配置时钟树
配置时钟树时钟频率为72
SPI1外挂SPIflash
其他不用改这里挂的是一个W25Q16
文件分类管理
生成原始代码
加入W25Q16的驱动代码
忘记配片选线了，这里加上
/*Configure GPIO pin : PtPin */
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);W25Q16.c
#include "main.h"
uint8_t SPI2_ReadWriteByte(uint8_t TxData)
{
uint8_t Rxdata;
HAL_SPI_TransmitReceive(&hspi1,&TxData,&Rxdata,1, 1000);
return Rxdata; //返回收到的数据
}
uint16_t W25QXX_TYPE = 0; //默认是W25Q256
/**
* @brief
* @param
* @param
* @retval None
*/
uint8_t W25QXX_Init(void)
{
uint8_t temp;
W25QXX_TYPE = W25QXX_ReadID(); //读取FLASH ID.
switch(W25QXX_TYPE)
{
case W25Q80 :
{
printf("W25Q80 \r\n");
temp = W25Q_OK;
break;
}
case W25Q16 :
{
printf("W25Q16 \r\n");
temp = W25Q_OK;
break;
}
case W25Q32 :
{
printf("W25Q32 \r\n");
temp = W25Q_OK;
break;
}
case W25Q64 :
{
printf("W25Q64 \r\n");
temp = W25Q_OK;
break;
}
case W25Q128 :
{
printf("W25Q128 \r\n");
temp = W25Q_OK;
break;
}
case W25Q256 :
{
printf("W25Q256 \r\n");
temp=W25QXX_Read_SR(3); //读取状态寄存器3，判断地址模式
if((temp&0X01)==0) //如果不是4字节地址模式,则进入4字节地址模式
{
W25QXX_CS_OK; //选中
SPI2_ReadWriteByte(W25X_Enable4ByteAddr);//发送进入4字节地址模式指令
W25QXX_CS_NON; //取消片选
}
temp = W25Q_OK;
break;
}
default:
temp = W25Q_ERROR;
break;
}
return temp;
}
//读取W25QXX的状态寄存器，W25QXX一共有3个状态寄存器
//状态寄存器1：
//BIT7 6 5 4 3 2 1 0
//SPR RV TB BP2 BP1 BP0 WEL BUSY
//SPR:默认0,状态寄存器保护位,配合WP使用
//TB,BP2,BP1,BP0:FLASH区域写保护设置
//WEL:写使能锁定
//BUSY:忙标记位(1,忙;0,空闲)
//默认:0x00
//状态寄存器2：
//BIT7 6 5 4 3 2 1 0
//SUS CMP LB3 LB2 LB1 (R) QE SRP1
//状态寄存器3：
//BIT7 6 5 4 3 2 1 0
//HOLD/RST DRV1 DRV0 (R) (R) WPS ADP ADS
//regno:状态寄存器号，范:1~3
//返回值:状态寄存器值
uint8_t W25QXX_Read_SR(uint8_t regno)
{
uint8_t byte=0,command=0;
switch(regno)
{
case 1:
command=W25X_ReadStatusReg1; //读状态寄存器1指令
break;
case 2:
command=W25X_ReadStatusReg2; //读状态寄存器2指令
break;
case 3:
command=W25X_ReadStatusReg3; //读状态寄存器3指令
break;
default:
command=W25X_ReadStatusReg1;
break;
}
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(command); //发送读取状态寄存器命令
byte=SPI2_ReadWriteByte(0Xff); //读取一个字节
W25QXX_CS_NON; //取消片选
return byte;
}
//写W25QXX状态寄存器
void W25QXX_Write_SR(uint8_t regno,uint8_t sr)
{
uint8_t command=0;
switch(regno)
{
case 1:
command=W25X_WriteStatusReg1; //写状态寄存器1指令
break;
case 2:
command=W25X_WriteStatusReg2; //写状态寄存器2指令
break;
case 3:
command=W25X_WriteStatusReg3; //写状态寄存器3指令
break;
default:
command=W25X_WriteStatusReg1;
break;
}
