LAUNCHXL-F2800157: Interfacing with F2800157 with DRV8353RS-EVM

You may take a look at the Universal Project and Lab User’s Guide: https://www.ti.com/lit/spruj26.

Yes, you only need to change the device ADC and GPIO configuration in hal.c and hal.h according to the F2800157.

Dear Yanming Luo,

Thank you for your support. I referred the same document..

I configured the GPIO pins and ADC in the hal.h and hal.c according to the F2800157.

I need code review support from TI.

Thanks,

Premkumar.T

We Tried configured code based on F280025C to F2800157 Launchpad interface with Drv8353. We are able to read analog pins perfectly but motor not running.

During debug mode, GUI Expression window ISR increment and Bus voltage reading perfectly.

Pin mapping done based on Launchpad F2800157 to Drv8353, GPIO26 used as EQEP2I and SPI_CS added JUMPER from GPIO11 to DRV CS PIN.

We used PMSM motor with HALL Sensor.

Pre-Defined Symbols used: 

MOTOR1_HALL

BSXL8353RS_REVA

MOTOR1_FAST

We need code review support from TI.

Any help is much appreciated. Thanks in Advance.

Hello Yanming Luo

We Tried configured code based on F280025C to F2800157 Launchpad interface with Drv8353. We are able to read analog pins perfectly but motor not running.

During debug mode, GUI Expression window ISR increment and Bus voltage reading perfectly.

Pin mapping done based on Launchpad F2800157 to Drv8353, GPIO26 used as EQEP2I and SPI_CS added JUMPER from GPIO11 to DRV CS PIN.

We used PMSM motor with HALL Sensor.

Pre-Defined Symbols used: 

MOTOR1_HALL

BSXL8353RS_REVA

MOTOR1_FAST

We need code review support from TI.

Any help is much appreciated. Thanks in Advance.

Hi Shankar,

Which build level are you testing with and are there any faults reported? Are you using one of the standard motors that we support and can be ordered from TI, or is it a new motor?

To verify current and voltage sensing (if using FAST estimator) you can try running Build Level #2 and follow along with the User's Guide instructions. This will also be used to verify if the estimator is working properly, i.e. speed calculation is correct.

Best,

Kevin

Hi Kevin Allen18,

Thanks for the reply.

I am testing build level 4 directly (without test level 1, level 2, level 3) its standard motor which TI supports 24V motor.(Attached motor details in link)

https://www.bing.com/images/search?view=detailV2&ccid=bfEiTHwh&id=7B667527D6264EC08829B92193E8015863D947F2&thid=OIP.bfEiTHwhfEb3AuC8kElSOgAAAA&mediaurl=https%3a%2f%2fae01.alicdn.com%2fkf%2fH2be5c693ec964be78f0e04312b9e2a06h%2f42BLS02-24V-4000rpm-52-5W-0-15N-m-42mm-3-phase-Square-Brushless-DC-Motor-Low.jpg_350x350.jpg&exph=350&expw=350&q=24+rmcs+42BLS02&simid=608022728069747972&FORM=IRPRST&ck=3A17FAB3E2B036638F2D5032C46B7F9E&selectedIndex=1&ajaxhist=0&ajaxserp=0

Now motor is jerk and stopped immediately. Don't know the issue. 

Motor Jerk video attached  

Hello @kevin Allen18,

Thanks for your response.

1)Looks like below variables are not showing correct values.
. motorVars_M1. adcData.I_A
. motorVars_M1. adcData.V_V
Not sure the read values are correct attached Screenshot.
2)when set flagEnableRunAndIdentify ,In Expression GUI when I set Ref Sped as 60 its start with 1.723 and drop to zero.

3)when set flagEnableRunAndIdentify
. motorVars_M1.faultMtrUSe.all ---> always zero

Good point here is when enable LEVEL2 build motor running at 60HZ speed but speed in GUI Expression is always zero.

But motor not run in Level3 & Level 4 Build.

Right now, Vdc bus voltage reading wrong values.

when i set Power supply to 9V its always showing 17.xx voltage
when i set Power supply to 30V its always showing 17.xx voltage

I feel, the current and voltage offset are not correct.

Waiting for your response

Hi Shankar,

The phase current offsets look correct, but your phase voltage offset, offset_V_sf, are not correct. They should all be very close to 0.5 value. Phase voltage sensing is required for FAST sensorless algorithm, but I don't believe it actually gets used for HALL based algo.

Shankar Prabhakaran said:

Right now, Vdc bus voltage reading wrong values.

This will need to be fixed. You are using the DRV8353 boosterpack with the F280015x LaunchPad?

Shankar Prabhakaran said:

Good point here is when enable LEVEL2 build motor running at 60HZ speed but speed in GUI Expression is always zero.

It runs smoothly in this case? If you're using the HALL based algo then there must be something wrong with the software related to that. Maybe as simple as the device pin / peripheral configuration for HALL sensor interfacing.

Best,

Kevin

Could you please explain why Phase Voltage offset,offset_V_sf is  not correct? anything has to check/change in the code???

VDC wrong reading values: Yes, using Drv8353 with F280015x Launchpad.

Motor running is okay but while starting it has some trouble to start and after that its running fine.

But still motor not running at Level 3 & Level 4

Hello Kevin Allen18,

As per latest updated, Able to read correct voltage (Voltage varying in all range) and Motor running in open loop (Build_Level_2) Successfully.

But still not able to run motor in closed loop (BUILD_LEVEL_3 & BUILD_LEVEL_4). Its jerks actually and stop.

During motor run got over current fault failure and motor stops immediately. How to resolve this?

Hi Shankar,

Have you made sure that the motor parameters being used in 'user_mtr1.h' file are correct for your motor? Have you verified the current sensing is working properly when running Open-loop build Level #2? It's also possible the DRV8353x CSA gains may not be getting set properly over SPI.

Best,

Kevin

Hi @kevin Allen18,

Updated parameter doesn't know its correct or not. but got it through when enable motor identification " userParams_M1.flag_bypassMotorId = false;"

Got the below current value during motor running in Build_Level_2

 It's also possible the DRV8353x CSA gains may not be getting set properly over SPI.

Could you please elaborate this issue?

Hi @kevin Allen18,

Could you please add your feedback here. Waiting for your reply.

As per Latest update we are able to read correct bus voltage and Motor running in LEVEL1,LEVEL2, LEVEL3 Build.

Still Failing in LEVEL4 Build, its starts and jerk but stopped with motor fault (Module over current.)

In Level 3 Build motor running but "motorVars_M1.speed_Hz" always zero. initially, its start with 1.7342 and after that its always zero. but motor is running. Set values are almost close to value in "motorVars_M1.speedEST_Hz " .

Our Motor Spec attached

Predefined symbols:

MOTOR1_HALL,

BSXL8353RS_REVA,

MOTOR1_FAST

Hi Shankar,

OK, let's focus on getting 'motorVars_M1.speedEST_Hz' to represent the correct speed in either Build Level #2 or #3. Once that is working you can move onto BL#4.

Shankar Prabhakaran said:

Predefined symbols:

MOTOR1_HALL,

BSXL8353RS_REVA,

MOTOR1_FAST

You have both HALL and FAST algorithms enabled (i.e. check estimatorMode variable). Which is enabled at run time and being used to calculate 'motorVars_M1.speedEST_Hz'?

• If it's FAST then you need to verify that voltage sensing is working properly
  • This includes verifying voltage offsets are all close to 0.5
• If using HALL then need to verify that HALL sensor signal connections and configuration are correct
  • Check hall_M1 struct values in expressions window

Best,

Kevin