Issue about STM32F746ZG + IHM08M1

[Erem]

Hi

I want to use STM32F746ZG and IHM08M1 to control BLDC and PMSM.

I already remove recommended bridges and resistor, but I have some issue.

1.    F746ZG can’t connect motor profiler.

if I only use a USB, there will shows an error.

 if I use USB and ST-Link both, there also shows an error.

        Other people also have same problem, and the problem isn’t solved.

       https://community.st.com/s/question/0D53W00000WbUKXSA3/st-motor-profiler-with-nucleof746zg-ihm07m1-connection-error

2.    The default PWM pin map isn’t correct.

The default pin of CH2N is E10, CH3N is E12.

And the pin should be PB0 and PB1.

3.    MC WB Monitor can’t connect the serial port when F746ZG connect to IHM08M1.

But when I remove IHM08M1, it connects successfully.

When I only connect CN11 on F746ZG to CN7 on IHM08M1, it also connects successfully.

However, I connect CN11 on F746ZG to CN7 on IHM08M1, PA6 and PB14 to CN10 on IHM08M1, connection failed.

4.    I can’t access many registers to get the data.

Ex. 0x23 to 0x30 (Ia, Ib ……, rotor speed)

       And there aren’t relative cases in the motor_control_protocol.c.

       Is that means I need to add the cases if I want to get the data?

       Why not add all cases in default.

[GMA]

Hello,

May be it is linked to signal sent by F746 "LD3 [Red]" through PB14 and sent to CN10_28.

On IHM08, CN10_28 is linked to BKIN protection, could you please try by removing R74 on IHM08 side (it is the same issue on IHM07, R49 has to be removed).

Best regards.