kriskasprzak / ebyte Goto Github PK

Libraries to program and use UART-based EBYTE wireless data transceivers

C++ 100.00%

arduino e32 e44 e44-ttl e50 e50-ttl e51 e51-ttl ebyte iot library lora microcontroller module sx1278 teensy transceiver wireless

ebyte's People

Contributors

Stargazers

Watchers

ebyte's Issues

Channel spacing - 1 MHz ! 433MHz

Hi guys, am I incorrect with my discovery that my E23-TTL-100 433MHz lora Uart radio only does 1MHz channels?!
So ISM band is 433.050 to 434.790 MHz where I am,
The Bandwidth for Lora Phy at 0.3Kb on-air is 125KHz.
That would allow for:
433.000 Channel 1
433.125 Channel 2 - not available on this device.
433.250 Channel 3 - not available on this device.
433.375 Channel 4 - not available on this device.
433.500 Channel 5 -not available on this device.

.....

Really? only 2 ISM 433 MHz usable frequencies?

Please tell me that these is better firmware for operating a finer frequency selection.

Please! Please!
P

3 transmissions instead of 1

Hi,

I have two E220's connected to two Atmega328Ps, they were working just fine, but just recently, instead of sending one transmission every 10 minutes, it sends three at the same time, I've verified this is from the sender, because I have another receiver that also received three transmissions, this only happened overnight for some reason, I've reuploaded the code, but still, it sometimes randomly sends three transmissions for some reason.

Any ideas?

Сommunication between ebyte E22 uart and spi modules.

Hi,
I have an ebyte e22-400t30d module. This module is based on sx1268 chip and has uart interface. It's easy to program, but there is no access to the sx1268 chip settings. I want to establish communication between this module and another one based on the sx1278 chip and having a spi interface. Does anyone know what parameters the ebyte e22-400t30d uses? I need to know Modulation BandWidth, Spreading Factor, Coding Rate and others.

Possible bug, passing the address of an address

Hi Kris,

Many thank for a simple and powerful library.
As I was code reviewing your work, i came across this line of code in method bool EBYTE::ReadModelData()
__s->readBytes((uint8_t*)& _Params, (uint8_t) sizeof(Params));

I suspect this is wrong since it passes the address of the buffer pointer. Ichanged it to
_bool EBYTE::ReadModelData()_s->readBytes((uint8_t*) _Params, (uint8_t) sizeof(Params));

For some reason; it gave me the same data back. May be the compiler did some optimization.

peace

Configuration Problem

Good Morning,
I'm doing a project for university, and I'm using 2 Transceivers Ebyte E32-868T30D.

I can communicate up to a distance of 10/15 meters but more than that.

Can you give me some help in configuring them !?

Hardware serial

Hi,

Sorry if this is the wrong place to post this. I'm struggling to find a good place to ask my question.

Your library has been great while trying to set up a laser gate timing system. I have 2 Arduino Nanos sending and an Uno receiving. I am now onto adding a screen to my setup and have switched to an Adafruit Metro M0 rather than the Uno. The M0 does not allow a software serial.

You mention in your description "Some MCU such as the Teensy, and ESP32 do NOT allow the use of SoftwareSerial to create a communications port. No worries, just hard wire the EBTYE to a dedicated UART port (pin 0 and pin 1 on a teensy 3.2 for Serial1." however, I am very new to programming and can't figure out how to set this up. What do I replace SoftwareSerial loraSerial (2,3); //TX, RX with? I have tried replacing SoftwareSerial with Serial1 but it says "Serial1 does not name a type".

I have my basic code below which works as a receiver on the uno

Thanks in advance,
Ben

#include <SoftwareSerial.h>
#include "EBYTE.h"

//If using direct wiring, use these pin definitions
//#define PIN_M0 4 
//#define PIN_M1 5 
//#define PIN_AX 6

SoftwareSerial loraSerial (2,3); //TX, RX
EBYTE Transceiver(&loraSerial); //PIN_M0, PIN_M1, PIN_AX);

void setup() {
  
  Serial.begin(9600);
  loraSerial.begin(9600);
  Transceiver.init();
  Transceiver.SetMode(MODE_NORMAL);
  Transceiver.SetAirDataRate(ADR_9600);
  Transceiver.SetTransmitPower(OPT_TP17);
  
}

void loop() {
  
   if (loraSerial.available()>0){
    String input = loraSerial.readString();
    Serial.print("I received: "); Serial.println(input);
   }

}

Fail testing with NodeMCU 8266

Hi,
I have two NodeMCU V2 and a pair of E32868TD.
Using this library I can't connect correctly the E32 with MCU.

There are the connections

I have tried much many options, first using assigning -1 to M0, M1, and AUX.
Result : continuous reboot of MCU. It seems the -1 don't work.

The last I used complete GPIO assigning, and also no working.

