LoRa E32 per Arduino, esp32 o esp8266: trasmissione fissa – Parte 4

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Ora capiremo i vari tipi di trasmissione del nostro dispositivo E32 UART LoRa basato sui popolari moduli wireless SX1276 / SX1278.

LoRa E32-TTL-100

Puoi trovare il modulo qui

Nella prima parte ho usato una trasmissione trasparente, quindi inviamo a tutti e riceviamo da tutti coloro che hanno il nostro stesso indirizzo e canale.

LoRa E32 transmitting scenarios

Ma non è uno scenario standard, normalmente vogliamo inviare a un punto specifico e ricevere risposta.

Se hai problemi, ad esempio ti si freeze il dispositivo è preferibile mettere una restistenza di pull-up da 4.7k o meglio collegare il pin AUX al dispositivo.

Normal mode

Per la trasmissione normale è necessario impostare M0 e M1 su LOW ed è meglio se si collega il pin AUX per avere una sincronizzazione migliore, ma non è necessario. È possibile verificare la connessione del pin AUX nella connessione di esempio completa della libreria e aggiungere solo lo specifico numero di pin al costruttore.

LoRa E32-TTL-100 Arduino breadboard
LoRa E32-TTL-100 Wemos D1 breadboard

E devi solamente instanziare il costruttore specifico.

// Arduino constructor
LoRa_E32 e32ttl100(2, 3); // RX, TX
// LoRa_E32 e32ttl100(2, 3, 5); // RX, TX, AUX If you want use AUX pin

// Wemos D1 constructor
LoRa_E32 e32ttl100(D2, D3); // RX, TX
// LoRa_E32 e32ttl100(D2, D3, D5); // RX, TX, AUX If you want use AUX pin

Transparent transmission

Arduino sketch:

/*
 * LoRa E32-TTL-100
 * Write on serial to transfer a message to other device
 * https://www.mischianti.org
 *
 * E32-TTL-100----- Arduino UNO
 * M0         ----- GND
 * M1         ----- GND
 * RX         ----- PIN 2 (PullUP & Voltage divider)
 * TX         ----- PIN 3 (PullUP)
 * AUX        ----- Not connected
 * VCC        ----- 3.3v/5v
 * GND        ----- GND
 *
 */
#include "Arduino.h"
#include "LoRa_E32.h"

LoRa_E32 e32ttl100(2, 3); // RX, TX

void setup() {
  Serial.begin(9600);
  delay(500);

  Serial.println("Hi, I'm going to send message!");

  // Startup all pins and UART
  e32ttl100.begin();

  // Send message
  ResponseStatus rs = e32ttl100.sendMessage("Hello, world?");
  // Check If there is some problem of succesfully send
  Serial.println(rs.getResponseDescription());
}

void loop() {
	// If something available
  if (e32ttl100.available()>1) {
	  // read the String message
	ResponseContainer rc = e32ttl100.receiveMessage();
	// Is something goes wrong print error
	if (rc.status.code!=1){
		rc.status.getResponseDescription();
	}else{
		// Print the data received
		Serial.println(rc.data);
	}
  }
  if (Serial.available()) {
	  String input = Serial.readString();
	  e32ttl100.sendMessage(input);
  }
}

Qui lo sketch Wemos D1 (esp8266):

/*
 * LoRa E32-TTL-100
 * Start device or reset to send a message
 * https://www.mischianti.org
 *
 * E32-TTL-100----- Wemos D1 mini
 * M0         ----- GND
 * M1         ----- GND
 * RX         ----- PIN D2 (PullUP)
 * TX         ----- PIN D3 (PullUP)
 * AUX        ----- Not connected
 * VCC        ----- 3.3v/5v
 * GND        ----- GND
 *
 */
#include "Arduino.h"
#include "LoRa_E32.h"

LoRa_E32 e32ttl100(D2, D3); // RX, TX

void setup() {
  Serial.begin(9600);
  delay(500);