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(command); //发送写取状态寄存器命令
SPI2_ReadWriteByte(sr); //写入一个字节
W25QXX_CS_NON; //取消片选
}
//W25QXX写使能
//将WEL置位
void W25QXX_Write_Enable(void)
{
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_WriteEnable); //发送写使能
W25QXX_CS_NON; //取消片选
}
//W25QXX写禁止
//将WEL清零
void W25QXX_Write_Disable(void)
{
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_WriteDisable); //发送写禁止指令
W25QXX_CS_NON; //取消片选
}
//读取芯片ID
//返回值如下:
//0XEF13,表示芯片型号为W25Q80
//0XEF14,表示芯片型号为W25Q16
//0XEF15,表示芯片型号为W25Q32
//0XEF16,表示芯片型号为W25Q64
//0XEF17,表示芯片型号为W25Q128
//0XEF18,表示芯片型号为W25Q256
uint16_t W25QXX_ReadID(void)
{
uint16_t Temp = 0;
W25QXX_CS_OK;
SPI2_ReadWriteByte(0x90);//发送读取ID命令
SPI2_ReadWriteByte(0x00);
SPI2_ReadWriteByte(0x00);
SPI2_ReadWriteByte(0x00);
Temp|=SPI2_ReadWriteByte(0xFF)<<8;
Temp|=SPI2_ReadWriteByte(0xFF);
W25QXX_CS_NON;
return Temp;
}
//读取SPI FLASH
//在指定地址开始读取指定长度的数据
//pBuffer:数据存储区
//ReadAddr:开始读取的地址(24bit)
//NumByteToRead:要读取的字节数(最大65535)
void W25QXX_Read(uint8_t* pBuffer,uint32_t ReadAddr,uint16_t NumByteToRead)
{
uint16_t i;
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_ReadData); //发送读取命令
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位
{
SPI2_ReadWriteByte((uint8_t)((ReadAddr)>>24));
}
SPI2_ReadWriteByte((uint8_t)((ReadAddr)>>16)); //发送24bit地址
SPI2_ReadWriteByte((uint8_t)((ReadAddr)>>8));
SPI2_ReadWriteByte((uint8_t)ReadAddr);
for(i=0;i<NumByteToRead;i++)
{
pBuffer[i]=SPI2_ReadWriteByte(0XFF); //循环读数
}
W25QXX_CS_NON;
}
//SPI在一页(0~65535)内写入少于256个字节的数据
//在指定地址开始写入最大256字节的数据
//pBuffer:数据存储区
//WriteAddr:开始写入的地址(24bit)
//NumByteToWrite:要写入的字节数(最大256),该数不应该超过该页的剩余字节数!!!
void W25QXX_Write_Page(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
{
uint16_t i;
W25QXX_Write_Enable(); //SET WEL
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_PageProgram); //发送写页命令
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位
{
SPI2_ReadWriteByte((uint8_t)((WriteAddr)>>24));
}
SPI2_ReadWriteByte((uint8_t)((WriteAddr)>>16)); //发送24bit地址
SPI2_ReadWriteByte((uint8_t)((WriteAddr)>>8));
SPI2_ReadWriteByte((uint8_t)WriteAddr);
for(i=0;i<NumByteToWrite;i++)SPI2_ReadWriteByte(pBuffer[i]);//循环写数
W25QXX_CS_NON; //取消片选
W25QXX_Wait_Busy(); //等待写入结束
}
//无检验写SPI FLASH
//必须确保所写的地址范围内的数据全部为0XFF,否则在非0XFF处写入的数据将失败!
//具有自动换页功能
//在指定地址开始写入指定长度的数据,但是要确保地址不越界!
