ROS Serial library for Mbed platforms for ROS Indigo Igloo. Check http://wiki.ros.org/rosserial_mbed/ for more information
Dependents: rosserial_mbed_hello_world_publisher rtos_base_control rosserial_mbed_F64MA ROS-RTOS ... more
ROSSerial_mbed for Indigo Distribution
The Robot Operating System (ROS) is a flexible framework for writing robot software. It is a collection of tools, libraries, and conventions that aim to simplify the task of creating complex and robust robot behavior across a wide variety of robotic platforms.
The rosserial_mbed package allows to write ROS nodes on any mbed enabled devices and have them connected to a running ROS system on your computer using the serial port.
Hello World (example publisher)
Import programrosserial_mbed_hello_world_publisher
rosserial_mbed Hello World
Running the Code
Now, launch the roscore in a new terminal window:
Quote:
$ roscore
Next, run the rosserial client application that forwards your MBED messages to the rest of ROS. Make sure to use the correct serial port:
Quote:
$ rosrun rosserial_python serial_node.py /dev/ttyACM0
Finally, watch the greetings come in from your MBED by launching a new terminal window and entering :
Quote:
$ rostopic echo chatter
See Also
More examples
Blink
/* * rosserial Subscriber Example * Blinks an LED on callback */ #include "mbed.h" #include <ros.h> #include <std_msgs/Empty.h> ros::NodeHandle nh; DigitalOut myled(LED1); void messageCb(const std_msgs::Empty& toggle_msg){ myled = !myled; // blink the led } ros::Subscriber<std_msgs::Empty> sub("toggle_led", &messageCb); int main() { nh.initNode(); nh.subscribe(sub); while (1) { nh.spinOnce(); wait_ms(1); } }
Push
/* * Button Example for Rosserial */ #include "mbed.h" #include <ros.h> #include <std_msgs/Bool.h> PinName button = p20; ros::NodeHandle nh; std_msgs::Bool pushed_msg; ros::Publisher pub_button("pushed", &pushed_msg); DigitalIn button_pin(button); DigitalOut led_pin(LED1); bool last_reading; long last_debounce_time=0; long debounce_delay=50; bool published = true; Timer t; int main() { t.start(); nh.initNode(); nh.advertise(pub_button); //Enable the pullup resistor on the button button_pin.mode(PullUp); //The button is a normally button last_reading = ! button_pin; while (1) { bool reading = ! button_pin; if (last_reading!= reading) { last_debounce_time = t.read_ms(); published = false; } //if the button value has not changed for the debounce delay, we know its stable if ( !published && (t.read_ms() - last_debounce_time) > debounce_delay) { led_pin = reading; pushed_msg.data = reading; pub_button.publish(&pushed_msg); published = true; } last_reading = reading; nh.spinOnce(); } }
sensor_msgs/SetCameraInfo.h
- Committer:
- garyservin
- Date:
- 2016-03-31
- Revision:
- 0:fd24f7ca9688
File content as of revision 0:fd24f7ca9688:
#ifndef _ROS_SERVICE_SetCameraInfo_h #define _ROS_SERVICE_SetCameraInfo_h #include <stdint.h> #include <string.h> #include <stdlib.h> #include "ros/msg.h" #include "sensor_msgs/CameraInfo.h" namespace sensor_msgs { static const char SETCAMERAINFO[] = "sensor_msgs/SetCameraInfo"; class SetCameraInfoRequest : public ros::Msg { public: sensor_msgs::CameraInfo camera_info; SetCameraInfoRequest(): camera_info() { } virtual int serialize(unsigned char *outbuffer) const { int offset = 0; offset += this->camera_info.serialize(outbuffer + offset); return offset; } virtual int deserialize(unsigned char *inbuffer) { int offset = 0; offset += this->camera_info.deserialize(inbuffer + offset); return offset; } const char * getType(){ return SETCAMERAINFO; }; const char * getMD5(){ return "ee34be01fdeee563d0d99cd594d5581d"; }; }; class SetCameraInfoResponse : public ros::Msg { public: bool success; const char* status_message; SetCameraInfoResponse(): success(0), status_message("") { } virtual int serialize(unsigned char *outbuffer) const { int offset = 0; union { bool real; uint8_t base; } u_success; u_success.real = this->success; *(outbuffer + offset + 0) = (u_success.base >> (8 * 0)) & 0xFF; offset += sizeof(this->success); uint32_t length_status_message = strlen(this->status_message); memcpy(outbuffer + offset, &length_status_message, sizeof(uint32_t)); offset += 4; memcpy(outbuffer + offset, this->status_message, length_status_message); offset += length_status_message; return offset; } virtual int deserialize(unsigned char *inbuffer) { int offset = 0; union { bool real; uint8_t base; } u_success; u_success.base = 0; u_success.base |= ((uint8_t) (*(inbuffer + offset + 0))) << (8 * 0); this->success = u_success.real; offset += sizeof(this->success); uint32_t length_status_message; memcpy(&length_status_message, (inbuffer + offset), sizeof(uint32_t)); offset += 4; for(unsigned int k= offset; k< offset+length_status_message; ++k){ inbuffer[k-1]=inbuffer[k]; } inbuffer[offset+length_status_message-1]=0; this->status_message = (char *)(inbuffer + offset-1); offset += length_status_message; return offset; } const char * getType(){ return SETCAMERAINFO; }; const char * getMD5(){ return "2ec6f3eff0161f4257b808b12bc830c2"; }; }; class SetCameraInfo { public: typedef SetCameraInfoRequest Request; typedef SetCameraInfoResponse Response; }; } #endif