| 位带技术在 STM32程序设计中的应用 |
| |
| 引用本文： | 唐飞,王陈宁,查长礼.位带技术在 STM32程序设计中的应用[J].安庆师范学院学报(自然科学版),2014(1):54-57,76. |
| |
| 作者姓名： | 唐飞 王陈宁 查长礼 |
| |
| 作者单位： | 安庆师范学院物理与电气工程学院; |
| |
| 基金项目： | 安徽省自然科学基金资助项目(KJ2013B130)资助 |
| |
| 摘 要： | STM32系统的C语言中并未提供直接操作位的方法，需要使用复合语句实现位操作，程序执行效率低。位带技术是一种内存映射技术，将位带区的一“位”映射到位带别名区的一个“字”，通过对位带别名区“字”的读取和写入来改变位带区“位”的数值。在嵌入式程序设计中使用位带技术，可以降低代码占用空间，提高程序执行效率，特别适合于大量使用标志位或频繁操作IO口单个引脚的场合。
|
| 关 键 词： | 位带 嵌入式 STM32 映射 STM32 |
The Application of Bit-Band in STM32 Programming |
| |
| TANG Fei,WANG Chen-ning,ZHA Chang-li.The Application of Bit-Band in STM32 Programming[J].Journal of Anqing Teachers College(Natural Science Edition),2014(1):54-57,76. |
| |
| Authors: | TANG Fei WANG Chen-ning ZHA Chang-li |
| |
| Institution: | (School of Physics and Electronic Engineering, Anqing Teachers College, Anqing 246133, China) |
| |
| Abstract: | It＆#39;s very difficult to single bit write and read operations in C programming .The low efficiency of program execution is associated with the read-write operation.The Cortex-M3 memory map includes two bit-band regions.These regions map each word in an alias region of memory to a bit in a bit-band region of memory.Writing to a word in the alias region has the same effect as a read-write operation on the targeted bit in the bit-band region.It can reduce the code space and improve the efficiency of pro-gram execution by using the bit-band technology. |
| |
| Keywords: | bit-band embedded system mapping |
| 本文献已被 CNKI 维普 等数据库收录！ |
