串口出来的值一直显示是0，感觉很奇怪，有人遇到过吗？-第2页回答

串口出来的值一直显示是0，感觉很奇怪，有人遇到过吗？

2019-08-14 03:12发布

程序是，根据16个IO的高低电平决定一个变量的值，但是我在主函数用串口打印出来的值一直显示是0，有人遇到多这样情况吗？下面是程序。。。管脚的定义：
#define TALLY_1                      PBin(0)
#define TALLY_2                      PBin(1)
#define TALLY_3                      PBin(3)
#define TALLY_4                      PBin(4)
#define TALLY_5                      PBin(8)
#define TALLY_6                      PBin(10)
#define TALLY_7                      PBin(11)
#define TALLY_8                      PBin(12)
#define TALLY_9                      PBin(13)
#define TALLY_10             PBin(15)
#define TALLY_11             PCin(13)
#define TALLY_12             PCin(14)
#define TALLY_13             PCin(15)
#define TALLY_14             PAin(0)
#define TALLY_15             PAin(1)
#define TALLY_16             PAin(15)
变化的函数：
u8 Tally_Control()
{
      #ifdef RX_CRAD
      static u8 tally_data;
            if(TALLY_1)
                     tally_data=1;
            if(TALLY_2)
                     tally_data=2;
            if(TALLY_3)
                     tally_data=3;
            if(TALLY_4)
                     tally_data=4;
            if(TALLY_5)
                     tally_data=5;
            if(TALLY_6)
                     tally_data=6;
            if(TALLY_7)
                     tally_data=7;
            if(TALLY_8)
                     tally_data=8;
            if(TALLY_9)
                     tally_data=9;
            if(TALLY_10)
                     tally_data=10;
            if(TALLY_11)
                     tally_data=11;
            if(TALLY_12)
                     tally_data=12;
            if(TALLY_13)
                     tally_data=13;
            if(TALLY_14)
                     tally_data=14;
            if(TALLY_15)
                     tally_data=15;
            if(TALLY_16)
                     tally_data=16;
            return tally_data;
      #endif
}

主函数：
int main(void)
{
      u8 t=0;

      NVIC_Configuration();
      delay_init();
      uart_init(115200);
      NRF24L01_Init();


      LED_Init();
      KEY_Init();

      Get_addr();
      RF_Init();
      printf("RF_Init() ");
RF_send_data( );
      //RX_Mode();
      while(1)
      {
            if(KEY0==0)
            {
                     while(KEY0==0);
                     TalkRegister();
            }

            if(USART_RX_STA&0x8000)
            {

                     USART_RX_STA =0;
                     Tally_send(USART_RX_BUF[0]);
            }
            Tally_send(Tally_Control());
            printf("tally_control %d ",Tally_Control());
            //Tally_send(1);
            delay_ms(100);
      }
}

串口打印出来的结果

有人知道该怎么做吗？

请指教

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