//FAT初始化，不含SD的初始化，用之前应先调用sd的初始化
//返回值:0,初始化成功
// 其他,初始化失败
unsigned char FAT_Init(void)//Initialize of FAT need initialize SD first
{
bootsector710 *bs = 0; //定义DBR结构体，包含BPB部分（12~90字节是BPB）
bpb710 *bpb = 0; //定义BPB结构体
partrecord *pr = 0; //定义硬盘信息 结构休 （16字节）
DWORD hidsec=0; //隐藏的扇区数即为DBR在物理扇区的偏移量
long long Capacity;
Capacity =(long long)SD_GetSectorCount()*512; //得到SD容量，单位为字节
if(Capacity<0xff)return 1;
if(SD_ReadDisk(fat_buffer,0,1))return 2; //读物理扇区0。即MBR（其中MBR内的硬盘分区表中有DBR的地址信息），如没有MBR，则为DBR。经测试，我的SD卡是有MBR的
if(fat_buffer[0]!=0XEB&&fat_buffer[0]!=0XE9) //如物理0扇区第一字节不为0XEB或0XE9,则存在MBR，否则不存在
{
//printf("此SD卡的物理扇区0为MBR\n");
pr = (partrecord *)((partsector *)fat_buffer)->psPart;//first partition 第一分区
hidsec=pr->prStartLBA; //隐藏的扇区 即DBR的物理扇区偏移
//printf("此SD卡的DBR的物理扇区为=%d\n",hidsec) ;
}
else
{
hidsec=0; //无MBR，物理扇区0即为DBR
//printf("此SD卡不存在MBR，物理扇区0即为DBR，物理扇区0即为逻辑扇区0.\n");
}
if(SD_ReadDisk(fat_buffer,hidsec,1))return 3;
//printf("DBR物理扇区偏移量：%d \n",hidsec);
bs = (bootsector710 *)fat_buffer;
bpb = (bpb710 *)bs->bsBPB;
if(bpb->bpbFATsecs)//detemine thd FAT type do not support FAT12
{
FAT32_Enable=0; //FAT16
FATsectors = bpb->bpbFATsecs; //FAT表占用的扇区数
FirstDirClust = 2;
}
else
{
FAT32_Enable=1; //FAT32
FATsectors = bpb->bpbBigFATsecs;//FAT占用的扇区数
FirstDirClust = bpb->bpbRootClust;
}
BytesPerSector = bpb->bpbBytesPerSec; //每扇区字节数
SectorsPerClust = (BYTE)bpb->bpbSecPerClust; //每簇扇区数
FirstFATSector = bpb->bpbResSectors+hidsec; //第一个FAT表扇区
RootDirCount = bpb->bpbRootDirEnts; //根目录项数
RootDirSectors = (RootDirCount*32)>>9; //根目录占用的扇区数
FirstDirSector = FirstFATSector+bpb->bpbFATs*FATsectors; //第一个目录扇区
FirstDataSector = FirstDirSector+RootDirSectors; //第一个数据扇区
//printf("每扇区字节数：%d \n",BytesPerSector);
//printf("每簇扇区数：%d \n",SectorsPerClust);
//printf("第一个FAT表扇区：%d \n",FirstFATSector);
//printf("根目录项数：%d \n",RootDirCount);
//printf("根目录占用的扇区数：%d \n",RootDirSectors);
return 0;
}
int main(void)
{
u32 sector_size;
u8 t=0;
SystemInit();
delay_init(72); //延时初始化
NVIC_Configuration();
uart_init(9600);
LED_Init();
KEY_Init();
LCD_Init();
POINT_COLOR=RED;//设置字体为红色
LCD_ShowString(60,50,"Mini STM32");
LCD_ShowString(60,70,"SD Card TEST");
LCD_ShowString(60,90,"ATOM@ALIENTEK");
LCD_ShowString(60,110,"2011/1/1");
while(SD_Initialize()!=0)//检测不到SD卡
{
LCD_ShowString(60,130,"SD Card Failed!");
delay_ms(500);
LCD_ShowString(60,130,"Please Check! ");
delay_ms(500);
LED0=!LED0;//DS0闪烁
}
//检测SD卡成功
LCD_ShowString(60,130,"SD Card Checked OK ");
sector_size=SD_GetSectorCount();
printf(" SD Sector Size:%x\n",sector_size);
LCD_ShowString(60,150,"SD Card Size: Mb");
LCD_ShowNum(164,150,sector_size>>12,4,16);
while(1)
{
if(t==30)//每6s钟执行一次
{
if(SD_ReadDisk(buf,0,1)==0)//读取MBR扇区
{
LCD_ShowString(60,170,"USART1 Sending Data...");
printf("SECTOR 0 DATA:\n");
for(sector_size=0;sector_size<512;sector_size++)printf("%x ",buf[sector_size]);//打印MBR扇区数据
printf("\nDATA ENDED\n");
LCD_ShowString(60,170,"USART1 Send Data Over!");
}
t=0;
}
t++;
delay_ms(200);
LED0=!LED0;
}
}
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
int result;
switch (cmd) {
case CTRL_SYNC:
SD_CS = 0;
if(0 == SD_WaitReady())
{
res = RES_OK;
}
else
{
res = RES_ERROR;
}
SD_CS = 1;
break;
case GET_SECTOR_SIZE:
*(DWORD*)buff = SD_SECTOR_SIZE;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SD_GetSectorCount();
