kopia lustrzana https://github.com/jgromes/RadioLib
128 wiersze
3.1 KiB
C++
128 wiersze
3.1 KiB
C++
/*
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RadioLib RF69 Receive with Interrupts Example
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This example listens for FSK transmissions and tries to
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receive them. Once a packet is received, an interrupt is
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triggered.
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For default module settings, see the wiki page
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https://github.com/jgromes/RadioLib/wiki/Default-configuration#rf69sx1231
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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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// RF69 has the following connections:
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// CS pin: 10
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// DIO0 pin: 2
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// RESET pin: 3
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RF69 radio = new Module(10, 2, 3);
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// or using RadioShield
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// https://github.com/jgromes/RadioShield
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//RF69 radio = RadioShield.ModuleA;
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void setup() {
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Serial.begin(9600);
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// initialize RF69 with default settings
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Serial.print(F("[RF69] 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 new packet is received
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radio.setPacketReceivedAction(setFlag);
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// start listening for packets
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Serial.print(F("[RF69] Starting to listen ... "));
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state = radio.startReceive();
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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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// if needed, 'listen' mode can be disabled by calling
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// any of the following methods:
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//
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// radio.standby()
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// radio.sleep()
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// radio.transmit();
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// radio.receive();
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// radio.readData();
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}
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// flag to indicate that a packet was received
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volatile bool receivedFlag = 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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// we got a packet, set the flag
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receivedFlag = 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(receivedFlag) {
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// reset flag
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receivedFlag = false;
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// you can read received data as an Arduino String
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String str;
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int state = radio.readData(str);
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// you can also read received data as byte array
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/*
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byte byteArr[8];
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int numBytes = radio.getPacketLength();
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int state = radio.readData(byteArr, numBytes);
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*/
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if (state == RADIOLIB_ERR_NONE) {
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// packet was successfully received
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Serial.println(F("[RF69] Received packet!"));
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// print data of the packet
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Serial.print(F("[RF69] Data:\t\t"));
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Serial.println(str);
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// print RSSI (Received Signal Strength Indicator)
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// of the last received packet
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Serial.print(F("[RF69] RSSI:\t\t"));
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Serial.print(radio.getRSSI());
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Serial.println(F(" dBm"));
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} else if (state == RADIOLIB_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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} else {
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// some other error occurred
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Serial.print(F("failed, code "));
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Serial.println(state);
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}
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// put module back to listen mode
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radio.startReceive();
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}
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}
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