//pBuffer:数据存储区
//WriteAddr:开始写入的地址(24bit)
//NumByteToWrite:要写入的字节数(最大65535)
//CHECK OK
void W25QXX_Write_NoCheck(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
{
uint16_t pageremain;
pageremain=256-WriteAddr%256; //单页剩余的字节数
if(NumByteToWrite<=pageremain)pageremain=NumByteToWrite;//不大于256个字节
while(1)
{
W25QXX_Write_Page(pBuffer,WriteAddr,pageremain);
if(NumByteToWrite==pageremain)break;//写入结束了
else //NumByteToWrite>pageremain
{
pBuffer+=pageremain;
WriteAddr+=pageremain;
NumByteToWrite-=pageremain; //减去已经写入了的字节数
if(NumByteToWrite>256)pageremain=256; //一次可以写入256个字节
else pageremain=NumByteToWrite; //不够256个字节了
}
};
}
//写SPI FLASH
//在指定地址开始写入指定长度的数据
//该函数带擦除操作!
//pBuffer:数据存储区
//WriteAddr:开始写入的地址(24bit)
//NumByteToWrite:要写入的字节数(最大65535)
uint8_t W25QXX_BUFFER[4096];
void W25QXX_Write(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
{
uint32_t secpos;
uint16_t secoff;
uint16_t secremain;
uint16_t i;
uint8_t * W25QXX_BUF;
W25QXX_BUF=W25QXX_BUFFER;
secpos=WriteAddr/4096;//扇区地址
secoff=WriteAddr%4096;//在扇区内的偏移
secremain=4096-secoff;//扇区剩余空间大小
//printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//测试用
if(NumByteToWrite<=secremain) secremain=NumByteToWrite;//不大于4096个字节
while(1)
{
W25QXX_Read(W25QXX_BUF,secpos*4096,4096);//读出整个扇区的内容
for(i=0;i<secremain;i++)//校验数据
{
if(W25QXX_BUF[secoff+i]!=0XFF)break; //需要擦除
}
if(i<secremain)//需要擦除
{
W25QXX_Erase_Sector(secpos);//擦除这个扇区
for(i=0;i<secremain;i++) //复制
{
W25QXX_BUF[i+secoff]=pBuffer[i];
}
W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096);//写入整个扇区
}else W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain);//写已经擦除了的,直接写入扇区剩余区间.
if(NumByteToWrite==secremain)break;//写入结束了
else//写入未结束
{
secpos++;//扇区地址增1
secoff=0;//偏移位置为0
pBuffer+=secremain; //指针偏移
WriteAddr+=secremain;//写地址偏移
NumByteToWrite-=secremain; //字节数递减
if(NumByteToWrite>4096)secremain=4096; //下一个扇区还是写不完
else secremain=NumByteToWrite; //下一个扇区可以写完了
}
}
}
//擦除整个芯片
//等待时间超长...
void W25QXX_Erase_Chip(void)
{
W25QXX_Write_Enable(); //SET WEL
W25QXX_Wait_Busy();
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_ChipErase); //发送片擦除命令
W25QXX_CS_NON; //取消片选
W25QXX_Wait_Busy(); //等待芯片擦除结束
}
//擦除一个扇区
//Dst_Addr:扇区地址 根据实际容量设置
//擦除一个扇区的最少时间:150ms
void W25QXX_Erase_Sector(uint32_t Dst_Addr)
{
//监视falsh擦除情况,测试用
//printf("fe:%x\r\n",Dst_Addr);
Dst_Addr*=4096;
W25QXX_Write_Enable(); //SET WEL
W25QXX_Wait_Busy();
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_SectorErase); //发送扇区擦除指令
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位
{
SPI2_ReadWriteByte((uint8_t)((Dst_Addr)>>24));
}
SPI2_ReadWriteByte((uint8_t)((Dst_Addr)>>16)); //发送24bit地址
SPI2_ReadWriteByte((uint8_t)((Dst_Addr)>>8));
SPI2_ReadWriteByte((uint8_t)Dst_Addr);
W25QXX_CS_NON; //取消片选
W25QXX_Wait_Busy(); //等待擦除完成
}
//等待空闲
void W25QXX_Wait_Busy(void)
{
while((W25QXX_Read_SR(1)&0x01)==0x01); // 等待BUSY位清空
}
//获取状态 (1,忙;0,空闲)
uint8_t W25QXX_Get_State(void)
{
uint8_t temp;
temp = W25QXX_Read_SR(1);
temp = temp&0x01;
return temp;
}
//进入掉电模式
