sdcard.h

加速度采集器。基于ATMega16L.AVRSTUIDIO4

#ifndef SDCARD_H
#define SDCARD_H

#include <iom16v.h>
#include <macros.h>



//===========SPI Function===============
unsigned char SPITransfer(unsigned char data);
#define assertSS() 		PORTB &= ~0x10;
#define deassertSS() 	PORTB |= 0x10;


//==========SD Card Function===============
unsigned char sdSendCommand(unsigned char index, unsigned long argument);
unsigned char sdSendNoDataCommand(unsigned char index, unsigned long argument);
unsigned char sdInitCard();
unsigned char sdReadCSD();
unsigned char sdReadData(unsigned long address);
unsigned char sdWriteData(unsigned long address);

//=========Result=========================
#define SDERR_TIMEOUT	0xff
#define SDERR_DATACRCERROR	0xfe

#endif