stm32 普通gpio读写FM25CL64 多个数据

首先，你需要将 FM25CL64 连接到 STM32 的 GPIO 引脚上，并配置 STM32 的 GPIO 为输出或输入模式。然后，你需要编写代码来读写 FM25CL64。以下是一个简单的示例代码：

#include "stm32f4xx.h"
#include "fm25cl64.h"

#define FM25CL64_CS_PIN GPIO_Pin_0
#define FM25CL64_CS_PORT GPIOA

void fm25cl64_init()
{
    GPIO_InitTypeDef GPIO_InitStructure;
    
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = FM25CL64_CS_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(FM25CL64_CS_PORT, &GPIO_InitStructure);
}

void fm25cl64_write(uint16_t addr, uint8_t *data, uint16_t len)
{
    GPIO_ResetBits(FM25CL64_CS_PORT, FM25CL64_CS_PIN);

    // 发送写入命令
    SPI_SendData(SPI1, FM25CL64_WRITE_CMD);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SPI1);

    // 发送地址
    SPI_SendData(SPI1, addr >> 8);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SPI1);

    SPI_SendData(SPI1, addr & 0xFF);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SPI1);

    // 发送数据
    for (int i = 0; i < len; i++) {
        SPI_SendData(SPI1, data[i]);
        while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
        while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
        SPI_I2S_ReceiveData(SPI1);
    }

    GPIO_SetBits(FM25CL64_CS_PORT, FM25CL64_CS_PIN);
}

void fm25cl64_read(uint16_t addr, uint8_t *data, uint16_t len)
{
    GPIO_ResetBits(FM25CL64_CS_PORT, FM25CL64_CS_PIN);

    // 发送读取命令
    SPI_SendData(SPI1, FM25CL64_READ_CMD);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SPI1);

    // 发送地址
    SPI_SendData(SPI1, addr >> 8);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SPI1);

    SPI_SendData(SPI1, addr & 0xFF);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
    SPI_I2S_ReceiveData(SPI1);

    // 读取数据
    for (int i = 0; i < len; i++) {
        SPI_SendData(SPI1, 0x00);
        while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
        while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
        data[i] = SPI_I2S_ReceiveData(SPI1);
    }

    GPIO_SetBits(FM25CL64_CS_PORT, FM25CL64_CS_PIN);
}

在上面的代码中，`fm25cl64_init()` 函数用于初始化 FM25CL64，将 CS 引脚配置为输出模式，`fm25cl64_write()` 函数用于向 FM25CL64 写入数据，`fm25cl64_read()` 函数用于从 FM25CL64 读取数据。你可以根据自己的需求修改代码。