ESP32与ROS调试笔记(Linux和Windows)
ESP32支持ROS1和ROS2,很方便使用,有两种主流方式:
- arduino IDE (1.8.13)
- esp idf(4.2)
网上和Github上有很多方式,用了一下都感觉不适合我!
其实很简单,和esp8266类似,只用arduino自带的ros包即可,注意版本号0.7.8。
参考如下:ESP8266和ESP32配置(需使用ROS1和ROS2)
这里,主要看源码需要修改的地方,头文件!
esp8266使用/home/ros/.arduino15/packages/esp8266/hardware/esp8266/2.7.4/libraries/ESP8266WiFi/src
- ESP8266WiFi.h
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#ifndef WiFi_h
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#define WiFi_h
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#include <stdint.h>
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extern "C" {
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#include "include/wl_definitions.h"
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}
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#include "IPAddress.h"
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#include "ESP8266WiFiType.h"
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#include "ESP8266WiFiSTA.h"
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#include "ESP8266WiFiAP.h"
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#include "ESP8266WiFiScan.h"
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#include "ESP8266WiFiGeneric.h"
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#include "WiFiClient.h"
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#include "WiFiServer.h"
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#include "WiFiServerSecure.h"
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#include "WiFiClientSecure.h"
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#include "BearSSLHelpers.h"
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#include "CertStoreBearSSL.h"
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#ifdef DEBUG_ESP_WIFI
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#ifdef DEBUG_ESP_PORT
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#define DEBUG_WIFI(fmt, ...) DEBUG_ESP_PORT.printf_P( (PGM_P)PSTR(fmt), ##__VA_ARGS__ )
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#endif
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#endif
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#ifndef DEBUG_WIFI
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#define DEBUG_WIFI(...) do { (void)0; } while (0)
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#endif
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class ESP8266WiFiClass : public ESP8266WiFiGenericClass, public ESP8266WiFiSTAClass, public ESP8266WiFiScanClass, public ESP8266WiFiAPClass {
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public:
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// workaround same function name with different signature
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using ESP8266WiFiGenericClass::channel;
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using ESP8266WiFiSTAClass::SSID;
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using ESP8266WiFiSTAClass::RSSI;
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using ESP8266WiFiSTAClass::BSSID;
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using ESP8266WiFiSTAClass::BSSIDstr;
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using ESP8266WiFiScanClass::SSID;
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using ESP8266WiFiScanClass::encryptionType;
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using ESP8266WiFiScanClass::RSSI;
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using ESP8266WiFiScanClass::BSSID;
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using ESP8266WiFiScanClass::BSSIDstr;
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using ESP8266WiFiScanClass::channel;
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using ESP8266WiFiScanClass::isHidden;
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// ----------------------------------------------------------------------------------------------
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// ------------------------------------------- Debug --------------------------------------------
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// ----------------------------------------------------------------------------------------------
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public:
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void printDiag(Print& dest);
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friend class WiFiClient;
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friend class WiFiServer;
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};
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extern ESP8266WiFiClass WiFi;
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#endif
esp32使用/home/ros/.arduino15/packages/esp32/hardware/esp32/1.0.4/libraries/WiFi/src
- WiFi.h
这个会和系统目录中wifi.h重合,请务必保证编译时头文件路径正确!
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#ifndef WiFi_h
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#define WiFi_h
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#include <stdint.h>
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#include "Print.h"
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#include "IPAddress.h"
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#include "IPv6Address.h"
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#include "WiFiType.h"
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#include "WiFiSTA.h"
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#include "WiFiAP.h"
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#include "WiFiScan.h"
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#include "WiFiGeneric.h"
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#include "WiFiClient.h"
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#include "WiFiServer.h"
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#include "WiFiUdp.h"
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class WiFiClass : public WiFiGenericClass, public WiFiSTAClass, public WiFiScanClass, public WiFiAPClass
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{
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public:
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using WiFiGenericClass::channel;
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using WiFiSTAClass::SSID;
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using WiFiSTAClass::RSSI;
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using WiFiSTAClass::BSSID;
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using WiFiSTAClass::BSSIDstr;
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using WiFiScanClass::SSID;
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using WiFiScanClass::encryptionType;
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using WiFiScanClass::RSSI;
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using WiFiScanClass::BSSID;
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using WiFiScanClass::BSSIDstr;
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using WiFiScanClass::channel;
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public:
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void printDiag(Print& dest);
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friend class WiFiClient;
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friend class WiFiServer;
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friend class WiFiUDP;
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};
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extern WiFiClass WiFi;
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#endif
一切正常愉快玩耍:
编译如有问题请自行查错修订,测试过代码如下,wifi名和密码为***,请用实际替换,UART使用如教程一致:
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#include "WiFi.h"
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#include <ros.h>
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#include <std_msgs/String.h>
