Hi experts:
I’m knew here but did quite some due diligence to attempt a connection but still failing.
I’m trying to connect my HELTEC ESP32-S3 (QFN56) (revision v0.2) (ESP32-S3 V3) to my RAK wireless RAK7289V2 connected to TTN but so far failing.
Here is my code:
#include <LoRa.h>
// SPI Pin Configuration for Heltec LoRa 32 V3
#define LORA_SCK 9 // SCK pin
#define LORA_MISO 11 // MISO pin
#define LORA_MOSI 10 // MOSI pin
#define LORA_SS 8 // SS pin
#define LORA_RST 12 // RST pin
#define LORA_DIO0 14 // DIO0 pin
#define LORA_BAND 915E6 // Frequency for your region
void setup() {
Serial.begin(115200);
while (!Serial);
// Step 1: Basic Serial Communication
Serial.println("Step 1: Basic Serial Communication - Success!");
// Step 2: Initialize SPI
Serial.println("Step 2: Initializing SPI...");
// Check each pin individually
Serial.print("Configuring SCK pin: ");
Serial.println(LORA_SCK);
pinMode(LORA_SCK, OUTPUT);
Serial.println("SCK pin configured successfully.");
Serial.print("Configuring MISO pin: ");
Serial.println(LORA_MISO);
pinMode(LORA_MISO, INPUT);
Serial.println("MISO pin configured successfully.");
Serial.print("Configuring MOSI pin: ");
Serial.println(LORA_MOSI);
pinMode(LORA_MOSI, OUTPUT);
Serial.println("MOSI pin configured successfully.");
Serial.print("Configuring SS pin: ");
Serial.println(LORA_SS);
pinMode(LORA_SS, OUTPUT);
Serial.println("SS pin configured successfully.");
// Initialize SPI
SPI.begin(LORA_SCK, LORA_MISO, LORA_MOSI, LORA_SS);
Serial.println("SPI initialized.");
// Step 3: Initialize LoRa
Serial.println("Step 3: Initializing LoRa...");
// Set LoRa pins
Serial.print("Configuring RST pin: ");
Serial.println(LORA_RST);
pinMode(LORA_RST, OUTPUT);
Serial.println("RST pin configured successfully.");
Serial.print("Configuring DIO0 pin: ");
Serial.println(LORA_DIO0);
pinMode(LORA_DIO0, INPUT);
Serial.println("DIO0 pin configured successfully.");
// Set LoRa pins in the library
Serial.println("Setting LoRa pins...");
LoRa.setPins(LORA_SS, LORA_RST, LORA_DIO0);
// Initialize LoRa
Serial.println("Calling LoRa.begin (LORA_BAND)...");
if (!LoRa.begin(LORA_BAND)) {
Serial.println("Starting LoRa failed (LORA_BAND)!");
while (1);
}
Serial.println("LoRa Initial setup done.");
// Send a simple message
Serial.println("Sending packet: Hello LoRa");
// Start packet
if (LoRa.beginPacket()) {
Serial.println("LoRa packet begun");
} else {
Serial.println("Failed to begin LoRa packet");
}
// Write packet content
LoRa.print("Hello LoRa");
Serial.println("LoRa packet content written");
// End packet
if (LoRa.endPacket()) {
Serial.println("LoRa packet sent");
} else {
Serial.println("Failed to send LoRa packet");
}
// Blink LED to indicate success
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, HIGH);
}
void loop() {
// Blink LED to indicate loop is running
digitalWrite(LED_BUILTIN, HIGH);
delay(1000);
digitalWrite(LED_BUILTIN, LOW);
delay(1000);
}
And the error seems to be when trying to initialize (LORA_BAND) here:
Serial.println("Calling LoRa.begin (LORA_BAND)...");
if (!LoRa.begin(LORA_BAND)) {
Serial.println("Starting LoRa failed (LORA_BAND)!");
while (1);
Here is the output:
18:27:55.432 -> load:0x403c9700,len:0x4
18:27:55.432 -> load:0x403c9704,len:0xad0
18:27:55.432 -> load:0x403cc700,len:0x29d8
18:27:55.432 -> entry 0x403c9880
18:27:55.530 -> Step 1: Basic Serial Communication - Success!
18:27:55.530 -> Step 2: Initializing SPI...
18:27:55.530 -> Configuring SCK pin: 9
18:27:55.530 -> SCK pin configured successfully.
18:27:55.530 -> Configuring MISO pin: 11
18:27:55.530 -> MISO pin configured successfully.
18:27:55.530 -> Configuring MOSI pin: 10
18:27:55.563 -> MOSI pin configured successfully.
18:27:55.563 -> Configuring SS pin: 8
18:27:55.563 -> SS pin configured successfully.
18:27:55.563 -> SPI initialized.
18:27:55.563 -> Step 3: Initializing LoRa...
18:27:55.563 -> Configuring RST pin: 12
18:27:55.563 -> RST pin configured successfully.
18:27:55.563 -> Configuring DIO0 pin: 14
18:27:55.563 -> DIO0 pin configured successfully.
18:27:55.563 -> Setting LoRa pins...
18:27:55.563 -> Calling LoRa.begin (LORA_BAND)...
18:27:55.596 -> Starting LoRa failed (LORA_BAND)!
PIN configuration seems to be succesful.
Thanks in advanced for your help. I’m using Arduino IDE - Version: 2.3.2