ROS Serial library for Mbed platforms for ROS Melodic Morenia. Check http://wiki.ros.org/rosserial_mbed/ for more information.
Dependents: rosserial_mbed_hello_world_publisher_melodic Motortest Nucleo_vr_servo_project NucleoFM ... more
ROSSerial_mbed for Melodic 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_melodic
rosserial_mbed Hello World example for Melodic Morenia distribution
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(); } }
theora_image_transport/Packet.h@1:da82487f547e, 2019-11-08 (annotated)
- Committer:
- Gary Servin
- Date:
- Fri Nov 08 14:55:04 2019 -0300
- Revision:
- 1:da82487f547e
- Parent:
- 0:04ac6be8229a
Add missing round() method
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Gary Servin |
0:04ac6be8229a | 1 | #ifndef _ROS_theora_image_transport_Packet_h |
Gary Servin |
0:04ac6be8229a | 2 | #define _ROS_theora_image_transport_Packet_h |
Gary Servin |
0:04ac6be8229a | 3 | |
Gary Servin |
0:04ac6be8229a | 4 | #include <stdint.h> |
Gary Servin |
0:04ac6be8229a | 5 | #include <string.h> |
Gary Servin |
0:04ac6be8229a | 6 | #include <stdlib.h> |
Gary Servin |
0:04ac6be8229a | 7 | #include "ros/msg.h" |
Gary Servin |
0:04ac6be8229a | 8 | #include "std_msgs/Header.h" |
Gary Servin |
0:04ac6be8229a | 9 | |
Gary Servin |
0:04ac6be8229a | 10 | namespace theora_image_transport |
Gary Servin |
0:04ac6be8229a | 11 | { |
Gary Servin |
0:04ac6be8229a | 12 | |
Gary Servin |
0:04ac6be8229a | 13 | class Packet : public ros::Msg |
Gary Servin |
0:04ac6be8229a | 14 | { |
Gary Servin |
0:04ac6be8229a | 15 | public: |
Gary Servin |
0:04ac6be8229a | 16 | typedef std_msgs::Header _header_type; |
Gary Servin |
0:04ac6be8229a | 17 | _header_type header; |
Gary Servin |
0:04ac6be8229a | 18 | uint32_t data_length; |
Gary Servin |
0:04ac6be8229a | 19 | typedef uint8_t _data_type; |
Gary Servin |
0:04ac6be8229a | 20 | _data_type st_data; |
Gary Servin |
0:04ac6be8229a | 21 | _data_type * data; |
Gary Servin |
0:04ac6be8229a | 22 | typedef int32_t _b_o_s_type; |
Gary Servin |
0:04ac6be8229a | 23 | _b_o_s_type b_o_s; |
Gary Servin |
0:04ac6be8229a | 24 | typedef int32_t _e_o_s_type; |
Gary Servin |
0:04ac6be8229a | 25 | _e_o_s_type e_o_s; |
Gary Servin |
0:04ac6be8229a | 26 | typedef int64_t _granulepos_type; |
Gary Servin |
0:04ac6be8229a | 27 | _granulepos_type granulepos; |
Gary Servin |
0:04ac6be8229a | 28 | typedef int64_t _packetno_type; |
Gary Servin |
0:04ac6be8229a | 29 | _packetno_type packetno; |
Gary Servin |
0:04ac6be8229a | 30 | |
Gary Servin |
0:04ac6be8229a | 31 | Packet(): |
Gary Servin |
0:04ac6be8229a | 32 | header(), |
Gary Servin |
0:04ac6be8229a | 33 | data_length(0), data(NULL), |
Gary Servin |
0:04ac6be8229a | 34 | b_o_s(0), |
Gary Servin |
0:04ac6be8229a | 35 | e_o_s(0), |
Gary Servin |
0:04ac6be8229a | 36 | granulepos(0), |
Gary Servin |
0:04ac6be8229a | 37 | packetno(0) |
Gary Servin |
0:04ac6be8229a | 38 | { |
Gary Servin |
0:04ac6be8229a | 39 | } |
Gary Servin |
0:04ac6be8229a | 40 | |
Gary Servin |
0:04ac6be8229a | 41 | virtual int serialize(unsigned char *outbuffer) const |
Gary Servin |
0:04ac6be8229a | 42 | { |
Gary Servin |
0:04ac6be8229a | 43 | int offset = 0; |
Gary Servin |
0:04ac6be8229a | 44 | offset += this->header.serialize(outbuffer + offset); |
Gary Servin |
0:04ac6be8229a | 45 | *(outbuffer + offset + 0) = (this->data_length >> (8 * 0)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 46 | *(outbuffer + offset + 1) = (this->data_length >> (8 * 1)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 47 | *(outbuffer + offset + 2) = (this->data_length >> (8 * 2)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 48 | *(outbuffer + offset + 3) = (this->data_length >> (8 * 3)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 49 | offset += sizeof(this->data_length); |
