数据进入时不会调用usart2中断

当数据进来时，我的USATAR2中断没有被调用。这是我的代码：



      以下为原文

    my Usart2 interrupt is not being called when data is coming in.
here is my code:


int main(int argc, char** argv) {
...
OpenUART1(UART_EN| UART_NO_PAR_8BIT | UART_1STOPBIT , UART_RX_ENABLE|UART_TX_ENABLE, (FPb /16/desired_baud) - 1 );
ConfigIntUART2(UART_RX_INT_EN | UART_TX_INT_DIS | UART_ERR_INT_EN | UART_INT_PR0 | UART_INT_SUB_PR0);
OpenUART2(UART_EN| UART_NO_PAR_8BIT | UART_1STOPBIT , UART_RX_ENABLE|UART_TX_ENABLE, (FPb /16/desired_baud) - 1 );

EnableIntU2TX;
INTEnableSystemMultiVectoredInt();

...
}

...

void __ISR(_UART2_VECTOR, IPL2SOFT) IntUart2Handler(void)
{
   unsigned char buffer[21] = {0};
   //unsigned char temp[ask_number];
   //int loop_time = size - 5;
   int i2 = 4;
   int intTemp =0;
   int i; int t; int counter =1;
   float ff;
   char str2[4];
   char intValue[1];
    for( t = 0 ; t < 21; t++)
    {
        while(!DataRdyUART2());
        {
        buffer[t] = ReadUART2();
        }
    }
     
        Write_Usart(": completing answer = ");
       char RX_data = '0';
       for( int t = 0; t <(buffer[2]/2); t++ ) {
     intTemp = (((unsigned int)buffer[i2] << 8) + (unsigned int)buffer[i2 +1]);
     sprintf(intValue,"%i",counter );
     Write_Usart(intValue);
     Write_Usart(": Value is = ");
     sprintf(intValue,"%i",intTemp);
     Write_Usart(intValue);
     Write_Usart("rn");
     i2 = i2 + 2;
     counter++;
       }
      
}