Hello There, I am developing a project that needs to use two modules Lora E32 to transmite and receive data. To learn how to use this module I am using library EBYTE from Kris Kasprzak, and using the example to send and receive using ESP32. I've been trying to use this example with the module a lot of time, and try to search for others examples of code and tested it but It still doesn't work at all, the module doesn't seem to be damaged, and I always connected the antenna before any test and have supplied it with 3V3.
Transmitter
*
This example shows how to connect to an EBYTE transceiver
using an ESP32
This example shows how to connect to an EBYTE transceiver
using an ESP32
This code for for the sender
ESP32 won't allow SoftwareSerial (at least I can't get that lib to work
so you will just hardwire your EBYTE directly to the Serial2 port
*/
#include "EBYTE.h"
/*
WARNING: IF USING AN ESP32
DO NOT USE THE PIN NUMBERS PRINTED ON THE BOARD
YOU MUST USE THE ACTUAL GPIO NUMBER
*/
#define PIN_RX 16 // Serial2 RX (connect this to the EBYTE Tx pin)
#define PIN_TX 17 // Serial2 TX pin (connect this to the EBYTE Rx pin)
#define PIN_M0 4 // D4 on the board (possibly pin 24)
#define PIN_M1 22 // D2 on the board (possibly called pin 22)
#define PIN_AX 21 // D15 on the board (possibly called pin 21)
// i recommend putting this code in a .h file and including it
// from both the receiver and sender modules
struct DATA {
unsigned long Count;
int Bits;
float Volts;
float Amps;
};
// these are just dummy variables, replace with your own
int Chan;
DATA MyData;
unsigned long Last;
// create the transceiver object, passing in the serial and pins
EBYTE Transceiver(&Serial2, PIN_M0, PIN_M1, PIN_AX);
void setup() {
Serial.begin(9600);
Serial2.begin(9600);
Serial.println("Starting Reader");
// this init will set the pinModes for you
Serial.println(Transceiver.init());
// all these calls are optional but shown to give examples of what you can do
// Serial.println(Transceiver.GetAirDataRate());
// Serial.println(Transceiver.GetChannel());
// Transceiver.SetAddressH(1);
// Transceiver.SetAddressL(1);
// Chan = 15;
// Transceiver.SetChannel(Chan);
// save the parameters to the unit,
// Transceiver.SaveParameters(PERMANENT);
// you can print all parameters and is good for debugging
// if your units will not communicate, print the parameters
// for both sender and receiver and make sure air rates, channel
// and address is the same
Transceiver.PrintParameters();
}
void loop() {
// measure some data and save to the structure
MyData.Count++;
MyData.Bits = analogRead(A0);
MyData.Volts = MyData.Bits * ( 5.0 / 1024.0 );
// i highly suggest you send data using structures and not
// a parsed data--i've always had a hard time getting reliable data using
// a parsing method
Transceiver.SendStruct(&MyData, sizeof(MyData));
// note, you only really need this library to program these EBYTE units
// you can call write directly on the EBYTE Serial object
// Serial2.write((uint8_t*) &Data, PacketSize );
// let the use know something was sent
Serial.print("Sending: "); Serial.println(MyData.Count);
delay(1000);
}
Receiver
/*
This example shows how to connect to an EBYTE transceiver
using an ESP32
This example shows how to connect to an EBYTE transceiver
using an ESP32
This code for for the sender
ESP32 won't allow SoftwareSerial (at least I can't get that lib to work
so you will just hardwire your EBYTE directly to the Serial2 port
*/
#include "EBYTE.h"
/*
WARNING: IF USING AN ESP32
DO NOT USE THE PIN NUMBERS PRINTED ON THE BOARD
YOU MUST USE THE ACTUAL GPIO NUMBER
*/
#define PIN_RX 16 // Serial2 RX (connect this to the EBYTE Tx pin)
#define PIN_TX 17 // Serial2 TX pin (connect this to the EBYTE Rx pin)
#define PIN_M0 4 // D4 on the board (possibly pin 24)
#define PIN_M1 22 // D2 on the board (possibly called pin 22)
#define PIN_AX 21 // D15 on the board (possibly called pin 21)
// i recommend putting this code in a .h file and including it
// from both the receiver and sender modules
struct DATA {
unsigned long Count;
int Bits;
float Volts;
float Amps;
};
// these are just dummy variables, replace with your own
int Chan;
DATA MyData;
unsigned long Last;
// create the transceiver object, passing in the serial and pins
EBYTE Transceiver(&Serial2, PIN_M0, PIN_M1, PIN_AX);
void setup() {
Serial.begin(9600);
Serial2.begin(9600);
Serial.println("Starting Reader");
// this init will set the pinModes for you
Transceiver.init();
Transceiver.SetAirDataRate(ADR_1K); // Estabelece a taxa de dados de transmissão
Transceiver.SetAddress(1); // Estabelece endereço da rede
Transceiver.SetChannel(23); // Estabelece canal como 23
Transceiver.SaveParameters(TEMPORARY); // Salva todas as definições de forma temporária // Imprime todos os parâmetros (configurações) obtidos do módulo
Transceiver.SetMode(FP_NORMAL); // Define modo de operação como normal
// all these calls are optional but shown to give examples of what you can do
// Serial.println(Transceiver.GetAirDataRate());
// Serial.println(Transceiver.GetChannel());
// Transceiver.SetAddressH(1);
// Transceiver.SetAddressL(1);
// Chan = 15;
// Transceiver.SetChannel(Chan);
// save the parameters to the unit,
// Transceiver.SetPullupMode(1);
// Transceiver.SaveParameters(PERMANENT);
// you can print all parameters and is good for debugging
// if your units will not communicate, print the parameters
// for both sender and receiver and make sure air rates, channel
// and address is the same
Transceiver.PrintParameters();
}
void loop() {
// if the transceiver serial is available, proces incoming data
// you can also use Transceiver.available()
if (Serial2.available()) {
// i highly suggest you send data using structures and not
// a parsed data--i've always had a hard time getting reliable data using
// a parsing method
Transceiver.GetStruct(&MyData, sizeof(MyData));
// note, you only really need this library to program these EBYTE units
// you can call readBytes directly on the EBYTE Serial object
// Serial2.readBytes((uint8_t*)& MyData, (uint8_t) sizeof(MyData));
// dump out what was just received
Serial.print("Count: "); Serial.println(MyData.Count);
Serial.print("Bits: "); Serial.println(MyData.Bits);
Serial.print("Volts: "); Serial.println(MyData.Volts);
// if you got data, update the checker
Last = millis();
}
else {
// if the time checker is over some prescribed amount
// let the user know there is no incoming data
if ((millis() - Last) > 1000) {
Serial.println("Searching: ");
Last = millis();
}
}
}
Schematic to both Transmitter and Receiver
