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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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Arm assembly / How to fix Termite display problem?

I am using Keil UVision 5 and TM4C123GXL Development Board. It has cortex m4 MCU on it. To display my outputs and enter inputs I use Termite. However, sometimes it displays weird stuff as shown below. When I try reset and run again, It sometimes…
BlackSmith0040
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How to detect if a driver not supports the ioctl command TIOCSSERIAL

I am using USB to RS-232 serial adapters and cannot set the line properties to use custom baud rates on linux (fedora 26 or fedora 32) using: #include #include #include #include #include #include…
The Schwartz
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Baudrate calculation

Think that a MC has an external clock 16MHz and uses internal prescaler @16. It has a embedded code that enables serial at a boudrate of 9600. What is the boudrate if external clock is changed to 8MHz and internal prescaler to 4. Explain why. Can…
Jhin the Virtuoso
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C # Serial.read is reading the characters correctly, even with the wrong BaudRate

I'm creating a software in C # that must read the serial port and when recognizing a String (String already known sent by the arduino with BaudRate 38400) it must inform the baudRate used in the reading. My problem is that no matter what value I put…
JohnX
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What is the link between Baud rate for embedded C pointers

I am reading manuals regarding controlling a device with C,and in general its just playing with addresses; however when we are connected through UART we have the BAUDRATE present. So how putting a value into some address have to do with…
rocko445
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How do I change the baud rate for a LoRa device?

I have a LoRa device that uses a default baud rate of 57600 on a USB port of a raspberry pi. I'd like to experiment with faster serial baud rates. The instructions to change the baud rate after returning from a device sleep state are as follows…
Max
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How to make visible light sensor module

How to make visible light sensor module from existing LDR module (I have one of it). Both of it have same circuit but different sensors. So,I would like to buy phototransistor separately as LDR is slow to respond to 5mm while LED which flickers at…
user12613407
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The best SPI Baudrate Prescaler

my question partains SPI speed. How do i know which prescaler to use based? should it be based on the device that i would like to talk to over the protocol? An example using the HAL library is that it has the following prescaler…
Hakim Marley
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Can I open the serial port 500k baudrated in a hardware-independent way using c #?

For a custom project I need to read the 500k baudrate serial port over rs422 using the c # serial port. My computer has the fintek rs422 / rs485 serial port (F81865). And can support up to 1497600m baudrate. As far as I'm looking on the Internet,…
umuryasinalper
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Ascii characters under certain value not being read via serial

I have setup a remote microcontroller connected to my linux PC that spits out a continuous string of characters. I have configured the port using screen (by issuing screen /dev/ttyS0 57600). I validated the data with od command and got what I…
Mike -- No longer here
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Slow Serial Connection between Arduino and Python

I currently have a project where my goal is to graph (in real time) the air flow going through an air flow sensor. The sensor is connected via IIC to an Arduino Uno, which is then collects the data and sends it to my COM3 Serial line with a baudrate…
Nate Houston
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I/O error when trying to change serial baud in C program after changing with unix STTY

I noticed something weird yet reproducible. I first check my serial port settings: bash-3.1# stty -F /dev/ttyS0 speed 0 baud; line = 0; intr = ; quit = ; erase = ; kill = ; eof = ; start = ; …
Mike -- No longer here
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pic32mz EF UART

Can anyone give me the configuration and code for sending a character in UART? I am using Pic32mz EF starter kit and MPLAB X-IDE v5.15. I tried a code but it is not giving out any UART in tera term or putty. // PIC32MZ2048EFM144 Configuration Bit…
Vibhu
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Why I can't lower my ESP8266's baud rate with AT commands

I want to lower my ESP's baud rate for SerialSoftware but I keep getting "ERROR" responses to commands below. I'm using Arduino Mega and Arduino IDE's serial monitor for commands: AT+CIOBAUD=9600 AT+UART_DEF=9600,8,1,0,3 I tried AT and couple other…
Eic Dafusen
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Run python script remotely using screen

I am using intel upboard as remote machine and MacBook (using Ubuntu Linux) as my local machine. I have python script A.py on local machine which has some variables (lets say a and b). I want to pass the values of the variables to remote file lets…
Govi
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