STM32L151C6 SWD issue

[wal99d]

Posted on March 17, 2015 at 22:42

Greeting,

I'm facing an issue while trying to program STM32L151C6 using STM32F4 Discovery board as programmer. What I did are the following:1. I removed CN3 jumpers from STM32F4 Discovery board page 14 in [

https://www.google.com.sa/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB4QFjAA&url=http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00039084.pdf&ei=f58IVcOiNcb4Uo7vgNAD&usg=AFQjCNE7wWFkc36n9LqACgAqzuc_c-tdGw

][1]2. I connect NRST, SWDIO, GND, SWCLK, Vdd to my target STM32L151C6 SWD pins except SWO ( I kept it floating)

Pin:number CN2 (STM32L151C6) Pin:1 Vdd Pin:2 SWCLK (PA14) Pin:3 GND Pin:4 SWDIO (PA13) Pin:5 NRST (NRST) Pin:6 SWO (No Contact)

3. I used STM32 ST-Link Utility V2.2.6 to test SWD.The result is ''Cannot connect to ST-Link''I've attached the schematic for my circuit design.I really appreciate your prompt help guys to facilitate this issue.  #swd #st-link/v2 #stm32l151c6

[gtopba]

Posted on February 01, 2016 at 04:52

Problem solved!

The orientation of the MCU was incorrect. I missed understand that the Pin1 is at the top left according to STM32L476xx Datasheet page 59/232. Actually, Pin1 is at bottom left according to the datasheet page 223/232. I could not find the 'New'. I have used Ctrl+f to search for it. There is no such thing. Thank you for your help.