ros_indigo_arduino

本文主要是介绍ros_indigo_arduino，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

ros_indigo_arduino

1、arduino_IDE_setup

下载arduino-1.6.9-linux-64bit

解压

xz -d arduino-XXX-tar.xz

tar -xvf arduino-XXX.tar -C ~/SofeWare/arduino

2、Installing
the Sofeware

sudo apt-get install
ros-indigo-rosserial-arduino

sudo apt-get install ros-indigo-rosserial

或源码安装

mkdir -p catkin_ws/src

cd catkin_ws/src

catkin_init_workspace

cd catkin_ws

catkin_make

cd catkin_ws/src

git clone
https://github.com/ros-drivers/rosserial.git

cd catkin_ws

catkin_make

catkin_make install

source install/setup.bash

3、Install
ros_lib into the Arduino Environment

cd ~/Arduino/libraries/

rm -rf ros_lib

rosrun rosserial_arduino make_libraries.py .

4、安装完成

点开arduino_IDE在文件->示例出现ros_lib说明安装成功

5、example
publisher

/*

 * rosserial Publisher Example

 * Prints "hello world!"

*/

 #include <ros.h>

 #include <std_msgs/String.h>

ros::NodeHandle nh;

std_msgs::String str_msg;

ros::Publisher chatter("chatter",
&str_msg);

char hello[13] = "hello world!";

void setup()

  nh.initNode();

  nh.advertise(chatter);

void loop()

  str_msg.data = hello;

  chatter.publish( &str_msg );

  nh.spinOnce();

  delay(1000);

验证代码上传代码

上传权限

~/SoftWare/arduino/arduino-1.6.9$ ll
/dev/ttyACM0

crw-rw---- 1 root dialout 166, 0 Aug 14 18:15
/dev/ttyACM0

更改用户组

sudo usermod -a -G dialout shuifu

6、演示

roscore

rosrun rosserial_python serial_node.py
/dev/ttyACM0

rostopic echo chatter
7、example subscriber

/*
 * rosserial Subscriber Example
 * Blinks an LED on callback
 */

#include <ros.h>
#include <std_msgs/Empty.h>

ros::NodeHandle nh;

void messageCb( const std_msgs::Empty& toggle_msg){
  digitalWrite(13, HIGH-digitalRead(13));   // blink the led
}

ros::Subscriber<std_msgs::Empty> sub("toggle_led", &messageCb );

void setup()
{
  pinMode(13, OUTPUT);
  nh.initNode();
  nh.subscribe(sub);
}

void loop()
{
  nh.spinOnce();
  delay(1);
}

8、演示

roscore

rosrun rosserial_python serial_node.py /dev/ttyACM0
rostopic pub toggle_led std_msgs/Empty --once

9、Push Button

/* 
 * Button Example for Rosserial
 */

#include <ros.h>
#include <std_msgs/Bool.h>


ros::NodeHandle nh;

std_msgs::Bool pushed_msg;
ros::Publisher pub_button("pushed", &pushed_msg);

const int button_pin = 7;
const int led_pin = 13;

bool last_reading;
long last_debounce_time=0;
long debounce_delay=50;
bool published = true;

void setup()
{
  nh.initNode();
  nh.advertise(pub_button);
  
  //initialize an LED output pin 
  //and a input pin for our push button
  pinMode(led_pin, OUTPUT);
  pinMode(button_pin, INPUT);
  
  //Enable the pullup resistor on the button
  digitalWrite(button_pin, HIGH);
  
  //The button is a normally button
  last_reading = ! digitalRead(button_pin);
 
}

void loop()
{
  
  bool reading = ! digitalRead(button_pin);
  
  if (last_reading!= reading){
      last_debounce_time = millis();
      published = false;
  }
  
  //if the button value has not changed during the debounce delay
  // we know it is stable
  if ( !published && (millis() - last_debounce_time)  > debounce_delay) {
    digitalWrite(led_pin, reading);
    pushed_msg.data = reading;
    pub_button.publish(&pushed_msg);
    published = true;
  }

  last_reading = reading;
  
  nh.spinOnce();
}

10、演示

roscore

rosrun rosserial_python serial_node.py /dev/ttyACM0

rostopic list
/diagnostics
/pusher
/rosout
/rosout_agg

rostopic echo /pusher
data: True
---
data: False
---
data: True
---
data: False

11、Arduino Oscilloscope（示波器）

/*
 * rosserial ADC Example
 *
 * This is a poor man's Oscilloscope.  It does not have the sampling
 * rate or accuracy of a commerical scope, but it is great to get
 * an analog value into ROS in a pinch.
 */

#include <Arduino.h>
#include <ros.h>
#include <rosserial_arduino/Adc.h>

ros::NodeHandle nh;

rosserial_arduino::Adc adc_msg;
ros::Publisher p("adc", &adc_msg);


void setup()
{
  pinMode(13, OUTPUT);
  nh.initNode();

  nh.advertise(p);
}

//We average the analog reading to eliminate some of the noise
int averageAnalog(int pin){
 int v=0;
      for(int i=0; i<4; i++) v+= analogRead(pin);
      return v/4;
}

long adc_timer;

void loop()
{

    adc_msg.adc0 = averageAnalog(0);
    adc_msg.adc1 = averageAnalog(1);
    adc_msg.adc2 = averageAnalog(2);
    adc_msg.adc3 = averageAnalog(3);
    adc_msg.adc4 = averageAnalog(4);
    adc_msg.adc5 = averageAnalog(5);

    p.publish(&adc_msg);

  nh.spinOnce();
}

12、演示

roscore

rqt_plot

rosrun rosserial_python serial_node.py /dev/ttyACM0

rostopic list
/adc
/diagnostics
/rosout
/rosout_agg

rqt_plot adc

13、lightSensor

#include <ros.h>
#include <std_msgs/UInt16.h>

ros::NodeHandle nh;
std_msgs::UInt16 light_msg;
ros::Publisher light("lightSensor", &light_msg);

void setup() {
// put your setup code here, to run once:
Serial.begin(57600); //open serial port, set the baud rate to 57600 bps
nh.initNode();
nh.advertise(light);

}

void loop() {
// put your main code here, to run repeatedly:
int val;
val = analogRead(0); // connect grayscale sensor to Analog 0
Serial.println(val, DEC); // print the value to serial

light_msg.data = val;
light.publish(&light_msg);
nh.spinOnce();
delay(100);

}

14、演示

roscore

rosrun rosserial_python serial_node.py /dev/ttyACM0

rostopic echo /lightSensor

15、keyTouch(按键传感器)

#include <Wire.h>
#include <mpr121.h>
#include <ros.h>
#include <std_msgs/Int32.h>

int key = 0;
ros::NodeHandle nh;

std_msgs::Int32 num_msg;
ros::Publisher pub_num("inputNum", &num_msg);

void setup() {
// put your setup code here, to run once:
nh.initNode();
nh.advertise(pub_num);

Serial.begin(19200);
Wire.begin();
CapaTouch.begin();

delay(500);
Serial.println("START");

}

void loop() {
// put your main code here, to run repeatedly:

key = CapaTouch.keyPad();

if(key == 11)
{
    Serial.print("key:");
    Serial.println("*");
}
else if(key == 12)
{
    Serial.print("key:");
    Serial.println("#");
}
else if(key >= 0)
{
    Serial.print("key:");
    Serial.println(key);
}
delay(200);

num_msg.data = key;
pub_num.publish(&num_msg);
nh.spinOnce();
delay(200);

}