void W25QXX_PowerDown(void)
{
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_PowerDown); //发送掉电命令
W25QXX_CS_NON; //取消片选
HAL_Delay(3); //等待TPD
}
//唤醒
void W25QXX_WAKEUP(void)
{
W25QXX_CS_OK; //使能器件
SPI2_ReadWriteByte(W25X_ReleasePowerDown); // send W25X_PowerDown command 0xAB
W25QXX_CS_NON; //取消片选
HAL_Delay(3); //等待TRES1
}
w25q16.h
#ifndef __W25QXX_H
#define __W25QXX_H
#include "typedef.h"
#include "sys.h"
#include "spi.h"
//W25X系列/Q系列芯片列表
//W25Q80 ID 0XEF13
//W25Q16 ID 0XEF14
//W25Q32 ID 0XEF15
//W25Q64 ID 0XEF16
//W25Q128 ID 0XEF17
//W25Q256 ID 0XEF18
#define W25Q80 0XEF13
#define W25Q16 0XEF14
#define W25Q32 0XEF15
#define W25Q64 0XEF16
#define W25Q128 0XEF17
#define W25Q256 0XEF18
#define W25Q_OK ((uint8_t)0x00)
#define W25Q_ERROR ((uint8_t)0x01)
//#define W25QXX_CS_NON HAL_GPIO_WritePin(W25QXX_CS_GPIO_Port,W25QXX_CS_Pin,GPIO_PIN_SET)
//#define W25QXX_CS_OK HAL_GPIO_WritePin(W25QXX_CS_GPIO_Port,W25QXX_CS_Pin,GPIO_PIN_RESET)
#define W25QXX_CS_NON PAout(4)=1
#define W25QXX_CS_OK PAout(4)=0
//
//指令表
#define W25X_WriteEnable 0x06
#define W25X_WriteDisable 0x04
#define W25X_ReadStatusReg1 0x05
#define W25X_ReadStatusReg2 0x35
#define W25X_ReadStatusReg3 0x15
#define W25X_WriteStatusReg1 0x01
#define W25X_WriteStatusReg2 0x31
#define W25X_WriteStatusReg3 0x11
#define W25X_ReadData 0x03
#define W25X_FastReadData 0x0B
#define W25X_FastReadDual 0x3B
#define W25X_PageProgram 0x02
#define W25X_BlockErase 0xD8
#define W25X_SectorErase 0x20
#define W25X_ChipErase 0xC7
#define W25X_PowerDown 0xB9
#define W25X_ReleasePowerDown 0xAB
#define W25X_DeviceID 0xAB
#define W25X_ManufactDeviceID 0x90
#define W25X_JedecDeviceID 0x9F
#define W25X_Enable4ByteAddr 0xB7
#define W25X_Exit4ByteAddr 0xE9
extern uint16_t W25QXX_TYPE; //定义W25QXX芯片型号
uint8_t W25QXX_Init(void);
uint16_t W25QXX_ReadID(void); //读取FLASH ID
uint8_t W25QXX_Get_State(void);
uint8_t W25QXX_Read_SR(uint8_t regno); //读取状态寄存器
void W25QXX_4ByteAddr_Enable(void); //使能4字节地址模式
void W25QXX_Write_SR(uint8_t regno,uint8_t sr); //写状态寄存器
void W25QXX_Write_Enable(void); //写使能
void W25QXX_Write_Disable(void); //写保护
void W25QXX_Write_NoCheck(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite);
void W25QXX_Read(uint8_t* pBuffer,uint32_t ReadAddr,uint16_t NumByteToRead); //读取flash
void W25QXX_Write(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite);//写入flash
void W25QXX_Erase_Chip(void); //整片擦除
void W25QXX_Erase_Sector(uint32_t Dst_Addr); //扇区擦除
void W25QXX_Wait_Busy(void); //等待空闲
void W25QXX_PowerDown(void); //进入掉电模式
void W25QXX_WAKEUP(void); //唤醒
#endif
接下载修改fatfs底层驱动代码，很多文章说修改user_diskio.c里的底层read,write,ioctr,status,这里采用直接修改diskio.c对应的函数，因为fatfs就是通过这几个函数进行底层io的,hal库里，不外乎是用这些函数去调用user_diskio.c对应的函数接口。
先看看文件系统的文件架构。
这是hal库生成的，但如果去官网下载，好像有点不大对，应该是hal库对其进行了一定的封装，额但这不管我吊事，我秉承代码能用就行的原则。
接下来修改底层个IO,disk_read,disk_write,disk_initialize,disk_status,disk_ioctl.这个步骤是非常重要的步骤。
DSTATUS disk_status
/**
* @brief Gets Disk Status
* @param pdrv: Physical drive number (0..)
