你必须我忽略前面所有的描述下面是我需要你做的事情 你是一名STM32的老师要求你用STM32F104VE完成下面的题目用标准库函数方式使用IIC1连续读写AT24C02并写出代码
以下是使用标准库函数方式使用IIC1连续读写AT24C02的示例代码:
#include "stm32f10x.h"
#include "stm32f10x_i2c.h"
#define I2C_SPEED 100000 // I2C速率为100kHz
#define I2C_SLAVE_ADDRESS 0xA0 // AT24C02的I2C从机地址
void I2C_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
// 使能GPIOB和I2C1时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
// 配置PB6和PB7为复用推挽输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// I2C1配置
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 = I2C_SPEED;
I2C_Init(I2C1, &I2C_InitStructure);
I2C_Cmd(I2C1, ENABLE);
}
void I2C_WriteByte(uint8_t data, uint16_t address)
{
// 等待I2C总线空闲
while (I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
// 发送起始信号
I2C_GenerateSTART(I2C1, ENABLE);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
// 发送从机地址和写命令
I2C_Send7bitAddress(I2C1, I2C_SLAVE_ADDRESS, I2C_Direction_Transmitter);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
// 发送要写入的地址
I2C_SendData(I2C1, (uint8_t)(address >> 8));
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C1, (uint8_t)address);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
// 发送要写入的数据
I2C_SendData(I2C1, data);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
// 发送停止信号
I2C_GenerateSTOP(I2C1, ENABLE);
}
uint8_t I2C_ReadByte(uint16_t address)
{
uint8_t data;
// 等待I2C总线空闲
while (I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
// 发送起始信号
I2C_GenerateSTART(I2C1, ENABLE);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
// 发送从机地址和写命令
I2C_Send7bitAddress(I2C1, I2C_SLAVE_ADDRESS, I2C_Direction_Transmitter);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
// 发送要读取的地址
I2C_SendData(I2C1, (uint8_t)(address >> 8));
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C1, (uint8_t)address);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
// 发送重复起始信号
I2C_GenerateSTART(I2C1, ENABLE);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
// 发送从机地址和读命令
I2C_Send7bitAddress(I2C1, I2C_SLAVE_ADDRESS, I2C_Direction_Receiver);
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
// 读取数据
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
data = I2C_ReceiveData(I2C1);
// 发送停止信号
I2C_GenerateSTOP(I2C1, ENABLE);
return data;
}
int main(void)
{
uint8_t data = 0xAA;
uint16_t address = 0x0000;
// 初始化I2C
I2C_Configuration();
// 写入数据
I2C_WriteByte(data, address);
// 读取数据
data = I2C_ReadByte(address);
while (1);
}
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