Abstract:Aiming at the problem of multi-source sensor data interaction efficiency in aircraft navigation systems, the paper investigates a high-speed data interaction method for multi-core processors based on shared memory, designing a high-speed data transmission channel and a heterogeneous multi-core data communication scheme using the OpenAMP architecture. This approach resolves issues of real-time (high-speed) performance and reliability in data signal reading and interaction. From a hardware perspective, the paper designs the system link connection method for the programmable logic part and employs an AXI DMA controller to achieve high-speed data writing to DDR memory. By running a bare-metal program and a Linux system on two Cortex-A9 processors within the SoC, extensive data interaction between the multi-core processors is realized based on the RPMsg protocol. Through practical operation and testing, it is verified that at a maximum system clock frequency of 100MHz and a single data transmission volume of up to 10000×4 B, the speed of writing data from the FPGA to DDR memory can reach 244MB/s, achieving efficient large-scale data interaction.