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在CCS的AM5728工程中调用UART相关API编译出错

Other Parts Discussed in Thread: AM5728

你好,我现在使用CCS v8.0编译AM5728上的DSP程序,软件中调用了Uart_init、Uart_open等相关的API,也包含了PDK中的以下头文件:

<ti/drv/uart/UART.h>
<ti/drv/uart/soc/UART_soc.h>
<ti/drv/uart/src/UART_osal.h>

但是在编译时提示UART_xxx相关的API unresolved symbols错误,

undefined first referenced
symbol in file 
--------- ----------------
UART_init ./Uart.obj 
UART_open ./Uart.obj 
UART_socGetInitCfg ./Uart.obj 
UART_socSetInitCfg ./Uart.obj 
UART_write ./Uart.obj 

error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking; "helloBIOS.out" not built

手动添加ti.drv.uart.ae66路径到工程的”linker“选项,但会报更多的UART接口相关错误。不知道问题出在哪里,请帮忙解决,感谢。