API for Serial communication about flutter_blue

[pauldemarco]

That's the idea 👍

For each step you would need the following:

1. Scan for nearby devices. FlutterBlue.instance.scan
2. Connect to device. FlutterBlue.instance.connect
3. Discover services on device. device.discoverServices
4. Transfer data by reading and writing to a service's characteristic. device.readCharacteristic device.writeCharacteristic

[pauldemarco]

Hi @eugenelet,

Are you referring to Bluetooth classic's serial port profile (SPP)? If so, there really isn't a BLE equivalent. Depending on your data rate needs, you could create a Bluetooth Low Energy service that offers similar functionality, which then could be handled by this library.

[eugenelet]

Hi @pauldemarco

Yeah that's what I need. Where can I start with that using this library? As from the functions listens in this plugin, there's readCharacteristic, services, readDescriptor, etc. I'm not sure which should I use to implement this function.

[pauldemarco]

@eugenelet I would run through some basics of Bluetooth Low Energy, and see if an official service has what you need.

In a nutshell, you could use this library to:

1. Scan for nearby devices.
2. Connect to device.
3. Discover services on device.
4. Transfer data by reading and writing to a service's characteristic.

[eugenelet]

@pauldemarco Thanks for helping out! It's been days for me looking around for a SPP solution using Flutter. So the basic idea is I've to use readCharacteristic and writeCharacteristic provided by this plugin to implement this function?

[eugenelet]

Thanks for the info. I'll try it out and let you know if it works. 😀

[pauldemarco]

Sounds good. I'll close this for now, if you run into issues we can reopen.

[faridingithub]

Hi
I am running into a similar issue. I am trying to connect to my laptop. The example code can find the laptop (although it does not show the assigned name and just shows blank.)

When I try to connect it does not even when I increased the timeout.

Thanks for the help.

[ayushin]

Anybody else is working on this?