Taken from here: https://randomnerdtutorials.com/esp-mesh-esp32-esp8266-painlessmesh/
The example uses the "painlessmesh" library. Just add it via arduino's library manager. Other libs will be added, to (like JSON, etc.).
To download the needed "asynctcp" lib go to https://github.com/me-no-dev/AsyncTCP, download the zipped version and add it via boardmanager, too.
Use 2 or more ESP32's (Change the message to see which board has sent the message) and take a look at the logs. Inside the inline C code ALL logs are switched to on (mesh.setDebugMsgTypes ....).
Check the docs of the painlessmesh lib to see how to send single messages to a single node, etc. The code runs on ESP8266's, too but uses different libs (see the first link).
Code:
The example uses the "painlessmesh" library. Just add it via arduino's library manager. Other libs will be added, to (like JSON, etc.).
To download the needed "asynctcp" lib go to https://github.com/me-no-dev/AsyncTCP, download the zipped version and add it via boardmanager, too.
Use 2 or more ESP32's (Change the message to see which board has sent the message) and take a look at the logs. Inside the inline C code ALL logs are switched to on (mesh.setDebugMsgTypes ....).
Check the docs of the painlessmesh lib to see how to send single messages to a single node, etc. The code runs on ESP8266's, too but uses different libs (see the first link).
Code:
B4X:
#Region Project Attributes
#AutoFlushLogs: True
#CheckArrayBounds: True
#StackBufferSize: 600
#End Region
'Ctrl+Click to open the C code folder: ide://run?File=%WINDIR%\System32\explorer.exe&Args=%PROJECT%\Objects\Src
Sub Process_Globals
Dim t As Timer
Public Serial1 As Serial
End Sub
Private Sub AppStart
Serial1.Initialize(115200)
Log("ESP started...")
RunNative("MeshSetup", Null)
t.Initialize("t_tick",500)
t.Enabled=True
End Sub
Sub t_tick
Log("Tick...")
RunNative("MeshUpdate", Null)
End Sub
#if c
/*
Rui Santos
Complete project details at https://RandomNerdTutorials.com/esp-mesh-esp32-esp8266-painlessmesh/
This is a simple example that uses the painlessMesh library: https://github.com/gmag11/painlessMesh/blob/master/examples/basic/basic.ino
*/
#include "painlessMesh.h"
#define MESH_PREFIX "whateverYouLike"
#define MESH_PASSWORD "somethingSneaky"
#define MESH_PORT 5555
Scheduler userScheduler; // to control your personal task
painlessMesh mesh;
// User stub
void sendMessage() ; // Prototype so PlatformIO doesn't complain
Task taskSendMessage( TASK_SECOND * 1 , TASK_FOREVER, &sendMessage );
void sendMessage() {
String msg = "Hi from node1";
msg += mesh.getNodeId();
mesh.sendBroadcast( msg );
taskSendMessage.setInterval( random( TASK_SECOND * 1, TASK_SECOND * 5 ));
}
// Needed for painless library
void receivedCallback( uint32_t from, String &msg ) {
Serial.printf("startHere: Received from %u msg=%s\n", from, msg.c_str());
}
void newConnectionCallback(uint32_t nodeId) {
Serial.printf("--> startHere: New Connection, nodeId = %u\n", nodeId);
}
void changedConnectionCallback() {
Serial.printf("Changed connections\n");
}
void nodeTimeAdjustedCallback(int32_t offset) {
Serial.printf("Adjusted time %u. Offset = %d\n", mesh.getNodeTime(),offset);
}
void MeshSetup(B4R::Object* o) {
//Serial.begin(115200);
mesh.setDebugMsgTypes( ERROR | MESH_STATUS | CONNECTION | SYNC | COMMUNICATION | GENERAL | MSG_TYPES | REMOTE ); // all types on
//mesh.setDebugMsgTypes( ERROR | STARTUP ); // set before init() so that you can see startup messages
mesh.init( MESH_PREFIX, MESH_PASSWORD, &userScheduler, MESH_PORT );
mesh.onReceive(&receivedCallback);
mesh.onNewConnection(&newConnectionCallback);
mesh.onChangedConnections(&changedConnectionCallback);
mesh.onNodeTimeAdjusted(&nodeTimeAdjustedCallback);
userScheduler.addTask( taskSendMessage );
taskSendMessage.enable();
sendMessage();
}
void MeshUpdate(B4R::Object* o) {
// it will run the user scheduler as well
mesh.update();
}
#End If
