【摘要】 CAN网络由于具有速率高、抗干扰能力强等优点在火灾报警系统中得到广泛应用。提出了基于CAN总线的火灾报警系统的拓扑结构,并设计了相应的火灾报警显示系统,重点介绍了显示系统中基于ARM的SPI接口CAN模块的硬件和软件实现,包括关键部分的硬件设计原理,以及软件流程和部分代码。更多还原

【Abstract】 CAN Bus which features high speed transmission and anti-jamming is used widely in the fire alarm system.The fire alarm system topological structure based on CAN Bus is introduced,the fire alarm display system is designed,and the realization of hardware and software based on ARM using the SPI interface are discussed,including the circuit of the CAN interface,the part of the software flow chart and some important codes.更多还原