SI4432进入不了中断

只看该作者 · 2013-11-23 12:28

void main(void)
{
      U8 ItStatus1,ItStatus2;
      U16 delay;
      U8 length,temp8;
      U8 payload[10];

      //Initialize the MCU:
      //       - set IO ports for the Software Development board
      //       - set MCU clock source
      //       - initialize the SPI port
      //       - turn ofF LEDs
      MCU_Init();
                                                      /* ======================================================== *
                                                      *                                              Initialize the Si443x ISM chip                               *
                                                      * ======================================================== */

      //Turn on the radio by pulling down the PWRDN pin
      SDN = 0;
      //Wait at least 15ms befory any initialization SPI commands are sent to the radio
      // (wait for the power on reset sequence)
      for (temp8=0;temp8<15;temp8++)
      {
            for(delay=0;delay<10000;delay++);
      }

      //read interrupt status registers to clear the interrupt flags and release NIRQ pin
      ItStatus1 = SpiReadRegister(0x03);                                                                                                             //read the Interrupt Status1 register
      ItStatus2 = SpiReadRegister(0x04);                                                                                                             //read the Interrupt Status2 register

      //SW reset
      SpiWriteRegister(0x07, 0x80);                                                                                                                               //write 0x80 to the Operating & Function Control1 register

      //wait for POR interrupt from the radio (while the nIRQ pin is high)
      while ( NIRQ == 1);
}
攫取的一端程序 NIRQ总为1，根本就进入不了中断
这程序为什么进入不了中断了？我用的是的C8051F931的硬件接口三线模式其中SCK 为 P1.0 SDI P1.1 SDO P2.2 NSELP1.4
想不通啊哪位大哥做过的？赐教一下感激不尽！