hello, every time android wakes up from sleep, a window opens for usb application, i always allow open in realdash. but every time it wakes up from sleep it asks, how can i fix this, let it connect automatically when it wakes up from sleep
RealDash cannot bypass Android security/permission systems. If USB device reports of not having a permission to read it, it must be asked from the user or connection will not be established.
The allow option was selected. But it asks again every time. What do those who use the dashboard do? Do they click the OK button every time they get in the car?
Yes, on some Android version this seems to be the case that every time USBs are enumerated by OS (bootup, disconnect/connect), permission is asked again.
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I have can analyzer v8.0, what should I do with its speed? I use 1228800, but for example, when I open the door, it appears after 1 second. When I turn on the headlights, it appears with a delay. Is 115200 the best?
No, to my experience 1228800 is the best baud rate option on this device. Something else is slowing down your CAN messages.
Should the resistance bridge on the device be attached or should I remove it?
That depends in your CAN bus is already terminated or not. Typically it is by the devices on the CAN bus and jumper for the end terminator resistor can be removed from the adapter.
Only way to know for sure is to measure the resistance of the CAN bus.