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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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How mode of operation will be decided in SPI protocol?

How mode of operation will be decided in SPI protocol? - I read that there are four mode of operations available in SPI Communication(Mode - 0, 1, 2, 3), so when we do any device interfacing using SPI Protocol how to decide which mode we should…
user2621476
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Programming uart of cortex-m3 (Microsemi SmartFusion 2)

I am programming a basic uart echo on cortex-m3, but i am getting giberish on putty used 100 MHz clock frequency for cortex-m3 Baud rate 57600 What might be the reason for giberish output ,does uart baud rate be in some multiple or in some relation…
G.ONE
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Linux - How to set custom baud rate to connected device

I'm trying to set a custom baud rate of 10400 to my connected device. I'm using the Qt Creator IDE in order to interact with the device. However, through several methods, I'm unable to change the baud rate from 9600, which is the default baud…
xcyl40
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Pro Micro don't receiving anything via Serial1

I'm using Pro Micro (16 MHz, 5V) board and I want to read serial data which are coming from external UART device (for a test I connect TX1 and RX0 pins to FTDI cable which is connect to computer). Baudrate is 115200. Chosed board in Arduino software…
d3jck0
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Linux set higher baud rate and associated settings

Input hardware: BeagleBone Black, with some GNU/Linux distro running on it. What I want to achieve: I want to set some UART peripheral to 921600 baud value, and be able to set the other serial-associated settings (e.g. start/stop bits, parity, data…
mariusmmg2
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PIC32MZ2048ECH144 USART- Junk characters transmitted

I am new to MPLAB X Harmony framework and also in working with microcontrollers. I am working on PIC32MZ2048ECH144. I wanted to transmit a simple string using USART and see it displayed in RealTerm terminal.(I have tried HyperTerminal also.) …
NewBieToµC
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PIC32MX795F512H UART communication to RS232

I am currently working for the first time with a PIC microcontroller. In the code I specified exactly which PIC, compiler, etc I am using. Maybe this is of help. I am trying to set up UART communication on the PIC32 and send a hex code like 0x41 for…
Guido Claessen
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UART communication dsPIC33EP256MU810

I'm very much new to Microcontroller programming. I'm using MplabX v3.26 as IDE XC16 compiler PICKit 3 p33EP256MU810 (dspic) for programing I have written very simple program to blink LED and send few characters over UART, please refer to…
amg
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Setting /dev/ttyS0 baud rate to >115200

I am trying to set the baud rate of the serial port (/dev/ttyS0) to 1Mb (1000000). I've tried writing code using cfsset{i|o}speed() + tc{g|s}etattr(). Anything >115200 is ignored. #include #include #include #include…
jski
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Python serial, losing data after switching baudrate

I try to read a utility meter using python's serial module (and a USB to serial converter (FTDI) with an optical read head. It uses the protocol described in IEC 62056-21). The setup is known to work with other software. After sending b'/?!\r\n' at…
Jay Christnach
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How to set COM Port baud rate to 921600 on Windows?

Problem: How to access a device whose baud rate is 921600 from Windows 7 PC. I have an embedded device and I used to connect to this device through USB Serial Port at a baud rate of 115200. Now, the embedded device's baud rate is changed to 921600. …
S Kal
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Terra Term Macro Baud Rate Adjustment

I'm trying to make a macro for adjusting the baud rate of radios but I've run into some trouble and I haven't been able to find a solution through google search. I'm using the application terra term. 'Link macro first. Use 'connect macro' is the…
Tester123
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Change ttyAMA0 Serial BaudRate at runtime (MONO)

I have a problem with a FPS sensor connected via ttyAMA0 serial. Its default speed when it switchs on is 9600 but some functions work properly only at 115200. So my request is how to change the serial baudrate at Runtime. I explain (I use C# with…
Luca Menghini
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Finding characters per sec using asynchronous mode

How many characters per sec(7bits+parity) can be transmitted over 2400bps line in asynchronous mode. I calculated it to be 300 but the book says it is 240....how?
Khan
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atmega8 UART- doesn't show character in realterm

Hi i'm new to this and i need help. It's suppose to just show the 'S' in the realterm instead it gives 'null'. What would be the problem? could it be the register? or the code itself? #include #include void…
user2211932
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