* @retval DSTATUS: Operation status
*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat;
if(W25QXX_Get_State() == W25Q_OK)
{
stat &= ~STA_NOINIT;
}
return stat;
// stat = disk.drv[pdrv]->disk_status(disk.lun[pdrv]);
// return stat;
}DSTATUS disk_initialize
/**
* @brief Initializes a Drive
* @param pdrv: Physical drive number (0..)
* @retval DSTATUS: Operation status
*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat = RES_OK;
stat = W25QXX_Init();
delay_ms(1);
if(!stat) return RES_OK;
else return STA_NOINIT;
// if(disk.is_initialized[pdrv] == 0)
// {
// disk.is_initialized[pdrv] = 1;
// stat = disk.drv[pdrv]->disk_initialize(disk.lun[pdrv]);
// }
return stat;
}DRESULT disk_read
//这里的定义一个扇区大小为512，用于内存管理的
#define SECTOR_SIZE 512
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Sector address in LBA */
UINT count /* Number of sectors to read */
)
{
// DRESULT res;
if( !count )
{
return RES_PARERR; /* count不能等于0，否则返回参数错误*/
}
for(;count>0;count--)
{
W25QXX_Read((uint8_t *)buff, sector*SECTOR_SIZE, SECTOR_SIZE);
sector++;
buff+=SECTOR_SIZE;
}
return RES_OK;
// res = disk.drv[pdrv]->disk_read(disk.lun[pdrv], buff, sector, count);
// return res;
}DRESULT disk_write
#if _USE_WRITE == 1
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Sector address in LBA */
UINT count /* Number of sectors to write */
)
{
// DRESULT res;
if( !count )
{
return RES_PARERR; /* count不能等于0，否则返回参数错误*/
}
for(;count>0;count--)
{
W25QXX_Write((uint8_t *)buff, sector*SECTOR_SIZE, SECTOR_SIZE);
sector++;
buff+=SECTOR_SIZE;
}
return RES_OK;
// res = disk.drv[pdrv]->disk_write(disk.lun[pdrv], buff, sector, count);
// return res;
}DRESULT disk_ioctl
#if _USE_IOCTL == 1
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
switch(cmd)
{
case CTRL_SYNC:
W25QXX_Wait_Busy();
res=RES_OK;
break;
case GET_SECTOR_SIZE:
//扇区大小
*(WORD*)buff = 512;
res = RES_OK;
break;
case GET_BLOCK_SIZE:
//块大小
*(WORD*)buff = 8;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
//W25Q16总的扇区个数,512
*(DWORD*)buff = 512*8;
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
return res;
// res = disk.drv[pdrv]->disk_ioctl(disk.lun[pdrv], cmd, buff);
// return res;
}OK现在文件系统以及搭建好了，先来测试一下结果，前提是放开一些接口。
打开ff.h文件找到文件系统的接口函数，可以看看具体有啥。
但很多函数都被宏给关闭了，接下来我们去打开部分需要的函数。
这些宏都被定义在ffconf.h中。自己按需打开。还一个到这里程序内存已经100多K了内存自己注意一下，我的用的AIR32F103CCT6有256K闪存大小。所以目前还是可以驾驭的。
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2024 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "cmsis_os.h"
#include "fatfs.h"
#include "spi.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
UINT fnum ; /* 文件成功读写数量 */
BYTE ReadBuffer[1024] = {0}; /* 读缓冲区 */
BYTE WriteBuffer[]= "Hello World!\n";
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void MX_FREERTOS_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SPI1_Init();
