Микроконтроллеры

Чего??? Все там реализовано. И работает.

#define	PageErase		0x81
#define	FlashIDMask		0x38
#define	FlashID		0x18
#define	_FlashReady		(1<<7)

#define	WaitFlashReady()	do ; while( (FlashReadStatus() & (_FlashReady | FlashIDMask)) != (_FlashReady | FlashID));

void FlashErasePage (page Page)
{
 FlashSendCommand( Page, 0, PageErase);
 FlashDisable();
 WaitFlashReady();
}

unsigned char FlashReadStatus( void )
{
 FlashEnable();
 WriteSPI(ReadStatus);
 WaitSPIDone();
 WriteSPI(0);			//send dummy data and receive Status
 WaitSPIDone();
 FlashDisable();
 return(ReadSPI());
}

void FlashSendCommand ( page Page, offset Offset, command Command)
{
 unsigned char tmp;
 FlashEnable();
 WriteSPI(Command);
 tmp = (Page << (FlashPageSize/256)) >> 8;
 WaitSPIDone();
 WriteSPI(tmp);
 tmp = (Page << (FlashPageSize/256)) | ((Offset >> 8) & 0x03);
 WaitSPIDone();
 WriteSPI(tmp);
 WaitSPIDone();
 WriteSPI(Offset);
 WaitSPIDone();
 if(Command == MainPageRead)
 {
  WriteSPI(0); WaitSPIDone();
  WriteSPI(0); WaitSPIDone();
  WriteSPI(0); WaitSPIDone();
  WriteSPI(0); WaitSPIDone();
 }else
 if((Command == Buffer1Read)||(Command == Buffer2Read))
 {
  WriteSPI(0); WaitSPIDone();
 }
}