readme.txt

stm32F103库文件

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : readme.txt
* Author             : MCD Application Team
* Version            : V1.0
* Date               : 10/08/2007
* Description        : Description of the CortexM3 Example1.
********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
本例示范了如何利用STM32的CortexM3内核的Bit-Band访问功能来实现对SRAM中的某个变量进行单个比特的读写修改操作。

对位于SRAM内Bit-Band的字进行操作（取值0x00或者0x01），等同于对目标变量的相应位进行同样的操作。
对应公式如下：
bit_word_addr = bit_band_base + (byte_offset x 32) + (bit_number x 4)

例如：0x23FFFFFC = 0x22000000 + (0xFFFFF*32) + 7*4
对0x23FFFFFC进行操作，等同于对位于0x200FFFFC的变量第7位进行操作。

Example description
===================
This example shows how to use CortexM3 Bit-Band access to perform atomic read-modify-write
and read operations on a varaible in SRAM.


Directory contents
==================
stm32f10x_conf.h  Library Configuration file
stm32f10x_it.c    Interrupt handlers
stm32f10x_it.h    Header for stm32f10x_it.c
main.c            Main program


Hardware environment
====================

    
How to use it
=============
In order to make the program work, you must do the following :
- Create a project and setup all your toolchain's start-up files
- Compile the directory content files and required Library files :
  + stm32f10x_nvic.c
  + stm32f10x_rcc.c
  + stm32f10x_lib.c
  + stm32f10x_flash.c           
    
- Link all compiled files and load your image into either RAM or FLASH
- Run the example

******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE******