Cannot connect to B-U585I-IOT02A Discovery kit for IoT node with STM32U5 series

[psabela]

All of a sudden,  I cannot connect to this board via stlink usb cable.  I tried pressing reset button, updated firmware, connect in every possible mode (hardware reset, core reset).  Is there a combination/sequence of pressing buttons? In other stm32 mcu I saw  a way to erase memory by connecting a resistor to reset pin and  ground momentarily.  Can this be done on this board and how?   Anything else i can try before I trash it?   Thank you for your help!

 

[KDJEM.1]

Hello @psabela,

 

Could you try with another USB cable? Which error did you get?

I recommend you to look at these FAQs: 

• How to solve connection errors when connecting and programming the STM32 target board
• How to solve debugger connection issues

These articles describe tips to prevent or fix errors encountered when connecting the STM32 target board to your computer.

 

I hope this will help you to solve the issue.

Thank you.

Kaouthar

[psabela]

OMG!  I must have accidentally slid off the little plastic jumper connector connecting JP4 off of the pins.  (Not an electrical guru here.)  I only noticed it when comparing to an identical board that I subsequently purchased thinking I must have damaged this one.   Anyhow, the plastic connectors that slide onto both JP4 or JP3 are important -- I was not able to established connection to the board without either one.