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.c文件添加后CMD连接的问题!



请问是不是我没有连接到cmd文件才会出现这个问题,我新建的一个.c文件,加到工程里面了,编译出现下面的问题。已经弄了好久了,真心求解答!!

undefined first referenced
symbol in file
--------- ----------------

_sIntegrator_DSTATE_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_jIntegrator_DSTATE_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_sFilter_DSTATE_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_Angle_Now_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_Temp_jD_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_sPID_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_Temp_jI_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_sError_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj

_jError_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
_Direction_2 H:\DSPworkspace_v5_2\321\2642\Debug\pid.obj
>> error: symbol referencing errors - './Debug/PWM_QEP.out' not built

>> Compilation failure

Build Complete,
2 Errors, 1 Warnings, 0 Remarks.