  Serial.println("Hi, I'm going to send message!");

  // Startup all pins and UART
  e32ttl100.begin();

  // Send message
  ResponseStatus rs = e32ttl100.sendMessage("Hello, world?");
  // Check If there is some problem of succesfully send
  Serial.println(rs.getResponseDescription());
}

void loop() {
	// If something available
  if (e32ttl100.available()>1) {
	  // read the String message
	ResponseContainer rc = e32ttl100.receiveMessage();
	// Is something goes wrong print error
	if (rc.status.code!=1){
		rc.status.getResponseDescription();
	}else{
		// Print the data received
		Serial.println(rc.data);
	}
  }
  if (Serial.available()) {
	  String input = Serial.readString();
	  e32ttl100.sendMessage(input);
  }
}

Se hai già modificato la configurazione, devi ripristinare il parametro di base:

//  If you have ever change configuration you must restore It
	ResponseStructContainer c;
	c = e32ttl100.getConfiguration();
	Configuration configuration = *(Configuration*) c.data;
	Serial.println(c.status.getResponseDescription());
	configuration.ADDH = 0;
	configuration.ADDL = 0;
	configuration.CHAN = 0x17;
	configuration.OPTION.fixedTransmission = FT_TRANSPARENT_TRANSMISSION;
	e32ttl100.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);

Fixed transmission

Anche per la trasmissione fissa è necessario impostare M0 e M1 su LOW e per quanto riguarda la trasmissione trasparente È meglio se si collega il pin AUX per una migliore sincronizzazione.

Fixed transmission: punto a punto

Per utilizzare questo tipo di trasmissione è necessario impostare un parametro sulla configurazione e impostare un indirizzo specifico per ogni dispositivo.

LoRa E32 Fixed message to a specified device

Quindi per prima cosa dobbiamo impostare i pin M0 e M1 su ALTO per entrare in modalità programma/sospensione e impostare l’indirizzo corretto e il flag di trasmissione fisso.

Se vogliamo replicare la condizione del mittente nell’immagine superiore, dobbiamo eseguire questa configurazione.

	ResponseStructContainer c;
	c = e32ttl.getConfiguration();
	Configuration configuration = *(Configuration*) c.data;
	configuration.ADDL = 0;
	configuration.ADDH = 1;
	configuration.CHAN = 2;
	configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
	e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);

Rispetto al dispositivo ricevente dobbiamo impostare questa configurazione.

	ResponseStructContainer c;
	c = e32ttl.getConfiguration();
	Configuration configuration = *(Configuration*) c.data;
	configuration.ADDL = 0;
	configuration.ADDH = 3;
	configuration.CHAN = 4;
	configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
	e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);

Ora dobbiamo inviare un messaggio al dispositivo specificato.

        ResponseStatus rs = e32ttl.sendFixedMessage(0, 3, 4, "Message to 00 03 04 device");
	Serial.println(rs.getResponseDescription());

Per il destinatario è più trasparente perché Indirizzo e canale sono gestiti dal dispositivo.

void loop()
{
	if (e32ttl.available()  > 1){
		ResponseContainer rs = e32ttl.receiveMessage();
                // First of all get the data
		String message = rs.data;

		Serial.println(rs.status.getResponseDescription());
		Serial.println(message);
	}
}

Se si desidera aggiungere un altro dispositivo di ricezione per eseguire un test completo, crearne uno con questa configurazione.

	ResponseStructContainer c;
	c = e32ttl.getConfiguration();
	Configuration configuration = *(Configuration*) c.data;
	configuration.ADDL = 0;
	configuration.ADDH = 5;
	configuration.CHAN = 4;
	configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
	e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);

Così puoi verificare che non siano arrivati dati.

