Hello Dear,
We are a team of experts with a cumulative experience of more than 50 years in the field of embedded systems, programming, electronics, and prototype development. Our experts have yeats of experience working with 8-bit, 16-bit and 32bit MCUs developing low power complex devices.
I have checked the details of your project and shared the same among my team. We have STM32F4 Discovery board and we use both IAR EWARM and Keil-MDK. We have worked on BTLE V4.1 from ST. . If you have any query please feel free to ask.
Regards
Ch