- Arduino Serial Port Library In Chicago
- Arduino Serial Port Library Hours
- Arduino
- Arduino Serial Port Library Hours
This library creates an 8-bit IO port for Arduino by combining any 8 Arduino pins. With this library, one can send/get direct 8-bit data.
Arduino UNO serial.begin and serial1. Pin 0 and 1 is the native serial port on the uno. You can use it with no problems, however you'll need to disconnect anything. NOTE: I will be using a DHT11 temperature sensor to produce data on the Arduino end. Since this is a tutorial on reading data from the serial port using Python, not Arduino, I recommend visiting a DHT11 tutorial to learn how to print temperature data from the sensor to the serial port (see here, or here). In today’s tutorial, I am going to show you How to use Arduino Software Serial. In my previous tutorial, we have had a look at How to use Arduino Serial Write and How to use Arduino Serial Read. In both of these tutorials, we have done the hardware Serial Communication. But we all know that Arduino has just one Serial Port placed at pins 0 and 1. This video is an in-depth tutorial on how you can use Arduino with your C software via Serial Port library. Please like, comment, and share this video if you liked this video or learnt something. Get the number of bytes (characters) available for reading from a software serial port. This is data that’s which arrived and stored in the serial receive buffer. Syntax: mySerial.available; Example. This is an example for use of SoftwareSerial Library in Arduino and other compatible boards. In code, integrated Library. An example high speed serial data-logger is included. To install the this library, copy the SerialPort folder to the your libraries directory. Try the HelloWorld example first. The API was designed to be backward compatible with Arduino Serial. A number of functions have been added to the API. Read the html files for more information.
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Arduinolibrary for 8-bit IO port
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Weall know that, the arduino gives digital output using “digitalWrite()”function and gets digital input through “digitalRead()” function. Butusing these two functions, it can give output or get input from any one pin - meansat a time it can give output to or take input from single pin only. If anyonewants to interface any 8-bit IO device like 7-segment display, DIP switches orDAC (Digital to Analog convertor) with arduino, it can not give direct 8-bitdigital output to device but instead it has to give output to 8 different pins.The data byte (8-bit) pattern is sent to different pins in form of 1’s and 0’s.for example if data byte is 37h (0011 0111) one has to send these 0 n 1 patternto 8 different pins using digitalWrite() function.
So toovercome this situation here I present 8-bit IO Port (input-output port)library for arduino. Using this library one can send direct 8 bit data to anyarduino board pins configured as a combined 8-bit port or can get 8-bit inputfrom these configured pins. This library clubs any 8 pins of arduino togetherto work as 8-bit IO port. Just one has to select any 8 arduino pins to becombined as 8-bit port and it has to configure its data direction as input oroutput. Data direction is set by character ‘O’ for output or ‘I’ for input.
Thelibrary has only 5 functions. There are two constructors that will create portobject(s), one function to send 8-bit digital output to port pins, one functionto get 8-bit digital input from port pins and one additional function to alter/ set IO direction of port. Here all 5 functions are explained in brief andthere after some examples are given with explanations.
1. IO_Port_8bit(int pin1, intpin2, int pin3, int pin4, int pin5, int pin6, int pin7, int pin8, char dir)
This is constructor. It will createobject(s) of this class and thus it will create one or many 8-bit port(s) by combiningdistinct arduino pins. One has to specify 8 different arduino pins to becombined as port along with data direction as input or output - means portworks as either input or output. The last argument dir in this constructor definesport works as input or output. If means port work as output and ifdir='I', port works as input. The same port cannot work as input and outputboth simultaneously or even alternatively. Also it indicates error if data directionis not selected
2. IO_Port_8bit(int pin1, intpin2, int pin3, int pin4, int pin5, int pin6, int pin7, int pin8)
Thisis another constructor. It will also create object(s) of this class and thus itwill create one or many 8-bit port(s) by combining distinct arduino pins. Onehas to specify 8 different arduino pins to be combined as port. But it does notspecify the data direction as input or output. After creating port object usingthis constructor, one has to set the port direction using set_IO_directionfunction. So this constructor allows programmer to alter port data direction inrun time using this constructor, the same port can work as input or outputalternatively (but not simultaneously)
3. set_IO_direction(char dir)
Thisfunction specifies the input/output direction of port. It has one characterargument that can be 'I' for port as input or 'O' for port as output. If datadirection is not selected, it displays error on serial monitor of arduino
4. send_8bit_data(int byt)
Thisfunction sends 8 bit data to specified pins. Just give int data (must be <255) as an argument that is directly given to 8 different pins. If data is>255 it displays error on serial monitor of arduino.
