I am trying to make a transparent transmission with esp32 and Lora E220T400D module but I am getting an error. I am sharing with you the code I used and my connection diagram.
// ESP32_02_sendTransparentTransmission
/*
* EBYTE LoRa E220
* send a transparent message, you must check that the transmitter and receiver have the same
* CHANNEL ADDL and ADDH
*
* Pay attention e220 support RSSI, if you want use that functionality you must enable RSSI on configuration
* configuration.TRANSMISSION_MODE.enableRSSI = RSSI_ENABLED;
*
* and uncomment #define ENABLE_RSSI true in this sketch
*
* You must uncommend the correct constructor.
*
* by Renzo Mischianti <https://www.mischianti.org>
*
* https://www.mischianti.org
*
* E220 ----- WeMos D1 mini ----- esp32 ----- Arduino Nano 33 IoT ----- Arduino MKR ----- Raspberry Pi Pico ----- stm32 ----- ArduinoUNO
* M0 ----- D7 (or GND) ----- 19 (or GND) ----- 4 (or GND) ----- 2 (or GND) ----- 10 (or GND) ----- PB0 (or GND) ----- 7 Volt div (or GND)
* M1 ----- D6 (or GND) ----- 21 (or GND) ----- 6 (or GND) ----- 4 (or GND) ----- 11 (or GND) ----- PB10 (or GND) ----- 6 Volt div (or GND)
* TX ----- D3 (PullUP) ----- TX2 (PullUP) ----- TX1 (PullUP) ----- 14 (PullUP) ----- 8 (PullUP) ----- PA2 TX2 (PullUP) ----- 4 (PullUP)
* RX ----- D4 (PullUP) ----- RX2 (PullUP) ----- RX1 (PullUP) ----- 13 (PullUP) ----- 9 (PullUP) ----- PA3 RX2 (PullUP) ----- 5 Volt div (PullUP)
* AUX ----- D5 (PullUP) ----- 18 (PullUP) ----- 2 (PullUP) ----- 0 (PullUP) ----- 2 (PullUP) ----- PA0 (PullUP) ----- 3 (PullUP)
* VCC ----- 3.3v/5v ----- 3.3v/5v ----- 3.3v/5v ----- 3.3v/5v ----- 3.3v/5v ----- 3.3v/5v ----- 3.3v/5v
* GND ----- GND ----- GND ----- GND ----- GND ----- GND ----- GND ----- GND
*
*/
#define ENABLE_RSSI true
#define FREQUENCY_868
#include "Arduino.h"
#include "LoRa_E220.h"
// ---------- esp8266 pins --------------
//LoRa_E220 e220ttl(RX, TX, AUX, M0, M1); // Arduino RX <-- e220 TX, Arduino TX --> e220 RX
//LoRa_E220 e220ttl(D3, D4, D5, D7, D6); // Arduino RX <-- e220 TX, Arduino TX --> e220 RX AUX M0 M1
//LoRa_E220 e220ttl(D2, D3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // Arduino RX <-- e220 TX, Arduino TX --> e220 RX
//LoRa_E220 e220ttl(&mySerial, D5, D7, D6); // AUX M0 M1
// -------------------------------------
// ---------- Arduino pins --------------
//LoRa_E220 e220ttl(4, 5, 3, 7, 6); // Arduino RX <-- e220 TX, Arduino TX --> e220 RX AUX M0 M1
//LoRa_E220 e220ttl(4, 5); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(4, 5); // Arduino RX <-- e220 TX, Arduino TX --> e220 RX
//LoRa_E220 e220ttl(&mySerial, 3, 7, 6); // AUX M0 M1
// -------------------------------------
// ------------- Arduino Nano 33 IoT -------------
// LoRa_E220 e220ttl(&Serial1, 2, 4, 6); // RX AUX M0 M1
// -------------------------------------------------
// ------------- Arduino MKR WiFi 1010 -------------
// LoRa_E220 e220ttl(&Serial1, 0, 2, 4); // RX AUX M0 M1
// -------------------------------------------------
// ---------- esp32 pins --------------
// LoRa_E220 e220ttl(&Serial2, 15, 21, 19); // RX AUX M0 M1
// ESP32
#define RXD1 16
#define TXD1 17
// ---------- esp32 pins --------------
LoRa_E220 e220ttl(&Serial2, 18, 21, 19); // RX AUX M0 M1
//LoRa_E220 e220ttl(&Serial2, 22, 4, 18, 21, 19, UART_BPS_RATE_9600); // esp32 RX <-- e220 TX, esp32 TX --> e220 RX AUX M0 M1
// -------------------------------------
// ---------- Raspberry PI Pico pins --------------
// LoRa_E220 e220ttl(&Serial2, 2, 10, 11); // RX AUX M0 M1
// -------------------------------------
// ---------------- STM32 --------------------
//HardwareSerial Serial2(USART2); // PA3 (RX) PA2 (TX)
//LoRa_E220 e220ttl(&Serial2, PA0, PB0, PB10); // RX AUX M0 M1
// -------------------------------------------------
// test structure
struct _attribute_((packed)) Struct1 {
int16_t seq; // sequence number
float temperature;
float humidity;
float pressure;
};
Struct1 struct1 = { 0, 25.6f, 50.9f, 100.0f }; // test values
void setup() {
Serial.begin(115200);
Serial2.begin(9600, SERIAL_8N1, RXD1, TXD1); // for LoRa E220 delay(500);
// Startup all pins and UART
e220ttl.begin();
sendData();
}
void sendData(void) {
// update data ready for next transmissiom - replace with code to read sensor
struct1.temperature += 1.0f;
struct1.humidity += 10.0f;
struct1.pressure += 100.0f;
Serial.print("\nESP32 > transmit > ");
ResponseStatus rs = e220ttl.sendMessage(&struct1, sizeof(struct1));
// Check If there is some problem of succesfully send
Serial.print(rs.getResponseDescription()); // transmit structure and print vales transmitted
Serial.print(" temperature ");
Serial.print(struct1.temperature);
Serial.print(" humidity ");
Serial.print(struct1.humidity);
Serial.print(" pressure ");
Serial.println(struct1.pressure);
struct1.seq++;
}
void loop() {
static long timer = millis();
static int seqExpected = 0;
// If something available
if (e220ttl.available() > 1) {
// read the structure message
ResponseStructContainer rc = e220ttl.receiveMessageRSSI(sizeof(Struct1));
// Is something goes wrong print error
if (rc.status.code != 1) {
Serial.println(rc.status.getResponseDescription());
} else {
// Print the data received
Serial.print("ResponseDescription ");
Serial.print(rc.status.getResponseDescription());
Serial.print(" seq ");
Serial.print(((Struct1*)rc.data)->seq);
Serial.print(" temperature ");
Serial.print(((Struct1*)rc.data)->temperature);
Serial.print(" humidity ");
Serial.print(((Struct1*)rc.data)->humidity);
Serial.print(" pressure ");
Serial.print(((Struct1*)rc.data)->pressure);
Serial.print(" RSSI: ");
Serial.println(rc.rssi, DEC);
// check for sequence error
if (struct1.seq != seqExpected) {
Serial.print("*** Sequence number error ! expected ");
Serial.println(seqExpected);
}
seqExpected = struct1.seq + 1; // set up next sequence number
}
}
if (millis() - timer > 5000) {
timer = millis();
sendData();
}
}
