You should also have a look at How to do Arduino Serial communication, because in that tutorial, I have combined all Arduino Serial Projects. Anyways, let’s get started with How to use Arduino Serial Flush: How to use Arduino Serial Flush? Arduino Serial Flush is used to flush the data send through Arduino Serially. The Arduino Reference text is licensed under a Creative Commons Attribution-Share Alike 3.0 License. Find anything that can be improved? Suggest corrections and new documentation via GitHub. Doubts on how to use Github? Learn everything you need to know in this tutorial. The Arduino Reference text is licensed under a Creative Commons Attribution-Share Alike 3.0 License. Find anything that can be improved? Suggest corrections and new documentation via GitHub. Doubts on how to use Github? Learn everything you need to know in this tutorial. I'm starting to build my first Arduino project but I'm running into some problems with serial communication. I get serial data from the console and store it in a char array called 'data'. Then, when I send a new console message to the Arduino, I want it to clear the existing 'data' array and store only the new data in that array. The problem I'm having with both Serial.print and lcd.print is that the values are constantly moving and I can't really have a good look at them while moving the robot. I was thinking to call something like Serial.clear before displaying anything else and that would just keep things steady and in one place, changing only the values.
Moreover, I hope that’s gonna be my last lecture on Arduino Serial Port because I have covered it in full detail. Although I am gonna summarize all the Arduino Serial Posts in a single Post. You should also have a look at How to do Arduino Serial communication, because in that tutorial, I have combined all Arduino Serial Projects. Anyways, let’s get started with How to use Arduino Serial Flush:
How to use Arduino Serial Flush ?
- Arduino Serial Flush is used to flush the data send through Arduino Serially.
- When we send data on a serial port through arduino then we use the command Serial.print or Serial. write.
- So when the data is sent it is sent using interrupt and when we use Arduino Serial Flush command then it makes sure that all the data is sent through serial port and nothing’s left in the stream.
- In simple words, it clears the serial data stream and kind of refresh it and also makes you ready to send next data.
- Here’s the syntax to use Arduino Serial Flush command:
- In the above code I have simply added the Arduino Serial Flush code and now it will take a little more time to complete because now it will make sure that all the data has been sent.
So, that’s all for today. I hope you guys have enjoyed this short Arduino Serial Flush tutorial. If you have any questions, please ask in the comments. Take care !!! 🙂
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I'm reading data from 9 different sensors for my robot and I need to display them all steadily, in the same window so I can compare the values and see if any of the readings is off.
The problem I'm having with both Serial.print and lcd.print is that the values are constantly moving and I can't really have a good look at them while moving the robot.
I was thinking to call something like Serial.clear() before displaying anything else and that would just keep things steady and in one place, changing only the values.
From what I found so far, Serial.print(17,BYTE) for instance is no longer supported (Calling the ESC key).
So...for those with a bit more Arduino experience...what is the proper way to do this?
EugenEugen89677 gold badges2424 silver badges5353 bronze badges
15 Answers
The Arduino serial monitor isn't a regular terminal so its not possible to clear the screen using standard terminal commands. I suggest using an actual terminal emulator, like Putty.
The command for clearing a terminal screen is ESC[2J
To accomplish in Arduino code:
Source:
http://www.instructables.com/id/A-Wirelessly-Controlled-Arduino-Powered-Message-B/step6/Useful-Code-Explained-Clearing-a-Serial-Terminal/
jjzjjzhttp://www.instructables.com/id/A-Wirelessly-Controlled-Arduino-Powered-Message-B/step6/Useful-Code-Explained-Clearing-a-Serial-Terminal/
60111 gold badge99 silver badges1919 bronze badges
There is no way to clear the screen but, a really easy way to fake it can be printing as much
Serial.println();
as you need to keep all the old data out of the screen.uDalilluuDalillu
I have found that ASCII 12 make a Form feed, that is a new page. here is a wikipedia definition
'Form feed is a page-breaking ASCII control character. It forces the printer to eject the current page and to continue printing at the top of another'
The code is
Arduino Terminate doesn't support the character but Putty a light open source telnet client can do it
An Example of the code
Gustavo Adolfo MejíaGustavo Adolfo Mejía
You could try:
Which will provide a carriage return, returning to the start of the line every iteration - which should do what you're chasing? (Especially if everything is fixed width).
durron59727.6k1111 gold badges7676 silver badges140140 bronze badges
CreasoteCreasote
Found a stupidly simple way to fix this issue. Just resize the terminal window to only 1 line high and it will be a lot easier to read!
Dok CollictDok Collict
the best way I can think of is using processing there are a few introductions on the net like displaying serial data, arduino graph and arduino radar
Since Arduino is based on processing its not that hard to learn
Since Arduino is based on processing its not that hard to learn
SibsterSibster
ESC is the character _2_7, not _1_7. You can also try decimal 12 (aka. FF, form feed).
Note that all these special characters are not handled by the Arduino but by the program on the receiving side. So a standard Unix terminal (xterm, gnome-terminal, kterm, ...) handles a different set of control sequences then say a Windows terminal program like HTerm.
Therefore you should specify what program you are using exactly for display. After that it is possible to tell you what control characters and control sequences are usable.
A.H.Arduino Clear Serial Data
A.H.48.9k1111 gold badges7272 silver badges102102 bronze badges
It's not possible to clear the Serial Monitor window based on incoming serial data.
I can think of a couple of options, the simplest (and cheatiest) is to use
println()
with a fixed width string that you've generated that contains your sensor data. The Arduino IDE's Serial Monitor's
Autoscroll
checkbox means if you persistently send the fixed width string (with 500ms delay perhaps) this will give the impression that it's updating once it gets to the bottom and starts scrolling. You could also shrink the height of the window to make it look like it only has one line.To accomplish a fixed width string that's suitable for serial
println()
you'll need functions to convert your sensor values to strings, as well as pad/trim them to a persistent size. Then concatenate the values together (including separators if it makes the data easier to read)An output of something similar to this is what i'm hinting at:
All things considered, this isn't a great solution but it would get you a result.
A far smarter idea is to build another program outside of Arduino and it's IDE that listens to the com port for sensor values sent from the Arduino. Your Arduino program will need to send a message your external program can unambiguously interpret, something like
1=0.5;
where 1 = sensor ID and 0.5 = sensor value. The external program would then keep these values (1 for each sensor). The external program can then display this information in whatever way you'd like, a nice console output would be relatively easy to achieve :-)C#
has .NET
's serialport
class which is a pleasure to use. (most of the time!)Python has a module called
pyserial
, which is also easy great.Either language will give you much greater control over console output, should you choose to proceed this way.
jonjon3,66833 gold badges1919 silver badges3434 bronze badges
If you change baudrate for example back and forth it clears the Serial Monitor window in version 1.5.3 of Arduino IDE for Intel Galileo development
Gökhan KurtGökhan Kurt
rEKIMcarnaterEKIMcarnate
theQuestionMantheQuestionMan
imprime en linea los datos con un espaciado determinado, así tendrás columnas de datos de la misma variable y será más claro
Print all data in line, so you have rows with the data you need, i just solve the same problem like this, just make sur you had asignad a constant data size and spacement between, I made this
Manuel Estrada RamosManuel Estrada Ramos
If one of you guys are using virtual terminal in proteus and want to clear it just add Serial.write(0x0C);and it gonna work fine
Abdeljalil HANOUBAbdeljalil HANOUB
I made this
simple function
to achieve this:It works well for me in the
default terminal
Ravi ShekharRavi Shekhar
Kevin LillyKevin Lilly