Q8 in (+) [FAQ] Software related queries based on mmWave SDK - Sensors forum - Sensors - TI E2E support forums.

EDMA channel of EDMA_DSS_TPCC_A_EVT_RSS_ADC_CAPTURE_COMPLETE is triggered by the chirp available interrupt which transfers data from ADC buffer to HWA memory. DPC_ObjectDetection_execute() is not called for every chirp. It's called once per each subframe. The chirp available interrupt transfers the data from ADC buffer to HWA membank (for each chirp in a frame). Once the ADC data is transferred to the HWA membank, HWA is triggered to perform the range processing of that chirp. After the range processing of all the chirps is completed, doppler processing starts.

Regards,

Samhitha

0 Bruce Hu 7 months ago in reply to Samhitha Bobba

Intellectual 570 points

Hi Samhitha,

For profile/Chirp config, some questions are as below,

1. In AWR1843 MRR example, it uses rlSetProfileConfig() and rlSetChirpConfig()

2. In AWR2944 OOB example, it uses MMWave_addProfile() and MMWave_addChirp()

What's the difference between such APIs?

If I'd to set Per Chirp for phase shift Configuration, AWR1843 use below two APIs,
rlRfSetMiscConfig() // Enable per chirp Phase shift
rlRfSetPhaseShiftConfig()

For AWR2944, which APIs I need to set? Just use MMWave_addPhaseShiftChirp() ? Or other API also need to be set?

Thanks

BRs

Bruce

0 Samhitha Bobba 7 months ago in reply to Bruce Hu

TI__Mastermind 21120 points

Hi Bruce,

Create a new E2E as the queries are related to mmwavelink and not DPM.

Regards,

Samhitha

0 Bruce Hu 7 months ago in reply to Samhitha Bobba

Intellectual 570 points

Hi Samhitha,

Created as below,

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1469911/awr2944evm-profile-chirp-config-related-set-apis

Thanks

BRs

Bruce

0 Samhitha Bobba 7 months ago in reply to Bruce Hu

TI__Mastermind 21120 points

Hi Bruce,

I am closing this thread as the queries related to DPM are resolved.

Regards,

Samhitha