i'm using 2 of LLCC68 LoRa E220-400T22D modules connected with 2 seperate arduino leonardos:
E220-400T22D_LLCC68_Lora_Module_Chengdu Ebyte Electronic Technology Co., Ltd
both circuits are identical as shown in attached fritzing sketch. the power comes from leonardo's USB.
the sketches' code for transmitter/receiver are simple enough:
Receiver:
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 3);
void setup()
{
Serial.begin(115200);
delay(500);
mySerial.begin(9600);
}
void loop()
{
if (mySerial.available()) {
Serial.println(mySerial.read());
}
}
Transmitter:
#include <TimerEvent.h>
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 3);
TimerEvent printInfoTimer;
void setup()
{
Serial.begin(115200);
delay(500);
printInfoTimer.set(1000, printInfo);
mySerial.begin(9600);
}
void loop()
{
printInfoTimer.update();
}
void printInfo()
{
mySerial.write("hello");
}
the problem is that i'm not getting any messages in the receiver side. i measured the receiving LORA tx pin with an oscilloscope, and it seems like messages ARE being transmitted every 1 second to the leonardo module (i can see a graph of voltage change every second, and if i turn off the transmitter module - the graph stops from appearing - so something is indeed received from the transmitter) but "mySerial.available()" never got into.
any idea why or what is wrong? i also tried the same with the "LoRa_E220.h" library as shown in:
https://www.mischianti.org/2022/03/11/ebyte-lora-e220-llcc68-device-for-arduino-esp32-or-esp8266-specs-and-basic-use-1/
but i get the exact same behavior...
