I’m not very good at PHP and I have a problem.
This is my Code:
echo "PHP WORKS!"; exec("echo 17 > /sys/class/gpio/export"); exec("echo in > /sys/class/gpio/gpio17/direction"); $button_state = exec("cat /sys/class/gpio/gpio17/value"); echo $button_state; ?>'''
It’s embeded in a html page.
The $button_state detects a gpio hardware button on a Raspberry Pi.
Its this line:
$button_state = exec("cat /sys/class/gpio/gpio17/value"); and
At the moment, if i press the button and reload the page, it detects 1.
What i want is that i can press the button and it shows me that the button is pressed, but without reloading. I want it to continusly check the state.. But the rest of the website should function at the same time!
How can I do this?
Thaks for your help!
Source: Ask PHP