i am using St32f429BITx controller evaluation board. when i programmed it using ST-link then it programmed easily, no problem there but after program when i check the output(even toggle a single PIN) then it not functioning.I dont understand the problem. Also there is no frequency on the Crystal pins, i changed the crystal twice but no effect, if there anyone who knows this problem please tell.
Did you try with already exisiting examples (in Pack Installer) for this discovery board ?
I think that could be a good starting point.