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Merge pull request #1 from nicklasb/nicklasb-patch-narrowing
Fix narrowing conversion error on ESP-IDF
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185 changes: 185 additions & 0 deletions
185
...x/SX126x_Channel_Activity_Detection_Receive/SX126x_Channel_Activity_Detection_Receive.ino
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,185 @@ | ||
| /* | ||
| RadioLib SX126x Receive after Channel Activity Detection Example | ||
| This example uses SX1262 to scan the current LoRa | ||
| channel and detect ongoing LoRa transmissions. | ||
| Unlike SX127x CAD, SX126x can detect any part | ||
| of LoRa transmission, not just the preamble. | ||
| If a packet is detected, the module will switch | ||
| to receive mode and receive the packet. | ||
| Other modules from SX126x family can also be used. | ||
| For default module settings, see the wiki page | ||
| https://github.com/jgromes/RadioLib/wiki/Default-configuration#sx126x---lora-modem | ||
| 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 radio = new Module(10, 2, 3, 9); | ||
|
|
||
| // or using RadioShield | ||
| // https://github.com/jgromes/RadioShield | ||
| //SX1262 radio = RadioShield.ModuleA; | ||
|
|
||
| // or using CubeCell | ||
| //SX1262 radio = new Module(RADIOLIB_BUILTIN_MODULE); | ||
|
|
||
| void setup() { | ||
| Serial.begin(9600); | ||
|
|
||
| // initialize SX1262 with default settings | ||
| Serial.print(F("[SX1262] Initializing ... ")); | ||
| int state = radio.begin(); | ||
| if (state == RADIOLIB_ERR_NONE) { | ||
| Serial.println(F("success!")); | ||
| } else { | ||
| Serial.print(F("failed, code ")); | ||
| Serial.println(state); | ||
| while (true); | ||
| } | ||
|
|
||
| // set the function that will be called | ||
| // when LoRa packet or timeout is detected | ||
| radio.setDio1Action(setFlag); | ||
|
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||
| // start scanning the channel | ||
| Serial.print(F("[SX1262] Starting scan for LoRa preamble ... ")); | ||
| state = radio.startChannelScan(); | ||
| if (state == RADIOLIB_ERR_NONE) { | ||
| Serial.println(F("success!")); | ||
| } else { | ||
| Serial.print(F("failed, code ")); | ||
| Serial.println(state); | ||
| } | ||
| } | ||
|
|
||
| // flag to indicate that a packet was detected or CAD timed out | ||
| volatile bool scanFlag = false; | ||
|
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||
| bool receiving = false; | ||
|
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||
| // this function is called when a complete packet | ||
| // is received by the module | ||
| // IMPORTANT: this function MUST be 'void' type | ||
| // and MUST NOT have any arguments! | ||
| #if defined(ESP8266) || defined(ESP32) | ||
| ICACHE_RAM_ATTR | ||
| #endif | ||
| void setFlag(void) { | ||
| // something happened, set the flag | ||
| scanFlag = true; | ||
| } | ||
|
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||
| void loop() { | ||
| // check if the flag is set | ||
| if(scanFlag) { | ||
| int state = RADIOLIB_ERR_NONE; | ||
|
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||
| // reset flag | ||
| scanFlag = false; | ||
|
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||
| // check ongoing reception | ||
| if(receiving) { | ||
| // DIO triggered while reception is ongoing | ||
| // that means we got a packet | ||
|
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||
| // you can read received data as an Arduino String | ||
| String str; | ||
| state = radio.readData(str); | ||
|
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||
| // you can also read received data as byte array | ||
| /* | ||
| byte byteArr[8]; | ||
| state = radio.readData(byteArr, 8); | ||
| */ | ||
|
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||
| if (state == RADIOLIB_ERR_NONE) { | ||
| // packet was successfully received | ||
| Serial.println(F("[SX1262] Received packet!")); | ||
|
|
||
| // print data of the packet | ||
| Serial.print(F("[SX1262] Data:\t\t")); | ||
| Serial.println(str); | ||
|
|
||
| // print RSSI (Received Signal Strength Indicator) | ||
| Serial.print(F("[SX1262] RSSI:\t\t")); | ||
| Serial.print(radio.getRSSI()); | ||
| Serial.println(F(" dBm")); | ||
|
|
||
| // print SNR (Signal-to-Noise Ratio) | ||
| Serial.print(F("[SX1262] SNR:\t\t")); | ||
| Serial.print(radio.getSNR()); | ||
| Serial.println(F(" dB")); | ||
|
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||
| // print frequency error | ||
| Serial.print(F("[SX1262] Frequency error:\t")); | ||
| Serial.print(radio.getFrequencyError()); | ||
| Serial.println(F(" Hz")); | ||
|
|
||
| } else { | ||
| // some other error occurred | ||
| Serial.print(F("[SX1262] Failed, code ")); | ||
| Serial.println(state); | ||
|
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||
| } | ||
|
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| // reception is done now | ||
| receiving = false; | ||
|
|
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| } else { | ||
| // check CAD result | ||
| state = radio.getChannelScanResult(); | ||
|
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||
| if (state == RADIOLIB_LORA_DETECTED) { | ||
| // LoRa packet was detected | ||
| Serial.print(F("[SX1262] Packet detected, starting reception ... ")); | ||
| state = radio.startReceive(); | ||
| if (state == RADIOLIB_ERR_NONE) { | ||
| Serial.println(F("success!")); | ||
| } else { | ||
| Serial.print(F("failed, code ")); | ||
| Serial.println(state); | ||
| } | ||
|
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| // set the flag for ongoing reception | ||
| receiving = true; | ||
|
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| } else if (state == RADIOLIB_CHANNEL_FREE) { | ||
| // channel is free | ||
| Serial.println(F("[SX1262] Channel is free!")); | ||
|
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||
| } else { | ||
| // some other error occurred | ||
| Serial.print(F("[SX1262] Failed, code ")); | ||
| Serial.println(state); | ||
|
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| } | ||
|
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| } | ||
|
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| // if we're not receiving, start scanning again | ||
| if(!receiving) { | ||
| Serial.print(F("[SX1262] Starting scan for LoRa preamble ... ")); | ||
| state = radio.startChannelScan(); | ||
| if (state == RADIOLIB_ERR_NONE) { | ||
| Serial.println(F("success!")); | ||
| } else { | ||
| Serial.print(F("failed, code ")); | ||
| Serial.println(state); | ||
| } | ||
|
|
||
| } | ||
|
|
||
| } | ||
|
|
||
| } |
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