1. When using 16M external SDRAM as emwin cache, (1366*768*3*2) is used as LTDC display space, (8192*1024) is allocated to GUI memory as GUI_NUMBYTES. When double buffering is turned on (RGB565 color format), the displayed image will be stuck at a fixed time. It is normal to turn off double buffering, but the curtain will be drawn when switching images.
2. Refer to the official routine to transplant LWIP 1.41 LwlP_TCP_Echo_Client, and then use the netconn_connect() function to connect to the server, and the return result is ERR_RTE. At this time, check the constant orange light on the right side of the network port, and the green light on the left side flashes. I can’t get any information by using the packet capture tool and using the command line to ping the machine. How can I judge whether lwip is initialized normally?
3. How to configure MPU protection when LWIP is enabled?
4. Is the memory space used by LWIP AXI RAM?
5. The USB can work normally during debugging, it can recognize the U disk and export data. The U disk cannot be recognized after the power is turned off and restarted. Please analyze the reason.
