还没清中断挂起就自动进入中断了...,main函数里面只是初始化外设的一些函数,但是每次只要一涉及到写初始化数据到si4438里面去,中断就自动进了。 
本来希望到这一步清挂起时再进入。-   // Read ITs, clear pending ones
 
 -   abApi_Write[0] = CMD_GET_INT_STATUS;  // Use interrupt status command
 
 -   abApi_Write[1] = 0;           // Clear PH_CLR_PEND
 
 -   abApi_Write[2] = 0;           // Clear MODEM_CLR_PEND
 
 -   abApi_Write[3] = 0;           // Clear CHIP_CLR_PEND
 
 -  // bApi_SendCommand(4,abApi_Write);    // Send command to the radio IC
 
 -  // SI4438_Write(abApi_Write[0] ,3,&abApi_Write[1] );
 
 -   SendCommand(4,abApi_Write);
 
 -   Api_GetResponse(8,abApi_Write);     // Make sure that CTS is ready then get the response
 
 
  
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