ANMIAN

원문링크 : https://help.github.com/articles/caching-your-github-password-in-git/

If you clone GitHub repositories using SSH, then you authenticate using SSH keys instead of a username and password. For help setting up an SSH connection, see Generating SSH Keys.

git config --global credential.helper wincred

원문 링크 : http://www.armadeus.com/wiki/index.php?title=Serial_ports_usage_on_Linux

http://unix.stackexchange.com/questions/117037/how-to-send-data-to-a-serial-port-and-see-any-answer

Changing port parameters

To get current parameters

# stty -F /dev/ttyUSB0

speed 115200 baud;

intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = ^J;

eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W;

lnext = ^V; flush = ^O; min = 1; time = 0;

-brkint ixoff -imaxbel

-iexten -echoctl

To only get actual speed:

# stty -F /dev/ttySMX0 speed

115200

By default serial ports are configured as terminal emulator. If you want to use them as "raw" serial port you will have to do first (example for port 1):

# stty -F /dev/ttyUSB1 raw

# stty -F /dev/ttyUSB1 -echo -echoe -echok

To change baudrate of port 2 to 115200 :

# stty -F /dev/ttyUSB2 115200

stty -speed 19200 < /dev/ttyS1
stty -speed 19200 -f /dev/ttyS1

Sending/Receiving data

Send

# echo "HELLO" > /dev/ttyUSB0

echo -e "\x7E\x03\xD0\xAF und normaler Text" > /dev/ttyS0

The echo -e command enables the interpretation of backslash escapes.

To receive data (ASCII in that case):

# cat /dev/ttyUSB0

RFCOMM

frame types

  - SABM (Set Asynchronous Balanced Mode command)

    : connect with remote server channel

  - UA (Unnumbered Acknowledgement response)

    : response for SABM/DISC

  - DM (Disconnected Mode response)

    : when RFCOMM is disconnected

  - DISC (Disconnect command)

    : disconnect with remote device

  - UIH (Unnumbered information with header check command and response)

    : send and receive data with remote device.

SCN(Server Channel Number)

Server applications registering with an RFCOMM service interface are assigned a 

Server Channel number in the range 1…30. [0 and 31 should not be used since 

the corresponding DLCIs are reserved in TS 07.10] It is this value that should be 

registered in the Service Discovery Database.

  - MAP, PBAP, HFP can obtain SCN from  SDP.

  - SCN 0 means  control channel.

Supported Control Channel Commands

 - DLC parameter negotiation (PN)

DLCI (Data Link Connection Identifier) 

  - DLCI 0 : control 

  - DLCI even : initializing connection

  - DLCI odd : non-initializing connection

DISC (Disconnect command) 

The DISC command shall be used to terminate an operational or initialization mode previously set by a command. It

shall be used to inform one station that the other station is suspending operation and that the station should assume a

logically disconnected mode. Prior to actioning the command, the receiving station shall confirm the acceptance of the

DISC command by the transmission of a UA response.

UA (Unnumbered Acknowledgement) response

The UA response shall be used by the station to acknowledge the receipt and acceptance of SABM and DISC commands.

C/R (Command/Response)

The C/R (command/response) bit identifies the frame as either a command or a response.

P/F (Poll/Final)

The poll (P) bit set to 1 shall be used by a station to solicit (poll) a response or sequence of responses from the other station.

The final (F) bit set to 1 shall be used by a station to indicate the response frame transmitted as the result of a soliciting (poll) command.