Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [baudrate]

Often misused term, when "bit-rate" is meant.

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How do some microcontrollers implement baud rates even though it uses crystal frequency not scalable to standard baud rates?

I just realized that the 8051 family uses 11.0592 MHz and its multiples so as to generate standard baud rates. But there are SoCs which use 15 MHz. How do they do this then?
Febin Sunny
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How do two UARTS know which baud rate to use?

I am reading about the standard protocol for UART and I think that if the receiving UART does not have any idea on what baud rate the data was transmitted, there would be lots of problems. If the assumed baud rate is lower than the baud rate in…
Batibot323
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Baud rate vs. Bit rate

When we initialize a serial communication, we usually have to set the baud rate (e.g. 115200) I notice that many people assume that 115200 means 115200 bits per second. However, each baud(signal change) can encode more than 1 bit. baud 115200 means…
Weidong Guo
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High-speed computer interface with an Arduino

I'm planning a project with an Arduino that involves handling a lot of requests from a host computer, and the standard 115200 maximum baud over serial isn't sufficient. I'd like to be able to get 1Mbps full duplex if possible, but 400Kbps+ full…
Polynomial
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Is there any reason why using a baud rate of 31250 on an Arduino MIDI project could cause problems?

I have a 600 pulse per revolution optical encoder (and some other stuff) connected to an Arduino Uno (tried it on r2 and r3) through the interrupt pins 2 and 3. While waiting for a my MIDI jack to arrive in the mail, I tried connecting my setup to…
The Phil Lee
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MSP430 serial communication failing in cold weather

I have a product using the MSP430 microprocessor, which has been selling for a couple years now. One of the MSP430's jobs is to communicate over async serial to a low-power radio. With the onset of this winter, there has been an unacceptable…
markrages
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What is the maximum acceptable baud rate error for RS-232 serial communication?

What is the maximum clock difference between a transmitter and receiver for error-free asynchronous serial communication?
markrages
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Unexpected Atmega16 response over UART

Unexpected Atmega16 response over UART Brief problem summary I have flashed an Atmega16 with code that should result in the Atmega16 sending back whatever character I send to it via a terminal. I get a response, but it is rarely ever the character I…
daviegravee
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Does a baudrate in serial communication (USB or RS232) need to be exact?

In serial communication, does the baudrate mean we have to use the exact clock speed or is it a range of speeds that we can use? and if it's an exact value, how exact should it be ? for example, can i use 555 as the clock of a serial communication…
soundslikefiziks
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Symbol rate (baudrate) estimation

I am looking for a algorithm that can detect the rate of symbols in a base-band signal. The Gardner method is a way to cancel out the timing drift and synchronize the receiver to sender when the symbol rate (number of samples per symbol) is known.…
Isaac
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Controller Area Network (CAN), high speed and low speed

Is the difference between high- and low-speed CAN only with respect to baud rate values? Is the CAN transceiver programmable for a range of speeds or is it fixed for a specific value? For example, can a high-speed transceiver can be programmed for…
hemanth
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Baudrate of DS18B20

I'm trying to connect a DS18B20 to my Beaglebone Black. Now I wan't to determine the Baudrate but can't find it in the Datasheet of the DS18B20. In the internet I saw different ones (9600, 19200). Can I simply choose one the Sensor pick's up on it?…
magu_
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PIC18F4550 Asynchronous USART Baud Rate

I am trying to implement a USART routine to transmit a string using PIC18F4550. I intend to transmit the message at 115200 baud rate in asynchronous mode. My PIC18F4550 is running at 48MHz using 20MHz external crystal and HSPLL_HS mode. According to…
Chris Aung
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Is there hardware compatibility between CAN 2.0 High Speed, Low Speed and CAN-FD?

I am studying CAN interface hardware for the design of an automotive scanner. So far, I have identified the following types of CAN: CAN 2.0 High-Speed: bit rate up to 1Mbps CAN 2.0 Low Speed: bit rate above 40Kbps up to 125Kbps CAN-FD: bit rates…
Daniel
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Xbee not responding timely. Large delay between each transmission

I have prepared a setup for 2 Xbees one connected to the PC via XCTU and the other interfaced with Atmega 168. The terminal software will send 1 and the xbee with Atmega 168 will return 1. The code is as…
Subhankar Ganguly
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