Lỗi ngắt chân RB0

[Knight_FlyCn]

Code của mình như sau:


#include <Coordinator.h>
#include "def_18f4620.c"
#include "slave_2_tx_rx.h"

#use delay(clock = 4000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bi ts=8)
#define SPI_MODE_0 (SPI_L_TO_H | SPI_XMIT_L_TO_H)

#bit CS = 0xF80.4
#bit RST = 0xF82.2
#bit INT_ = 0xF81.0
#bit WAKE = 0xF82.1


#bit CS_Direction = 0xF92.4
#bit RST_Direction = 0xF94.2
#bit INT_Direction = 0xF93.0
#bit WAKE_Direction = 0xF94.1


INT temp,command1;
int new_rx;

#INT_EXT
void EXT_isr(void)
{
new_rx = true;
}




void main()
{
TRISD3=0;

////////////////

CS_Direction = 0; // Set direction to be output
RST_Direction = 0; // Set direction to be output
INT_Direction = 1; // Set direction to be input
WAKE_Direction = 0; // Set direction to be output


Delay_ms(5);
setup_spi(SPI_MASTER | SPI_MODE_0 | SPI_CLK_DIV_4); // Initialize SPI module
pin_reset(); // Activate reset from pin
software_reset(); // Activate software reset
RF_reset(); // RF reset
set_WAKE_from_pin(); // Set wake from pin
set_long_address(ADDRESS_long_2);
set_short_address(coord_address_short); // Set short address
set_PAN_ID(PAN_ID); // Set PAN_ID

init_ZIGBEE_nonbeacon(); // Initialize ZigBee module
nonbeacon_PAN_coordinator_device();
set_TX_power(31); // Set max TX power
set_frame_format_filter(1); // 1 all frames, 3 data frame only
set_reception_mode(1); // 1 normal mode
delay_ms(10);
enable_int();
pin_wake(); // Wake from pin


ext_int_edge(H_to_L);
enable_interrupts(INT_EXT);
enable_interrupts(GLOBAL);


printf(" RESET - THIET BI THU \r\n");


while (new_rx)
{
new_rx = false;
temp = read_ZIGBEE_short(INTSTAT); // Read and flush register INTSTAT
read_RX_FIFO();
command1=DATA_RX[0];
printf("|Gia tri:%D \n",command1);
delay_ms(200);
}
}



Nhưng ngắt tại chân RB0 lại ko hoạt động. Khi có dữ liệu gửi tới mà ngắt lại ko xảy ra.