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Cant see the pwm from nucleo h755ziq

hyden_a_mist
Visitor

i generated the code using the workbench for stm32h755ziq and the motor driver ihm07m1 with a 12v bldc motor...and i have called the api's for motor start as well in the main code ...but after downloading it into nucleo..i cant see any pwm signals on the respective pins of nucleo ...?(assume me i'm completely new to this thing)

4 REPLIES 4
GMA
ST Employee

Hello @hyden_a_mist,

Once both cores, CM4 and CM7 compiled and flashed, did you try resetting the board by pushing "RESET" button and starting the board by pushing blue "USER" start button?

You can also use ST Motor Pilot tool to drive the board and have board status.

If you agree with the answer, please accept it by clicking on 'Accept as solution'.
Best regards.
GMA

yes i tried that...i flashed cm4 and cm7 again...and still no pwm signal is generated on the respective pins(i probed through logic analyser) ...is there any led like d11 should glow in ihm07m1, if everythig is proper...and one more thing is ld3 on nucleo turns red sometimes...if i make the connection of st -morpho little stronger it goes away...

This is the error that pops up when i try to start the motor using motor pilot

hyden_a_mist_0-1741692071085.png

 

GMA
ST Employee

Hello @hyden_a_mist,

At generation step, you have the following message, SB80 and SB84 have to be removed:

GMA_0-1741697380535.png

On Pilot GUI, VBUS exceeds 20V and your motor is a 12V. Temperature is also wrong.
As soon an error is reported, it will prevent PWM generation.

 

If you agree with the answer, please accept it by clicking on 'Accept as solution'.
Best regards.
GMA