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#include <std_msgs/Int16.h>
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#include <std_msgs/Float64.h>
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#include <rosserial_arduino/Adc.h>
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//
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// WiFi Definitions //
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//
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const char* ssid = "********";
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const char* password = "*********";
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IPAddress server(172, 20, 10, 3); // ip of your ROS server
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IPAddress ip_address;
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int status = WL_IDLE_STATUS;
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WiFiClient client;
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class WiFiHardware {
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public:
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WiFiHardware() {};
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void init() {
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// do your initialization here. this probably includes TCP server/client setup
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client.connect(server, 11411);
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}
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// read a byte from the serial port. -1 = failure
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int read() {
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// implement this method so that it reads a byte from the TCP connection and returns it
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// you may return -1 is there is an error; for example if the TCP connection is not open
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return client.read(); //will return -1 when it will works
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}
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// write data to the connection to ROS
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void write(uint8_t* data, int length) {
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// implement this so that it takes the arguments and writes or prints them to the TCP connection
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for(int i=0; i<length; i++)
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client.write(data[i]);
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}
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// returns milliseconds since start of program
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unsigned long time() {
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return millis(); // easy; did this one for you
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}
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};
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int i;
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void chatterCallback(const std_msgs::String& msg) {
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i = atoi(msg.data);
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}
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std_msgs::String str_msg;
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rosserial_arduino::Adc adc_msg;
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ros::Publisher chatter("chatter", &str_msg);
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ros::Publisher p("adc", &adc_msg);
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ros::Subscriber<std_msgs::String> sub("message", &chatterCallback);
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ros::NodeHandle_<WiFiHardware> nh;
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char hello[20] = "ESP32 wifi alive!";
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void setupWiFi()
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{
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WiFi.begin(ssid, password);
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Serial.print("\nConnecting to "); Serial.println(ssid);
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uint8_t i = 0;
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while (WiFi.status() != WL_CONNECTED && i++ < 20) delay(500);
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if(i == 21){
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Serial.print("Could not connect to"); Serial.println(ssid);
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while(1) delay(500);
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}
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Serial.print("Ready! Use ");
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Serial.print(WiFi.localIP());
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Serial.println(" to access client");
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}
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int averageAnalog(int pin){
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int v=0;
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for(int i=0; i<4; i++) v+= analogRead(pin);
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return v/4;
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}
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void setup() {
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Serial.begin(115200);
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setupWiFi();
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delay(2000);
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nh.initNode();
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nh.advertise(chatter);
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nh.subscribe(sub);
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nh.advertise(p);
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}
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void loop() {
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str_msg.data = hello;
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chatter.publish( &str_msg );
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adc_msg.adc0 = averageAnalog(0);
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p.publish(&adc_msg);
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nh.spinOnce();
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delay(500);
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}
主机端配置对应IP。
rosrun rosserial_python serial_node.py tcp
连接成功!!!
查看一下主题?
很愉快,一次成功,没有遇到什么奇怪的问题。和8266几乎一致,但是esp32性能强于8266。
windows环境下测试:
先看IP是否匹配,注意UART看串口号,wifi看IP,一定要正确才可以!
接着,直接用可以使用了。
然后启动,tcp节点:
rosrun rosserial_server socket_node tcp
查看一下:
注意,如果配置不正确,无法看到/adc,/chatter,/message等主题哦。
支持ros版本(melodic,neotic),系统版本(linux,windows),已全部测试均可以。
C:\ros_ws>set ROS_IP=172.20.10.3 C:\ros_ws>set ROS_MASTER_URI=http://172.20.10.3:11311 C:\ros_ws>roscore ... logging to C:\Users\zhangrelay\.ros\log\56128ade-1a25-11eb-9f50-94b86dd78b23\roslaunch-LAPTOP-5REQ7K1L-10872.log Checking log directory for disk usage. This may take a while. Press Ctrl-C to interrupt Done checking log file disk usage. Usage is <1GB. started roslaunch server http://172.20.10.3:60658/ ros_comm version 1.14.9 SUMMARY ======== PARAMETERS * /rosdistro: melodic * /rosversion: 1.14.9 NODES auto-starting new master process[master]: started with pid [12060] ROS_MASTER_URI=http://172.20.10.3:11311/ setting /run_id to 56128ade-1a25-11eb-9f50-94b86dd78b23 process[rosout-1]: started with pid [13192] started core service [/rosout]
-fin-
文章来源: zhangrelay.blog.csdn.net,作者:zhangrelay,版权归原作者所有,如需转载,请联系作者。
原文链接:zhangrelay.blog.csdn.net/article/details/109380412
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