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);
}