EByte e32 How to Send Message use JSON Format?

This topic has 3 replies, 1 voice, and was last updated 4 years, 5 months ago by Renzo Mischianti.

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4 June 2020 at 16:53 #4412
taurushappy
How to Send Message use JSON Format ?
Hello , Can you help me ? How to solve this Question ?
4 June 2020 at 16:55 #4413
Renzo Mischianti
Keymaster
Hi taurushappy,
you can use ArduinoJSON library, (I’m going to publish a post on how to use It).

You can
```
  DynamicJsonDocument doc(512);

  // Set the values in the document
  doc["energyLifetime"] = 21698620;
  doc["energyYearly"] = 1363005;

String buf;
serializeJson(doc, buf);

ResponseStatus rs = e32ttl.sendMessage(buf);
```
Remember you have a size limit on message size of the lora E32.

The code is untested, but I think It can be usefully to understand.

Tell me if It’s ok.

Bye Renzo

4 June 2020 at 16:57 #4414

taurushappy

HI !
first, thanks for your help !
I try this ,the code can work ,but I don’t know it have some problem in my test ,it only work one time,send Message one time ,then stoped!
this is my test code :

 #include "Arduino.h"
#include "LoRa_E32.h"

#include <DHT.h>
#include <ArduinoJson.h>

#define DHTPIN 4
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

DynamicJsonDocument doc(512);

// ---------- 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(&mySerial, D5, D7, D6);
// -------------------------------------

// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(2, 3, 5, 7, 6);
LoRa_E32 e32ttl100(2, 3); // Config without connect AUX and M0 M1

//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(2, 3); // RX, TX
//LoRa_E32 e32ttl(&mySerial, 5, 7, 6);
// -------------------------------------

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

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

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

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

int i = 0;

void loop() {

 float h = dht.readHumidity();
 // Read temperature as Celsius (the default)
 float t = dht.readTemperature();
 // Read temperature as Fahrenheit (isFahrenheit = true)
 float f = dht.readTemperature(true);

 // Check if any reads failed and exit early (to try again).
 if (isnan(h) || isnan(t) || isnan(f)) {
  Serial.println(F("Failed to read from DHT sensor!"));
  return;
 }

 // Compute heat index in Fahrenheit (the default)
 float hif = dht.computeHeatIndex(f, h);
 // Compute heat index in Celsius (isFahreheit = false)
 float hic = dht.computeHeatIndex(t, h, false);

 Serial.print(F("Humidity: "));
 Serial.print(h);
 Serial.print(F("% Temperature: "));
 Serial.print(t);
 Serial.print(F("°C "));
 Serial.print(f);
 Serial.print(F("°F Heat index: "));
 Serial.print(hic);
 Serial.print(F("°C "));
 Serial.print(hif);
 Serial.println(F("°F"));

  
 
 delay(1000);
   

  doc["temperature"]=t;
  doc["humidity"]=h;
  String buf;
  serializeJson(doc,buf);
  ResponseStatus rs = e32ttl100.sendMessage(buf);

  
 Serial.println(rs.getResponseDescription());

 delay(1000);

}

4 June 2020 at 16:58 #4415

Renzo Mischianti

Keymaster

Hi I check your sketch and seems quite ok.

But I think you must add AUX pin or put a pull up resistor on It, with no AUX not work for me, but with aux I have a correct send.

And Arduino Json have some problem on serialize on String

#include "Arduino.h"
#include "LoRa_E32.h"

#include <DHT.h>
#include <ArduinoJson.h>

#define DHTPIN 4
#define DHTTYPE DHT11
int freeRame () {
#ifdef ESP8266
	return Esp.getFreeHeap();
#else
	extern int __heap_start, *__brkval;
	int v;
	return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
#endif // ESP8266
}

DHT dht(DHTPIN, DHTTYPE);

DynamicJsonDocument doc(512);

// ---------- 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(&mySerial, D5, D7, D6);
// -------------------------------------

// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(2, 3, 5, 7, 6);
LoRa_E32 e32ttl100(4, 5, 3); // Config without connect AUX and M0 M1

//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(2, 3); // RX, TX
//LoRa_E32 e32ttl(&mySerial, 5, 7, 6);
// -------------------------------------
void printParameters(struct Configuration configuration) {
	Serial.println("----------------------------------------");

	Serial.print(F("HEAD BIN: "));  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 BIN: "));  Serial.println(configuration.ADDH, BIN);
	Serial.print(F("AddL BIN: "));  Serial.println(configuration.ADDL, BIN);
	Serial.print(F("Chan BIN: "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
	Serial.println(F(" "));
	Serial.print(F("SpeedParityBit BIN    : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
	Serial.print(F("SpeedUARTDataRate BIN : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
	Serial.print(F("SpeedAirDataRate BIN  : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());

