Hi, I bought a Nucleo STM32F401RE board. Yeasterday the board was working fine in dimming led in A0 pin which was configured in PWM mode. Now I can't reprogram the board. See details for error message. PS. I'm a total beginner with microcontrollers

[VNisk.1]

Starting server with the following options:

    Persistent Mode      : Disabled

    Logging Level       : 1

    Listen Port Number     : 61234

    Status Refresh Delay    : 15s

    Verbose Mode        : Disabled

    SWD Debug         : Enabled

    InitWhile         : Enabled

Target Held under Reset

Error in initializing ST-LINK device.

Reason: Target held under reset.

[VNisk.1]

I know! I just haven't received my multimeter jet��.