一种基于STM32的星载FPGA在轨重构方法研究及地面验证

Research on on-orbit reconfiguration method of spaceborne FPGA based on STM32 and ground verification

为了实现某星载差分吸收光谱仪CCD驱动电路的FPGA在轨重构功能,提出了一种基于STM32的星载FPGA在轨重构的地面验证方法。分析了实际的重构方案并提出地面实验方案,从硬件设计和软件设计两个方面阐述了地面实验的总体方案。经过实验室测试验证,上位机发送和回读的数据一致,STM32可以模拟JTAG协议实现加载配置数据至FPGA,重构时间可缩短至800 ms。该方法的硬件和软件设计被证明是合理可行的,可以完成对FPGA功能的修改。该方案可为CCD驱动电路的FPGA重构方法提供参考。

To realize the FPGA on-orbit reconfiguration function of CCD drive circuit of a spaceborne differential absorption spectrometer,an STM32-based ground verification method for on-board reconfiguration of FPGA is proposed.The actual reconfiguration scheme is analyzed and a ground experiment scheme is proposed,then overall scheme is described from two aspects of hardware design and software design.After the test validation in the laboratory environment,it is found that the data sent and read back by the host computer are consistent,and STM32 can simulate the JTAG protocol to load configuration data to the FPGA with reconfiguration time being shortened to 800 ms.The design of hardware and software has been proved to be reasonable and feasible,and can complete the modification of FPGA functions.It is presumed that the solution can provide a reference for FPGA reconfiguration method of CCD driving circuit.