RN 8302b电能代码

以下是RN8302B的电能计算代码示例，供您参考：

#include <SPI.h>

// 定义RN8302B SPI接口的引脚
#define RN_CS 10
#define RN_RST 9

// 定义RN8302B寄存器地址
#define RN_DATA 0x01
#define RN_VOLT 0x02
#define RN_CURR 0x03
#define RN_PWR 0x04
#define RN_PF 0x05
#define RN_E 0x06
#define RN_FREQ 0x07

// 初始化RN8302B
void initRN8302B() {
  pinMode(RN_CS, OUTPUT);
  pinMode(RN_RST, OUTPUT);

  // 复位RN8302B
  digitalWrite(RN_RST, LOW);
  delay(100);
  digitalWrite(RN_RST, HIGH);
  delay(100);

  // 配置SPI接口
  SPI.begin();
  SPI.setClockDivider(SPI_CLOCK_DIV16);
  SPI.setBitOrder(MSBFIRST);
  SPI.setDataMode(SPI_MODE0);
}

// 读取RN8302B寄存器的值
int readRN8302B(byte reg) {
  byte dataH, dataL;
  int data;

  // 选中RN8302B
  digitalWrite(RN_CS, LOW);

  // 发送读取命令和寄存器地址
  SPI.transfer(0x01);
  SPI.transfer(reg);

  // 读取寄存器的值
  dataH = SPI.transfer(0x00);
  dataL = SPI.transfer(0x00);

  // 取消选中RN8302B
  digitalWrite(RN_CS, HIGH);

  // 将读取到的数据转换为整型
  data = (dataH << 8) | dataL;

  return data;
}

// 读取电压
float readVoltage() {
  int data = readRN8302B(RN_VOLT);
  float voltage = (float)data / 1000.0;
  return voltage;
}

// 读取电流
float readCurrent() {
  int data = readRN8302B(RN_CURR);
  float current = (float)data / 1000.0;
  return current;
}

// 读取功率
float readPower() {
  int data = readRN8302B(RN_PWR);
  float power = (float)data / 1000.0;
  return power;
}

// 读取功率因数
float readPowerFactor() {
  int data = readRN8302B(RN_PF);
  float pf = (float)data / 1000.0;
  return pf;
}

// 读取电量
float readEnergy() {
  int data = readRN8302B(RN_E);
  float energy = (float)data / 1000.0;
  return energy;
}

// 读取电网频率
float readFrequency() {
  int data = readRN8302B(RN_FREQ);
  float freq = (float)data / 1000.0;
  return freq;
}

void setup() {
  Serial.begin(9600);
  initRN8302B();
}

void loop() {
  float voltage, current, power, pf, energy, freq;

  voltage = readVoltage();
  current = readCurrent();
  power = readPower();
  pf = readPowerFactor();
  energy = readEnergy();
  freq = readFrequency();

  Serial.print("Voltage: ");
  Serial.print(voltage);
  Serial.print(" V, ");

  Serial.print("Current: ");
  Serial.print(current);
  Serial.print(" A, ");

  Serial.print("Power: ");
  Serial.print(power);
  Serial.print(" W, ");

  Serial.print("Power Factor: ");
  Serial.print(pf);
  Serial.print(", ");

  Serial.print("Energy: ");
  Serial.print(energy);
  Serial.print(" kWh, ");

  Serial.print("Frequency: ");
  Serial.print(freq);
  Serial.println(" Hz");

  delay(1000);
}

注意：以上代码仅是示例，实际使用时需要根据具体应用场景进行修改和优化。同时，请务必参考RN8302B的数据手册和相关资料，确保正确使用和配置芯片。