OnReceive CallbackCalled

[darrylburke]

Board: Heltec HTIT-WB32LA Espressif: ESP32 Arduino 0.0.1 (Latest as of Mar19th 2018) Heltec: most recent as of Mar 19th 2018) Arduino IDE: 1.8.5

I've tried several ways to configure the OnReceive Call back, but it never gets called.

LoRa.onReceive(cbk); LoRa.receive();

even tried the suggestions to attach an interrupt to pin 26 DIO0 pinMode(26, INPUT); attachInterrupt(digitalPinToInterrupt(26), cbkCallback, CHANGE);

but the callback never gets called.. (If I try the polling mechanism there is data and it can be read, so I know it's receiving data from the sender)

[ramazanulucay]

I have a same problem. How can I fix it.

[kadirulucay]

Hi Darrylburke,

LORA.CPP__

1. The Spreadingfactor has to be at the same value as the sender.
2. _Spisettings 10E6 make sure it is.
3. Loraclass::SetSpreadingFactor(int sf) else part Optimize and threshold same value as the sender make sure it is.

Example Code :

#include <SPI.h> #include <LoRa.h>

#define SCK 5
#define MISO 19
#define MOSI 27
#define SS 18
#define RST 14
#define DI0 26

#define BAND 433E6
#define PABOOST true

void setup() { Serial.begin(115200); while (!Serial);

Serial.println("LoRa Receiver Callback"); SPI.begin(SCK,MISO,MOSI,SS); LoRa.setPins(SS,RST,DI0); if (!LoRa.begin(BAND,PABOOST)) { Serial.println("Starting LoRa failed!"); while (1); }

LoRa.onReceive(onReceive);

LoRa.receive(); }

void loop() {

}

void onReceive(int packetSize) { Serial.print("Received packet '"); for (int i = 0; i < packetSize; i++) { Serial.print(String(LoRa.read(),HEX)); } Serial.print("' with RSSI "); Serial.println(LoRa.packetRssi()); }

good luck 🥇