工程代码:
3_fatfs.rar 参考资料:
http://blog.ednchina.com/nthq2004/307859/message.aspx智林STM32开发板上移植FatFs移植
http://blog.ednchina.com/jjldc/190753/message.aspx 九九 FatFs文件系统移植
经过半天的学习,终于将 fatfs 移植到了stm32上,我这次移植的fatfs是最新版本 ff8b在这个网站下载 。
移植过程介绍下:
其中的 diskio.c 是我自己新建的。从 前几个版本 如 ff7c 中复制过来的。 diskio.c 实现的 低级io操作的, 我们移植,也就是针对这个 文件进行修改, 将 sd_spi.h 中实现的sd卡 初始化、 read write 函数功能 在 diskio.c 中实现
- /*-----------------------------------------------------------------------*/
-
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
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/*-----------------------------------------------------------------------*/
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/* This is a stub disk I/O module that acts as front end of the existing */
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/* disk I/O modules and attach it to FatFs module with common interface. */
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/*-----------------------------------------------------------------------*/
-
-
#include "diskio.h"
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#include "..\User\sd_spi.h"
-
-
-
-
/*-----------------------------------------------------------------------*/
-
/* Inidialize a Drive */
-
-
DSTATUS disk_initialize (
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BYTE drv /* Physical drive nmuber (0..) */
-
)
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{
-
u8 state;
-
-
if(drv)
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{
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return STA_NOINIT; //仅支持磁盘0的操作
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}
-
-
state = SD_Init();
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if(state == STA_NODISK)
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{
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return STA_NODISK;
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}
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else if(state != 0)
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{
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return STA_NOINIT; //其他错误:初始化失败
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}
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else
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{
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return 0; //初始化成功
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}
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}
-
-
-
-
/*-----------------------------------------------------------------------*/
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/* Return Disk Status */
-
-
DSTATUS disk_status (
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BYTE drv /* Physical drive nmuber (0..) */
-
)
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{
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if(drv)
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{
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return STA_NOINIT; //仅支持磁盘0操作
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}
-
-
//检查SD卡是否插入
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// if(!SD_DET())
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// {
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// return STA_NODISK;
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// }
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return 0;
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}
-
-
-
-
/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
-
-
DRESULT disk_read (
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BYTE drv, /* Physical drive nmuber (0..) */
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BYTE *buff, /* Data buffer to store read data */
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DWORD sector, /* Sector address (LBA) */
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BYTE count /* Number of sectors to read (1..255) */
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)
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{
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u8 res=0;
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if (drv || !count)
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{
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return RES_PARERR; //仅支持单磁盘操作,count不能等于0,否则返回参数错误
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}
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// if(!SD_DET())
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// {
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// return RES_NOTRDY; //没有检测到SD卡,报NOT READY错误
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// }
-
-
-
-
if(count==1) //1个sector的读操作
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{
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res = SD_ReadSingleBlock(sector, buff);
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}
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else //多个sector的读操作
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{
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res = SD_ReadMultiBlock(sector, buff, count);
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}
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/*
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do
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{
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if(SD_ReadSingleBlock(sector, buff)!=0)
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{
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res = 1;
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break;
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}
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buff+=512;
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}while(--count);
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*/
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//处理返回值,将SPI_SD_driver.c的返回值转成ff.c的返回值
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if(res == 0x00)
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{
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return RES_OK;
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}
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else
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{
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return RES_ERROR;
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}
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}
-
-
-
-
/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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-
#if _READONLY == 0
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DRESULT disk_write (
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BYTE drv, /* Physical drive nmuber (0..) */
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Sector address (LBA) */
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BYTE count /* Number of sectors to write (1..255) */
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)
-
{
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u8 res;
-
-
if (drv || !count)
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{
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return RES_PARERR; //仅支持单磁盘操作,count不能等于0,否则返回参数错误
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}
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// if(!SD_DET())
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// {
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// return RES_NOTRDY; //没有检测到SD卡,报NOT READY错误
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// }
-
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// 读写操作
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if(count == 1)
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{
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res = SD_WriteSingleBlock(sector, buff);
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}
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else
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{
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res = SD_WriteMultiBlock(sector, buff, count);
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}
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// 返回值转换
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if(res == 0)
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{
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return RES_OK;
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}
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else
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{
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return RES_ERROR;
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}
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}
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#endif /* _READONLY */
-
-
-
-
/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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-
DRESULT disk_ioctl (
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BYTE drv, /* Physical drive nmuber (0..) */
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BYTE ctrl, /* Control code */
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void *buff /* Buffer to send/receive control data */
-
)
-
{
-
DRESULT res;
-
-
-
if (drv)
-
{
-
return RES_PARERR; //仅支持单磁盘操作,否则返回参数错误
-
}
-
-
//FATFS目前版本仅需处理CTRL_SYNC,GET_SECTOR_COUNT,GET_BLOCK_SIZ三个命令
-
switch(ctrl)
-
{
-
case CTRL_SYNC:
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SD_CS_ENABLE();
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if(SD_WaitReady()==0)
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{
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res = RES_OK;
-
}
-
else
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{
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res = RES_ERROR;
-
}
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SD_CS_DISABLE();
-
break;
-
-
case GET_BLOCK_SIZE:
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*(WORD*)buff = 512;
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res = RES_OK;
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break;
-
-
case GET_SECTOR_COUNT:
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*(DWORD*)buff = SD_GetCapacity();
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res = RES_OK;
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break;
