IWR6843ISK: Radar Firmware - Sensor Stop

Balaji Sridhar

Prodigy 140 points

Part Number: IWR6843ISK

Hi Team,

The idea is to stop the Radar module from the firmware, without issuing "sensorStop" from the external host.

Flow Description :

1. Radar will stream the number of frames configured in "frameCfg"

2. After streaming, the radar firmware should handle the sensor stop.

3. Thus in the next iteration, We'll issue only "sensorStart 0" for triggering the radar.

Test Case Done:

1. We tried to issue "sensorStart", without giving the "sensorStop" command.

--> ACK from radar "sensor is already started"

2. Identified the async event (MmwDemo_eventCallbackFxn) arising for frame done from BSS in main.c

--> Tried to invoke sensor stop API from the async event.

--> But the sensor stop got failed in the mmwavelink layer

Could you please suggest some ideas for stopping the radar from firmware? as well as some suggestions for debugging the low-level layer (mmwavelink and mmwave)

over 2 years ago

0 Nathan Block over 2 years ago

TI__Mastermind 37805 points

Hi Balaji,

You should be able to set the number of loops in your configuration file. See the fourth argument in the frameCfg documented at C:/ti/mmwave_sdk_03_06_00_00-LTS/docs/mmwave_sdk_user_guide.pdf

Best,

Nate

0 Nathan Block over 2 years ago in reply to Nathan Block

TI__Mastermind 37805 points

Are you sure you're failing on sensorStop? Can you place a breakpoint immediately after it to confirm?

Best,

Nate

0 Balaji Sridhar over 2 years ago in reply to Nathan Block

Prodigy 140 points

Hi Nathan,

Thank you for the response.

Added the breakpoint next to the sensor stop API. But in the CSS debugger, the logs are not getting for the async event.

Below is the CSS debugger console output.

____________________________________________________________

[Cortex_R4_0] **********************************************
Debug: Launching the MMW HWA Demo
**********************************************
Debug: Launched the Initialization Task
Debug: EDMA instance 0 has been initialized
Debug: EDMA instance 1 has been initialized
Debug: UART Instance @0802117c has been opened successfully
Debug: UART Instance @08021188 has been opened successfully
Debug: mmWave Control Initialization was successful
Debug: mmWave Control Synchronization was successful
Debug: CLI is operational
Start MmwDemo_openSensor
End MmwDemo_openSensor
Start MmwDemo_configSensor
End MmwDemo_configSensor - 1
DPC_OBJDET_IOCTL__STATIC_PRE_START_COMMON_CFG
DPC_OBJDET_IOCTL__STATIC_PRE_START_CFG
========== Memory Stats ==========
Size Used Free DPCUsed
System Heap(TCM) 65536 25304 40232 0
L3 786432 0 786432
TCM 50176 0 50176
Configuring HW LDVS
Configuring HW LDVS DONE
CBUFF HW LVDS session activated.
End MmwDemo_dataPathConfig End MmwDemo_configSensor - 2
start MmwDemo_startSensor
Starting Sensor (issuing MMWave_start)
End MmwDemo_startSensor