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arduino-rf24.ino
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arduino-rf24.ino
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#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"
#include "printf.h"
#define SERIAL_BAUDRATE 57600
// PreAmplifier level for the nRF
// Lower this to reduce power consumption. This will reduce range.
rf24_pa_dbm_e NRF_PA_LEVEL = RF24_PA_MIN;
// Speed for the nrf module
// RF24_250KBPS / RF24_1MBPS / RF24_2MBPS
// Reduce it to improve reliability
rf24_datarate_e NRF_SPEED = RF24_250KBPS;
// Channel for the nrf module
// 76 is default safe channel in RF24
uint8_t NRF_CHANNEL = 0x4c;
// Struct of RF data
uint8_t payload[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
// Set up nRF24L01 radio on SPI bus plus pins 7 & 8
RF24 radio(7, 8);
void setup() {
Serial.begin(SERIAL_BAUDRATE);
printf_begin();
radio.begin();
radio.setChannel(NRF_CHANNEL);
// Max number of retries and max delay between them
radio.setRetries(15, 15);
// Reduce payload size to improve reliability
radio.setPayloadSize(16);
// Set the datarate
radio.setDataRate(NRF_SPEED);
// Use the largest CRC
radio.setCRCLength(RF24_CRC_16);
// Ensure auto ACK is enabled
radio.setAutoAck(1);
// Use the adapted PA level
radio.setPALevel(NRF_PA_LEVEL);
radio.openReadingPipe(1, 0xE056D446D0LL);
radio.startListening();
// for debug
//radio.printDetails();
}
void loop() {
if(radio.available()) {
radio.read(&payload, sizeof(payload));
Serial.write(payload, sizeof(payload));
// for debug
//for(int i=0; i<sizeof(payload); i++) {
// Serial.print(String(payload[i],HEX));
//}
}
delay(100);
}