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Questions tagged [baud-rate]

"baud-rate" refers to the number of signal or symbol changes that occur per unit time. This tag is for questions that get, set, or otherwise manipulate the baud rate.

In telecommunications and electronics, baud (/ˈbɔːd/, unit symbol "Bd") means symbols per second or pulses per second. A "symbol" being one of several voltage, frequency, or phase changes.

Thus a "baud-rate" refers to the number of signal or symbol changes that occur over time—most commonly per second. A baud rate differs from a bit-rate in that a single symbol transition (baud) can communicate more than one bit during the interval, whereas a bit rate is a single bit per interval.

This tag is OS and Language independent, as long as there's a mechanism for manipulating the serial data rate this tag can apply.

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Maximum Beaglebone Black UART baud?

I have been looking around for UART baud rates supported by the Beaglebone Black (BB). I can't find it in the BB system reference manual or the datasheet for the sitara processor itself. I am using pyserial and the Adafruit BBIO library to…
InvictusRex28
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Why In Manchester encoding, the bit rate is half of the baud rate?

I think baud rate is the rate of the symbols, and if each symbol contains n bit, then the bit rate should be n x baud rate In Ethernet( Manchester encoding) ,if bit rate is half of the baud rate, then a symbol contains 1/2 bit ? As far as I know,…
Allan Ruin
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C# SerialPort - Problems mixing ports with different baud rates

I have two devices that I would like to connect over a serial interface, but they have incompatible connections. To get around this problem, I connected them both to my PC and I'm working on a C# program that will route traffic on COM port X to COM…
GrandAdmiral
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Why are the input and output baud rates always the same?

I've got a simple program setting the baud rate for a serial (RS232) port. I'm setting the input and output rates independently using the cfsetospeed() and cfsetispeed() functions. As per the man page, this should be possible provided I use these…
Mike
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PHP to serial with weird baud rates

I am trying to use PHP to send text to an LED sign so I can send support ticket numbers to it. The sign itself is a piece of work; it came from eBay and is poorly made with almost no documentation. After fiddling with it for a while, I was able to…
blueintegral
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C code for non-standard baud rate on Debian/Raspberry Pi

I'm working with a hardware device which only operates with the non-standard baud rate of 625000. I need to connect to and read and write data from this device via a USB port. Hence I've been trying to develop a little C program which will allow me…
user1182556
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SerialPort received data lost at high baudrates when stream contains 0x1A

I am implementing a C# application which reads binary data from a microcontroller at a high baudrate (8 MegaBaud) using an USB-Serial adapter (FTDI FT232H). The problem is when the stream contains 0x1A, sometimes a big chunk of data (thousands of…
nnn
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How to set Android Bluetooth Baud Rate to 19200 programatically?

I'm new to Android and im developping an application to talk with an Actuator via Bluetooth. When trying divers Codes i faced a problem with the Baudrate as the Actuator Bluetooth BaudRate is 19200 while the Android Tablet is 9600. Can anyone tell…
Triki
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Change baudrate in pySerial while connected to device?

I'm trying to write a script for a LCD device called the uLCD32-pt and the issue is that you are required to connect to it with a baudrate of 9600 and in order to get a higher baud rate you have to connect to it, send a change baudrate command, then…
Xenland
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How are serial ports set to 19200 baud in x86 assembly?

I'm supposed to modify an application written in 16-bit assembly which uses serial port. One of the objectives is to support speed of 19200 baud. Most of the resources I've read (for example this) on the Internet show the way of doing it using INT…
AndrejaKo
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Serial Programming for POSIX, non-standard baud rate

I am implementing a simple program in unix that takes a RS232 input and saves it into a file. I've used these references: http://en.wikibooks.org/wiki/Serial_Programming/Serial_Linux and http://www.easysw.com/~mike/serial/serial.html #include…
David Portabella
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Getting faster baud rates with termios

Using Non-Canonical Input Processing, I am reading in the serial data being sent to a Xbee S2B Pro (ZB) using a Xbee Interface XBIB-R-Dev with a "DB9-to-USB" cable. I am using some of the example code from…
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Calculate Thread.Sleep() for bitrate limit

I have a class reading a http stream file. static long CurrentMilliseconds { get { return Environment.TickCount; } } public void ReadFile() { ... while(true) { int r = stm.Read(buf, 0, bufSize); …
albert
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Dealing with serial port at 100 baud rate

I am looking to know if it is possible to read from a serial port at 100 baud rate. As per termio.h there is no provision to set 100 as baud rate. I am working in Linux. The communicating device on the other end is sending data at 100 baud rate and…
user_abh
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changing baud rate on bluetooth SPP connection

I have the requirement to collect bluetooth data from a remote bluetooth device at the rate of 1.15k with bluetooth SPP. I connect to the remote device as follows. try { tmp = device.createRfcommSocketToServiceRecord(MY_UUID); } catch (IOException…
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