In this detailed post, the author discusses the architecture of their large-scale embedded projects, combining an AMD Xilinx FPGA with a STM32 MCU for high-speed data processing and control. The two-chip setup offers advantages like simplified programming, elimination of DDR SDRAM layout, and decentralized security enforcement. The author explores the use of the Flexible Memory Controller for MCU-FPGA communication, achieving speeds of up to 284 Mbps. Despite some challenges, the setup has been surprisingly painless, paving the way for future enhancements like 64-bit transfer support and bridging to AHB. This comprehensive approach sets the foundation for the author’s future FPGA+MCU endeavors.
https://serd.es/2024/07/24/Memory-mapping-an-FPGA-from-a-STM32.html