Dear Sir,
We are a small R & D company, based in Bulgaria, Europe.
We specialize in developing Embed systems based ST(STM32),Microchip (Atmel – AVR,ARM) and TI (MSP430) MCPUs and peripheries.
For our mobile projects use nRF51/52xxx and CC2540/41 BLEs.
We realize projects with requirements similar to yours.
See and my profile in freelancer
Our tools for develop STM32 based system are:
Mikroelectronica ARM compiler
Keil ARM.
Atollic TRUEStudio for STM32.
SRM32 DISCOVERY boards
MikroPROG - emulator.
Note:
We based in Europe,Bulgaria - not customs problems and taxes for delivery models and samples for testing and build prototypes.
Best
Valeri T