About hmc

hmc · 2020-09-03

Hello forum! I am trying to characterize a motor for experimentation with the workbench. I spun the rotor with a hand drill and got the following waveform, with the first 3 channels being H1, H2, H3 and the analog voltage being the back-EMF from th...

hmc · 2020-08-30

What is MTPA in the MC workbench speed position feedback management --> Hall sensors? This is NOT the Maximum Torque Per Amp, I believe. Any reference for this?Thanks for reading.

hmc · 2018-02-25

Posted on February 26, 2018 at 00:40About 2 years ago, I played around briefly with CubeMX generated custom HID code on STM32F042K6. D+/D- signals seemed to work fine, but my ''custom'' HID FW did not enumerate against Windows. I got too busy with...

hmc · 2018-02-23

Posted on February 23, 2018 at 22:56Hello,There are 2 things I do not understand about my Nucleo-FRM32F042K6 project (attached take1.ioc). As you can see, I turned off everything except the SWD and USB. I want to use the HSI48 for USB, and run ever...

hmc · 2016-07-18

Posted on July 19, 2016 at 06:13Started an example project generated by CubeMX and plugged the USB cable into the development PC. Please observe the following error. I think the report descriptor might be ill-formed: it's only 2 bytes, and ends wi...

hmc · 2020-10-17

Perhaps should be obvious, but I guess you are defining the BEMF(A) lagging the H1 edge as positive?

hmc · 2018-02-26

Posted on February 27, 2018 at 05:44I debugged the beginning of craziness to this CubeMX generated functionHAL_StatusTypeDef HAL_PCD_Start(PCD_HandleTypeDef *hpcd){ /* Enabling DP Pull-Down bit to Connect internal pull-up on USB DP line */ hpcd->...

hmc · 2018-02-24

Posted on February 25, 2018 at 04:26Thanks for the response, Pavel. My question might not have been clear; let me try again.STM32F042 can indeed generate the 48 MHz internally--HSI48. But it also has 8 MHz HSI and PLL (like many other STM32F devic...

hmc · 2018-02-23

Posted on February 23, 2018 at 23:53Thanks for the quick reply Bogdan,So is it cheaper to choose HSI48 into the clock mux (SW) and divide by 4 to run everything at 12 MHz, or to turn on PLL to generate a 16 MHz from 8 MHz? The power consumption cal...

hmc · 2016-07-22

Posted on July 23, 2016 at 03:02Thanks for replying. My laptop crashed a few days ago, so I lost the CubeMX installation along with it. I believe I was working with the latest CubeMX version. Unless the custom HID example's report descriptor was c...

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Is this a 120 or 60 deg displacement angle hall motor?

What is the Hall sensor MTPA?

CubeMX HID on Nucleo F042K6

STM32CubeMX config question

CubeMX generated custom HID project does not enumerate

Re: Is this a 120 or 60 deg displacement angle hall motor?

Re: CubeMX HID on Nucleo F042K6

Re: STM32CubeMX config question

Re: STM32CubeMX config question

Re: CubeMX generated custom HID project does not enumerate