STM32-SERIAL print printf style

This library creates aims the creation of a serial print for STM32f1xx devices in a printf style plus a BINARY plotter.

Syntax:

• vsprintf wrapper Example: Serial_print(&huart1,"hello world %d %1.4f\n",a,b)
• binary plotter Example: Serial_print(&huart1,"BIN",a)

Requirements:

• This library requires the separated initialization of UART ports. A new fork will be created with the implicit initialization.