bluetooth serial link

1, download header filethe latest Android uses the Bluedroid Bluetooth library. The research Androhid uses the BlueZ Bluetooth library. To BlueZ downloaded a, inside the directory structure and files are different. Search for half a day, search the Android BlueZ.git clone Https://android.googlesource.com/platform/external/bluetooth/bluez2, copy to NDKCopy the dow

again. But I think it might be a supplement to the public address.This is the private address of the resolvable, the Prand part is a randomly generated 24bit value, the hash portion is generated using the following method:hash = ah(IRK, prand)Ah is an SMP part of the random address generation function, Irk is the key (Identity resolving key), the first randomly generated prand part, and then use this algorithm to generate the hash, and then the hash and Prand part into the corresponding bit reg

1. Copy an app in the application list rename to Donothingapp.app (non-system app can replicate successfully) 2. Open Terminal execute the command (you will need to enter a password after execution), note that the MV and Itunes.app have an English space respectively: sudo mv/applications/itunes.app/applications/itunesback.app3.terminal executes the command, noting that the-R and Donothingapp.app each have an English space: sudo cp-r/applications/donothingapp.app/applications/itunes.app　　

Hardware Environment : RS232 to USB Serial cable *Electronic scale * * (I use gg e600y-c type known as heavy instrument)Electronic scale original RS232 data line * *Computer * * Software Environment : RS232 to USB serial cable drive (this can be downloaded from the serial line manufacturer's website, I use Unitek production)Windows7 (32-bit)MSCOMM32 control (This

Because it was a test, I used only a single point computer.Tool: one serial cableMethod: Link The serial port of the computer, and short the 2 and 3rd pointers in the serial line.Reason: The 2nd pointer indicates the sending of data. The No. 3rd pointer indicates acceptance data.C # Software interfaceRun the process:1,

(a) Remote station settings:The simplest approach is to establish a PPP login for a dial-up connection on a remote machine:PPP:OFF:700:700:PPP Acount:/home/ppp:home/ppp/ppploginEstablish the starting directory for the account;# MKDIR/HOME/PPP# chown PPP. /home/pppNote in the newly added line, the following program is used as the landing shell:/home/ppp/ppploginIn fact, it's not a shell program. Instead, the script used to start the PPPD daemon on the remote machine.Its typical form is as follows