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28335调试时出现unresolve problems（是在TI给的工程上修改的）

fuheng que
Prodigy 70 points
Other Parts Discussed in Thread: TMS320F28335

 errors encountered during linking; "E:/Code of TMS320F28335 CCS4/v120/DSP2833x_examples/epwm_updown_aq/Debug/Example_2833xEPwmUpDownAQ.o ut" not built  
unresolved symbol _epwm2_isr, first referenced in E:/Code  Example_2833xEPwmUpDownAQ 
unresolved symbol _InitAdc, first referenced in E:/Code  Example_2833xEPwmUpDownAQ
unresolved symbol _InitEPwm1Example, first referenced in E:/Code  Example_2833xEPwmUpDownAQ
unresolved symbol _InitEPwm2Example, first referenced in E:/Code  Example_2833xEPwmUpDownAQ
unresolved symbol _InitGpio, first referenced in E:/Code  Example_2833xEPwmUpDownAQ 
而程序中我大部分是有声明的

void InitGpio(void);
void AdcInit(void);
void InitAdc(void);

void InitEPwm1Example(void);
void InitEPwm2Example(void);
void InitEPwm3Example(void);
void InitEPwm4Example(void);

interrupt void epwm1_isr(void);
interrupt void epwm2_isr(void);
interrupt void epwm3_isr(void);
interrupt void epwm4_isr(void);