93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
/*
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* KiteLib SX127x Receive Example
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*
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* This example listens for LoRa transmissions using SX127x Lora modules.
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* To successfully receive data, the following settings have to be the same
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* on both transmitter and receiver:
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* - carrier frequency
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* - bandwidth
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* - spreading factor
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* - coding rate
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* - sync word
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*
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* Other modules from SX127x family can also be used.
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* SX1272 lora = Kite.ModuleA;
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* SX1273 lora = Kite.ModuleA;
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* SX1276 lora = Kite.ModuleA;
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* SX1277 lora = Kite.ModuleA;
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* SX1279 lora = Kite.ModuleA;
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*/
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// include the library
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#include <KiteLib.h>
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// SX1278 module is in slot A on the shield
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SX1278 lora = Kite.ModuleA;
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void setup() {
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Serial.begin(9600);
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// initialize SX1278 with default settings
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Serial.print(F("[SX1278] Initializing ... "));
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// carrier frequency: 434.0 MHz
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// bandwidth: 125.0 kHz
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// spreading factor: 9
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// coding rate: 7
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// sync word: 0x12
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// output power: 17 dBm
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byte state = lora.begin();
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if(state == ERR_NONE) {
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Serial.println(F("success!"));
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} else {
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Serial.print(F("failed, code 0x"));
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Serial.println(state, HEX);
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while(true);
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}
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}
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void loop() {
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Serial.print(F("[SX1278] Waiting for incoming transmission ... "));
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// you can receive data as an Arduino String
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String str;
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byte state = lora.receive(str);
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// you can also receive data as byte array
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/*
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byte byteArr[8];
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byte state = lora.receive(byteArr, 8);
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*/
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if(state == ERR_NONE) {
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// packet was successfully received
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Serial.println(F("success!"));
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// print the data of the packet
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Serial.print("[SX1278] Data:\t\t");
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Serial.println(str);
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//print the measured data rate
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Serial.print("[SX1278] Datarate:\t");
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Serial.print(lora.dataRate);
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Serial.println(" bps");
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//print the RSSI (Received Signal Strength Indicator) of the last received packet
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Serial.print("[SX1278] RSSI:\t\t");
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Serial.print(lora.lastPacketRSSI);
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Serial.println(" dBm");
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//print the SNR (Signal-to-Noise Ratio) of the last received packet
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Serial.print("[SX1278] SNR:\t\t");
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Serial.print(lora.lastPacketSNR);
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Serial.println(" dBm");
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} else if(state == ERR_RX_TIMEOUT) {
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// timeout occurred while waiting for a packet
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Serial.println(F("timeout!"));
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} else if(state == ERR_CRC_MISMATCH) {
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// packet was received, but is malformed
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Serial.println(F("CRC error!"));
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}
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}
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