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default:
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res = RES_PARERR;
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break;
-
}
-
-
return res;
-
}
-
-
-
/*-----------------------------------------------------------------------*/
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/* User defined function to give a current time to fatfs module */
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/* 31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */
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/* 15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */
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DWORD get_fattime (void)
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{
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// struct tm t;
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// DWORD date;
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// t = Time_GetCalendarTime();
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// t.tm_year -= 1980; //年份改为1980年起
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// t.tm_mon++; //0-11月改为1-12月
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// t.tm_sec /= 2; //将秒数改为0-29
-
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// date = 0;
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// date = (t.tm_year << 25)|(t.tm_mon<<21)|(t.tm_mday<<16)|\
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// (t.tm_hour<<11)|(t.tm_min<<5)|(t.tm_sec);
-
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// return date;
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return 0;
-
}
程序的测试代码: - /*
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* Author : 余威先
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* Date: 2011.6.19
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* 开发板上:PD2 ~ LED2
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* PA8 ~ LED0
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* PA15 ~ KEY1
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* PA13 ~ KEY2
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* 修改Date: 2011.6.30 19:20
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* rcc时钟配置: SYSCLK = 16MHZ
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* AHB = 16MHZ
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* APB1 = 8 MHZ // TIM2 TIM3 TIM4
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* APB2 = 16 MHZ //GPIO A B C D
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* 修改Date:2011.7.3 21:00
-
简单描述:
-
移植 fatfs 成功 ff8b
-
-
*/
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#include "stm32f10x.h"
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#include "rcc.h"
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#include "systick.h"
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#include "led.h"
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#include "delay.h"
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//#include "key.h"
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#include "tim3.h"
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#include "usart1.h"
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#include "lcd.h"
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#include "rtc.h"
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#include "flash.h"
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#include "sd_spi.h"
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#include "..\FATS\ff.h"
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#include "..\FATS\integer.h"
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#include "..\FATS\ffconf.h"
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#include "..\FATS\diskio.h"
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volatile u8 sec = 0; // 全局变量 秒 时 小时
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volatile u8 min = 0;
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volatile u8 hour = 0;
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FATFS fs;
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FRESULT res;
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FIL file;
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u8 send_buffer[512] = {97,6};
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u8 receiv_buffer[512] = {0,0};
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u32 capacity = 0;
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void write_file(void);
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int main(void)
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{
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u16 i = 0;//
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RCC_Configuration(); //系统时钟配置
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delay_init(); // 延时 初始化
-
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// RTC_Configuration(); //RTC系统 配置
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// RTC_NVIC_Configuration(); //RTC中断配置
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// RTC_Init();// RTC 时钟初始化
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SPI1_Configuration(); //SPI1 初始化
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// SD_Init(); //SD卡 初始化
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LCD_Init(); //LCD 彩屏初始化
-
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write_cmd(0x2C); //LCD 写数据命令
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DrawFull_single_colour(0xff, 0xff); //显示 纯白色
-
-
capacity = SD_GetCapacity(); //获取 容量
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LCD_show_number(48,128,capacity); //打印低16位
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LCD_show_number(0,128,capacity>>16); //打印高16位
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LCD_PutString(0,0, "start to write file..");
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write_file();
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#if 0
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for(i = 0; i < 256; i++) //发送数据填充
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send_buffer[i] = i;
-
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for(i = 0; i < 256; i++) //发送数据填充
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send_buffer[i + 256] = i;
-
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SD_WriteSingleBlock(0, send_buffer); //写数据到 块 中
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SD_ReadSingleBlock(0, receiv_buffer); //从 块 中 读数据
-
-
for(i = 0; i < 512; i++) // 显示从块中读取到的数据, 一个字节最大255
-
{
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LCD_show_number(8,32,receiv_buffer[i]);
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delay_s(1);
-
}
-
#endif
-
-
while(1) //无限循环, 中断中 显示 秒时钟
-
{
-
#if 0
-
LCD_show_number_2(40,16,hour);
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LCD_show_number_2(64,16,min);
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LCD_show_number_2(88,16,sec);
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#endif
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}
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return 0;
-
}
-
-
-
void write_file(void)
-
{
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UINT br;
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u16 i;
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s8 data[512];
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for(i=0;i<10;i++)
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{
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data[i] = 'o';
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}
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for(i=10;i<20;i++)
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{
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data[i] = 'p';
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}
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for(i=20;i<30;i++)
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{
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data[i] = 'q';
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}
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data[30]='\n';
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-
res = f_mount(0, &fs);
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if(res != 0)
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LCD_PutString(0,16, "f_mount failed.");
-
else
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LCD_PutString(0,16, "f_mount successed.");
-
-
res = f_open(&file, "test.txt", FA_CREATE_ALWAYS | FA_WRITE);
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if(res != 0)
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LCD_PutString(0,32, "f_open failed.");
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else
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LCD_PutString(0,32, "f_open successed.");
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res = f_write(&file, data, 512, &br);
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if(res != 0)
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LCD_PutString(0,48, "f_write failed.");
-
else
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LCD_PutString(0,48, "f_write successed.");
-
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f_close(&file);
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LCD_PutString(0,64, "f_close successed.");
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}
-
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void RTC_IRQHandler(void) //中断函数
-
{
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if (RTC_GetITStatus(RTC_IT_SEC) != RESET)
-
{
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RTC_ClearITPendingBit(RTC_IT_SEC);//清除 RTC秒中断标志
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sec ++;// 定义的全局变量
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if(sec ==60)
-
{
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sec = 0;
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min ++;
-
if(min == 60)
-
{
-
min = 0;
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hour++;
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if(hour==12)
-
hour = 0;
-
}
-
}
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RTC_WaitForLastTask();//等待就绪
-
}
-
}
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SD卡写入后 的文件
在 winhex 下 显示
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