出现了下面这个情况,真的快疯了!
Cube\Cube.axf: Error: L6218E: Undefined symbol HAL_UART_Receive_IT (referred from usart.o).
Cube\Cube.axf: Error: L6218E: Undefined symbol HAL_UART_Init (referred from usart.o).
Cube\Cube.axf: Error: L6218E: Undefined symbol HAL_UART_IRQHandler (referred from usart.o).
Cube\Cube.axf: Error: L6218E: Undefined symbol HAL_UART_GetState (referred from usart.o).
这几个函数应该是uart_hal库的,我已经导入了,但是就是出现这个情况,我有点迷,求助啊!!