利用多线程并发技术对SPI Flash快速编程  

Fast SPI Flash Programming Based on Multi-threading Concurrent

作　　者：丁峰平 袁常顺 Ding Fengping;Yuan Changshun(Hangzhou Innovation Research Institute,Beihang University,Hangzhou 310052,China)

机构地区：[1]北京航空航天大学杭州创新研究院,杭州310052

出　　处：《单片机与嵌入式系统应用》2020年第5期41-43,共3页Microcontrollers & Embedded Systems

摘　　要：大型集成数字电路板上经常有多颗SPI Flash器件需要编程,在工厂批量生产中往往要占据较多时间。常规生产流程是一个接着一个烧写Flash,多个Flash的烧写时间就会有线性累加。本文将多个Flash的SPI总线经过多路选择器汇集后直接连接至SPI适配器,再基于SPI Flash编程的等待时间,应用多线程并发操作适配器,使得编程时间仅仅取决于最大容量的Flash,极大提高了生产效率。There are always some SPI Flashes to be programmed on PCB assembly in factory.The programming procedure takes much time during the mass production because the Flashes are programmed one by one.As a result,the total programming time is linear accumulated.By adding 1-of-2 multiplexer before every SPI Flash,and routing all SPI buses to external SPI adapter,the programming time can be saved with multithread concurrence based on waiting time for SPI page programming.In this way,the total programming time depends only on the maximum size Flash,so the efficiency is improved.

关 键 词：边界扫描 SPI FLASH 多线程并发 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]