请使用MicroPython编写ESP32与STM32f103ZET6进行IIC通信，其中STM32使用硬件IIC作为从机使用，ESP32作为主机

ESP32主机代码：

from machine import Pin, I2C
import time

i2c = I2C(scl=Pin(22), sda=Pin(21), freq=100000)
slave_addr = 0x68

while True:
    # 发送数据
    data = bytearray(1)
    data[0] = 0x01
    i2c.writeto(slave_addr, data)
    time.sleep(0.5)

    # 接收数据
    data = i2c.readfrom(slave_addr, 2)
    print("Received data: ", data)
    time.sleep(0.5)

STM32从机代码：

#include "stm32f10x.h"
#include "stm32f10x_i2c.h"

#define I2C_SLAVE_ADDRESS7 0x68
#define I2C_GPIO_RCC RCC_APB2Periph_GPIOB
#define I2C_RCC RCC_APB1Periph_I2C1
#define I2C_GPIO GPIOB
#define I2C_SCL GPIO_Pin_6
#define I2C_SDA GPIO_Pin_7

void I2C_Configuration(void);
void I2C_GPIO_Configuration(void);
void I2C_NVIC_Configuration(void);
void I2C1_EV_IRQHandler(void);
void I2C1_ER_IRQHandler(void);

u8 data[2] = {0};

int main(void)
{
    I2C_Configuration();

    while(1);
}

void I2C_Configuration(void)
{
    I2C_GPIO_Configuration();
    I2C_NVIC_Configuration();

    RCC_APB1PeriphClockCmd(I2C_RCC, ENABLE);

    I2C_InitTypeDef I2C_InitStructure;
    I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
    I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
    I2C_InitStructure.I2C_OwnAddress1 = I2C_SLAVE_ADDRESS7 << 1;
    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_ITConfig(I2C1, I2C_IT_EVT | I2C_IT_ERR, ENABLE);
    I2C_Cmd(I2C1, ENABLE);
}

void I2C_GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(I2C_GPIO_RCC, ENABLE);

    GPIO_InitStructure.GPIO_Pin = I2C_SCL | I2C_SDA;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_Init(I2C_GPIO, &GPIO_InitStructure);
}

void I2C_NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_InitStructure.NVIC_IRQChannel = I2C1_EV_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

    NVIC_Init(&NVIC_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = I2C1_ER_IRQn;

    NVIC_Init(&NVIC_InitStructure);
}

void I2C1_EV_IRQHandler(void)
{
    u8 Event = I2C_GetLastEvent(I2C1);
    switch(Event)
    {
        // 主机发送起始信号
        case I2C_EVENT_MASTER_MODE_SELECT:
            I2C_Send7bitAddress(I2C1, I2C_SLAVE_ADDRESS7 << 1, I2C_Direction_Transmitter);
            break;

        // 主机发送数据
        case I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED:
            I2C_SendData(I2C1, 0x01);
            break;

        // 主机发送停止信号
        case I2C_EVENT_MASTER_BYTE_TRANSMITTED:
            I2C_GenerateSTOP(I2C1, ENABLE);
            break;

        // 主机接收起始信号
        case I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED:
            break;

        // 接收到数据
        case I2C_EVENT_MASTER_BYTE_RECEIVED:
            data[0] = I2C_ReceiveData(I2C1);
            data[1] = I2C_ReceiveData(I2C1);
            break;

        default:
            break;
    }
}

void I2C1_ER_IRQHandler(void)
{
    if(I2C_GetFlagStatus(I2C1, I2C_FLAG_AF))
    {
        I2C_ClearFlag(I2C1, I2C_FLAG_AF);
        I2C_GenerateSTOP(I2C1, ENABLE);
    }
}