Gary Servin |
0:04ac6be8229a | 50 | for( uint32_t i = 0; i < data_length; i++){ |
Gary Servin |
0:04ac6be8229a | 51 | *(outbuffer + offset + 0) = (this->data[i] >> (8 * 0)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 52 | offset += sizeof(this->data[i]); |
Gary Servin |
0:04ac6be8229a | 53 | } |
Gary Servin |
0:04ac6be8229a | 54 | union { |
Gary Servin |
0:04ac6be8229a | 55 | int32_t real; |
Gary Servin |
0:04ac6be8229a | 56 | uint32_t base; |
Gary Servin |
0:04ac6be8229a | 57 | } u_b_o_s; |
Gary Servin |
0:04ac6be8229a | 58 | u_b_o_s.real = this->b_o_s; |
Gary Servin |
0:04ac6be8229a | 59 | *(outbuffer + offset + 0) = (u_b_o_s.base >> (8 * 0)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 60 | *(outbuffer + offset + 1) = (u_b_o_s.base >> (8 * 1)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 61 | *(outbuffer + offset + 2) = (u_b_o_s.base >> (8 * 2)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 62 | *(outbuffer + offset + 3) = (u_b_o_s.base >> (8 * 3)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 63 | offset += sizeof(this->b_o_s); |
Gary Servin |
0:04ac6be8229a | 64 | union { |
Gary Servin |
0:04ac6be8229a | 65 | int32_t real; |
Gary Servin |
0:04ac6be8229a | 66 | uint32_t base; |
Gary Servin |
0:04ac6be8229a | 67 | } u_e_o_s; |
Gary Servin |
0:04ac6be8229a | 68 | u_e_o_s.real = this->e_o_s; |
Gary Servin |
0:04ac6be8229a | 69 | *(outbuffer + offset + 0) = (u_e_o_s.base >> (8 * 0)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 70 | *(outbuffer + offset + 1) = (u_e_o_s.base >> (8 * 1)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 71 | *(outbuffer + offset + 2) = (u_e_o_s.base >> (8 * 2)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 72 | *(outbuffer + offset + 3) = (u_e_o_s.base >> (8 * 3)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 73 | offset += sizeof(this->e_o_s); |
Gary Servin |
0:04ac6be8229a | 74 | union { |
Gary Servin |
0:04ac6be8229a | 75 | int64_t real; |
Gary Servin |
0:04ac6be8229a | 76 | uint64_t base; |
Gary Servin |
0:04ac6be8229a | 77 | } u_granulepos; |
Gary Servin |
0:04ac6be8229a | 78 | u_granulepos.real = this->granulepos; |
Gary Servin |
0:04ac6be8229a | 79 | *(outbuffer + offset + 0) = (u_granulepos.base >> (8 * 0)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 80 | *(outbuffer + offset + 1) = (u_granulepos.base >> (8 * 1)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 81 | *(outbuffer + offset + 2) = (u_granulepos.base >> (8 * 2)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 82 | *(outbuffer + offset + 3) = (u_granulepos.base >> (8 * 3)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 83 | *(outbuffer + offset + 4) = (u_granulepos.base >> (8 * 4)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 84 | *(outbuffer + offset + 5) = (u_granulepos.base >> (8 * 5)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 85 | *(outbuffer + offset + 6) = (u_granulepos.base >> (8 * 6)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 86 | *(outbuffer + offset + 7) = (u_granulepos.base >> (8 * 7)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 87 | offset += sizeof(this->granulepos); |
Gary Servin |
0:04ac6be8229a | 88 | union { |
Gary Servin |
0:04ac6be8229a | 89 | int64_t real; |
Gary Servin |
0:04ac6be8229a | 90 | uint64_t base; |
Gary Servin |
0:04ac6be8229a | 91 | } u_packetno; |
Gary Servin |
0:04ac6be8229a | 92 | u_packetno.real = this->packetno; |
Gary Servin |
