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I
Isoux
Visitor II
October 1, 2020
Solved

Programming STM32F103ZET6 or STM32F105VCT6 for the VERY first time (using ST-LINK utility)

  • October 1, 2020
  • 5 replies
  • 4744 views

I have experience with several types of classic boards with STM32 microcontrollers (NUCLEO, Blue Pill...) that immediately connect with the stlink-v2 and st-info --probe command showing the characteristics of the controller and after that flashing is successful...

I recently bought the above mentioned two controllers and a boards (LQFP144/100 SMT to DIP Adapter PCB Board) where I soldered them with the necessary capacitors between all the VDD and VSS contacts. I properly connected SWDIO and SWCLK to PA13, PA14 pins, NRST to VDD over 10k resistors even boot0 over 10k resistors to VSS (This is how I noticed on all the schemаtics). There is no way I can read the microcontroller or flash it, although in addition to st-info and st-util, I also used STMCubeProgrammer and a linker on the Linux and Windows systems.

Result:

st-info --probe

Found 1 stlink programmers

 serial:   6e78010132124647524b4e00

 hla-serial: "\x6e\x78\x01\x01\x32\x12\x46\x47\x52\x4b\x4e\x00"

 flash:   0 (pagesize: 0)

 sram:    0

 chipid:   0x0748

On one site I found detailed instructions on how to program the new STM32f103c8t6 for the first time. Nothing special is stated there and I did it all and I don't succeed at all.

I found almost nothing on Google that would help me except for someone to mention somewhere to "Pay special attention to the pull-up resistor on the TDO line", (PB2 ?).

Is there any useful advice or experience?

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    This topic has been closed for replies.
    Best answer by Isoux

    The problem is solved!

    The downside was that I didn’t connect VDDA to VDD because I felt it wasn’t necessary if I didn’t use ADC.

    after I connected VDDA to VDD it worked.

    5 replies

    T
    TDK
    Super User
    October 1, 2020

    You should have decoupling capacitors near the chip. You said you soldered them in your post but I don't see them on the boards anywhere. They're supposed to be close to the chip.

    Rather than trying to solder this to a breakout board, buying a Nucleo board might be better and more cost efficient.

    I
    IsouxAuthor
    Visitor II
    October 1, 2020

    Thanks

    They are on the other side... 100nF ...

    T
    TDK
    Super User
    October 1, 2020

    So no bulk capacitance? Design guide recommends 4.7uF min. VDDA connected to VDD?

    https://www.st.com/resource/en/application_note/cd00164185-getting-started-with-stm32f10xxx-hardware-development-stmicroelectronics.pdf

    I
    IsouxAuthor
    Visitor II
    October 1, 2020

    Blue Pill works great with all 100nf decoupling capacitors that's not a problem, I guess it's something else

    T
    TDK
    Super User
    October 1, 2020
    Blue pill schematics show it having 10uF downstream of the LDO.
    https://github.com/dhylands/stm32-test/blob/master/board-STM32F103-Mini/STM32F103C8T6-Schematic.pdf
    I
    IsouxAuthorAnswer
    Visitor II
    October 1, 2020

    The problem is solved!

    The downside was that I didn’t connect VDDA to VDD because I felt it wasn’t necessary if I didn’t use ADC.

    after I connected VDDA to VDD it worked.

    I
    IsouxAuthor
    Visitor II
    October 1, 2020

    The problem is solved!

    The downside was that I didn’t connect VDDA to VDD because I felt it wasn’t necessary if I didn’t use ADC.

    after I connected VDDA to VDD it worked.

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