kopia lustrzana https://github.com/jgromes/RadioLib
101 wiersze
2.7 KiB
C++
101 wiersze
2.7 KiB
C++
/*
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RadioLib nRF24 Blocking Receive Example
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This example listens for FSK transmissions using nRF24 2.4 GHz radio module.
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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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- data rate
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- transmit pipe on transmitter must match receive pipe on receiver
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Using blocking receive is not recommended, as it will lead
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to significant amount of timeouts, inefficient use of processor
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time and can some miss packets!
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Instead, interrupt receive is recommended.
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For default module settings, see the wiki page
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https://github.com/jgromes/RadioLib/wiki/Default-configuration#nrf24
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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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// nRF24 has the following connections:
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// CS pin: 10
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// IRQ pin: 2
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// CE pin: 3
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nRF24 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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//nRF24 radio = RadioShield.ModuleA;
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void setup() {
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Serial.begin(9600);
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// initialize nRF24 with default settings
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Serial.print(F("[nRF24] 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 receive pipe 0 address
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// NOTE: address width in bytes MUST be equal to the
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// width set in begin() or setAddressWidth()
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// methods (5 by default)
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Serial.print(F("[nRF24] Setting address for receive pipe 0 ... "));
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byte addr[] = {0x01, 0x23, 0x45, 0x67, 0x89};
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state = radio.setReceivePipe(0, addr);
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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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}
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void loop() {
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Serial.print(F("[nRF24] Waiting for incoming transmission ... "));
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// you can receive data as an Arduino String
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// NOTE: receive() is a blocking method!
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// See example ReceiveInterrupt for details
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// on non-blocking reception method.
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String str;
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int state = radio.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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int state = radio.receive(byteArr, 8);
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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("success!"));
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// print the data of the packet
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Serial.print(F("[nRF24] Data:\t\t"));
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Serial.println(str);
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} else if (state == RADIOLIB_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 {
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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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}
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