	Serial.print(F("OptionTrans BIN       : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
	Serial.print(F("OptionPullup BIN      : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
	Serial.print(F("OptionWakeup BIN      : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
	Serial.print(F("OptionFEC BIN         : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
	Serial.print(F("OptionPower BIN       : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());

	Serial.println("----------------------------------------");

}

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

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

//		ResponseStructContainer c;
//		c = e32ttl100.getConfiguration();
//		struct Configuration configuration = *(Configuration*) c.data;
//		printParameters(configuration);
//
//		configuration.ADDL = 0x01;
//		configuration.ADDH = 0x00;
//		configuration.CHAN = 0x04;
//
//		configuration.OPTION.fixedTransmission = FT_TRANSPARENT_TRANSMISSION;
//		configuration.OPTION.wirelessWakeupTime = WAKE_UP_750;
//
//		    configuration.OPTION.fec = FEC_1_ON;
//		    configuration.OPTION.ioDriveMode = IO_D_MODE_PUSH_PULLS_PULL_UPS;
//		    configuration.OPTION.transmissionPower = POWER_20;
//
//		    configuration.SPED.airDataRate = AIR_DATA_RATE_010_24;
//		    configuration.SPED.uartBaudRate = UART_BPS_9600;
//		    configuration.SPED.uartParity = MODE_00_8N1;
//
//
//		    e32ttl100.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
//			printParameters(configuration);

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

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

int i = 0;

void loop() {
	Serial.println(freeRame());
	float h = dht.readHumidity();
	// Read temperature as Celsius (the default)
	float t = dht.readTemperature();
	// Read temperature as Fahrenheit (isFahrenheit = true)
	float f = dht.readTemperature(true);

	// Check if any reads failed and exit early (to try again).
	if (isnan(h) || isnan(t) || isnan(f)) {
		Serial.println(F("Failed to read from DHT sensor!"));
//		return;
	}

	// Compute heat index in Fahrenheit (the default)
	float hif = dht.computeHeatIndex(f, h);
	// Compute heat index in Celsius (isFahreheit = false)
	float hic = dht.computeHeatIndex(t, h, false);
	Serial.println(freeRame());
	h = random(90);
	t = random(40);
	f = 1.0;
	hif = 2.0;
	hic = 2.0;

	Serial.print(F("Humidity: "));
	Serial.print(h);
	Serial.print(F("% Temperature: "));
	Serial.print(t);
	Serial.print(F("°C "));
	Serial.print(f);
	Serial.print(F("°F Heat index: "));
	Serial.print(hic);
	Serial.print(F("°C "));
	Serial.print(hif);
	Serial.println(F("°F"));
	Serial.println(freeRame());
	delay(1000);

	doc["temperature"] = t;
	doc["humidity"] = h;
	Serial.println(freeRame());

	int size = measureJson(doc)+1;

	char buf[size];
	serializeJson(doc, buf, size);
	Serial.println(buf);
	Serial.println(measureJson(doc));
	ResponseStatus rs = e32ttl100.sendMessage(buf, size);

//	String buf;
//	serializeJson(doc, buf);
//	Serial.println(buf);
//	Serial.println(buf.length());
//	ResponseStatus rs = e32ttl100.sendMessage(buf);

	Serial.println(freeRame());
	Serial.println(rs.getResponseDescription());
	Serial.println(freeRame());

	delay(2000);

}

#include "Arduino.h"
#include "LoRa_E32.h"
#include <ArduinoJson.h>

#define E32_TTL_100
LoRa_E32 e32ttl(4, 5, 3); // Config without connect AUX and M0 M1

//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//E32_TTL e32ttl(&mySerial, D5, D7, D6);

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(400);

	e32ttl.begin();

//			ResponseStructContainer c;
//			c = e32ttl.getConfiguration();
//			struct Configuration configuration = *(Configuration*) c.data;
//			printParameters(configuration);
//
//			configuration.ADDL = 0x01;
//			configuration.ADDH = 0x00;
//			configuration.CHAN = 0x04;
//
//			configuration.OPTION.fixedTransmission = FT_TRANSPARENT_TRANSMISSION;
//			configuration.OPTION.wirelessWakeupTime = WAKE_UP_750;
//
//			configuration.OPTION.fec = FEC_1_ON;
//			configuration.OPTION.ioDriveMode = IO_D_MODE_PUSH_PULLS_PULL_UPS;
//			configuration.OPTION.transmissionPower = POWER_20;
//
//			configuration.SPED.airDataRate = AIR_DATA_RATE_010_24;
//			configuration.SPED.uartBaudRate = UART_BPS_9600;
//			configuration.SPED.uartParity = MODE_00_8N1;
//
//
//			e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
//			printParameters(configuration);