0:04ac6be8229a | 93 | *(outbuffer + offset + 0) = (u_packetno.base >> (8 * 0)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 94 | *(outbuffer + offset + 1) = (u_packetno.base >> (8 * 1)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 95 | *(outbuffer + offset + 2) = (u_packetno.base >> (8 * 2)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 96 | *(outbuffer + offset + 3) = (u_packetno.base >> (8 * 3)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 97 | *(outbuffer + offset + 4) = (u_packetno.base >> (8 * 4)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 98 | *(outbuffer + offset + 5) = (u_packetno.base >> (8 * 5)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 99 | *(outbuffer + offset + 6) = (u_packetno.base >> (8 * 6)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 100 | *(outbuffer + offset + 7) = (u_packetno.base >> (8 * 7)) & 0xFF; |
Gary Servin |
0:04ac6be8229a | 101 | offset += sizeof(this->packetno); |
Gary Servin |
0:04ac6be8229a | 102 | return offset; |
Gary Servin |
0:04ac6be8229a | 103 | } |
Gary Servin |
0:04ac6be8229a | 104 | |
Gary Servin |
0:04ac6be8229a | 105 | virtual int deserialize(unsigned char *inbuffer) |
Gary Servin |
0:04ac6be8229a | 106 | { |
Gary Servin |
0:04ac6be8229a | 107 | int offset = 0; |
Gary Servin |
0:04ac6be8229a | 108 | offset += this->header.deserialize(inbuffer + offset); |
Gary Servin |
0:04ac6be8229a | 109 | uint32_t data_lengthT = ((uint32_t) (*(inbuffer + offset))); |
Gary Servin |
0:04ac6be8229a | 110 | data_lengthT |= ((uint32_t) (*(inbuffer + offset + 1))) << (8 * 1); |
Gary Servin |
0:04ac6be8229a | 111 | data_lengthT |= ((uint32_t) (*(inbuffer + offset + 2))) << (8 * 2); |
Gary Servin |
0:04ac6be8229a | 112 | data_lengthT |= ((uint32_t) (*(inbuffer + offset + 3))) << (8 * 3); |
Gary Servin |
0:04ac6be8229a | 113 | offset += sizeof(this->data_length); |
Gary Servin |
0:04ac6be8229a | 114 | if(data_lengthT > data_length) |
Gary Servin |
0:04ac6be8229a | 115 | this->data = (uint8_t*)realloc(this->data, data_lengthT * sizeof(uint8_t)); |
Gary Servin |
0:04ac6be8229a | 116 | data_length = data_lengthT; |
Gary Servin |
0:04ac6be8229a | 117 | for( uint32_t i = 0; i < data_length; i++){ |
Gary Servin |
0:04ac6be8229a | 118 | this->st_data = ((uint8_t) (*(inbuffer + offset))); |
Gary Servin |
0:04ac6be8229a | 119 | offset += sizeof(this->st_data); |
Gary Servin |
0:04ac6be8229a | 120 | memcpy( &(this->data[i]), &(this->st_data), sizeof(uint8_t)); |
Gary Servin |
0:04ac6be8229a | 121 | } |
Gary Servin |
0:04ac6be8229a | 122 | union { |
Gary Servin |
0:04ac6be8229a | 123 | int32_t real; |
Gary Servin |
0:04ac6be8229a | 124 | uint32_t base; |
Gary Servin |
0:04ac6be8229a | 125 | } u_b_o_s; |
Gary Servin |
0:04ac6be8229a | 126 | u_b_o_s.base = 0; |
Gary Servin |
0:04ac6be8229a | 127 | u_b_o_s.base |= ((uint32_t) (*(inbuffer + offset + 0))) << (8 * 0); |
Gary Servin |
0:04ac6be8229a | 128 | u_b_o_s.base |= ((uint32_t) (*(inbuffer + offset + 1))) << (8 * 1); |
Gary Servin |
0:04ac6be8229a | 129 | u_b_o_s.base |= ((uint32_t) (*(inbuffer + offset + 2))) << (8 * 2); |
Gary Servin |
0:04ac6be8229a | 130 | u_b_o_s.base |= ((uint32_t) (*(inbuffer + offset + 3))) << (8 * 3); |
Gary Servin |
0:04ac6be8229a | 131 | this->b_o_s = u_b_o_s.real; |
Gary Servin |
0:04ac6be8229a | 132 | offset += sizeof(this->b_o_s); |
Gary Servin |
0:04ac6be8229a | 133 | union { |
Gary Servin |
0:04ac6be8229a | 134 | int32_t real; |
Gary Servin |
0:04ac6be8229a | 135 | uint32_t base; |
Gary Servin |
0:04ac6be8229a | 136 | } u_e_o_s; |
Gary Servin |
0:04ac6be8229a | 137 | u_e_o_s.base = 0; |
Gary Servin |
