December 2007
Intermediate to advanced
348 pages
8h 5m
English
book
Mobile Python: Rapid Prototyping of Applications on the Mobile Platform
by Jürgen Scheible, Ville Tuulos
Content preview from Mobile Python: Rapid Prototyping of Applications on the Mobile Platform
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
7.2. OBEX and RFCOMM
There are two main ways to communicate over Bluetooth with PyS60. OBject EXchange (OBEX) is suitable for transferring files, such as photos or sounds, over Bluetooth. Radio Frequency COMMunication (RFCOMM) is useful for sending and receiving streams of text and raw data, including protocols of your own.
To send anything over Bluetooth, you have to know the recipient's Bluetooth address, which is represented in a string, such as 00:12:d2:41:35:e4. You can find Bluetooth devices and their addresses with Bluetooth scanning. Typically, you have to worry about the raw addresses only if you want to connect to the same device again without scanning.
The Bluetooth address identifies a device. A single device may provide several services. For example, your phone can simultaneously receive files and communicate with a headset and a wireless keyboard over Bluetooth. Each of the services operates on a different channel so they do not interfere with each other. If you want to send a file to another phone, first you have to find out its address and then the channel that is used by the file transfer service.
This might sound a bit complicated and, in the background, it is. However, PyS60 wraps this functionality behind two simple functions: socket.bt_obex_discover() performs service discovery for the OBEX protocol and socket.bt_discover() performs service discovery for RFCOMM. Note that all Bluetooth-related functionality can be found in the socket module, which is described ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.