摘要
SPI通信作为一种全双工高速通信方式,电路实现简单、占用资源少,在工业嵌入式系统中应用十分广泛。但是,通信过程中没有握手、应答和数据校验,影响了系统通信的可靠性。本文通过对嵌入式系统中的SPI通信机制的研究与分析,设计了一种高可靠性的SPI通信机制。这种SPI通信机制的高可靠性通过系统长期的现场应用得到了验证。
a full duplex high-speed communication mode, SPI has simple circuit and low resource consumption, and it is widely used in em bedded systems of industry. However, there are no handshake, response and data checking in communication so that the reliability of system communication is reduced. By the research and analysis of SPI communication mechanism in embedded systems, a high-reliability SPI communication mechanism is designed, which is validated in long-term practical applications.
出处
《单片机与嵌入式系统应用》
2014年第8期59-61,共3页
Microcontrollers & Embedded Systems
基金
国网电力科学研究院智能电网终端安全防护项目
关键词
SPI接口
可靠性
改进
外设
SPI interface
reliability
improvement
peripheral equipment
