怎么用STM32读出INA260中的ID号

首先，需要将STM32与INA260连接起来。可以使用I2C总线连接两者，根据INA260的地址和I2C通信协议读取ID号。以下是示例代码：

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

#define INA260_ADDRESS 0x40 // INA260芯片地址

void INA260_ReadID(void)
{
    uint8_t id_high, id_low;

    // 初始化I2C
    I2C_InitTypeDef I2C_InitStructure;
    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);

    // 发送读取ID号的命令
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, INA260_ADDRESS << 1, I2C_Direction_Transmitter);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
    I2C_SendData(I2C1, 0xFE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    I2C_GenerateSTOP(I2C1, ENABLE);

    // 读取ID号
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, INA260_ADDRESS << 1, I2C_Direction_Receiver);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
    id_high = I2C_ReceiveData(I2C1);
    I2C_AcknowledgeConfig(I2C1, DISABLE);
    I2C_GenerateSTOP(I2C1, ENABLE);

    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, INA260_ADDRESS << 1, I2C_Direction_Receiver);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
    id_low = I2C_ReceiveData(I2C1);
    I2C_AcknowledgeConfig(I2C1, ENABLE);
    I2C_GenerateSTOP(I2C1, ENABLE);

    uint16_t id = ((uint16_t)id_high << 8) | id_low;
    printf("INA260 ID: %04X\n", id);
}

需要根据具体的STM32型号和使用的I2C接口进行适当修改。