📄 flash.c
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/*flash.c*/
#include "flash.h"
#include "struct.h"
extern SYSTEMTIME CurrentTime;
//#include "rs485.h"
//extern box[3];
//extern wendu;
//extern box[3]; //定义3个探测箱数据结构
//extern struct wendu box;
/**********************************************************************************
*SPI初始化
***********************************************************************************/
void spi_init(void)
{
TRISC0=0; //nCS 输出
TRISC3=0; //SCK 输出
TRISC4=1; //SI 输入
TRISC5=0; //SO 输出
}
void Delay(void)
{
asm("nop");
asm("nop");
}
/**********************************************************************************
*向SPI写数据
*从SPI读数据
*数据一写入SSPBUF就开始发送，同时
***********************************************************************************/
/*
unsigned char OutPut(unsigned char SendData)
{
unsigned char temp;
SSPBUF=SendData;
asm("nop");
asm("nop");
while(BF==0)
{
asm("clrwdt");
}
SSPIF=0;
temp=SSPBUF;
return temp;
}
*/
void OutPut(unsigned char data)
{
unsigned char i;
for(i=0;i<8;i++)
{
SPI_SCK=0;
SPI_SDO=0;
if(data&0x80) SPI_SDO=1; //先发高位
data<<=1;
SPI_SCK=1; //上升沿发数据
asm("nop");
}
SPI_SDO=0;
}
unsigned char InPut(void)
{
unsigned char i;
unsigned char temp=0,readData=0;
for(i=0;i<8;i++)
{
SPI_SCK=0;
asm("nop");
temp=SPI_SDI;
//下降沿发读数
SPI_SCK=1;
//temp=temp<<i;
readData<<=1;
readData|=temp;
}
return readData;
}
//*************************************************************************************************
//直接读主存
void read_one_message(unsigned char *RBuff, unsigned int page_counter, unsigned int page_offset)
{
unsigned char i,temp;
SPI_nCS=0;
Delay();
OutPut(0xD2); //读主存
OutPut((unsigned char)(page_counter>>6)); //页地址PA11-PA6
OutPut((unsigned char)((page_counter<<2)|(page_offset>>8))); //页地址PA5-PA0，页内偏移BA9-BA8
OutPut((unsigned char)page_offset);
OutPut(0x00);//无关位
OutPut(0x00);//无关位
OutPut(0x00);//无关位
OutPut(0x00);//无关位
asm("nop");
for(i=0;i<BYTES_PER_MSG;++i) //每条信息8字节
{
temp=InPut(); //*(RBuff+i)=read_memory(page,page_offset++);
//*(RBuff+i)=temp;
RBuff[i]=temp;
}
Delay();
SPI_nCS=1;
}
void read_N_msg(unsigned char *Nbuf, unsigned int page_counter, unsigned int page_offset,unsigned char N)
{
unsigned char i,temp,k;
SPI_nCS=0;
Delay();
OutPut(0xD2); //读主存
OutPut((unsigned char)(page_counter>>6)); //页地址PA11-PA6
OutPut((unsigned char)((page_counter<<2)|(page_offset>>8))); //页地址PA5-PA0，页内偏移BA9-BA8
OutPut((unsigned char)page_offset);
OutPut(0x00);//无关位
OutPut(0x00);//无关位
OutPut(0x00);//无关位
OutPut(0x00);//无关位
asm("nop");
for(k=0;k<N;k++)
{
for(i=0;i<BYTES_PER_MSG;++i) //每条信息8字节
{
temp=InPut(); //*(RBuff+i)=read_memory(page,page_offset++);
//*(RBuff+i)=temp;
//RBuff[i]= temp;
RBuff[k*BYTES_PER_MSG+i]=temp;
}
}
Delay();
SPI_nCS=1;
}
//直接写主存
void write_memory (unsigned char write_CMD,unsigned int page_counter,unsigned int page_offset)
{
OutPut(write_CMD); //直接写主存，0X82选buffer1，0X85选buffer2
OutPut((unsigned char)(page_counter>>6)); //页地址PA11-PA6
OutPut((unsigned char)((page_counter<<2)|(page_offset>>8))); //页地址PA5-PA0，页内偏移BA9-BA8
OutPut((unsigned char)(page_offset));
}
/******************************************************************************************************/
//最早记录16 bits、最新记录的下一条16 bits、循环标记 8 bits、
/******************************************************************************************************/
void read_flash_flag(unsigned char *FlagBuff)
{
// read_one_message(FlagBuff,1007,0);
unsigned char i,temp;
const unsigned int page_counter = 1033;
unsigned int page_offset = 0;
SPI_nCS=0;
Delay();
OutPut(0xD2); //读主存
OutPut((unsigned char)(page_counter>>6)); //页地址PA11-PA6
OutPut((unsigned char)((page_counter<<2)|(page_offset>>8))); //页地址PA5-PA0，页内偏移BA9-BA8
OutPut((unsigned char)page_offset);
OutPut(0x00);//无关位
OutPut(0x00);//无关位
OutPut(0x00);//无关位
OutPut(0x00);//无关位
asm("nop");
for(i=0;i<3;++i) //每条信息8字节
{
temp=InPut(); //*(RBuff+i)=read_memory(page,page_offset++);
//*(RBuff+i)=temp;
