/*
* EBYTE LoRa E220
* send a structured message to the device that have ADDH ADDL CHAN -> 0 DESTINATION_ADDL 23
*
* The receiver read the first part of the packet and undestand the type.
* If the type is HUMI read the message and the humidity as int
* else read the temperature as float.
* I use byte array because some microcontroller can have different size for float
*
* You must configure 2 device: one as SENDER (with FIXED SENDER config) and uncomment the relative
* define with the correct DESTINATION_ADDL, and one as RECEIVER (with FIXED RECEIVER config)
* and uncomment the relative define with the correct DESTINATION_ADDL.
*
* Write a string on serial monitor or reset to resend default value.
*
* You must uncommend the correct constructor and set the correct AUX_PIN define.
*
* 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 MESSAGE_TYPE "HUMI"
// With FIXED SENDER configuration
//#define DESTINATION_ADDL 3
//#define ROOM "Kitchen"
// With FIXED RECEIVER configuration
#define DESTINATION_ADDL 2
#define ROOM "Bathroo"
// If you want use RSSI uncomment //#define ENABLE_RSSI true
// and use relative configuration with RSSI enabled
// #define ENABLE_RSSI true
#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
//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
// -------------------------------------------------
struct MessageTemperature {
char type[5];
char message[8];
byte temperature[4];
};
struct MessageHumidity {
char type[5];
char message[8];
byte humidity;
};
void setup() {
Serial.begin(9600);
delay(500);
// Startup all pins and UART
e220ttl.begin();
Serial.println("Hi, I'm going to send message!");
struct MessageHumidity message = { "HUMI", ROOM, 80 };
// Send message
ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, &message, sizeof(MessageHumidity));
// Check If there is some problem of succesfully send
Serial.println(rs.getResponseDescription());
struct MessageTemperature messageT = { "TEMP", ROOM, 0 };
*(float*)(messageT.temperature) = 19.2;
// Send message
ResponseStatus rsT = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, &messageT, sizeof(MessageTemperature));
// Check If there is some problem of succesfully send
Serial.println(rsT.getResponseDescription());
}
void loop() {
// If something available
if (e220ttl.available() > 1) {
// read the String message
char type[5]; // first part of structure
ResponseContainer rs = e220ttl.receiveInitialMessage(sizeof(type));
String typeStr = rs.data;
// Is something goes wrong print error
if (rs.status.code != 1) {
Serial.println(rs.status.getResponseDescription());
} else {
Serial.println(typeStr);
if (typeStr == "TEMP") {
struct MessageTemperaturePartial {
char message[8];
byte temperature[4];
};
ResponseStructContainer rsc = e220ttl.receiveMessage( sizeof(MessageTemperaturePartial));
struct MessageTemperaturePartial message = *(MessageTemperaturePartial*) rsc.data;
Serial.println(*(float*)(message.temperature));
Serial.println(message.message);
rsc.close();
} else if (typeStr == "HUMI") {
struct MessageHumidityPartial {
char message[8];
byte humidity;
};
ResponseStructContainer rsc = e220ttl.receiveMessage(sizeof(MessageHumidityPartial));
struct MessageHumidityPartial message = *(MessageHumidityPartial*) rsc.data;
Serial.println(message.humidity);
Serial.println(message.message);
rsc.close();
} else {
Serial.println("Something goes wrong!!");
}
}
}
if (Serial.available()) {
if (MESSAGE_TYPE == "HUMI") {
struct MessageHumidity message = { "HUMI", ROOM, 0 };
message.humidity = Serial.parseInt();
// Send message
ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, &message, sizeof(MessageHumidity));
// Check If there is some problem of succesfully send
Serial.println(rs.getResponseDescription());
} else {
struct MessageTemperature message = { "TEMP", ROOM, 0 };
*(float*)(message.temperature) = Serial.parseFloat();
// Send message
ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 23, &message, sizeof(MessageTemperature));
// Check If there is some problem of succesfully send
Serial.println(rs.getResponseDescription());
}
}
}