/***********************************************************
* Function:
* Description:
* Input:
* Input:
* Output:
* Return:
* Others:
***********************************************************/
static void rt_thread_entry_sd_test( void* parameter )
{
FRESULT res;
char tempbuf[64];
rt_sem_take( &sem_dataflash, RT_TICK_PER_SECOND * FLASH_SEM_DELAY );
SPI_Configuration();
res = SD_Init();
if(0 == res)
{
rt_kprintf("\r\n SD CARD INIT OK!");
memset(tempbuf,0,sizeof(tempbuf));
SD_GetCID(tempbuf);
rt_kprintf("\r\n CID=");
printf_hex_data(tempbuf, 16);
SD_GetCSD(tempbuf);
rt_kprintf("\r\n SID=");
printf_hex_data(tempbuf, 16);
rt_kprintf("\r\n SD 容量=%d",SD_GetCapacity());
}
else
{
rt_kprintf("\r\n SD CARD INIT ERR = %d",res);
}
if(0 == f_mount(MMC, &fs))
{
rt_kprintf("\r\n f_mount SD OK!");
}
rt_sem_release(&sem_dataflash);
while( 1 )
{
rt_thread_delay( RT_TICK_PER_SECOND / 20 );
}
}
//获取SD卡的容量（字节）
//返回值:0： 取容量出错
// 其他:SD卡的容量(字节)
u32 SD_GetCapacity(void)
{
u8 csd[16];
u32 Capacity;
u8 r1;
u16 i;
u16 temp;
//取CSD信息，如果期间出错，返回0
if(SD_GetCSD(csd)!=0) return 0;
//如果为SDHC卡，按照下面方式计算
if((csd[0]&0xC0)==0x40)
{
Capacity=((u32)csd[8])<<8;
Capacity+=(u32)csd[9]+1;
Capacity = (Capacity)*1024;//得到扇区数
Capacity*=512;//得到字节数
}
else
{
i = csd[6]&0x03;
i<<=8;
i += csd[7];
i<<=2;
i += ((csd[8]&0xc0)>>6);
//C_SIZE_MULT
r1 = csd[9]&0x03;
r1<<=1;
r1 += ((csd[10]&0x80)>>7);
r1+=2;//BLOCKNR
temp = 1;
while(r1)
{
temp*=2;
r1--;
}
Capacity = ((u32)(i+1))*((u32)temp);
// READ_BL_LEN
i = csd[5]&0x0f;
//BLOCK_LEN
temp = 1;
while(i)
{
temp*=2;
i--;
}
//The final result
Capacity *= (u32)temp;//字节为单位
}
return (u32)Capacity;
}
