stm32f103c8t6 iic24c16

STM32F103C8T6是一种基于ARM Cortex-M3内核的单片机，拥有丰富的外设和高性能的处理能力。它具有诸如GPIO、USART、SPI、I2C等多种通信接口，以及计时器、PWM、ADC等功能模块，适用于各种嵌入式应用场景。

24C16是一种串行EEPROM芯片，容量为16K bits。它采用I2C总线协议进行通信，可以通过I2C接口与STM32F103C8T6进行数据交互。通过I2C总线，STM32F103C8T6可以读取或写入24C16芯片中的数据，实现数据存储和传输的功能。

在连接STM32F103C8T6和24C16时，首先需要将I2C总线的SCL和SDA引脚分别连接到对应的引脚上。然后在STM32F103C8T6的软件代码中配置I2C外设，并设置好通信参数，比如通信速度、设备地址等。接下来，可以使用I2C接口的相应函数读取或写入24C16芯片中的数据。

总之，STM32F103C8T6和24C16是一对常用的嵌入式系统组合，通过I2C总线实现数据交互。通过编程控制STM32F103C8T6与24C16之间的通信，可以实现数据的读取、存储和传输等功能。

相关问题

stm32f103c8t6 硬件iic驱动及at24c02读写

1. 硬件IIC驱动

STM32F103C8T6内置硬件I2C接口（IIC），可以通过配置寄存器来实现IIC通讯。以下是一个简单的硬件IIC驱动程序示例，用于向一个从设备（例如AT24C02 EEPROM）写入和读取一个字节。

首先需要配置I2C的时钟和GPIO引脚，如下所示：

//配置I2C时钟和GPIO引脚
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

GPIO_InitTypeDef GPIO_InitStructure;
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);

然后需要初始化I2C，设置通讯速率、地址等参数：

//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);

接下来就可以使用I2C驱动程序向AT24C02 EEPROM写入和读取数据了。以下是一个简单的示例：

//向AT24C02 EEPROM写入一个字节
void I2C_WriteByte(uint8_t deviceAddr, uint8_t regAddr, uint8_t data)
{
    //发送开始信号
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    //发送设备地址（写模式）
    I2C_Send7bitAddress(I2C1, deviceAddr, I2C_Direction_Transmitter);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

    //发送寄存器地址
    I2C_SendData(I2C1, regAddr);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    //发送数据
    I2C_SendData(I2C1, data);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    //发送停止信号
    I2C_GenerateSTOP(I2C1, ENABLE);
}

//从AT24C02 EEPROM读取一个字节
uint8_t I2C_ReadByte(uint8_t deviceAddr, uint8_t regAddr)
{
    uint8_t data = 0;

    //发送开始信号
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    //发送设备地址（写模式）
    I2C_Send7bitAddress(I2C1, deviceAddr, I2C_Direction_Transmitter);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

    //发送寄存器地址
    I2C_SendData(I2C1, regAddr);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    //发送重复开始信号
    I2C_GenerateSTART(I2C1, ENABLE);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    //发送设备地址（读模式）
    I2C_Send7bitAddress(I2C1, deviceAddr, 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;
}

2. AT24C02读写

AT24C02是一种2Kbit（256字节）I2C EEPROM，可以通过I2C接口进行读写。以下是一个简单的示例，用于向AT24C02写入和读取一个字节。

首先需要定义AT24C02的设备地址和寄存器地址：

#define AT24C02_ADDR 0xA0 //设备地址
#define AT24C02_REG_ADDR 0x00 //寄存器地址

然后可以使用上面的I2C驱动程序来向AT24C02写入和读取数据了。以下是一个简单的示例：

//向AT24C02写入一个字节
void AT24C02_WriteByte(uint8_t data)
{
    I2C_WriteByte(AT24C02_ADDR, AT24C02_REG_ADDR, data);
}

//从AT24C02读取一个字节
uint8_t AT24C02_ReadByte(void)
{
    return I2C_ReadByte(AT24C02_ADDR, AT24C02_REG_ADDR);
}

stm32f103c8t6 模拟iIC驱动at24c02 和模拟spi 驱动的w25q64代码

以下是stm32f103c8t6模拟iIC驱动at24c02和模拟spi驱动的w25q64的代码示例：

模拟iIC驱动at24c02代码：

#include "stm32f10x.h"

#define ADDR_AT24C02 0xA0

void I2C1_GPIO_Config(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

    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);

    GPIO_PinRemapConfig(GPIO_Remap_I2C1, ENABLE);
}

void I2C1_Mode_Config(void)
{
    I2C_InitTypeDef I2C_InitStructure;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

    I2C_DeInit(I2C1);

    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);
}

uint8_t I2C1_WriteByte(uint8_t dev_addr, uint8_t reg_addr, uint8_t data)
{
    I2C_GenerateSTART(I2C1, ENABLE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    I2C_Send7bitAddress(I2C1, dev_addr, I2C_Direction_Transmitter);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

