continuous touch on the screen using ADB shell

Question

I want to keep the camera button pressed to take continuous snaps. I tried this code:

#!/system/bin/sh
am start -n com.android.camera2/com.android.camera.CameraLauncher
sleep 1
count=1
x=2
while [ $count -le 1 ]
do 
    input touchscreen tap 560 1800
    input touchscreen tap 560 1800
    input touchscreen tap 560 1800
    input touchscreen tap 560 1800
    input touchscreen tap 560 1800
    input touchscreen tap 560 1800
    input touchscreen tap 560 1800
    input touchscreen tap 560 1800
done

But it does not hold the button. It taps with a delay.

Then I tried this:

 sendevent /dev/input/event0 3 53 300
 sendevent /dev/input/event0 3 54 400
 sendevent /dev/input/event0 3 48 5
 sendevent /dev/input/event0 3 58 50
 sendevent /dev/input/event0 0 2 0
 sendevent /dev/input/event0 0 0 0
 sleep 1
 sendevent /dev/input/event0 0 2 0
 sendevent /dev/input/event0 0 0 0

this code gets executed but the effect is not seen on the touchscreen

Answer 1

This will work adb shell input swipe 660 2200 660 2200 5000

The last value is duration