T555/flashInterface/spiFlash.c

#include "spiFlash.h"
#include <stdint.h>
#include "nwy_spi.h"

#define Xm25_JedecDeviceID 0x9f
#define Xm25_SectorEarse 0x20
#define Xm25_ReadData 0x03
#define Xm25_WriteEnable 0x06
#define Xm25_PageProgram 0x02
#define Xm25_ReadStatusReg 0x05

#define PAGE_RW_SIZE 256

static int spiFlashFp=SPI_EC_ERROR;

/*外部SPI FLASH初始化*/
bool spiFlashInit(void){
	int fp=SPI_EC_ERROR;
	if(SPI_EC_ERROR!=spiFlashFp) return true;
	fp=nwy_spi_init(NAME_SPI_BUS_1, SPI_MODE_0, 8000000, 8);
	if(fp==SPI_EC_ERROR) return false;
	spiFlashFp=fp;
	return true;
}

/*释放SPI FLASH接口*/
void spiFlashDeInit(void){
	if(spiFlashFp==SPI_EC_ERROR) return;
	nwy_spi_deinit(spiFlashFp);
	spiFlashFp=SPI_EC_ERROR;
}

/*读取SPI FLASH 设备ID*/
unsigned int spiFlashGetID(void){
	if(spiFlashFp==SPI_EC_ERROR) return 0;
	return nwy_read_flash_id(spiFlashFp, Xm25_JedecDeviceID);
}

/*SPI FLASH sector擦出*/
bool spiFlashSectorErace(unsigned int addr){
	if(spiFlashFp==SPI_EC_ERROR) return false;
	if(addr % SECTOR_SIZE_BYTE) return false;
	nwy_spi_flash_sector_erase(spiFlashFp,Xm25_WriteEnable,Xm25_ReadStatusReg,Xm25_SectorEarse,addr);
	return true;
}

/*SPI FLASH写数据*/
bool spiFlashDataWrite(unsigned int addr, unsigned char *data_ptr, int size){
	int i,len;
	if(spiFlashFp==SPI_EC_ERROR) return false;
	i=size;
	while(i>0){
		if(i>PAGE_RW_SIZE) len=PAGE_RW_SIZE;
		else len=i;
		nwy_spi_flash_write(spiFlashFp, Xm25_WriteEnable,Xm25_ReadStatusReg,Xm25_PageProgram, data_ptr, addr, len);
		i -= len;
	}
	return true;
}
/*SPI FLASH读数据*/
bool spiFlashDataRead(unsigned int addr, unsigned char *rec_ptr, int size){
	int i,len,j;
	if(spiFlashFp==SPI_EC_ERROR) return false;
	i=size;
	j=0;
	while(i>0){
		if(i>PAGE_RW_SIZE) len=PAGE_RW_SIZE;
		else len=i;
		nwy_spi_flash_read(spiFlashFp,Xm25_ReadData, rec_ptr+j, addr, len);
		i -= len;
		j += len;
	}
	return true;
}

#ifdef TEST_SPIFLASH_ON
/*SPI FLASH SECTOR 测试*/
bool spiFlashSectorTest(unsigned short sector, SPIFLASH_INFO *spiFlashInfo){
	unsigned int addr;
	unsigned char Winfo[PAGE_RW_SIZE];
	unsigned char Rinfo[PAGE_RW_SIZE];
	int i,len;
	static unsigned char w=0;
	if(false==spiFlashInit()){
		spiFlashInfo->id=0;
		spiFlashInfo->errno=1;
		return false;
	}
	spiFlashInfo->id=spiFlashGetID();
	addr=sector*SECTOR_SIZE_BYTE;
	if(false==spiFlashSectorErace(addr)){
		spiFlashInfo->errno=2;
		return false;
	}
	for(i=0;i<PAGE_RW_SIZE;i++){
		Winfo[i]=w+i;
		w++;
	}
	i=SECTOR_SIZE_BYTE;
	while(i>0){
		if(i>PAGE_RW_SIZE) len=PAGE_RW_SIZE;
		else len=i;
		if(false==spiFlashDataWrite(addr, Winfo, len)){
			spiFlashInfo->errno=3;
			spiFlashDeInit();
			return false;
		}
		addr += len;
		i -= len;
	}
	addr=sector*SECTOR_SIZE_BYTE;
	i=SECTOR_SIZE_BYTE;
	while(i>0){
		if(i>PAGE_RW_SIZE) len=PAGE_RW_SIZE;
		else len=i;
		memset(Rinfo, 0, PAGE_RW_SIZE);
		if(false==spiFlashDataRead(addr, Rinfo, len)){
			spiFlashInfo->errno=4;
			spiFlashDeInit();
			return false;
		}
		addr += len;
		i -= len;
		if(0!=memcmp(Winfo, Rinfo, len)){
			spiFlashInfo->errno=5;
			spiFlashDeInit();
			return false;
		}
	}
	return true;
}
#endif