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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. However, if only two symbols are defined for some system, e.g. "0" and "1", then the baud/bit rates are synonymous.

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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Linux UART slower than specified Baudrate

I'm trying to communicate between two Linux systems via UART. I want to send large chunks of data. With the specified Baudrate it should take around 5 seconds, but it takes nearly 10 times the expected time. As I'm sending more than the buffer can…
l4z6_z
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setting baud rate on dial-up connection win32

I am creating dial-up connection in code in Windows XP and Windows 7 (RasSetEntryProperties). The entries come up with the default baud rate of 19200. Using Win32 how do I change the baud rate in both Windows XP and Windows 7?
Gregor Brandt
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How to Set BaudRate in order to communicate with USB CDC Serial

In the above program im trying to write and read data to Atmel Sama5d3Xplained Board using Java(ie USB4JAVA package) Usb Programming. Someone Please help me to Set BaudRate...so that i can try to communicate with Sama5d3Xplained board in order to…
Ravikiran
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UART communication protocol Arduino

I want to simulate Serial communication on Arduino. Serial communication data is like LOW | bits 0-7 | HIGH. So I did the code below: uint8_t read8() { while(digitalRead(6)); delayMicroseconds(52); uint8_t response = 0; for…
A. L. K.
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Linux/Qt auto detect baud rate?

I'm in a situation where we are hooking up to a device that may speak a variety of different baud rates depending on model. Some of which may be non-standard, like 10000, but that's another problem for another day. Ideally I could use Qt to auto…
While-E
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USART receiving nonsense (STM32F0)

I have an implementation for USART communication from a GPS module to a STM32F091 microcontroller. For some reason I only receive nonsense. I have already tried setting different Baud Rates, but none gave me a proper result. Now I am unsure if maybe…
Kater
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UBoot baud rate parameter

Will the UBoot baud rate parameter for the console argument affect a standalone program accessing the serial port when /sbin/getty is not running? Thanks in advance, Bert
quadmore
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Error while connect to RFID reader: The maximum baud rate for the device is 8190

Hi I have a USB RFID Reader/Writer with name "Silicon labs CP210x", I develop a windows app with C# in Visual studio 2015 that could Read/Write on RFID Card, its worked fine... I change my Windows on my notebook (prev Windows and new Windows are…
Ali
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Configuring module for 115kbps then system resets port to 9600 baud

I'm working on a C program that programs an HM-TRP radio module in a Linux environment, because later I'll be programming about 40 of them and I don't want to type in the individual programming codes all the time to program each one. On my machine I…
Mike -- No longer here
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simpler way to set value based on offset in assembler - 8051 code

I'm trying to invent a version of the following code that runs using fewer clock cycles. This is because I'm making a reliable UART to data converter for two 8051 chips since both their serial ports are taken. Ideally, I want the serial port running…
Mike -- No longer here
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Losing serial data while transferring with high baud rate

I have read your questions about Serial port communication. But we have a problem with serial port communication. One problem that i have seen is that : in high baud rate we lose some data in receiver side. Would you tell me why would this happen?…
zahra
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Is it possible to achieve USB baud rate bigger than 115200 baud on Android?

I am building an Android app that communicates via USB OTG with an Arduino Nano. I'm trying to send data from the Arduino to my phone. My app uses this library. At baud rates <= 115200 Baud it works properly, but if I set the rate for example 230400…
Marcell Molnár
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Auto detect UART baud rate of a working device

I have a device which is continuously sending data through UART. I'm trying to read it using a terminal application on Windows-based PC. The problem is that I don't know at which baud rate the device is sending the data. The data I'm getting at…
Vishal B U
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How to close usb screen session on Raspberry Pi?

I normally use the GNU screen to open virtual terminals on servers so that long running programs can run while I log out or get disconnected. I'm now messing around with a Raspberry pi to which I attached a Sparkfun OpenScale to read out a load cell…
kramer65
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How to use baud rate 4mb with FTDI on OSX?

Is it possible to use a baud rate of 4mb (B4000000) with Apple's FTDI driver? Or is FTDI's VCP driver better? Speeds up to B230400 are defined in termios.h (*), with each speed being defined as the integer matching its speed (unlike Linux). …
Matt
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