MX_FATFS_Init();
MX_USART2_UART_Init();
/* USER CODE BEGIN 2 */
printf("****** 先测试 SPI FLASH 文件系统挂载 ******\r\n");
// 在外部SPI Flash挂载文件系统，文件系统挂载时会对SPI设备初始化
retUSER = f_mount(&USERFatFS, "0:", 1);
/*----------------------- 格式化测试 -----------------*/
/* 如果没有文件系统就格式化创建创建文件系统 */
if(retUSER == FR_NO_FILESYSTEM)
{
printf("》FLASH还没有文件系统，即将进行格式化...\r\n");
/* 格式化 */
retUSER = f_mkfs(USERPath, 0, 0);
if(retUSER == FR_OK)
{
printf("》FLASH已成功格式化文件系统。\r\n");
/* 格式化后，先取消挂载 */
retUSER = f_mount(NULL, USERPath, 1);
/* 重新挂载 */
retUSER = f_mount(&USERFatFS, USERPath, 1);
}
else
{
printf("《《格式化失败。》》\r\n");
while(1);
}
}
else if(retUSER != FR_OK)
{
printf("！！外部Flash挂载文件系统失败。(%d)\r\n", retUSER);
printf("！！可能原因：SPI Flash初始化不成功。\r\n");
while(1);
}
else
{
printf("》文件系统挂载成功，可以进行读写测试\r\n");
}
/*------------------- 文件系统测试：读测试 --------------------------*/
printf("****** 即将进行文件读取测试... ******\r\n");
retUSER = f_open(&USERFile, "test.txt",FA_OPEN_EXISTING | FA_READ);
if(retUSER == FR_OK)
{
printf("》打开文件成功。\r\n");
retUSER = f_read(&USERFile, ReadBuffer, sizeof(ReadBuffer), &fnum);
if(retUSER==FR_OK)
{
printf("》文件读取成功,读到字节数据：%d\r\n",fnum);
printf("》读取得的文件数据为：\r\n%s \r\n", ReadBuffer);
}
else
{
printf("！！文件读取失败：(%d)\n",retUSER);
}
}
else
{
printf("！！打开文件失败。\r\n");
}
/* 不再读写，关闭文件 */
f_close(&USERFile);
printf("****** 遍历当前目录 ******\r\n");
FATFS fs; /* Work area (file system object) for logical drive */
FILINFO fno; /* File information structure */
DIR dir; /* Directory object */
FRESULT res;
res = f_opendir(&dir, "/");
if (res != FR_OK) printf("打开目录失败\n"); // 打开失败则退出
for(;;) {
res = f_readdir(&dir, &fno); // 读取目录项
if (res != FR_OK || fno.fname[0] == 0) break; // 读取错误或结束则退出
if (fno.fname[0] == '.') continue; // 跳过隐藏文件
// 输出文件名
printf("%s\n", fno.fname);
// 如果需要，可以检查fno.fsize来获取文件大小，或者使用fno.fattrib来判断是文件还是目录
}
// 关闭目录
f_closedir(&dir);
/* USER CODE END 2 */
/* Call init function for freertos objects (in freertos.c) */
// MX_FREERTOS_Init();
/* Start scheduler */
// osKernelStart();
/* We should never get here as control is now taken by the scheduler */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief Period elapsed callback in non blocking mode
* @note This function is called when TIM1 interrupt took place, inside
* HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
* a global variable "uwTick" used as application time base.
* @param htim : TIM handle
* @retval None
*/
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
/* USER CODE BEGIN Callback 0 */
/* USER CODE END Callback 0 */
if (htim->Instance == TIM1) {
HAL_IncTick();
}
/* USER CODE BEGIN Callback 1 */
/* USER CODE END Callback 1 */
}
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
因为踩坑过，所以我先创建了一个txt文件，就没有加入创建文件的操作了。
