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Sasha2
Sasha2
Associate
November 9, 2019
Question

Writing a program to the controller

  • November 9, 2019
  • 9 replies
  • 1632 views

Hi). I made a minimal design for STM32WB55 on board. This board has 3 program pads. There ara GND, SWDIO, SWCLK. Сontroller current is 11mA at the factory program. I try to flash the controller using these contacts, but nothing works. I use ST_LINK (STM32F407 discovery) and ST_LINK Utility. How i can flash this controller?

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9 replies

Anonymous
November 9, 2019

Hi !

How about 4 contact: Vdd ?

Regards,

Vyacheslav.

Sasha2
Sasha2Author
Associate
November 9, 2019

thanks for the answer Vyacheslav

I feed the controller from the li-ion battery through the LDO (3V3)

Anonymous
November 9, 2019

Sasha, Vdd is needed in order for the stlink to know that the controller is working, such as Vref. In other words: : the voltage does not go to the controller but from it.

"The power supply from the application board is connected to the ST-LINK to ensure signal compatibility between both boards."

Best,

Vyacheslav.

Tesla DeLorean
Tesla DeLorean
Guru
November 10, 2019

The stand-alone ST-LINK needs it's buffer powered by the Target, the one on the F407-DISCO doesn't

Check VDDA supply. Check state of NRST pin. Check part orientation.

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Sasha2
Sasha2Author
Associate
November 9, 2019

Thanks Vyacheslav, I'll try this.

Sasha2
Sasha2Author
Associate
November 9, 2019

sorry Vyacheslav, do you speak Russian or Ukrainian?

Anonymous
November 9, 2019

Yes, I answered in "My messages".

Sasha2
Sasha2Author
Associate
November 11, 2019

Thank you all for your help. Problem resolved. I used USB st_link programmer and all is worked. ST_LINK in STM32F407 Discovery did not support the controller as I understand.

Ozone
Ozone
Principal
November 11, 2019

You might try to update the firmware of the onboard ST-Link on the F407-Discovery as well.

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