ST_LINK V2 Not detecting Target

[Pas Kol]

Posted on December 26, 2017 at 20:23

So I made a custom STM32F446RET6 board and I first used a mini ST_LINK programmer to connect to the MCU. I was able to program it but couldn�t debug it since the mini ST_LINK programmer doesn't have the SWO pin. I used STM32 ST-LINK Utility and Keil to program the chip.

I then purchased the ST_LINK V2 programmer from ST but it doesn�t connect to the MCU (target). My laptop does recognise the ST_LINK V2 programmer since I have the stsw-LINK009 software installed. The SWCLK. SWDIO, and SWO pins are directly connected to the male headers as seen in the pictures.

Here are the Connections:

I also attached the trace.log file from STM32 Utility: 

Any ideas as to why this is happening?

#stm32f4 #debugging #no-target-connected #keil-ide #st_link

[Kenta Chang]

Posted on December 31, 2017 at 07:36

Thanks.

I think, there are some incorrects on my F446-PCB, and I will check my schematic. 

Next, I will study F446's datasheet, and modify my schematic for Regulator Off.