kopia lustrzana https://github.com/jgromes/RadioLib
111 wiersze
2.8 KiB
C++
111 wiersze
2.8 KiB
C++
/*
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RadioLib LR11x0 Channel Activity Detection Example
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This example uses LR1110 to scan the current LoRa
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channel and detect ongoing LoRa transmissions.
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Unlike SX127x CAD, LR11x0 can detect any part
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of LoRa transmission, not just the preamble.
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Other modules from LR11x0 family can also be used.
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For default module settings, see the wiki page
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https://github.com/jgromes/RadioLib/wiki/Default-configuration#lr11x0---lora-modem
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For full API reference, see the GitHub Pages
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https://jgromes.github.io/RadioLib/
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*/
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// include the library
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#include <RadioLib.h>
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// LR1110 has the following connections:
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// NSS pin: 10
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// DIO1 pin: 2
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// NRST pin: 3
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// BUSY pin: 9
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LR1110 radio = new Module(10, 2, 3, 9);
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// or using RadioShield
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// https://github.com/jgromes/RadioShield
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//LR1110 radio = RadioShield.ModuleA;
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void setup() {
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Serial.begin(9600);
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// initialize LR1110 with default settings
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Serial.print(F("[LR1110] Initializing ... "));
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int state = radio.begin();
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if (state == RADIOLIB_ERR_NONE) {
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Serial.println(F("success!"));
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} else {
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Serial.print(F("failed, code "));
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Serial.println(state);
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while (true);
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}
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// set the function that will be called
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// when LoRa packet or timeout is detected
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radio.setDio1Action(setFlag);
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// start scanning the channel
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Serial.print(F("[LR1110] Starting scan for LoRa preamble ... "));
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state = radio.startChannelScan();
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if (state == RADIOLIB_ERR_NONE) {
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Serial.println(F("success!"));
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} else {
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Serial.print(F("failed, code "));
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Serial.println(state);
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}
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}
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// flag to indicate that a packet was detected or CAD timed out
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volatile bool scanFlag = false;
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// this function is called when a complete packet
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// is received by the module
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// IMPORTANT: this function MUST be 'void' type
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// and MUST NOT have any arguments!
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#if defined(ESP8266) || defined(ESP32)
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ICACHE_RAM_ATTR
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#endif
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void setFlag(void) {
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// something happened, set the flag
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scanFlag = true;
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}
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void loop() {
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// check if the flag is set
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if(scanFlag) {
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// reset flag
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scanFlag = false;
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// check CAD result
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int state = radio.getChannelScanResult();
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if (state == RADIOLIB_LORA_DETECTED) {
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// LoRa packet was detected
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Serial.println(F("[LR1110] Packet detected!"));
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} else if (state == RADIOLIB_CHANNEL_FREE) {
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// channel is free
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Serial.println(F("[LR1110] Channel is free!"));
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} else {
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// some other error occurred
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Serial.print(F("[LR1110] Failed, code "));
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Serial.println(state);
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}
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// start scanning the channel again
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Serial.print(F("[LR1110] Starting scan for LoRa preamble ... "));
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state = radio.startChannelScan();
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if (state == RADIOLIB_ERR_NONE) {
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Serial.println(F("success!"));
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} else {
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Serial.print(F("failed, code "));
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Serial.println(state);
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}
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}
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}
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