Hello to everyone. This is my Code:
void FIQ_Handler(void) __irq { T1CLRI = 0x55; // T1CLRI is an 8-bit register. // Writing any value to this register clears the Timer1 interrupt. GP4SET = 0x00040000; // P4.2 to "1" to see interupt-start on oszilloscope GP4CLR = 0x00040000; // P4.2 to "0" to see interrupt-ready on oszilloscope }
This code is execute 200000 times per second (timer-interrupt) On Oszilloscope i see a Time_jitter of about 200ns. There is a 120ns wide posetive Impulse every 5us. But the starting point jitters about 200ns. How can i reduce this Jitter? My uC is a ADuC7126