STM32

不知怎么解决了 第一次遇到这个

2019-07-21 05:23发布

站内问答 / STM32/STM8
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main.c(35): warning:  #174-D: expression has no effect，不知怎么解决，意思知道
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8条回答
whygrasp
2019-07-21 16:41
回复【2楼】jermy_z:
---------------------------------
int f_getcapture(char DJ_n_k)
{
int DJ_capture_temp;
switch(  DJ_n_k)
{
case 0x1: DJ_capture_temp = TIM_GetCapture1(TIM2);      //?¨?±?÷2?¨??1????
break;

case 0x2: DJ_capture_temp = TIM_GetCapture2(TIM2);
break;

case 0x3: DJ_capture_temp = TIM_GetCapture3(TIM2);
break;

case 0x4: DJ_capture_temp = TIM_GetCapture4(TIM2);
break;

case 0x5: DJ_capture_temp = TIM_GetCapture1(TIM3);
break;

case 0x6: DJ_capture_temp = TIM_GetCapture2(TIM3);
break;

case 0x7: DJ_capture_temp = TIM_GetCapture3(TIM3);
break;

case 0x8: DJ_capture_temp = TIM_GetCapture4(TIM3);
break;

case 0x9: DJ_capture_temp = TIM_GetCapture1(TIM4);
break;

case 0xA: DJ_capture_temp = TIM_GetCapture2(TIM4);
break;

case 0xB: DJ_capture_temp = TIM_GetCapture3(TIM4);
break;

defaultJ_capture_temp = TIM_GetCapture4(TIM4);
break;

}
return DJ_capture_temp;
}


函数里是这个

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