Salve a tutti .
Sto tentando di collegare una sonda di temperatura alla scheda e fare comunicare il valore letto a un PLC tramite modbus TCP.
Se utilizzo Arduino Uno con shield Ethernet la comunicazione funziona utilizzando la libreria MgsModbus ed ethernet
Quando passo il programma per arduino uno wifi REV2 con la libreria WifiNINA mi si connette alla rete wifi ma non comunica sul protocollo Modbus come con la libreria ethernet....
non riesco a capire cosa sbaglio... help
QUESTO LO CKETCH
#include <SPI.h>
#include <WiFiNINA.h>
#include "MgsModbus.h"
float temp;
MgsModbus Mb;
char ssid[] = "xxxxxxxxxxx"; // your network SSID (name)
char pass[] = "xxxxxxxxxxxx"; // your network password
int status = WL_IDLE_STATUS; // the Wifi radio's stat
void setup(){
Serial.begin (9600);
// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while (true);
}
String fv = WiFi.firmwareVersion();
if ( fv != "1.1.0" )
Serial.println("Please upgrade the firmware");
// attempt to connect to Wifi network:
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network:
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}
// you're connected now, so print out the data:
Serial.print("You're connected to the network");
printCurrentNet();
printWifiData();
Serial.print("Connected to wifi. My address:");
IPAddress myAddress = WiFi.localIP();
Serial.println(myAddress);
}
void loop(){
temp = analogRead(0);
Mb.MbData[0] = temp;
Serial.print(" ppm - ");
Serial.println(analogRead(0));
Mb.MbsRun();
delay (2000);
}
void printWifiData() {
// print your WiFi shield's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print your MAC address:
byte mac[6];
WiFi.macAddress(mac);
Serial.print("MAC address: ");
Serial.print(mac[5], HEX);
Serial.print(":");
Serial.print(mac[4], HEX);
Serial.print(":");
Serial.print(mac[3], HEX);
Serial.print(":");
Serial.print(mac[2], HEX);
Serial.print(":");
Serial.print(mac[1], HEX);
Serial.print(":");
Serial.println(mac[0], HEX);
}
void printCurrentNet() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print the MAC address of the router you're attached to:
byte bssid[6];
WiFi.BSSID(bssid);
Serial.print("BSSID: ");
Serial.print(bssid[5], HEX);
Serial.print(":");
Serial.print(bssid[4], HEX);
Serial.print(":");
Serial.print(bssid[3], HEX);
Serial.print(":");
Serial.print(bssid[2], HEX);
Serial.print(":");
Serial.print(bssid[1], HEX);
Serial.print(":");
Serial.println(bssid[0], HEX);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.println(rssi);
// print the encryption type:
byte encryption = WiFi.encryptionType();
Serial.print("Encryption Type:");
Serial.println(encryption, HEX);
Serial.println();
}
MGSMODBUS.H
#include "Arduino.h"
#include <SPI.h>
#include <WiFiNINA.h>
#ifndef MgsModbus_h
#define MgsModbus_h
#define MbDataLen 30 // length of the MdData array
#define MB_PORT 502
enum MB_FC {
MB_FC_NONE = 0,
MB_FC_READ_COILS = 1,
MB_FC_READ_DISCRETE_INPUT = 2,
MB_FC_READ_REGISTERS = 3,
MB_FC_READ_INPUT_REGISTER = 4,
MB_FC_WRITE_COIL = 5,
MB_FC_WRITE_REGISTER = 6,
MB_FC_WRITE_MULTIPLE_COILS = 15,
MB_FC_WRITE_MULTIPLE_REGISTERS = 16
};
class MgsModbus
{
public:
// general
MgsModbus();
word MbData[MbDataLen]; // memory block that holds all the modbus user data
boolean GetBit(word Number);
boolean SetBit(word Number,boolean Data); // returns true when the number is in the MbData range
// modbus master
void Req(MB_FC FC, word Ref, word Count, word Pos);
void MbmRun();
IPAddress remSlaveIP;
// modbus slave
void MbsRun();
word GetDataLen();
private:
// general
MB_FC SetFC(int fc);
// modbus master
uint8_t MbmByteArray[260]; // send and recieve buffer
MB_FC MbmFC;
int MbmCounter;
void MbmProcess();
word MbmPos;
word MbmBitCount;
//modbus slave
uint8_t MbsByteArray[260]; // send and recieve buffer
MB_FC MbsFC;
};
#endif
