sd54.c

USB开发板 。CH375的与AVR （atmega32）。。。。

//if(keynum==0x08) ds1302_text();
}
void up()
{
if(mood!=T&&mood!=B)
{
if(lcdadd!=0)lcdadd--;
else lcdadd=3;
cursor();
}
}
void down()
{
if(mood!=T&&mood!=B)
{if(lcdadd!=3)lcdadd++;
else lcdadd=0;
cursor();
}
}
void esc()
{
lcd_write(lcdcmd,0x30,0);//基本指令
lcd_write(lcdcmd,0x01,0);//清屏，地址指针指向00H
lcd_write(lcdcmd,0x80,0);
add_of_bootnum=16;
bootnum=0;
strat_c=0;
FAT_c=0;
lcdnum=0;//初始状态
file_buffer();
lcd_file();//bootnum--;
mood=file;
}
void right()
{
if(mood!=T&&mood!=B)
{
lcdadd=0;
file_buffer();
lcd_file();//bootnum++;
}
}
void enter()
{
lcd_write(lcdcmd,0x80,0);
if(file_t==T)read_txt();
if(file_t==B)read_bmp();
if(file_t==file)read_file();
}
void tmp()
{
GICR&=~0x40;//关int0
tmpct=60;
tmp_lcd();
do{find_tmp();}while(tmpfind==0);
nop;
tmpfind=0;
tmp175num=0;
write_time_buffer();
nop;
do{
TCCR1B = 0x04; //开定时器1
SREG|=0x80;//全局中断
if(tmp175_able==1)
{
tmp175();
write_buffer();
tmp_lcd_ct();
tmp175_able=0;
}
}while(tmp175num!=60);
nop;
tmpcadd=(tmpc[0]<<24)+(tmpc[1]<<16)+(tmpc[2]<<8)+tmpc[3];
tmpadd=(tmpcadd/*起始簇*/-2)*sector_per_cluster/*每簇扇区数0x0d*/+add_of_boot/*根目录扇区址*/;
sdcmd(24,tmpadd,0);//写根目录扇区址
writesd();
nop;
tmp_lcd_ok();
nop;
//mood=file;
GICR|=0x40;//开int0
tmpct=60;
}
void read_file()
{
mood=file;
add_of_bootnum=16;
bootnum=4;
FAT_c=strat_c-2;//初始状态
file_buffer();
lcd_file();
while(PINA==0xf0);	
}
void read_txt()
{
mood=T;
uchar i=0,j=0;
//uint32_t txtadd;
txtadd=(strat_c/*起始簇*/-2)*sector_per_cluster/*每簇扇区数0x0d*/+add_of_boot/*根目录扇区址*/;
sdcmd(18,txtadd+txtcnum,0);//读块
readsd();//数据读取
lcd_write(lcdcmd,0x30,0);//基本指令
lcd_write(lcdcmd,0x01,0);//清屏，地址指针指向00H
for (j=0;j<4;)
{
lcd_write(lcdcmd,lcd_add[j],0);//设置起始地址
    for(i=0;i<16;i++)
	{
	if(buffer[lcdnum]==0) break;
	else
	lcd_write(lcddate,buffer[lcdnum],word);
	lcdnum++;
	}
j++;
}
txtnum++;
if(txtnum==8)
{
txtnum=0;
lcdnum=0;
txtcnum++;
}
if(txtcnum==4)
{
txtcnum=0;
txtnum=0;
lcdnum=0;
FAT_c=strat_c-2;
read_FAT();
strat_c=FAT_c+2;
}
while(PINA==0xf0);
}
void read_bmp()
{
mood=B;
uchar i=0,j=0;
uint32_t bmpadd;
bmpadd=(strat_c/*起始簇*/-2)*sector_per_cluster/*每簇扇区数0x0d*/+add_of_boot/*根目录扇区址*/;
sdcmd(18,bmpadd,0);//读块
readsd();//数据读取
lcdnum=0x3e;
lcd_write(lcdcmd,0x30,0);//基本指令
lcd_write(lcdcmd,0x01,0);//清屏，地址指针指向00H
  for(j=0;j<32;j++)
  {
    for(i=0;i<8;i++)
    {
      lcd_write(lcdcmd,0x34,0);
      lcd_write(lcdcmd,y0-j,0);
      lcd_write(lcdcmd,x2+i,0);
      lcd_write(lcdcmd,0x30,0);
      lcd_write(lcddate,~buffer[lcdnum],pic);
      lcd_write(lcddate,~(buffer[lcdnum+1]),pic);
	  lcdnum=lcdnum+2;
	  if(lcdnum==512)
	  {
	  sdcmd(18,bmpadd+1,0);//读块
      readsd();//数据读取
	  lcdnum=0;
	  }
    }
  }
  for(j=32;j<64;j++)
  {
    for(i=0;i<8;i++)
    {
      lcd_write(lcdcmd,0x34,0);
      lcd_write(lcdcmd,y0+32-j,0);
      lcd_write(lcdcmd,x1+i,0);
      lcd_write(lcdcmd,0x30,0);
