Currently, I'm trying to implement the Timer to the EXTI.
Especially, I'd like to watch the toggle input signal by EXTI in limited time.
and I want to make a ACK signal like the following image
If I set the count 3 toggle signal but real input signal is 2 then turn on the Timer then what if there is nothing toggling signal in limited time then I want to make ACK is 0.
So I've implemented the Timer which was I could set the time period.
But the problem is my implementation is suck and kill me.
I need your help. How do I implement watching to the periodic toggle input signal by EXTI in limited time ?
If input toggle signal active high while in limited time, then I want to set "ack" to 1, if not ack to 0.
Could you please help me how do I implement this?
int toggle_count = 0;
toggle_count = 0;
capture_toggling = 3; // this is start signal as being triggerring once by external.
if(TIM_GetITStatus(TIM2,TIM_IT_Update) != RESET)
ack = 0x00; // there is no capture signal in limited time.
TIM_Cmd(TIM2, DISABLE); // Could I use Timer like this?
TIM_ClearITPendingBit(TIM2, TIM_IT_Update); // Clear the interrupt flag
if(EXTI_GetITStatus(EXTI_Line1) != RESET)
ack = 0x01; // capture toggling signal
TIM_Cmd(TIM2, ENABLE); // Could I use Timer like this?
// EXTI watching the toggling signal.
// If capture the toggling signal then TIM_Cmd Eanble
Could you help me please?