RE: Android Phone first to connect nRF52832 must to scan ? who can help me

Erric Wang — Wed, 11 Jul 2018 03:29:38 GMT

If there are many BLE devices and we have known the device MAC,what we do a scan will take too long time to scan,it is bad. So we want to connect the device by the device mac to save time.

why can we connect to the device by mac,after only once we scan to find the device ,however we rebot our application or smartphone . But no scan once no connect by mac

RE: Android Phone first to connect nRF52832 must to scan ? who can help me

tesc — Fri, 06 Jul 2018 15:50:45 GMT

Hi,

A normal method for connecting to a BLE device from a smartphone is to first do a scan, so that the available devices gets listed, and then the user chooses one of the devices to connect to.

If you want to connect to a device with a known address I think you can do that as well, from the API of the smartphone system. Another way is you can let your application do a scan, and if it finds an advertisement from a given device or with given advertising data you connect to that device.

If you have problems getting any of this to work, can you explain what you do (also attach the code), describe what fails and provide the error messages?

Regards,
Tejre