This problem has been fixed in older MCU+SDK versions, and please look at the below FAQ, which clearly explains what the problem is and how to fix it.
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1198105/faq-am64x-how-to-run…
抱歉回复晚了,这是个bug。请看下面工程师的回复。 There is a software bug in the MCAN loopback DMA example on AM64x, I have brought out the concern with software team. Will update here as soon as the bug is fixed.
Please refer to the following link:
https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/latest/exports/docs/linux/Foundational_Components/Kernel/Kernel_Drivers/Network/CPSW-Ethernet.html
请看下面MCU SDK user guide上的两个裸机程序:Layer 2 Examples on Baremetal (NoRTOS)和TCP/IP Examples using LwIP Stack on Baremetal (NoRTOS)。 https://dev.ti.com/tirex/explore/content/mcu_plus_sdk_am64x_09_01_00_41/docs/api_guide_am64x/EXAMPLES_NETWORKING.html