我所用的的工程包是在官方031的基础上精简的，用的是STM32F107，就是为了测试LwIP网络的稳定性（如果直接用官方的工程包，也存在这种情况）-I used to work in the official 031 package is based on the streamlined, using STM32F107, LwIP is to test the stability of the network (if you work directly with the official package, there is also the case)