2023-01-24 09:06 AM
I'm using vbus to power supply the MCU, through a voltage regulator.
For the MCU I'm using the stm32f427, not the 39, as in the development board, but they seemed compatible with my project features.
When I connect the board to my laptop via USB, the overcurrent led turns on, and my operating system (ubuntu) does not detect any new USB device.
If I connect boot0 to VCC, the command lsusb in ubuntu takes some seconds to respond.
Can you please give me some suggestions?
Thank you in advance
2023-01-31 08:24 AM
Ok try this order
On PC you need preinstall STMCubeProgrammer as step 0
If device isnt found check if syste is in bootloader , but detect other interface
or MCU fail other way.
2023-01-31 08:55 AM
Is there actually nothing connected to the VCAP pins as it appears above?
That would be a problem...
2023-01-31 09:01 AM
Can you download the videos and see them if you don't mind?
I did what you asked without success
2023-01-31 09:19 AM
Here is what you asked for me. You can see in the first run that a blinking program is running, then I did what you asked, and you can see the results:
2023-01-31 09:19 AM
Thank you, I will give it a try and let you know the result!
2023-01-31 09:30 AM
2023-01-31 09:49 AM
It seems that I'm missing VCAPS and PDR_ON, I will try both!! Thank you
PVD I didn't understand what they mean, maybe does not exist in stm32f427?
2023-01-31 10:04 AM
If you have not enabled the PVD, I don't think that it is of concern.
2023-02-28 06:33 AM
I figured it out.
I'm missing a crystal in PH0 and PH1, not it's working!
Thank you all!