I am trying to create a custom keyboard, and I was trying to flash my board with stm32f070c6t6 MCU in DFU mode using cube programmer, but I keep getting "no DFU detected" (of course while pulling BOOT0 pin high).
Also, every time I plug my device into my PC, the error message says, "Windows has stopped this device because it has reported problems (Code43). A request for the USB device descriptor failed."
I am new to this field, so I am running out of ideas.
I put 16MHz crystal and set up 48MHz for USB, I configured the device description based on this website; https://controllerstech.com/how-to-use-stm32-as-a-keyboard/
I pulled up D+ with a 1k5 resistor, I pulled down both CC1 and CC2 with 5k1 resistors.
I checked the voltage on the regulator and found it was totally fine (both 3v3 and 5v). I also checked the soldering and made sure that no pins were bridging.
I managed to flash the chip using STlink recently, but since this board is designed to be a keyboard, I expect the USB to work fine.
I am feeling so stuck, I have already spent like a total of 10 hours trying to figure it out, so it will be really helpful if someone tells me where I made a mistake.
Thanks.
From AN2606 , for F070x6 :
..so no 1k5 needed ! (remove it.)
+
What you want to do now ? start bootloader -> DFU mode -> flash chip ?
or build a USB - device -> "keyboard" ?
--- for me : not clear from your post.
