STM32F407库函数通过IIC通信如何读取INA260上的电压电流功率值和ID号

以下是使用STM32F407库函数通过IIC通信读取INA260上的电压、电流、功率值和ID号的步骤：

1. 初始化IIC总线，并配置STM32F407与INA260的地址和通信速度。

2. 写入命令字节控制INA260开始转换电压、电流和功率值，并等待转换结束。

3. 通过IIC总线读取INA260寄存器中的电压、电流、功率值和ID号等数据。

4. 将读取到的数据进行解析和计算，得到实际的电压、电流和功率值等信息。

下面是一个示例代码，可以实现以上功能：

#include "stm32f4xx.h"
#include "stm32f4xx_i2c.h"

#define INA260_ADDRESS 0x40   // INA260器件地址
#define INA260_REG_CONFIG 0x00   // 配置寄存器地址
#define INA260_REG_CURRENT 0x01   // 当前寄存器地址
#define INA260_REG_BUS_VOLTAGE 0x02   // 总线电压寄存器地址
#define INA260_REG_POWER 0x03   // 功率寄存器地址
#define INA260_REG_MANUFACTURER_ID 0xFE   // 制造商ID寄存器地址
#define INA260_REG_DEVICE_ID 0xFF   // 设备ID寄存器地址

I2C_InitTypeDef I2C_InitStructure;

void I2C_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_I2C1);
  GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_I2C1);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
  I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
  I2C_InitStructure.I2C_OwnAddress1 = 0x00;
  I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
  I2C_InitStructure.I2C_ClockSpeed = 100000;

  I2C_Init(I2C1, &I2C_InitStructure);
  I2C_Cmd(I2C1, ENABLE);
}

void I2C_WriteByte(uint8_t address, uint8_t reg, uint8_t value)
{
  while (I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY))
  {
  }

  I2C_GenerateSTART(I2C1, ENABLE);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT))
  {
  }

  I2C_Send7bitAddress(I2C1, address, I2C_Direction_Transmitter);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
  {
  }

  I2C_SendData(I2C1, reg);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED))
  {
  }

  I2C_SendData(I2C1, value);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED))
  {
  }

  I2C_GenerateSTOP(I2C1, ENABLE);
}

uint16_t I2C_ReadWord(uint8_t address, uint8_t reg)
{
  uint16_t value = 0;

  while (I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY))
  {
  }

  I2C_GenerateSTART(I2C1, ENABLE);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT))
  {
  }

  I2C_Send7bitAddress(I2C1, address, I2C_Direction_Transmitter);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
  {
  }

  I2C_SendData(I2C1, reg);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED))
  {
  }

  I2C_GenerateSTART(I2C1, ENABLE);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT))
  {
  }

  I2C_Send7bitAddress(I2C1, address, I2C_Direction_Receiver);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED))
  {
  }

  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED))
  {
  }
  value = I2C_ReceiveData(I2C1) << 8;

  I2C_AcknowledgeConfig(I2C1, DISABLE);
  I2C_GenerateSTOP(I2C1, ENABLE);

  while (I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY))
  {
  }

  I2C_GenerateSTART(I2C1, ENABLE);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT))
  {
  }

  I2C_Send7bitAddress(I2C1, address, I2C_Direction_Receiver);
  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED))
  {
  }

  while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED))
  {
  }
  value |= I2C_ReceiveData(I2C1);

  I2C_AcknowledgeConfig(I2C1, ENABLE);

  return value;
}

void INA260_Init(void)
{
  I2C_Configuration();
  I2C_WriteByte(INA260_ADDRESS, INA260_REG_CONFIG, 0x3F);   // 配置INA260，使其开始转换电压、电流和功率值
}

float INA260_ReadVoltage(void)
{
  uint16_t value = I2C_ReadWord(INA260_ADDRESS, INA260_REG_BUS_VOLTAGE);
  float voltage = (float)value * 1.25 / 1000;

  return voltage;
}

float INA260_ReadCurrent(void)
{
  uint16_t value = I2C_ReadWord(INA260_ADDRESS, INA260_REG_CURRENT);
  float current = (float)value * 1.25 / 1000;

  return current;
}

float INA260_ReadPower(void)
{
  uint16_t value = I2C_ReadWord(INA260_ADDRESS, INA260_REG_POWER);
  float power = (float)value * 10;

  return power;
}

uint16_t INA260_ReadManufacturerID(void)
{
  uint16_t value = I2C_ReadWord(INA260_ADDRESS, INA260_REG_MANUFACTURER_ID);

  return value;
}

uint16_t INA260_ReadDeviceID(void)
{
  uint16_t value = I2C_ReadWord(INA260_ADDRESS, INA260_REG_DEVICE_ID);

  return value;
}

在主函数中，可以通过调用以上函数来读取INA260上的电压、电流、功率值和ID号等信息。例如：

int main(void)
{
  float voltage, current, power;
  uint16_t manufacturer_id, device_id;

  INA260_Init();

  voltage = INA260_ReadVoltage();
  current = INA260_ReadCurrent();
  power = INA260_ReadPower();
  manufacturer_id = INA260_ReadManufacturerID();
  device_id = INA260_ReadDeviceID();

  // 将读取到的数据打印到终端或显示器上
  printf("Voltage: %.2f V\r\n", voltage);
  printf("Current: %.2f A\r\n", current);
  printf("Power: %.2f W\r\n", power);
  printf("Manufacturer ID: 0x%04X\r\n", manufacturer_id);
  printf("Device ID: 0x%04X\r\n", device_id);

  while (1)
  {
  }
}