GStreamer serial plugin
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Introduction
Gstreamer serial plugin (gst-serial) provides the tools to interact with a serial port using gstreamer. It includes the serialsrc element which allows the user to capture from a given serial port. It allows the control of the transfer baudrate but it can easily be extended to expose any additional configuration.
Build instructions
$ cd gst-serial $ ./autogen.sh $ ./configure $ make all install
gst-inspect output
Factory Details:
Rank none (0)
Long-name Serial port source
Klass Source/serial
Description Reads data from serial port
Author Edison Fernandez <edison.fernandez@ridgerun.com>
Plugin Details:
Name serial
Description Elements used to interact with serial port data
Filename /home/efernandez/work/Gstreamer/gst_1.8.1/out/lib/gstreamer-1.0/libgstserial.so
Version 0.1.0
License Proprietary
Source module gst-serial
Binary package RidgeRun elements
Origin URL http://www.ridgerun.com
GObject
+----GInitiallyUnowned
+----GstObject
+----GstElement
+----GstBaseSrc
+----GstPushSrc
+----GstSerialSrc
Pad Templates:
SRC template: 'src'
Availability: Always
Capabilities:
ANY
Element Flags:
no flags set
Element Implementation:
Has change_state() function: gst_base_src_change_state
Element has no clocking capabilities.
Element has no URI handling capabilities.
Pads:
SRC: 'src'
Pad Template: 'src'
Element Properties:
name : The name of the object
flags: readable, writable
String. Default: "serialsrc0"
parent : The parent of the object
flags: readable, writable
Object of type "GstObject"
blocksize : Size in bytes to read per buffer (-1 = default)
flags: readable, writable
Unsigned Integer. Range: 0 - 4294967295 Default: 4096
num-buffers : Number of buffers to output before sending EOS (-1 = unlimited)
flags: readable, writable
Integer. Range: -1 - 2147483647 Default: -1
typefind : Run typefind before negotiating
flags: readable, writable
Boolean. Default: false
do-timestamp : Apply current stream time to buffers
flags: readable, writable
Boolean. Default: true
port : The serial port that will be read.
flags: readable, writable
String. Default: "/dev/tty0"
baudrate : The baudrate to be used for the serial port. See termios.h for a list of valid values.
flags: readable, writable
Unsigned Integer. Range: 50 - 4000000 Default: 115200
stop-bits : Number of stop bits to use
flags: readable, writable
Unsigned Integer. Range: 1 - 2 Default: 1
parity : Parity to be used
flags: readable, writable
Enum "GstSerialSrcParity" Default: 0, "none"
(0): none - No parity
(1): even - Even parity
(2): odd - Odd parity
data-bits : Number of data bits to be used
flags: readable, writable
Enum "GstSerialSrcDataBits" Default: 3, "CS8"
(0): CS5 - 5 data bits
(1): CS6 - 6 data bits
(2): CS7 - 7 data bits
(3): CS8 - 8 data bits
flow-control : Use hardware flow control
flags: readable, writable
Boolean. Default: false
canonical : Enable canonical mode
flags: readable, writable
Boolean. Default: true
Test pipelines
gst-launch-1.0 -v serialsrc port=/dev/ttyUSB0 baudrate=115200 ! meta/x-klv ! metasink
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