CHJ/user/Device/MB85RS16.c

#include "../main/SystemInclude.h"

/* File start *****************************************************************/
#if ENABLE_USE_MB85RS16
/******************************************************************************/

/******************************************************************************/
void FRAMInit(void)
{
   FRAM_WP_OUTPUT();
   FRAM_CS_OUTPUT();
   DisableFRAM();
   DisableFRAMWrite();
}

/******************************************************************************/
void ProtectFRAM(void)
{
   EnableFRAMWrite();
   EnableFRAM();
	
   SPIWriteData(FRAM_WREN);
   SPIWriteData(FRAM_WRSR);
   SPIWriteData(FULL_ARRAY_PROTECTION);
   SPIWriteData(FRAM_WRDI);
	
   DisableFRAM();
   DisableFRAMWrite();
}

/******************************************************************************/
void UnProtectFRAM(void)
{  
   EnableFRAMWrite();
   EnableFRAM();
	
   SPIWriteData(FRAM_WREN);
   SPIWriteData(FRAM_WRSR);
   SPIWriteData(NO_PROTECTION);
   SPIWriteData(FRAM_WREN);
	
   DisableFRAM();   
}

/******************************************************************************/
void WriteByteToFRAM(u16 address, u8 data)
{
   EnableSPI(SPI_MODE3);

   UnProtectFRAM();
   
   EnableFRAM();
   SPIWriteData(FRAM_WRITE);
   SPIWriteData(address>>8);
   SPIWriteData(address);
   SPIWriteData(data);
   DisableFRAM();

   ProtectFRAM();
   DisableSPI();
}

/******************************************************************************/
u8 ReadByteFromFRAM(u16 address)
{
   u8 data;
   
   EnableSPI(SPI_MODE3);
   
   EnableFRAM();   
   SPIWriteData(FRAM_READ);
   SPIWriteData(address>>8);
   SPIWriteData(address);
   data = SPIReadData();
   DisableFRAM();
   
   DisableSPI();
   
   return data;
	return 0;
}

/******************************************************************************/
void WriteMultiByteToFRAM(u16 address, u8 *pointer, u8 length)
{
   u8 I;
     
   EnableSPI(SPI_MODE3);
	 delay_ms(1);
	
   UnProtectFRAM();
      
   EnableFRAM();
   SPIWriteData(FRAM_WRITE);
   SPIWriteData(address>>8);
   SPIWriteData(address);
   for(I=0; I<length; I++) 
   {
      SPIWriteData(*pointer); 
      pointer++;
   }

   DisableFRAM();

   ProtectFRAM();
   DisableSPI();
}

/******************************************************************************/
void ReadMultiByteFromFRAM(u16 address, u8 *pointer, u8 length)
{
   u16 I;
   
   EnableSPI(SPI_MODE3);
	 delay_ms(1);
   
   EnableFRAM();   
   SPIWriteData(FRAM_READ);
   SPIWriteData(address>>8);
   SPIWriteData(address);
   for(I=0; I<length; I++) *(pointer+I) = SPIReadData();
   DisableFRAM();
	
   DisableSPI();
}

/******************************************************************************/
u8 ReadFRAMDeviceID(void)
{
   u8 temp[8];
   
	 //DisableSPI();
   DisableFRAM();
   EnableSPI(SPI_MODE3);
   delay_10us(100);
   EnableFRAM();
   
   SPIWriteData(FRAM_RDID);
   delay_10us(10);
   temp[0] = SPIReadData();
   temp[1] = SPIReadData();
   temp[2] = SPIReadData();
   temp[3] = SPIReadData();
   temp[4] = SPIReadData();
   temp[5] = SPIReadData();
   temp[6] = SPIReadData();
   temp[7] = SPIReadData();
   DisableFRAM();
//  DisableSPI();
   
   if(temp[0] != 0x04) return 1;
   if(temp[1] != 0x7f) return 1;
   return 0;
}

/* File end *****************************************************************/
#endif 
/****************************************************************************/