STLINK-V3PWR VCP not working

[VK Verma]

Hi,

I tried it on two different STLINK-V3PWR tools and its VCP(RX and TX) is not working after shorting the RX and TX pin with external jumper to bring it into loop back test.

Is there any remedy for this ?

Regards,

VK Verma

[AScha.3]

i made test: V3mods , pin 12 -> pin15 ; tx-rx ; start arduino2 -> ser.monitor ; write: hello loopi

no problem:

should be same on your V3pwr vcp port

[MS75]

Hello @VK Verma ,

For your test do you first supply the BRIDGE's TVCC pin with the target voltage? (more details on chapter 7.4.1 page 15 of the UM3097 STLINK-V3PWR)