摘要
针对FT1500A处理器GPIO数量较少又没有专用扩展芯片,讨论了三种替代方案,并设计了一种基于国产MCU GD32F403VC实现支持50路外部中断输入系统方案。FT1500A处理器通过串口与GD32F403VC连接,并通过串口配置GD32F403VC GPIO检测中断模式,外部中断信号触发GD32F403VC GPIO,GD32F403VC再通过串口将相应中断信号发送至处理器。最后对比测试了实验效果,验证MCU方案可行性与可靠性。
This paper discusses three alternative schemes,and designs a scheme based on the domestic MCU GD32 F403 VC to support the 50 external interrupt input system to solve the problem that the number of FT1500 A processor GPIO is few and none of the special extended chip.FT1500 A processor is connected to GD32 F403 VC through serial port,and GD32 F403 VC GPIO is configured to detect interrupt mode through serial port.GD32 F403 VC GPIO is triggered by external interrupt signal,and sends corresponding interrupt signal to the processor through serial port.Finally,the experimental results are compared to verify the feasibility and reliability of the MCU scheme.
出处
《工业控制计算机》
2021年第2期38-40,共3页
Industrial Control Computer