#define PIN_RX  10
#define PIN_TX  9
#define PIN_M0  4
#define PIN_M1  5
#define PIN_AUX 14

This is my entire receiver code, it is the same as is your sample, plus led :


void setup()
{

  Serial.begin(115200);

  pinMode(LED_BUILTIN, OUTPUT);    // Initialize the LED_BUILTIN pin as an output
  digitalWrite(LED_BUILTIN, HIGH); // Turn the LED off by making the voltage HIGH    }

  ESerial.begin(9600);
  Serial.println("Starting Receiver");

  // this init will set the pinModes for you
  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(0);
  // Chan = 5;
  // 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()
{

  // if the transceiver serial is available, proces incoming data
  // you can also use Transceiver.available()

  if (ESerial.available())
  {

    digitalWrite(LED_BUILTIN, LOW); // Turn the LED on by making the voltage LOW
    delay(50);
    digitalWrite(LED_BUILTIN, HIGH); // Turn the LED off by making the voltage HIGH    }
    delay(50);

    // 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));

    // 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
  {
    delay(50);
  }
}

The result is always

Starting Receiver
trying: 0
trying: 1
trying: 2
trying: 3
trying: 4
----------------------------------------
Model no.: 0
Version  : 0
Features : 0

Mode (HEX/DEC/BIN): 0/0/0
AddH (HEX/DEC/BIN): 0/0/0
AddL (HEX/DEC/BIN): 0/0/0
Sped (HEX/DEC/BIN): 0/0/0
Chan (HEX/DEC/BIN): 0/0/0
Optn (HEX/DEC/BIN): 0/0/0
Addr (HEX/DEC/BIN): 0/0/0

SpeedParityBit (HEX/DEC/BIN)    : 0/0/0
SpeedUARTDataRate (HEX/DEC/BIN) : 0/0/0
SpeedAirDataRate (HEX/DEC/BIN)  : 0/0/0
OptionTrans (HEX/DEC/BIN)       : 0/0/0
OptionPullup (HEX/DEC/BIN)      : 0/0/0
OptionWakeup (HEX/DEC/BIN)      : 0/0/0
OptionFEC (HEX/DEC/BIN)         : 0/0/0
OptionPower (HEX/DEC/BIN)       : 0/0/0
----------------------------------------

It seems doesn't have the connection between NODEMCU and E32.
The RX is powered by 3.3 V, the common as the same as ground of MCU.

I have tested the two NodeMCU and two E32, same issue.
I have changed a lot of wires and I have tested all what I could.
Any chance to run ?

Thanks, regards

Claudio

PrintParameters() not working with E32-TTL-100

I'm using an E32-TTL-100 wired exactly as described in the example and didn't modify a single line of code except by commenting the loop content. Meaning it should just print the current parameters of the module.

But somehow, every value I'm getting printed on screen is 0.
I've tested this on two modules and they both are able to send data to each other, but unable to shown and/or set any configuration through this code.

SendStruct() was not declared in this scope, help

I 've added the library #include "EBYTE.H" and i wrote SendStruct(&name, sizeof(Name)) ; but it says SendStruct() was not declared in this scope, here is the full code:
`#include <EBYTE.h>

struct Name{
int name = 40 ;
int identity = 41 ;
};
Name name;

EBYTE Transceiver(&Serial, 4, 5, 6);

void setup() {
Serial.begin(9600);
}

void loop() {
SendStruct(&name, sizeof(Name)) ;
delay(1000);
}`
What am i doing wrong, can you help me please

Specify the destination address or the channel in the sending

Hello,
I don't know much about low-level programming language :/ it's all new to me.
Is it possible to specify the destination address or the channel only for sending a message ?

Of style:

EBYTE::SendFixedMessage(2, 2, 0x17, "Message to a device");

M0, M1 and Aux logical issues

It appears that the changes for M0 & M1 also assume that Aux is also not used as you never set pinmode for Aux if M0 & M1 are set to -1. That should not be the case as Aux is still very valid.
Also, at line 61 "if ((_M0 == -1) & (_M1 == -1)){" did you mean '&&' as I believe a logical AND is required here and not a bit-wise AND?
Not trying to be picky, just trying to understand.

Originally posted by @tqueale in #11 (comment)

EByte compatibility

hi, Is EBYTE Lora module compatible with others, for example Hoperf, TTGO or AI Thinker?

I tested TTGO and Heltec, they can work with each other. I want to use EBYTEs module as the Gateway and Heltec ASR6502 as the relay controller

Programming mode - baud rate limitation?

@KrisKasprzak Thank you for the inspiration,
After finishing an ESP32 LoRa to MQTT gateway with your library, I started working on a similar library for Python on a RaspberryPi (GPIO header).

https://github.com/vindolin/python_ebyte_lora

When reading the Ebyte datasheet for the E32-868T20D module, I noticed that it reads:

Do the older modules allow programming in different baud rates?

Cheers
Thomas

How can i check if the packet is well received or not?

I really appreciate your work, It helped me a lot in my project. I wanted to check if my data has been received or not by the receiver. How can do this using your library or is there any other way to implement this?

error transmitting structure

Hi! I wrote here in past about issues on parallel use of a E32900t20d and a SHT30 (they use I2C), I solved using I2C on others declared PINs.
My issue now is about the packet transmission structure.
I modified it into:

struct DATA {
unsigned long Count;
float Temperatura;
float Umidita;
String Uuid;
};

It is composed by 2 floats and a string.
The floats are ok, they are received with no problem but the string is sended for example with this value
9C9C1FE20168

and it is received with strange characters.
What could be the problem?
The structure is the same in the sending sketch and in the receiving sketch.

Thank you for your great job and your support!
Bye

Luca Menghini

FEC configuration

Hi,
Thank you for this excellent library.
I do not know how I did it, but I have an E32-868T20D module where Sped = 2 and Optn = 0.
I would like to change these settings (mostly because FEC = 0), but I did not find the method. Can you help me ? Thank you in advance.
Philippe

E32-868T20D

Hi,
I need some help I can get the code running.
I want to program and address with 1 coordinator 5 slave.
desired address in the communication with the lora on the arduino on led i want to burn. or I want to extinguish.
How can I do it.Thank you.

===Coordinator===
Transceiver.init();
Transceiver.SetMode(MODE_NORMAL);
Transceiver.Reset();