FlagBuff[i]=temp;
}
Delay();
SPI_nCS=1;
}
void write_flash_flag(unsigned char *FlagBuff)
{
unsigned char j,temp;
SPI_nCS=0;
Delay();
write_memory (0x82,1033,0); //
for(j=0;j<3/*BYTES_PER_MSG*/;++j) //
{
temp=FlagBuff[j]; //
OutPut(temp);
}
Delay();
SPI_nCS=1;
}
/***************************************************************/
//比较USB txt文件最后一条数据的时间与FLASH中数据的时间，返回最早数据所在的页 或 最后一次复制过的数据的下一个页
/***************************************************************/
unsigned int find_last_copy(unsigned char pbuf[8], unsigned char *flash_flag) //pbuf为USB txt文件中最后一条信息的数据
{
unsigned char RBuff1[8];
// unsigned int i;// /flash中最早的信息
unsigned int page0 ;// //flash中最早的信息
// unsigned char flash_flag[3];
unsigned char CircleFlag;
unsigned int flash_flag_int_new;
unsigned int count_write ;
// read_flash_flag(flash_flag);
CircleFlag = flash_flag[2];
flash_flag_int_new = (unsigned int)flash_flag[0];
flash_flag_int_new <<=8;
flash_flag_int_new|= flash_flag[1];
if(CircleFlag==0x55)
{
page0 = flash_flag_int_new;
count_write = 834;
}
else
{
page0 = 1;
count_write = flash_flag_int_new - page0;
}
// for(i=0; i<833; ++i) //总共834条数据
while( count_write!=0)
{
count_write--;
if(page0 > 834) page0=1;
read_one_message(RBuff1, page0, 0);
if(RBuff1[0]<pbuf[0]) //年 该信息已经拷贝过
{
page0++;
}
else if(RBuff1[0]>pbuf[0]) //该信息未拷贝过, 则全部拷贝，FLASH中的信息全部为新数据
{
return page0;
}
else if(RBuff1[1]<pbuf[1]) //月 该信息已经拷贝过
{
page0++;
}
else if(RBuff1[1]>pbuf[1]) //该信息未拷贝过, 则全部拷贝，FLASH中的信息全部为新数据
{
return page0;
}
else if(RBuff1[2]<pbuf[2]) //日 该信息已经拷贝过
{
page0++;
}
else if(RBuff1[2]>pbuf[2]) //该信息未拷贝过, 则全部拷贝，FLASH中的信息全部为新数据
{
return page0;
}
else if(RBuff1[3]<pbuf[3]) //时 该信息已经拷贝过
{
page0++;
}
else if(RBuff1[3]>pbuf[3]) //该信息未拷贝过, 则全部拷贝，FLASH中的信息全部为新数据
{
return page0;
}
else if(RBuff1[4]<pbuf[4]) //分 该信息已经拷贝过
{
page0++;
}
else if(RBuff1[4]>pbuf[4]) //该信息未拷贝过, 则全部拷贝，FLASH中的信息全部为新数据
{
return page0;
}
else //时间信息完全一致，说明，上次拷贝正好到这个位置，则返回下一页
{
++page0;
if(page0 > 834) page0=1;
return page0;
}
}
return 1000;
}
void write_flash( void )
{
// unsigned int tpage_offset=0;
unsigned char i,j,k,temp;
unsigned char buff[8];
/******************test********************/
unsigned char asc;
/********************************/
unsigned char flash_flag[3];
unsigned int flash_flag_int=0;
read_flash_flag(flash_flag);
/*************test*********************/
ClearLcd();
asc = flash_flag[1]+'0';
GotoXY(1,0);
Print(&asc);
pause_ms(250);
/**************************************/
// flash_flag_int = (((unsigned int)flash_flag[0])<<8)|flash_flag[1];
flash_flag_int = (unsigned int)flash_flag[0];
flash_flag_int <<=8;
flash_flag_int|= flash_flag[1];
asc = flash_flag_int+'0';
GotoXY(1,3);
Print(&asc);
pause_ms(100);
/*******************************************/
SPI_nCS=0;
Delay();
// write_memory (0x82,tpage,0); //tpage 为全局变量
write_memory (0x82,flash_flag_int,0);
for(i=0; i<10/*MSGS_PER_SAMPLE*/; ++i) //采样一次60条数据，10个箱子，6×10x8=480 Bytes
{
//485接受一个终端的数据//一个探测箱的数据
// show_time();
Rs485_master( i );
buff[5]=i; //chest;
for(k=0;k<6;k++)
{
//接收采集终端信息，tbuff随之变化
buff[0]=CurrentTime.Year; //year;
buff[1]=CurrentTime.Month; //month;
buff[2]=CurrentTime.Day; //data;
buff[3]=CurrentTime.Hour; //hour;
buff[4]=CurrentTime.Minute; //miniute;
buff[6]=k; //channel;
buff[7]=REC_BUF[k+i*6]; //tempeture;
//write_one_message(buff, tpage, tpage_offset); //tpage为全局变量
for(j=0;j<BYTES_PER_MSG;++j) //每条信息8字节
{
temp=buff[j]; //
OutPut(temp);
}
}
}
Delay();
SPI_nCS=1; //nCS上升沿将采样一次的信息从AT45DB161B的buffer1一起送入主存的对应page中
/************************************************/
flash_flag_int++;
asc = flash_flag_int+'0';
GotoXY(1,5);
Print(&asc);
pause_ms(100);
if(flash_flag_int>834)
{
flash_flag_int = 1;
flash_flag[2]=0x55;
}
flash_flag[1] = (unsigned char)flash_flag_int;
flash_flag[0] = flash_flag_int>>8; //最新数据页数的下一页页号
asc = flash_flag[1]+'0';
GotoXY(1,7);
Print(&asc);
pause_ms(100);
write_flash_flag(flash_flag);
}
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