Upload sketch (se non si collegano prima tutti i piedini, è necessario attivare la modalità programma e poi ripristinare la modalità normale):

/*
* LoRa E32-TTL-100
* Send fixed transmission message to a specified point.
* https://www.mischianti.org
*
* E32-TTL-100----- Arduino UNO or esp8266
* M0         ----- 3.3v (To config) GND (To send) 7 (To dinamically manage)
* M1         ----- 3.3v (To config) GND (To send) 6 (To dinamically manage)
* RX         ----- PIN 2 (PullUP & Voltage divider)
* TX         ----- PIN 3 (PullUP)
* AUX        ----- Not connected (5 if you connect)
* VCC        ----- 3.3v/5v
* GND        ----- GND
*
*/
#include "Arduino.h"
#include "LoRa_E32.h"
// ---------- esp8266 pins --------------
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6);
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6); // Config without connect AUX and M0 M1
#include <SoftwareSerial.h>
SoftwareSerial mySerial(D2, D3); // RX, TX
LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
// -------------------------------------
// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(2, 3, 5, 7, 6);
//LoRa_E32 e32ttl(2, 3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(2, 3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, 5, 7, 6);
// -------------------------------------
void printParameters(struct Configuration configuration);
void printModuleInformation(struct ModuleInformation moduleInformation);
//The setup function is called once at startup of the sketch
void setup()
{
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB
}
delay(100);
e32ttl.begin();
// After set configuration comment set M0 and M1 to low
// and reboot if you directly set HIGH M0 and M1 to program
ResponseStructContainer c;
c = e32ttl.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
configuration.ADDL = 0x01;
configuration.ADDH = 0x00;
configuration.CHAN = 0x04;
configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
printParameters(configuration);
// ---------------------------
}
// The loop function is called in an endless loop
void loop()
{
delay(2000);
Serial.println("Send message to 00 03 04");
ResponseStatus rs = e32ttl.sendFixedMessage(0, 3, 0x04, "Message to 00 03 04 device");
Serial.println(rs.getResponseDescription());
}
void printParameters(struct Configuration configuration) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, BIN);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, BIN);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());
Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");
}
void printModuleInformation(struct ModuleInformation moduleInformation) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD BIN: "));  Serial.print(moduleInformation.HEAD, BIN);Serial.print(" ");Serial.print(moduleInformation.HEAD, DEC);Serial.print(" ");Serial.println(moduleInformation.HEAD, HEX);
Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
Serial.println("----------------------------------------");
}

Codice del ricevente (se non si collegano prima tutti i piedini, è necessario attivare la modalità programma e poi ripristinare la modalità normale):

/*
* LoRa E32-TTL-100
* Receive fixed transmission message as a specified point.
* https://www.mischianti.org
*
* E32-TTL-100----- Arduino UNO or esp8266
* M0         ----- 3.3v (To config) GND (To send) 7 (To dinamically manage)
* M1         ----- 3.3v (To config) GND (To send) 6 (To dinamically manage)
* RX         ----- PIN 2 (PullUP &amp; Voltage divider)
* TX         ----- PIN 3 (PullUP)
* AUX        ----- Not connected (5 if you connect)
* VCC        ----- 3.3v/5v
* GND        ----- GND
*
*/
#include "Arduino.h"
#include "LoRa_E32.h"
// ---------- esp8266 pins --------------
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6);
//LoRa_E32 e32ttl(D2, D3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
// -------------------------------------
// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(2, 3, 5, 7, 6);
LoRa_E32 e32ttl(2, 3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(2, 3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, 5, 7, 6);
// -------------------------------------
void printParameters(struct Configuration configuration);
void printModuleInformation(struct ModuleInformation moduleInformation);
//The setup function is called once at startup of the sketch
void setup()
{
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB
}
delay(100);
e32ttl.begin();
//	e32ttl.resetModule();
// After set configuration comment set M0 and M1 to low
// and reboot if you directly set HIGH M0 and M1 to program
ResponseStructContainer c;
c = e32ttl.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
configuration.ADDL = 0x03;
configuration.ADDH = 0x00;
configuration.CHAN = 0x04;
configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
printParameters(configuration);
// ---------------------------
Serial.println();
Serial.println("Start listening!");
}
// The loop function is called in an endless loop
void loop()
{
if (e32ttl.available()  > 1){
ResponseContainer rs = e32ttl.receiveMessage();
// First of all get the data
String message = rs.data;
Serial.println(rs.status.getResponseDescription());
Serial.println(message);
}
}
void printParameters(struct Configuration configuration) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, DEC);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, DEC);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());
Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");
}
void printModuleInformation(struct ModuleInformation moduleInformation) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD BIN: "));  Serial.print(moduleInformation.HEAD, BIN);Serial.print(" ");Serial.print(moduleInformation.HEAD, DEC);Serial.print(" ");Serial.println(moduleInformation.HEAD, HEX);
Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
Serial.println("----------------------------------------");
}

