PIC12LF1572串口问题

求助PIC12LF1572串口问题这里是我的初始化：
void UART_init()
{
    TRISA4=1;   //1 = PORTA pin configured as an input (tri-stated)
    TRISA5=0;   //0 = PORTA pin configured as an output
   
    ANSA4=0;    //0 = Digital I/O;  RA4 is assigned to port or digital special function

    RXDTSEL=1;  //1 = RX/DT function is on RA5
    TXCKSEL=1;  //1 = TX/CK function is on RA4

    SPEN=1;     //1 = Serial port is enabled
    CREN=1;     //1 = Enables receiver
    TXEN=1;     //1 = Transmit is enabled

    BRG16=0;      
    SPBRG=12;           //Baud Rate is 9600
     
    GIE=1;               //1 = Enables all active interrupts
    PEIE=1;             //1 = Enables all active peripheral interrupts
    RCIE=1;         //1 = Enables the USART receive interrupt
    TXIE=0;         //0 = Disables the USART transmit interrupt
     
    RCIF=0;     //0 = Interrupt is not pending
  
}
在中断中
void interrupt isr(void)
{
    uint8_t receive;
    if(RCIE&&RCIF)  
    {  
        receive=RCREG;  
        RCIF=0;
        while(！TRMT);
        uart_sent(receive);
         
    }
}
发送：
void uart_sent(uint8_t ch)
{
    TXREG=ch;
    while(1)
    {         
        if(TXIF==1) break;   //?
    }
}

问题是发送可以成功，我串口工具可以看到我发送的数据，但是接收不成功，请大神！

已退回2积分