5. get_8bit_data(void)
Thisfunction gets 8 bit data from specified pins. It returns 8-bit int data byreading status of 8 different pins
Example1: blink 8 leds alternatively at a rate of 1 Hz
#include<IO_Port_8bit.h>
IO_Port_8bitmyport(2, 3, 4, 5, 6, 7, 8, 9, ’O’); //create output port
void setup() // nothing required in setup
{
}
void loop()
{
myport.send_8bit_data(85);// send data toblink all odd LEDs
delay(500);
myport.send_8bit_data(170); send data toblink all even LEDs
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delay(500);
}
Example2: display binary counting pattern on LEDs from 0 to F
#include<IO_Port_8bit.h>
IO_Port_8bitmy8bitport(2, 3, 4, 5, 6, 7, 8, 9);//create port object
void setup()
{
my8bitport.set_IO_direction('O');// set portdirection
}
void loop()
{
int i;
for(i=0;i<16;i++) //send data 0 to 15 to display
{ // binary pattern
myport.send_8bit_data(i);
delay(200);
}
}
Example3: indicate analog input voltage level on 8-bit LED bar graph display
#include<IO_Port_8bit.h>
IO_Port_8bitmyport(2, 3, 4, 5, 6, 7, 8, 9, ’O’); //create output port object
void setup()
{
myport.send_8bit_data(255); //blink all LEDs of bar graph once
delay(500);
myport.send_8bit_data(0);
}
void loop()
{
int level;
level = analogRead(A0); //read analog input voltage
level = map(level, 0, 1023, 0, 80);// limit thevoltage from 0 to 80
//increase or decrease bar graph level asper input
if((level<80) && (level>70))myport.send_8bit_data(255);
elseif((level<=70) && (level>60)) myport.send_8bit_data(127);
elseif((level<=60) && (level>50)) myport.send_8bit_data(63);
elseif((level<=50) && (level>40)) myport.send_8bit_data(31);
elseif((level<=40) && (level>30)) myport.send_8bit_data(15);
elseif((level<=30) && (level>20)) myport.send_8bit_data(7);
Arduino Serial Port Library In Chicago
elseif((level<=20) && (level>10))myport.send_8bit_data(3);
elseif((level<=10) && (level>0)) myport.send_8bit_data(1);
elseif(level0) myport.send_8bit_data(0);
}
Example4: get 8-bit digital input from DIP switches and display value on serialmonitor
#include<IO_Port_8bit.h>
IO_Port_8bitmyport(2, 3, 4, 5, 6, 7, 8, 9); //create port object
void setup()
{
Serial.begin(9600); // initializeserial commu.
myport.set_IO_direction(‘I’); // set port direction
Serial.println('8-bit input porttest');
}
void loop()
{
int input_byt;
input_byt = myport.get_8bit_data(); // read the DIP switch status
Serial.print('received input = '); // and
Serial.println(input_byt); // display its value
delay(1000);
}
Code
the library creates 8-bit IO port from arduino pins and sends/gets 8bit digital output/input
Schematics
IO port sends or gets direct 8bit data from different pins
Author
ambhatt
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Arduino Serial Port Library Hours
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Description
Used for communication between the Arduino board and a computer or other devices. All Arduino boards have at least one serial port (also known as a UART or USART), and some have several.
Board | USB CDC name | Serial pins | Serial1 pins | Serial2 pins | Serial3 pins |
---|---|---|---|---|---|
Uno, Nano, Mini | 0(RX), 1(TX) | ||||
Mega | 0(RX), 1(TX) | 19(RX), 18(TX) | 17(RX), 16(TX) | 15(RX), 14(TX) | |
Leonardo, Micro, Yún | Serial | 0(RX), 1(TX) | |||
Uno WiFi Rev.2 Windows 10 all in one iso. Download Windows 10 AIO Free Full Setup:For Downloading the Full and Final Setup of Win 10 All in one free you have to click on the below download button. | Connected to USB | 0(RX), 1(TX) | Connected to NINA | ||
MKR boards | Serial | 13(RX), 14(TX) | |||
Zero | SerialUSB (Native USB Port only) | Connected to Programming Port | 0(RX), 1(TX) | ||
Due | SerialUSB (Native USB Port only) | 0(RX), 1(TX) | 19(RX), 18(TX) | 17(RX), 16(TX) | 15(RX), 14(TX) |
101 | Serial | 0(RX), 1(TX) |
On Uno, Nano, Mini, and Mega, pins 0 and 1 are used for communication with the computer. Connecting anything to these pins can interfere with that communication, including causing failed uploads to the board.
Arduino
You can use the Arduino environment’s built-in serial monitor to communicate with an Arduino board. Click the serial monitor button in the toolbar and select the same baud rate used in the call to
begin()
.Serial communication on pins TX/RX uses TTL logic levels (5V or 3.3V depending on the board). Don’t connect these pins directly to an RS232 serial port; they operate at +/- 12V and can damage your Arduino board.
Arduino Serial Port Library Hours
To use these extra serial ports to communicate with your personal computer, you will need an additional USB-to-serial adaptor, as they are not connected to the Mega’s USB-to-serial adaptor. To use them to communicate with an external TTL serial device, connect the TX pin to your device’s RX pin, the RX to your device’s TX pin, and the ground of your Mega to your device’s ground.