Se cambi indirizzo o canale nello sketch del destinatario, non ricevi più messaggi.

Fixed transmisison: broadcast

Con la stessa configurazione di indirizzo e canale possiamo testare la comunicazione broadcast.

Broadcast message to a set of channel devices

Con la mia libreria è possibile utilizzare due tipi di metodo di trasmissione.

ResponseStatus rs = e32ttl.sendBroadcastFixedMessage(4, "Send message to channel 4");
Serial.println(rs.getResponseDescription());

o

ResponseStatus rs = e32ttl.sendBroadcastFixedMessage(BROADCAST_ADDRESS, BROADCAST_ADDRESS, 4, "Send message to channel 4");
Serial.println(rs.getResponseDescription());

Il ricevitore come descritto ha lo stesso codice perché il preambolo con Indirizzo e canale è gestito dal dispositivo.

Ecco lo sketch del mittente (se non si collegano prima tutti i piedini, è necessario attivare la modalità programma e poi ripristinare la modalità normale) :

/*
* LoRa E32-TTL-100
* Send fixed broadcast transmission message to a specified channel.
* https://www.mischianti.org
*
* E32-TTL-100----- Arduino UNO or esp8266
* M0         ----- 3.3v (To config) GND (To send) 7 (To dinamically manage)
* M1         ----- 3.3v (To config) GND (To send) 6 (To dinamically manage)
* RX         ----- PIN 2 (PullUP &amp; Voltage divider)
* TX         ----- PIN 3 (PullUP)
* AUX        ----- Not connected (5 if you connect)
* VCC        ----- 3.3v/5v
* GND        ----- GND
*
*/
#include "Arduino.h"
#include "LoRa_E32.h"
// ---------- esp8266 pins --------------
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6);
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6); // Config without connect AUX and M0 M1
#include <SoftwareSerial.h>
SoftwareSerial mySerial(D2, D3); // RX, TX
LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
// -------------------------------------
// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(2, 3, 5, 7, 6);
//LoRa_E32 e32ttl(2, 3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(2, 3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, 5, 7, 6);
// -------------------------------------
void printParameters(struct Configuration configuration);
void printModuleInformation(struct ModuleInformation moduleInformation);
//The setup function is called once at startup of the sketch
void setup()
{
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB
}
delay(100);
e32ttl.begin();
// After set configuration comment set M0 and M1 to low
// and reboot if you directly set HIGH M0 and M1 to program
ResponseStructContainer c;
c = e32ttl.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
configuration.ADDL = 0x01;
configuration.ADDH = 0x00;
configuration.CHAN = 0x04;
configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
printParameters(configuration);
// ---------------------------
}
// The loop function is called in an endless loop
void loop()
{
delay(2000);
Serial.println("Broadcast message to channel 04");
ResponseStatus rs = e32ttl.sendBroadcastFixedMessage(0x04, "Broadcast message to channel 04");
Serial.println(rs.getResponseDescription());
}
void printParameters(struct Configuration configuration) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, BIN);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, BIN);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());
Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");
}
void printModuleInformation(struct ModuleInformation moduleInformation) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD BIN: "));  Serial.print(moduleInformation.HEAD, BIN);Serial.print(" ");Serial.print(moduleInformation.HEAD, DEC);Serial.print(" ");Serial.println(moduleInformation.HEAD, HEX);
Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
Serial.println("----------------------------------------");
}

Fixed transmission: monitoraggio

Come hai già visto sul primo schema puoi ricevere tutti i messaggi del canale specificato, devi configurare il tuo indirizzo in questo modo.

