I am trying to upload a program in cortex m4 u sing ulink2. I have connected vcc gnd swdio and swdclk from cortex m4 to jtag 20 pin connector but the com port is not showing on pc. I also supplied power that is vcc gnd from a power source to cortex m4 processor but still no result.Also 3.3 v is not coming from jtag when it is plugged in.Please guide what to do.
Whatever that is, it's nothing to do with Keil!
Again, AFAIK, the uLink-2 does not provide a COM port.
"still supply was not coming from ulink2"
As noted and confirmed above, the uLink does not provide power to the target.