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提出一种基于AT91RM9200处理器的高可靠双机温备解决方案。利用EP1C6、MAX6374设计两个冗余的外部Watchdog监控处理器系统的工作状态,利用AT91RM9200自带的Watchdog作为内部监测机制监控处理器本身的故障;设计并给出了以AT91RM9200为核心的监控机制的具体实现,包括心跳信号的发送和中断服务程序的设计。
This paper presents a solution based on AT91RM9200 processor with high reliability and warm standby. Using EP1C6 and MAX6374 to design the working status of two redundant external Watchdog monitoring and control processor systems, using the Watchdog built-in AT91RM9200 as the internal monitoring mechanism to monitor the processor’s own failure; design and give the AT91RM9200-based monitoring mechanism Specific implementation, including the sending of heartbeat signals and interrupt service routine design.