PIC18f 2个简单的中断有一个没有响应

PIC-18F420把2个中断在我的代码中，1是在其他工作中中断。基本上是2个按钮（读取稳定在引脚0和5推）。我的中断1工作良好，但第二根本没有响应（RB1）。漏掉什么东西？没有特别的优先权，只要任何一个被推动，系统都会做出响应。



      以下为原文

    PIC-18f4520

Putting 2 interrupts in my code, 1 is working other is not. Basically 2 push buttons (reading steady 0 at pins and 5 upon push). My Interrupt 1 works fine, but the 2nd is not responding at all (RB1). Missing something ? No special priority, just if either one is pushed the system will respond.

void interrupt_init(void){
    INT0IF = 0;                 // reset external interrupt flag bit
    INT1IF = 0;                // " " RB1
    INTEDG0 = 1;            // interrupt on the rising edge
    INTEDG1 = 1;            // " " RB1
    INT0IE = 1;             // enable the external interrupt
    INT1IE = 1;            // " " RB1
    GIE = 1;                 // enable global interrupt
}

void interrupt ISR(void){
    INT0IF = 0;            // reset interrupt flag "RB0"
    INT1IF = 0;           // reset " ""RB1"

    while(PORTBbits.RB0 == 1){
        LCDcmd(0xD4),LCDstring("Interrupt 1 detected");
Do this command;}
    while(PORTBbits.RB1 == 1){
        LCDcmd(0x80),LCDstring("Interrupt 2 detected");
Do that command;}
}

int main(void){
interrupt_init();
ADCON1 = 0x04;              // Disable B0,B1 analog (safe)
TRISB = 0b11111111;       // Interrupts B0,B1
while(1){
  Do this, Do that;
}