需要STM32L151 I2C驱动程序，使用V1.3.1库文件

好的，下面是简单的I2C驱动程序，可以参考：

#include "stm32l1xx.h"

/* I2C GPIO Configuration */
#define I2C_SCL_PIN  GPIO_Pin_6
#define I2C_SDA_PIN  GPIO_Pin_7
#define I2C_GPIO     GPIOB
#define I2C_RCC_AHB  RCC_AHBPeriph_GPIOB

/* I2C Configuration */
#define I2C_SPEED    100000
#define I2C_SLAVE_ADDRESS 0xA0

/* Private function prototypes */
static void I2C_GPIO_Configuration(void);
static void I2C_Configuration(void);
static void I2C_Read_Buffer(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead);

int main(void)
{
    uint8_t buffer[10];

    /* GPIO Configuration */
    I2C_GPIO_Configuration();

    /* I2C Configuration */
    I2C_Configuration();

    /* Read data from I2C device */
    I2C_Read_Buffer(buffer, 0x00, 10);

    while(1)
    {
        /* Do something */
    }
}

static void I2C_GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    /* Enable GPIOB clock */
    RCC_AHBPeriphClockCmd(I2C_RCC_AHB, ENABLE);

    /* Configure I2C SCL pin */
    GPIO_InitStructure.GPIO_Pin = I2C_SCL_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(I2C_GPIO, &GPIO_InitStructure);

    /* Configure I2C SDA pin */
    GPIO_InitStructure.GPIO_Pin = I2C_SDA_PIN;
    GPIO_Init(I2C_GPIO, &GPIO_InitStructure);

    /* Connect I2C pins to AF */
    GPIO_PinAFConfig(I2C_GPIO, GPIO_PinSource6, GPIO_AF_I2C1);
    GPIO_PinAFConfig(I2C_GPIO, GPIO_PinSource7, GPIO_AF_I2C1);
}

static void I2C_Configuration(void)
{
    I2C_InitTypeDef I2C_InitStructure;

    /* Enable I2C clock */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

    /* I2C configuration */
    I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
    I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
    I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
    I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
    I2C_InitStructure.I2C_OwnAddress1 = I2C_SLAVE_ADDRESS;
    I2C_InitStructure.I2C_Speed = I2C_SPEED;
    I2C_Init(I2C1, &I2C_InitStructure);

    /* Enable I2C */
    I2C_Cmd(I2C1, ENABLE);
}

static void I2C_Read_Buffer(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
{
    /* While the bus is busy */
    while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));

    /* Send start condition */
    I2C_GenerateSTART(I2C1, ENABLE);

    /* Wait for EV5 */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    /* Send slave address */
    I2C_Send7bitAddress(I2C1, I2C_SLAVE_ADDRESS, I2C_Direction_Transmitter);

    /* Wait for EV6 */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

    /* Send register address */
    I2C_SendData(I2C1, ReadAddr);

    /* Wait for EV8 */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    /* Send start condition again */
    I2C_GenerateSTART(I2C1, ENABLE);

    /* Wait for EV5 */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    /* Send slave address again */
    I2C_Send7bitAddress(I2C1, I2C_SLAVE_ADDRESS, I2C_Direction_Receiver);

    /* Wait for EV6 */
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

    /* Receive data */
    while(NumByteToRead)
    {
        if(NumByteToRead == 1)
        {
            /* Disable ACK */
            I2C_AcknowledgeConfig(I2C1, DISABLE);

            /* Send stop condition */
            I2C_GenerateSTOP(I2C1, ENABLE);
        }

        /* Wait for EV7 */
        while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));

        /* Read data */
        *pBuffer = I2C_ReceiveData(I2C1);

        /* Next byte */
        pBuffer++;
        NumByteToRead--;
    }

    /* Enable ACK */
    I2C_AcknowledgeConfig(I2C1, ENABLE);
}

这是一个简单的I2C读取程序，使用了STM32L1xx标准库，可以读取从机地址为0xA0，寄存器地址为0x00，连续读取10个字节的数据并存储到buffer中。要使用此程序，需要将GPIOB的6、7号引脚配置为I2C模式，然后将I2C1的时钟使能，最后调用I2C_Read_Buffer函数即可。需要注意的是，此程序仅供参考，具体的I2C读写流程和错误处理需要根据具体情况进行调整。