Knife
Member level 2
Hi everybody
I wanna measure PWM signal duty cycle with STM8S Capture Module. PWM signal duty is changing between 0% and 100%. System start 0%, 100% or any value between 0% and 100%.
I'm using capture interrupt and I'm measuring exact value of PWM duty. But I have a problem. If the system will start at 0% or %100, I can't handle that value. Because there isn't any changes of signal edge.
I have an idea. I can use one extra I/O port to control signal level. But I wanna ask you first, is there any software solution without using I/O pin ? Could we know capture pin level (high or low) ?
I wanna measure PWM signal duty cycle with STM8S Capture Module. PWM signal duty is changing between 0% and 100%. System start 0%, 100% or any value between 0% and 100%.
I'm using capture interrupt and I'm measuring exact value of PWM duty. But I have a problem. If the system will start at 0% or %100, I can't handle that value. Because there isn't any changes of signal edge.
I have an idea. I can use one extra I/O port to control signal level. But I wanna ask you first, is there any software solution without using I/O pin ? Could we know capture pin level (high or low) ?