Installing Micropython on a blank STM

[plakkies]

I found the problem. The load caps on the 32khz xtal were wrong. I come here to post and I see you have already suggested it.
On my second board I did not put the 32khz xtal in.

Thanks loads for all the help.

[nik77]

Hi,
I bought this board intending to put micropython on , but have some problems.
https://www.olimex.com/Products/ARM/ST/ ... 05_sch.pdf
The board was successfully programmed and after connecting to PC is listed as STM DFU. But not seen as mass storage nor virtual port is created.After reading this topic, I connected PA9 to Vbus (using 560 ohm) but still no change.I have no experience with ARM , only a little with PIC.

[dhylands]

When in DFU mode there is no USB Mass Storage. if the connected VID:PID is 0483:df11 then the board is still in DFU mode.

How did you get into DFU mode?

Normally you would connect BOOT0 to Vcc and BOOT1 to GND and RESET.

Then to boot normally, BOOT0 should be connected to GND (and BOOT1 can stay connected to GND).

[nik77]

Yes, I followed the instructions, BOOT0 is to GND but nothing works.Wiring of the board is different ,SD card is on other pins but don't think it's problem for now.

[nik77]

Now works with new firmware pybv10-1.5:))) .I tried pybv10-1.4.6 previously.