//	ResponseContainer c;
//	c = e32ttl.getConfiguration();
//	Configuration configuration = *(Configuration*) c.data;
//	Serial.println(configuration.SPED.getUARTBaudRate());
//	Serial.println(c.status.getResponseDescription());
//
//	printParameters(configuration);
//
//	ResponseContainer cMi;
//	cMi = e32ttl.getModuleInformation();
//	ModuleInformation mi = *(ModuleInformation*)cMi.data;
//
//	Serial.println(cMi.status.getResponseDescription());
//	Serial.println(cMi.status.code);
//
//	printModuleInformation(mi );
//
//	configuration.CHAN = configuration.CHAN-1;
//	e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
//
//	ResponseContainer cNext;
//	cNext = e32ttl.getConfiguration();
//	Configuration configurationNext = *(Configuration*) cNext.data;
//	Serial.println(configurationNext.SPED.getUARTBaudRate());
//	Serial.println(cNext.status.getResponseDescription());
//	printParameters(configurationNext);

}
DynamicJsonDocument doc(512);

// The loop function is called in an endless loop
void loop()
{
	if (e32ttl.available()  > 1){
//		struct Messaggione {
//			char message[8];
//			bool mitico;
//		};
//
//		char type[5];
//		ResponseContainer rs = e32ttl.receiveInitialMessage(sizeof(type));
//		memcpy ( type, rs.data.c_str(), sizeof(type) );
////		ResponseContainer rs = e32ttl.receiveInitialMessage(5);
////		char type[5] = {rs.data.c_str()};
//
//		Serial.println("READ TYPE: ");
//		Serial.println(rs.status.getResponseDescription());
//		Serial.println(type);
//
//		ResponseStructContainer rsc = e32ttl.receiveMessage(sizeof(Messaggione));
//		struct Messaggione messaggione = *(Messaggione*) rsc.data;

		ResponseContainer rs = e32ttl.receiveMessage();
		String message = rs.data;

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

		Serial.println(message);
		deserializeJson(doc, message);

		Serial.print("humidity --> ");
		Serial.println((float)doc["humidity"]);

//		Serial.println(messaggione.message);
//		Serial.println(messaggione.mitico);

	}
}

//void printParameters(struct Configuration configuration) {
//	Serial.println("----------------------------------------");
//
//	Serial.print(F("HEAD BIN: "));  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 BIN: "));  Serial.println(configuration.ADDH, BIN);
//	Serial.print(F("AddL BIN: "));  Serial.println(configuration.ADDL, BIN);
//	Serial.print(F("Chan BIN: "));  Serial.print(configuration.CHAN, HEX); Serial.print(" -> "); Serial.println();
//	Serial.println(F(" "));
//	Serial.print(F("SpeedParityBit BIN    : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println();
//	Serial.print(F("SpeedUARTDataRate BIN : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println();
//	Serial.print(F("SpeedAirDataRate BIN  : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println();
//
//	Serial.print(F("OptionTrans BIN       : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println();
//	Serial.print(F("OptionPullup BIN      : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println();
//	Serial.print(F("OptionWakeup BIN      : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println();
//	Serial.print(F("OptionFEC BIN         : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println();
//	Serial.print(F("OptionPower BIN       : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println();
//
//	Serial.println("----------------------------------------");
//
//}
void printParameters(struct Configuration configuration) {
	Serial.println("----------------------------------------");

	Serial.print(F("HEAD BIN: "));  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 BIN: "));  Serial.println(configuration.ADDH, BIN);
	Serial.print(F("AddL BIN: "));  Serial.println(configuration.ADDL, BIN);
	Serial.print(F("Chan BIN: "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
	Serial.println(F(" "));
	Serial.print(F("SpeedParityBit BIN    : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
	Serial.print(F("SpeedUARTDataRate BIN : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
	Serial.print(F("SpeedAirDataRate BIN  : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());

	Serial.print(F("OptionTrans BIN       : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
	Serial.print(F("OptionPullup BIN      : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
	Serial.print(F("OptionWakeup BIN      : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
	Serial.print(F("OptionFEC BIN         : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
	Serial.print(F("OptionPower BIN       : "));  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("----------------------------------------");

}