res = RES_OK;
break;
case GET_BLOCK_SIZE:
*(DWORD*)buff = 8;
res = RES_OK;
break;
default:
res = RES_PARERR;
}
return (res);
}
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
if(pdrv==SD_CARD)//SD卡
{
switch(cmd)
{
case CTRL_SYNC:
SD_CS_Clr();
if(SD_WaitReady()==0)res = RES_OK;
else res = RES_ERROR;
SD_CS_Set();
break;
case GET_SECTOR_SIZE:
*(WORD*)buff = 512;
res = RES_OK;
break;
case GET_BLOCK_SIZE:
*(WORD*)buff = 8;
res = RES_OK;
break;
case GET_SECTOR_COUNT:
*(DWORD*)buff = SD_GetSectorCount();
res = RES_OK;
break;
default:
res = RES_PARERR;
break;
}
}else res=RES_ERROR;//其他的不支持
return res;
}
int main(void)
{
u8 offline_cnt=0;
u8 tct=0;
u8 USB_STA;
u8 Divece_STA;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//中断分组设置
delay_init(); //延时函数初始化
uart_init(9600); //串口初始化为9600
LCD_Init(); //初始化液晶
LED_Init(); //LED初始化
KEY_Init(); //按键初始化
POINT_COLOR=RED; //设置字体为红色
LCD_ShowString(60,50,200,16,16,"Mini STM32");
LCD_ShowString(60,70,200,16,16,"USB Card Reader TEST");
LCD_ShowString(60,90,200,16,16,"ATOM@ALIENTEK");
LCD_ShowString(60,110,200,16,16,"2014/3/15");
SPI_Flash_Init();
if(SD_Initialize())LCD_ShowString(60,130,200,16,16,"SD Card Error!"); //检测SD卡错误
else //SD 卡正常
{
LCD_ShowString(60,130,200,16,16,"SD Card Size: MB");
Mass_Memory_Size[0]=(long long)SD_GetSectorCount()*512;//得到SD卡容量（字节），当SD卡容量超过4G的时候,需要用到两个u32来表示
Mass_Block_Size[0] =512;//因为我们在Init里面设置了SD卡的操作字节为512个,所以这里一定是512个字节.
Mass_Block_Count[0]=Mass_Memory_Size[0]/Mass_Block_Size[0];
LCD_ShowNum(164,130,Mass_Memory_Size[0]>>20,5,16); //显示SD卡容量
}
if(SPI_FLASH_TYPE!=W25Q64)LCD_ShowString(60,130,200,16,16,"W25Q64 Error!"); //检测SD卡错误
else //SPI FLASH 正常
{
Mass_Memory_Size[1]=4916*1024;//前4.8M字节
Mass_Block_Size[1] =512;//因为我们在Init里面设置了SD卡的操作字节为512个,所以这里一定是512个字节.
Mass_Block_Count[1]=Mass_Memory_Size[1]/Mass_Block_Size[1];
LCD_ShowString(60,150,200,16,16,"SPI FLASH Size:4916KB");
}
delay_ms(1800);
USB_Port_Set(0); //USB先断开
delay_ms(300);
USB_Port_Set(1); //USB再次连接
LCD_ShowString(60,170,200,16,16,"USB Connecting...");//提示SD卡已经准备了
Data_Buffer=mymalloc(BULK_MAX_PACKET_SIZE*2*4); //为USB数据缓存区申请内存
Bulk_Data_Buff=mymalloc(BULK_MAX_PACKET_SIZE); //申请内存
//USB配置
USB_Interrupts_Config();
Set_USBClock();
USB_Init();
delay_ms(1800);
while(1)
{
delay_ms(1);
if(USB_STA!=USB_STATUS_REG)//状态改变了
{
LCD_Fill(60,190,240,190+16,WHITE);//清除显示
if(USB_STATUS_REG&0x01)//正在写
{
LCD_ShowString(60,190,200,16,16,"USB Writing...");//提示USB正在写入数据
}
if(USB_STATUS_REG&0x02)//正在读
{
LCD_ShowString(60,190,200,16,16,"USB Reading...");//提示USB正在读出数据
}
if(USB_STATUS_REG&0x04)LCD_ShowString(60,210,200,16,16,"USB Write Err ");//提示写入错误
else LCD_Fill(60,210,240,210+16,WHITE);//清除显示
if(USB_STATUS_REG&0x08)LCD_ShowString(60,230,200,16,16,"USB Read Err ");//提示读出错误
else LCD_Fill(60,230,240,230+16,WHITE);//清除显示
USB_STA=USB_STATUS_REG;//记录最后的状态
}
if(Divece_STA!=bDeviceState)
{
if(bDeviceState==CONFIGURED)LCD_ShowString(60,170,200,16,16,"USB Connected ");//提示USB连接已经建立
else LCD_ShowString(60,170,200,16,16,"USB DisConnected ");//提示USB被拔出了
Divece_STA=bDeviceState;
}
tct++;
if(tct==200)
{
tct=0;
LED0=!LED0;//提示系统在运行
if(USB_STATUS_REG&0x10)
{
offline_cnt=0;//USB连接了,则清除offline计数器
bDeviceState=CONFIGURED;
}else//没有得到轮询
{
offline_cnt++;
if(offline_cnt>10)bDeviceState=UNCONNECTED;//2s内没收到在线标记,代表USB被拔出了
}
USB_STATUS_REG=0;
}
};
}