109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
/*
|
|
RadioLib SX126x Receive Example
|
|
|
|
This example listens for LoRa transmissions using SX126x Lora modules.
|
|
To successfully receive data, the following settings have to be the same
|
|
on both transmitter and receiver:
|
|
- carrier frequency
|
|
- bandwidth
|
|
- spreading factor
|
|
- coding rate
|
|
- sync word
|
|
- preamble length
|
|
|
|
Other modules from SX126x family can also be used.
|
|
|
|
For full API reference, see the GitHub Pages
|
|
https://jgromes.github.io/RadioLib/
|
|
*/
|
|
|
|
// include the library
|
|
#include <RadioLib.h>
|
|
|
|
// SX1262 has the following connections:
|
|
// NSS pin: 10
|
|
// DIO1 pin: 2
|
|
// NRST pin: 3
|
|
// BUSY pin: 9
|
|
SX1262 lora = new Module(10, 2, 3, 9);
|
|
|
|
// or using RadioShield
|
|
// https://github.com/jgromes/RadioShield
|
|
//SX1262 lora = RadioShield.ModuleA;
|
|
|
|
void setup() {
|
|
Serial.begin(9600);
|
|
|
|
// initialize SX1262 with default settings
|
|
Serial.print(F("[SX1262] Initializing ... "));
|
|
// carrier frequency: 434.0 MHz
|
|
// bandwidth: 125.0 kHz
|
|
// spreading factor: 9
|
|
// coding rate: 7
|
|
// sync word: 0x1424 (private network)
|
|
// output power: 14 dBm
|
|
// current limit: 60 mA
|
|
// preamble length: 8 symbols
|
|
// TCXO voltage: 1.6 V (set to 0 to not use TCXO)
|
|
// CRC: enabled
|
|
int state = lora.begin();
|
|
if (state == ERR_NONE) {
|
|
Serial.println(F("success!"));
|
|
} else {
|
|
Serial.print(F("failed, code "));
|
|
Serial.println(state);
|
|
while (true);
|
|
}
|
|
}
|
|
|
|
void loop() {
|
|
Serial.print(F("[SX1262] Waiting for incoming transmission ... "));
|
|
|
|
// you can receive data as an Arduino String
|
|
// NOTE: receive() is a blocking method!
|
|
// See example ReceiveInterrupt for details
|
|
// on non-blocking reception method.
|
|
String str;
|
|
int state = lora.receive(str);
|
|
|
|
// you can also receive data as byte array
|
|
/*
|
|
byte byteArr[8];
|
|
int state = lora.receive(byteArr, 8);
|
|
*/
|
|
|
|
if (state == ERR_NONE) {
|
|
// packet was successfully received
|
|
Serial.println(F("success!"));
|
|
|
|
// print the data of the packet
|
|
Serial.print(F("[SX1262] Data:\t\t"));
|
|
Serial.println(str);
|
|
|
|
// print the RSSI (Received Signal Strength Indicator)
|
|
// of the last received packet
|
|
Serial.print(F("[SX1262] RSSI:\t\t"));
|
|
Serial.print(lora.getRSSI());
|
|
Serial.println(F(" dBm"));
|
|
|
|
// print the SNR (Signal-to-Noise Ratio)
|
|
// of the last received packet
|
|
Serial.print(F("[SX1262] SNR:\t\t"));
|
|
Serial.print(lora.getSNR());
|
|
Serial.println(F(" dB"));
|
|
|
|
} else if (state == ERR_RX_TIMEOUT) {
|
|
// timeout occurred while waiting for a packet
|
|
Serial.println(F("timeout!"));
|
|
|
|
} else if (state == ERR_CRC_MISMATCH) {
|
|
// packet was received, but is malformed
|
|
Serial.println(F("CRC error!"));
|
|
|
|
} else {
|
|
// some other error occurred
|
|
Serial.print(F("failed, code "));
|
|
Serial.println(state);
|
|
|
|
}
|
|
}
|