Cannot make STLINK v2 connection with STM32WL33

[KarthikGo]

Hi ,

I am using STM32WL33 in my design and just received my first PCB assembled.

i am trying to flash the board with basic program but no success yet , it would be great if you can help to find the problem.

i have tried with both CubeIDE and Cubeprogramer with STlink V2 , seems like debugger is connected but not going to further steps .here is the screen shots

i have used same ST linkV2 and setup in another board (STM32WLE5) and i can connect.

 

 

schematic:

 

 I checked the SWDIO, SWCLK, VDD, GND and NRST pin connection to ST link it looks okay

I checked the voltages VDD : 3.3V, VCAP:1.2V , NSRST:3.3V , VFBSD(SMPS output):1.4V

No pullup resistor in NRST and PA10 pin is floating.

Circuit is design based on ST reference design

Any help is appreciated 

//Karthik

 

 

[Maryem]

Hello @KarthikGo,

 

I apologize for the delayed response.

I have successfully connected an STM32WL33 using the ST-Link V2 with version 2.19.0 of STM32CubeProgrammer.

Could you please try again using this version? You can download it from the following Link.

 

Maryem.