This document describes the ARM?-based 32-bit MCU STM32F101xx and STM32F103xx

　　firmware library.

　　This library is a firmware package which contains a collection of routines， data structures

　　and macros covering the features of all peripherals. It includes a description of the device

　　drivers plus a set of examples for each peripheral. The firmware library allows any device to

　　be used in the user application without the need for in-depth study of each peripheral

　　specifications. As a result， using the firmware library saves significant time that would

　　otherwise be spent in coding， while reducing the application development and integration

　　cost.

　　Each device driver consists of a set of functions covering all peripheral functionalities. The

　　development of each driver is driven by a common API （application programming interface）

　　which standardizes the driver structure， the functions and the names of parameters.

　　The driver source code is developed in ‘Strict ANSI-C’ （relaxed ANSI-C for projects and

　　examples files）。 It is fully documented and is MISRA-C 2004 compliant （the compliancy

　　matrix is available upon request）。 Writing the whole library in ‘Strict ANSI-C’ makes it

　　independent from the software toolchain. Only the start-up files depend on the toolcha