    I2C_SendData(I2C1, reg_addr);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    I2C_SendData(I2C1, data);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    I2C_GenerateSTOP(I2C1, ENABLE);

    return 0;
}

uint8_t I2C1_ReadByte(uint8_t dev_addr, uint8_t reg_addr)
{
    uint8_t data;

    I2C_GenerateSTART(I2C1, ENABLE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    I2C_Send7bitAddress(I2C1, dev_addr, I2C_Direction_Transmitter);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

    I2C_SendData(I2C1, reg_addr);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    I2C_GenerateSTART(I2C1, ENABLE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

    I2C_Send7bitAddress(I2C1, dev_addr, I2C_Direction_Receiver);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

    I2C_AcknowledgeConfig(I2C1, DISABLE);
    I2C_GenerateSTOP(I2C1, ENABLE);
    while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED));
    data = I2C_ReceiveData(I2C1);

    return data;
}

void AT24C02_Write(uint8_t addr, uint8_t data)
{
    I2C1_WriteByte(ADDR_AT24C02, addr, data);
}

uint8_t AT24C02_Read(uint8_t addr)
{
    return I2C1_ReadByte(ADDR_AT24C02, addr);
}

int main()
{
    I2C1_GPIO_Config();
    I2C1_Mode_Config();

    uint8_t data = 0x55;

    AT24C02_Write(0x00, data);
    data = AT24C02_Read(0x00);

    while (1);
}

模拟spi驱动的w25q64代码：

#include "stm32f10x.h"
#include "spi.h"
#include "w25q64.h"

void W25Q64_Init(void)
{
    SPI2_Init();

    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    GPIO_SetBits(GPIOB, GPIO_Pin_12);
}

uint8_t W25Q64_ReadSR1(void)
{
    uint8_t cmd = W25Q64_CMD_READ_SR1;
    uint8_t sr1;

    GPIO_ResetBits(GPIOB, GPIO_Pin_12);
    SPI2_WriteByte(cmd);
    sr1 = SPI2_ReadByte();
    GPIO_SetBits(GPIOB, GPIO_Pin_12);

    return sr1;
}

void W25Q64_WriteEnable(void)
{
    uint8_t cmd = W25Q64_CMD_WRITE_ENABLE;

    GPIO_ResetBits(GPIOB, GPIO_Pin_12);
    SPI2_WriteByte(cmd);
    GPIO_SetBits(GPIOB, GPIO_Pin_12);
}

void W25Q64_EraseChip(void)
{
    uint8_t cmd = W25Q64_CMD_ERASE_CHIP;

    W25Q64_WriteEnable();

    GPIO_ResetBits(GPIOB, GPIO_Pin_12);
    SPI2_WriteByte(cmd);
    GPIO_SetBits(GPIOB, GPIO_Pin_12);

    while (W25Q64_ReadSR1() & 0x01);
}

void W25Q64_WritePage(uint32_t addr, uint8_t *data, uint16_t len)
{
    uint8_t cmd[4];
    uint32_t i;

    cmd[0] = W25Q64_CMD_PAGE_PROGRAM;
    cmd[1] = (addr >> 16) & 0xFF;
    cmd[2] = (addr >> 8) & 0xFF;
    cmd[3] = addr & 0xFF;

    W25Q64_WriteEnable();

    GPIO_ResetBits(GPIOB, GPIO_Pin_12);
    for (i = 0; i < 4; i++) {
        SPI2_WriteByte(cmd[i]);
    }
    for (i = 0; i < len; i++) {
        SPI2_WriteByte(data[i]);
    }
    GPIO_SetBits(GPIOB, GPIO_Pin_12);

    while (W25Q64_ReadSR1() & 0x01);
}

void W25Q64_ReadData(uint32_t addr, uint8_t *data, uint16_t len)
{
    uint8_t cmd[4];
    uint32_t i;

    cmd[0] = W25Q64_CMD_READ_DATA;
    cmd[1] = (addr >> 16) & 0xFF;
    cmd[2] = (addr >> 8) & 0xFF;
    cmd[3] = addr & 0xFF;

    GPIO_ResetBits(GPIOB, GPIO_Pin_12);
    for (i = 0; i < 4; i++) {
        SPI2_WriteByte(cmd[i]);
    }
    for (i = 0; i < len; i++) {
        data[i] = SPI2_ReadByte();
    }
    GPIO_SetBits(GPIOB, GPIO_Pin_12);
}

int main()
{
    W25Q64_Init();

    uint8_t data[256];
    uint32_t i;

    for (i = 0; i < 256; i++) {
        data[i] = i;
    }

    W25Q64_EraseChip();

    for (i = 0; i < 65536; i += 256) {
        W25Q64_WritePage(i, data, 256);
    }

    for (i = 0; i < 65536; i += 256) {
        W25Q64_ReadData(i, data, 256);
        /* do something with data */
    }

    while (1);
}