A few days ago,I used the eight-pin microcontroller STC15F104E to make an external interruption. Falling the edge triggers, but when the frequency of the trigger signal was too high(> 6HZ), there would be no interruption...Have anyone used this microcontroller? Does this microcontroller itself have any problem?
EX0 = 1; // open external interrupt IT0 = 1; // falling edge trigger
/ **********************************External interrupt service routine*********************************** /void OutServy (void) interrupt 0{ GPIO_jdq = 0; temp = 0; GPIO_LED = ~ GPIO_LED; (frequency is too high the led not jump, that did not enter the interruption) TR0 = 1;}