Question

我正在尝试根据两个Arduinos建造我自己的气象站。设置是这样的：在房子的外面，Arduino传输数据。此时连接了两个传感器。温度和湿度。在房子内部，接收器将连接到某种显示器并显示接收的数据。两个Arduinos之间的通信通过RF链接和VirtualWire发生。

到目前为止，我设法读取传感器，传输数据，并在串行监视器中打印接收到的数据。它看起来是正确的：

 22.1,  46.0,

 22.1,  46.0,

 22.1,  46.0,

 22.1,  46.0,

22.1是温度，46.0是湿度。我的问题是我需要一些方法来分离数据，以便在LCD上很好地显示它们。一个例子是将22.1存储在一种数据类型中，将46.0存储在另一种数据类型中。不知道我该怎么做？有什么建议吗？

收件人代码：

#include <VirtualWire.h>

void setup()
{
  Serial.begin(9600);

  //VirtualWire Setup
  vw_setup(2000);
  vw_set_rx_pin(10);
  vw_rx_start();
}

void loop()
{
  uint8_t buflen = VW_MAX_MESSAGE_LEN; //Maximum length of the message
  uint8_t buf[buflen]; // The buffer that holds the message

  if (vw_get_message(buf, &buflen)) 
  {       

    buf[buflen] = '\0';
    Serial.println((char *)buf);

  }
}

发射器代码：

#include <VirtualWire.h>
#include <DHT.h>

//Defining DHT sensor
#define DHTPIN 2 
#define DHTTYPE DHT11  
DHT dht(DHTPIN, DHTTYPE);
float H = 0;

int tempPin = 0;
float calTemp;

char tString[24];
char hString[24];
char msg[27];


void setup()
{
  Serial.begin(9600);

  //VirtualWire setup
  vw_set_tx_pin(12);
  vw_setup(2000);


  dht.begin();
}

void loop() {
  H = dht.readHumidity();
  analogReference(INTERNAL);
  temp(analogRead(tempPin)); //Calculating temperature in celcius
  analogReference(DEFAULT);
  sendData();
  delay(100);
}

void temp(int value) {
  long temperature = 0;
  //Reading the sensor 20 times and calculating the average reading
  int aRead = 0;
  for (int i = 0; i < 20; i++) {
    aRead = aRead+value;
  }
  aRead = aRead / 20;

  //Converting the temperature to celsius
  temperature = ((100*1.1*aRead)/1024)*10;

  // prints a value of 123 as 12.3
  long hele = temperature / 10;
  float deci = (temperature % 10)/10.0;
  calTemp = hele + deci;
}

int sendData (){
  //Converting temperature to a string
  dtostrf(calTemp, 5, 1, tString);
  //Converting humidity to a string
  dtostrf(H, 5, 1,hString);
  //Combining to one string
  sprintf(msg, "%s, %s,", tString, hString);
  Serial.print("message to send: [");
  Serial.print(msg);
  Serial.println("]");
  //Sending the string
  vw_send((uint8_t *)msg, strlen(msg));
  vw_wait_tx();
}

VirtualWire：分离收到的数据

0 个答案: