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External Interrupt..INT0
hello all,
I am working with AT89C51CC01 which based on 8051.
I had write one program of external interrupt. See the code as follows.
CODE:void ex0_isr (void) interrupt 0
{
CCAP1H = 0x5A; // 35% Duty Cycle
}
void main (void)
{//Configure INT0 (external interrupt 0) to generate an interrupt on the falling-edge of /INT0 (P3.2).
//Enable the EX0 interrupt and then enable the global interrupt flag.CMOD = 0×02; // Setup PCA timer
CL = 0×00;
CH = 0×00;CCAP1H = 0×10; // 75% Duty Cycle
CCAPM1 = 0×42; // Setup PCA module 1 in PWM mode.IT0 = 1; // falling edge on /INT0 (P3.2)
EX0 = 1; // Enable EX0 Interrupt
EA = 1; // Enable Global Interrupt FlagCR = 1; // Start PCA Timer.
while (1)
{
}
}In this code without interrupt Duty cycle of PWM signal is 75% and when interrupt occur then Duty cycle is 35%.
This program works perfectly.Is there possible to after interrupt then after some time program run normally (Same like without interrupt).
For example i want after interrupt after 5 min i come again into the same program routin.Please give ur suggestion related to this problem.
Thanks in advance
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