0:04ac6be8229a | 138 | u_e_o_s.base |= ((uint32_t) (*(inbuffer + offset + 0))) << (8 * 0); |
Gary Servin |
0:04ac6be8229a | 139 | u_e_o_s.base |= ((uint32_t) (*(inbuffer + offset + 1))) << (8 * 1); |
Gary Servin |
0:04ac6be8229a | 140 | u_e_o_s.base |= ((uint32_t) (*(inbuffer + offset + 2))) << (8 * 2); |
Gary Servin |
0:04ac6be8229a | 141 | u_e_o_s.base |= ((uint32_t) (*(inbuffer + offset + 3))) << (8 * 3); |
Gary Servin |
0:04ac6be8229a | 142 | this->e_o_s = u_e_o_s.real; |
Gary Servin |
0:04ac6be8229a | 143 | offset += sizeof(this->e_o_s); |
Gary Servin |
0:04ac6be8229a | 144 | union { |
Gary Servin |
0:04ac6be8229a | 145 | int64_t real; |
Gary Servin |
0:04ac6be8229a | 146 | uint64_t base; |
Gary Servin |
0:04ac6be8229a | 147 | } u_granulepos; |
Gary Servin |
0:04ac6be8229a | 148 | u_granulepos.base = 0; |
Gary Servin |
0:04ac6be8229a | 149 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 0))) << (8 * 0); |
Gary Servin |
0:04ac6be8229a | 150 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 1))) << (8 * 1); |
Gary Servin |
0:04ac6be8229a | 151 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 2))) << (8 * 2); |
Gary Servin |
0:04ac6be8229a | 152 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 3))) << (8 * 3); |
Gary Servin |
0:04ac6be8229a | 153 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 4))) << (8 * 4); |
Gary Servin |
0:04ac6be8229a | 154 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 5))) << (8 * 5); |
Gary Servin |
0:04ac6be8229a | 155 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 6))) << (8 * 6); |
Gary Servin |
0:04ac6be8229a | 156 | u_granulepos.base |= ((uint64_t) (*(inbuffer + offset + 7))) << (8 * 7); |
Gary Servin |
0:04ac6be8229a | 157 | this->granulepos = u_granulepos.real; |
Gary Servin |
0:04ac6be8229a | 158 | offset += sizeof(this->granulepos); |
Gary Servin |
0:04ac6be8229a | 159 | union { |
Gary Servin |
0:04ac6be8229a | 160 | int64_t real; |
Gary Servin |
0:04ac6be8229a | 161 | uint64_t base; |
Gary Servin |
0:04ac6be8229a | 162 | } u_packetno; |
Gary Servin |
0:04ac6be8229a | 163 | u_packetno.base = 0; |
Gary Servin |
0:04ac6be8229a | 164 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 0))) << (8 * 0); |
Gary Servin |
0:04ac6be8229a | 165 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 1))) << (8 * 1); |
Gary Servin |
0:04ac6be8229a | 166 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 2))) << (8 * 2); |
Gary Servin |
0:04ac6be8229a | 167 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 3))) << (8 * 3); |
Gary Servin |
0:04ac6be8229a | 168 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 4))) << (8 * 4); |
Gary Servin |
0:04ac6be8229a | 169 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 5))) << (8 * 5); |
Gary Servin |
0:04ac6be8229a | 170 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 6))) << (8 * 6); |
Gary Servin |
0:04ac6be8229a | 171 | u_packetno.base |= ((uint64_t) (*(inbuffer + offset + 7))) << (8 * 7); |
Gary Servin |
0:04ac6be8229a | 172 | this->packetno = u_packetno.real; |
Gary Servin |
0:04ac6be8229a | 173 | offset += sizeof(this->packetno); |
Gary Servin |
0:04ac6be8229a | 174 | return offset; |
Gary Servin |
0:04ac6be8229a | 175 | } |
Gary Servin |
0:04ac6be8229a | 176 | |
Gary Servin |
0:04ac6be8229a | 177 | const char * getType(){ return "theora_image_transport/Packet"; }; |
Gary Servin |
0:04ac6be8229a | 178 | const char * getMD5(){ return "33ac4e14a7cff32e7e0d65f18bb410f3"; }; |
Gary Servin |
0:04ac6be8229a | 179 | |
Gary Servin |
0:04ac6be8229a | 180 | }; |
Gary Servin |
0:04ac6be8229a | 181 | |
Gary Servin |
0:04ac6be8229a | 182 | } |
Gary Servin |
0:04ac6be8229a | 183 | #endif |