USB_LP_CAN1_RX0_IRQn一直重定义

USB_LP_CAN1_RX0_IRQn一直重定义怎么回事

 

 

keil5编译，想要用CAN接收中断接收数据，出现"USB_LP_CAN1_RX0_IRQn" has already been declared in the current scope，请问大佬们怎么解决。

 

https://bbs.csdn.net/topics/399174194?list=3933356