parameter "gpio" was set but never used-lyl123的回答

parameter "gpio" was set but never used

2019-08-18 20:39发布

1.#define PD0 PDout(0)

2.case 122:relay_control(500,PD0);break;

3.void relay_control(u16 delay,char gpio)
{

   gpio=1;
   delay_ms(delay);
   gpio=0;
   delay_ms(delay);

}

USER xt.c(22): warning:  #550-D: parameter "gpio" was set but never used
  void relay_control(u16 delay,char gpio)

红 {MOD}部分该怎么改？求大神指导

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