Arduino单片机短距离无线温度实时传输代码

ID:1083792 · 发表于 2023-6-23 01:52

基本元器件：LCD1602显示（IIC驱动）、DS18B20温度传感器、NRF24L01、Arduino-UNO板。

有LCD1602显示的接收端主机代码：
#include <OneWire.h>
#include <DallasTemperature.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#define CE_PIN 9
#define CSN_PIN 10
#define CHANNEL 108
// DS18B20温度模块连接的引脚
#define ONE_WIRE_BUS 2

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

RF24 radio(CE_PIN, CSN_PIN);
const byte address[6] = "00001";
// I2C显示屏连接的地址
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  Serial.begin(9600);
  sensors.begin();
  radio.begin();
  radio.setChannel(CHANNEL);
  radio.openReadingPipe(0, address);
  radio.startListening();
  lcd.init();
  lcd.backlight();
  }

void loop() {
  if(radio.available()) {
float indoorTemp;
radio.read(&indoorTemp, sizeof(indoorTemp));
Serial.print("Indoor:");
Serial.print(indoorTemp);
Serial.print("℃");
sensors.requestTemperatures();
float outdoorTemp = sensors.getTempCByIndex(0);
lcd.setCursor(0, 0);
lcd.print("Indoor:");
lcd.print(outdoorTemp);
lcd.print("C");
lcd.setCursor(0, 1);
lcd.print("Outdoor:");
lcd.print(indoorTemp);
lcd.print("C");
}
delay(100);
}

发射外界温度信息的从机代码：
#include <OneWire.h>
#include <DallasTemperature.h>
#include <nRF24L01.h>
#include <RF24.h>
#define CE_PIN 9
#define CSN_PIN 10
#define CHANNEL 108// DS18B20温度模块连接的引脚
#define ONE_WIRE_BUS 2

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

RF24 radio(CE_PIN, CSN_PIN);
const byte address[6] = "00001";

void setup() {
  Serial.begin(9600);
  sensors.begin();
  radio.begin();
  radio.setChannel(CHANNEL);
  radio.openWritingPipe(address);
  radio.setPALevel(RF24_PA_MIN); }

void loop() {
  sensors.requestTemperatures();
  float outdoorTemp = sensors.getTempCByIndex(0);
  Serial.print("Outdoor:");
  Serial.print(outdoorTemp);
  Serial.print("℃");
  radio.write(&outdoorTemp, sizeof(outdoorTemp));
  delay(1000); }

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