Connecting to a USB device from an app after reboot
I want my Android app (Lollipop+) to read information from an USB device (PL2303) using a serial port. The app works fine from the moment I connect the USB device until the device shutdown. The problem is that, after a reboot, the device is recognized but I cannot establish a connection with it until the device is unplugged and plugged again.
The Android device is going to be installed in a vehicle, and the USB device will always be connected, so I need my app to recognize and use it after every reboot.
The device is rooted, so any possible solution (like restarting the USB controller through commands... if it has any sense) is welcome. I have tried to send a "android.hardware.usb.action.USB_DEVICE_ATTACHED" broadcast manually, but nothing happens.
I read this post, but it didn't help.
android usb edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
add a comment |
I want my Android app (Lollipop+) to read information from an USB device (PL2303) using a serial port. The app works fine from the moment I connect the USB device until the device shutdown. The problem is that, after a reboot, the device is recognized but I cannot establish a connection with it until the device is unplugged and plugged again.
The Android device is going to be installed in a vehicle, and the USB device will always be connected, so I need my app to recognize and use it after every reboot.
The device is rooted, so any possible solution (like restarting the USB controller through commands... if it has any sense) is welcome. I have tried to send a "android.hardware.usb.action.USB_DEVICE_ATTACHED" broadcast manually, but nothing happens.
I read this post, but it didn't help.
android usb edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
add a comment |
I want my Android app (Lollipop+) to read information from an USB device (PL2303) using a serial port. The app works fine from the moment I connect the USB device until the device shutdown. The problem is that, after a reboot, the device is recognized but I cannot establish a connection with it until the device is unplugged and plugged again.
The Android device is going to be installed in a vehicle, and the USB device will always be connected, so I need my app to recognize and use it after every reboot.
The device is rooted, so any possible solution (like restarting the USB controller through commands... if it has any sense) is welcome. I have tried to send a "android.hardware.usb.action.USB_DEVICE_ATTACHED" broadcast manually, but nothing happens.
I read this post, but it didn't help.
android usb edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
I want my Android app (Lollipop+) to read information from an USB device (PL2303) using a serial port. The app works fine from the moment I connect the USB device until the device shutdown. The problem is that, after a reboot, the device is recognized but I cannot establish a connection with it until the device is unplugged and plugged again.
The Android device is going to be installed in a vehicle, and the USB device will always be connected, so I need my app to recognize and use it after every reboot.
The device is rooted, so any possible solution (like restarting the USB controller through commands... if it has any sense) is welcome. I have tried to send a "android.hardware.usb.action.USB_DEVICE_ATTACHED" broadcast manually, but nothing happens.
I read this post, but it didn't help.
android usb android usb edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
edited Nov 14 '18 at 14:17
Fantômas
32.8k156390
32.8k156390
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
asked Nov 14 '18 at 12:55
sysseonsysseon
4610
4610
add a comment |
add a comment |
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