stm32f207如何写32k数据到AT24C64的eeprom

您可以使用I2C总线来与AT24C64 EEPROM进行通信。首先，您需要初始化I2C总线并将其连接到AT24C64。然后，您可以使用STM32F207的内置EEPROM库函数来写入32k数据到AT24C64 EEPROM中。以下是一个可能的代码示例：

#include "stm32f2xx.h"
#include "stm32f2xx_i2c.h"

#define EEPROM_ADDRESS 0xA0 // AT24C64的I2C地址

void init_i2c(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    I2C_InitTypeDef I2C_InitStructure;

    // 初始化I2C总线的GPIO引脚
    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);

    // 将GPIO引脚连接到I2C总线
    GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_I2C1);
    GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_I2C1);

    // 初始化I2C总线
    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 write_eeprom(uint16_t address, uint8_t* data, uint16_t length)
{
    uint16_t i;

    // 发送写入命令和地址
    while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
    I2C_Send7bitAddress(I2C1, EEPROM_ADDRESS, I2C_Direction_Transmitter);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
    I2C_SendData(I2C1, (uint8_t)(address >> 8));
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    I2C_SendData(I2C1, (uint8_t)(address & 0xFF));
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    // 写入数据
    for(i = 0; i < length; i++)
    {
        I2C_SendData(I2C1, data[i]);
        while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    }

    // 发送停止命令
    I2C_GenerateSTOP(I2C1, ENABLE);
}

int main(void)
{
    uint8_t data[32768]; // 32k数据
    uint16_t i;

    // 初始化I2C总线
    init_i2c();

    // 填充数据
    for(i = 0; i < 32768; i++)
    {
        data[i] = i % 256;
    }

    // 写入数据到AT24C64 EEPROM
    write_eeprom(0, data, 32768);

    while(1);

    return 0;
}