ResponseStructContainer c;
c = e32ttl.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
configuration.ADDL = BROADCAST_ADDRESS;
configuration.ADDH = BROADCAST_ADDRESS;
configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);

Ed il dispositivo ricevente sarà (se non si collegano prima tutti i piedini, è necessario attivare la modalità programma e poi ripristinare la modalità normale):

/*
* LoRa E32-TTL-100
* Receive fixed transmission message on channel.
* https://www.mischianti.org
*
* E32-TTL-100----- Arduino UNO or esp8266
* M0         ----- 3.3v (To config) GND (To send) 7 (To dinamically manage)
* M1         ----- 3.3v (To config) GND (To send) 6 (To dinamically manage)
* RX         ----- PIN 2 (PullUP &amp; Voltage divider)
* TX         ----- PIN 3 (PullUP)
* AUX        ----- Not connected (5 if you connect)
* VCC        ----- 3.3v/5v
* GND        ----- GND
*
*/
#include "Arduino.h"
#include "LoRa_E32.h"
// ---------- esp8266 pins --------------
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6);
//LoRa_E32 e32ttl(D2, D3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
// -------------------------------------
// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(2, 3, 5, 7, 6);
LoRa_E32 e32ttl(2, 3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(2, 3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, 5, 7, 6);
// -------------------------------------
void printParameters(struct Configuration configuration);
void printModuleInformation(struct ModuleInformation moduleInformation);
//The setup function is called once at startup of the sketch
void setup()
{
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB
}
delay(100);
e32ttl.begin();
//	e32ttl.resetModule();
// After set configuration comment set M0 and M1 to low
// and reboot if you directly set HIGH M0 and M1 to program
ResponseStructContainer c;
c = e32ttl.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
configuration.ADDL = BROADCAST_ADDRESS;
configuration.ADDH = BROADCAST_ADDRESS;
configuration.CHAN = 0x04;
configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
printParameters(configuration);
// ---------------------------
Serial.println();
Serial.println("Start listening!");
}
// The loop function is called in an endless loop
void loop()
{
if (e32ttl.available()  > 1){
ResponseContainer rs = e32ttl.receiveMessage();
// First of all get the data
String message = rs.data;
Serial.println(rs.status.getResponseDescription());
Serial.println(message);
}
}
void printParameters(struct Configuration configuration) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, DEC);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, DEC);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());
Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");
}
void printModuleInformation(struct ModuleInformation moduleInformation) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD BIN: "));  Serial.print(moduleInformation.HEAD, BIN);Serial.print(" ");Serial.print(moduleInformation.HEAD, DEC);Serial.print(" ");Serial.println(moduleInformation.HEAD, HEX);
Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
Serial.println("----------------------------------------");
}

Grazie

  1. LoRa E32 per Arduino, esp32 o esp8266: specifiche ed utilizzo base
  2. LoRa E32 per Arduino, esp32 o esp8266: libreria
  3. LoRa E32 per Arduino, esp32 o esp8266: configurazione
  4. LoRa E32 per Arduino, esp32 o esp8266: trasmissione fissa
  5. LoRa E32 per Arduino, esp32 o esp8266: power saving ed invio di dati strutturati
  6. LoRa E32 per Arduino, esp32 o esp8266: WOR (wake on radio) il microcontrollore e lo shield per Arduino
  7. LoRa E32 per Arduino, esp32 o esp8266: WOR (wake on radio) il microcontrollore e lo shield per il WeMos D1 mini

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