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针对SpaceWire数据通信的特点,提出一种实现SpaceWire接口卡的方法。通过对SpaceWire总线技术和PCIe总线技术的研究,提出以RMAP_IP核为基础,利用PCIe实现SpaceWire节点设备与星载主机的通信。重点介绍了SpaceWire接口卡硬件设计的方案,同时自主研制了驱动程序与应用程序对该方法进行了验证。实验表明:该接口卡具有设计简单、尺寸小、应用范围广,以及低功耗等特点,可以实现SpaceWire设备和上位机进行通信的功能,并可用来对SpaceWire网络通信状况进行实时监测。
In view of the characteristics of SpaceWire data communication, a method of realizing SpaceWire interface card is proposed. Through the research on the technology of SpaceWire bus and the technology of PCIe bus, the communication between SpaceWire node device and satellite host using PCIe is proposed based on RMAP_IP core. The scheme of hardware design of SpaceWire interface card is introduced emphatically, at the same time, driver and application program are independently developed to validate the method. Experiments show that the interface card has the features of simple design, small size, wide application range and low power consumption. It can realize the communication between SpaceWire device and host computer, and can be used to monitor the communication status of SpaceWire network in real time.