(1)i am working on f28335 experiment kit.
(2)i have configured ePWM1 tripzone tz4 interrupt.
(3)inside ISR i am making GPIO 34 low. so, when i am giving low signal to TZ4(GPIO15), GPIO 34 goes low. everything works fine.
(4)problem: when i changed GPIO34 to GPIO12(as it is required because it is near to GPIO15), GPIO12 becomes low at starting only. also PWM are tripped from start only without waiting for low signal at GPIO15.
NOTE: GPIO12 and GPIO15 are shorted with 10KOhm resistance in between. But, GPIO34 is not connected with GPIO15. this is the only difference between 2 GPIO.
What i want is: GPIO12 to go low if and only if GPIO15 goes low.
please help.