arduino iic发送如下共用体 union data { struct bag//结构体名称 { byte bytee; float PID1[3]; float PID2[3]; long PWM_PN; long PWM_Pump; float T1=11.2; float T2; }bag; byte bytes[41]; }; 另一个arduino iic接收请写出两方代码

发送端代码：

#include<Wire.h>

union data {
  struct bag {
    byte bytee;
    float PID1[3];
    float PID2[3];
    long PWM_PN;
    long PWM_Pump;
    float T1;
    float T2;
  }bag;
  byte bytes[41];
};

data myData;

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

void loop() {
  // 更新数据
  myData.bag.PID1[0] = 1.0;
  myData.bag.PID1[1] = 2.0;
  myData.bag.PID1[2] = 3.0;
  myData.bag.PID2[0] = 4.0;
  myData.bag.PID2[1] = 5.0;
  myData.bag.PID2[2] = 6.0;
  myData.bag.PWM_PN = 100;
  myData.bag.PWM_Pump = 200;
  myData.bag.T1 = 11.2;
  myData.bag.T2 = 22.4;
  
  // 发送数据
  Wire.beginTransmission(8);
  Wire.write(myData.bytes, 41);
  Wire.endTransmission();

  delay(100);
}

接收端代码：

#include<Wire.h>

union data {
  struct bag {
    byte bytee;
    float PID1[3];
    float PID2[3];
    long PWM_PN;
    long PWM_Pump;
    float T1;
    float T2;
  }bag;
  byte bytes[41];
};

data myData;

void receiveEvent(int numBytes) {
  int i = 0;
  while(Wire.available() > 0) {
    myData.bytes[i] = Wire.read();
    i++;
  }
}

void setup() {
  Wire.begin(8);
  Wire.onReceive(receiveEvent);
  Serial.begin(9600);
}

void loop() {
  Serial.print("bytee: ");
  Serial.println(myData.bag.bytee);
  Serial.print("PID1: ");
  Serial.print(myData.bag.PID1[0]);
  Serial.print(", ");
  Serial.print(myData.bag.PID1[1]);
  Serial.print(", ");
  Serial.println(myData.bag.PID1[2]);
  Serial.print("PID2: ");
  Serial.print(myData.bag.PID2[0]);
  Serial.print(", ");
  Serial.print(myData.bag.PID2[1]);
  Serial.print(", ");
  Serial.println(myData.bag.PID2[2]);
  Serial.print("PWM_PN: ");
  Serial.println(myData.bag.PWM_PN);
  Serial.print("PWM_Pump: ");
  Serial.println(myData.bag.PWM_Pump);
  Serial.print("T1: ");
  Serial.println(myData.bag.T1);
  Serial.print("T2: ");
  Serial.println(myData.bag.T2);
  
  delay(100);
}