Hi can anyone pleas help me? I bought two nrf24l01s and basses but I cannot get my arduino uno or nano to communicate with it. I checked my wireing and it is all right can anyone pleas help me. Thank you.
master uno
/*
Demonstrates sending and receiving packets of different length.
Radio Arduino
CE -> 9
CSN -> 10 (Hardware SPI SS)
MOSI -> 11 (Hardware SPI MOSI)
MISO -> 12 (Hardware SPI MISO)
SCK -> 13 (Hardware SPI SCK)
IRQ -> No connection
VCC -> No more than 3.6 volts
GND -> GND
*/
#include <SPI.h>
#include <NRFLite.h>
const static uint8_t RADIO_ID = 1;
const static uint8_t DESTINATION_RADIO_ID = 0;
const static uint8_t PIN_RADIO_CE = 9;
const static uint8_t PIN_RADIO_CSN = 10;
struct RadioPacket1
{
uint8_t FromRadioId;
uint8_t Counter;
};
struct RadioPacket2
{
uint8_t FromRadioId;
char Message[31]; // Note the max packet size is 32, so 31 is all we can use here.
};
NRFLite _radio;
RadioPacket1 _radioData1;
RadioPacket2 _radioData2;
void setup()
{
Serial.begin(115200);
if (!_radio.init(RADIO_ID, PIN_RADIO_CE, PIN_RADIO_CSN))
{
Serial.println("Cannot communicate with radio");
while (1); // Wait here forever.
}
_radioData1.FromRadioId = RADIO_ID;
_radioData2.FromRadioId = RADIO_ID;
}
void loop()
{
// Pick a number from 0 - 60,000.
uint16_t randomNumber = random(60001);
if (randomNumber > 30000)
{
// Send RadioPacket1.
_radioData1.Counter++;
Serial.print("Sending ");
Serial.print(_radioData1.Counter);
if (_radio.send(DESTINATION_RADIO_ID, &_radioData1, sizeof(_radioData1)))
{
Serial.println("...Success");
}
else
{
Serial.println("...Failed");
}
}
else
{
// Send RadioPacket2.
// Create a message and assign it to the packet.
// Strings need to be converted to a char array and note they cannot be longer
// than 31 characters since that is the size of _radioData2.Message.
String msg = "Hello " + String(randomNumber);
msg.toCharArray(_radioData2.Message, msg.length() + 1);
Serial.print("Sending '");
Serial.print(msg);
Serial.print("'");
if (_radio.send(DESTINATION_RADIO_ID, &_radioData2, sizeof(_radioData2)))
{
Serial.println("...Success");
}
else
{
Serial.println("...Failed");
}
}
delay(1000);
}
slave nano
/*
Demonstrates sending and receiving packets of different length.
Radio Arduino
CE -> 9
CSN -> 10 (Hardware SPI SS)
MOSI -> 11 (Hardware SPI MOSI)
MISO -> 12 (Hardware SPI MISO)
SCK -> 13 (Hardware SPI SCK)
IRQ -> No connection
VCC -> No more than 3.6 volts
GND -> GND
*/
#include <SPI.h>
#include <NRFLite.h>
const static uint8_t RADIO_ID = 0;
const static uint8_t PIN_RADIO_CE = 9;
const static uint8_t PIN_RADIO_CSN = 10;
struct RadioPacket1
{
uint8_t FromRadioId;
uint8_t Counter;
};
struct RadioPacket2
{
uint8_t FromRadioId;
char Message[31]; // Note the max packet size is 32, so 31 is all we can use here.
};
NRFLite _radio;
RadioPacket1 _radioData1;
RadioPacket2 _radioData2;
void setup()
{
Serial.begin(115200);
if (!_radio.init(RADIO_ID, PIN_RADIO_CE, PIN_RADIO_CSN))
{
Serial.println("Cannot communicate with radio");
while (1); // Wait here forever.
}
}
void loop()
{
// 'hasData' returns the size of the packet that was received, or 0 if there is no data.
uint8_t packetSize = _radio.hasData();
if (packetSize > 0)
{
if (packetSize == sizeof(RadioPacket1))
{
_radio.readData(&_radioData1);
Serial.print("Received ");
Serial.print(_radioData1.Counter);
Serial.print(" from radio ");
Serial.println(_radioData1.FromRadioId);
}
else if (packetSize == sizeof(RadioPacket2))
{
_radio.readData(&_radioData2);
String msg = String(_radioData2.Message);
Serial.print("Received '");
Serial.print(msg);
Serial.print("' from radio ");
Serial.println(_radioData2.FromRadioId);
}
else
{
// We have a packet with an unexpected size, either an invalid packet or packet
// that was sent from a radio that we cannot handle, so remove it from the radio.
Serial.print("Received packet with length '");
Serial.print(packetSize);
Serial.println("', it will be discarded");
_radio.discardData(packetSize);
}
}
}