      lcd_write(lcddate,~buffer[lcdnum],pic);
      lcd_write(lcddate,~(buffer[lcdnum+1]),pic);
	  lcdnum=lcdnum+2;
	  if(lcdnum==512)
	  {
	  sdcmd(17,bmpadd+2,0);//读块
      readsd();//数据读取
	  lcdnum=0;
	  }
    }
  }
lcd_write(0xf8,0x36,0);
while(PINA==0xf0);
}
void cursor()//光标
{
uchar i=0,j=0;
lcd_write(lcdcmd,0x30,0);//基本指令
for (j=0;j<4;)
{
lcd_write(lcdcmd,lcd_add[j],0);//设置起始地址
    for(i=0;i<2;i++)
	{
	lcd_write(lcddate,0xa1,word);
	}
j++;
}	
lcd_write(lcdcmd,lcd_add[lcdadd],0);
lcd_write(lcddate,0xa1,word);
lcd_write(lcddate,0xef,word);//写箭头
strat_c=strat_cluster[lcdadd];//起始簇
file_t=file_type[lcdadd];//文件类型
}
void ds1302()
{
uchar i=0;
ds1302_lcd0();
ds1302_set();
do{
tmp175();
lcd_write(lcdcmd,0x30,0);//基本指令
lcd_write(lcdcmd,0x85,0);//设置起始地址
    for(i=0;i<6;i++)
	{
	lcd_write(lcddate,tmp0[i],word);
	}
time_lcd();
}
while(PINA==0xf0);
}
/**************************keyboard***********************************************************/
/*********************************************************************************************/
/**************************tmp175*************************************************************/
void tmp_lcd()
{
    uchar i=0,j=0;
    lcd_write(lcdcmd,0x30,0);//基本指令
    lcd_write(lcdcmd,0x01,0);//清屏，地址指针指向00H
    for (j=0;j<4;)
    {
    lcd_write(lcdcmd,lcd_add[j],0);//设置起始地址
    for(i=0;i<16;i++)
	{
	lcd_write(lcddate,tmpset[i+j*16],word);
	}
	j++;
	}
}
void find_tmp()
{
       uchar file1,file2,file3,extension1,extension2,extension3;
       if(add_of_bootnum==16)
	   {
	   add_of_bootnum=0;
	   sdcmd(17,add_of_boot+bootnum,0);//读根目录扇区址
       readsd();
	   bootnum++;
	   }
	   file1=buffer[0+(add_of_bootnum<<5)];
	   file2=buffer[1+(add_of_bootnum<<5)];
	   file3=buffer[2+(add_of_bootnum<<5)];
	   extension1=buffer[8+(add_of_bootnum<<5)];
	   extension2=buffer[9+(add_of_bootnum<<5)];
	   extension3=buffer[10+(add_of_bootnum<<5)];//扩展名
	   if(file1==0x54&&file2==0x4d&&file3==0x50&&extension1==0x54&&extension2==0x58&&extension3==0x54)
	   {
	    tmpc[0]=buffer[21+(add_of_bootnum<<5)];
	    tmpc[1]=buffer[20+(add_of_bootnum<<5)];
	    tmpc[2]=buffer[27+(add_of_bootnum<<5)];//起始簇
	    tmpc[3]=buffer[26+(add_of_bootnum<<5)];//起始簇
		tmpfind=1;
	   }else add_of_bootnum++;
}
void tmp_lcd_ok()
{
uchar i=0;
lcd_write(lcdcmd,0x30,0);//基本指令
lcd_write(lcdcmd,0x98,0);//设置起始地址
    for(i=0;i<16;i++)
	{
	lcd_write(lcddate,tmpok[i],word);
	}
}
void tmp_lcd_ct()
{
uchar i=0;
lcd_write(lcdcmd,0x30,0);//基本指令
tmpct--;
tmpct10=tmpct/10;
tmpct1=tmpct-tmpct10*10;
tmplcdct[9]=0x30+tmpct10;
tmplcdct[10]=0x30+tmpct1;
lcd_write(lcdcmd,0x98,0);//设置起始地址
    for(i=0;i<16;i++)
	{
	lcd_write(lcddate,tmplcdct[i],word);
	}
}
void tmp175()
{
tmp175num++;
i2c_strat();
i2c_sla_w(0x6e);//三脚悬空地址为0110111、写
i2c_wdate(0x01);//选择配置寄存器
i2c_wdate(0x60);//12位精度
i2c_stop();
/*初始设定*/
i2c_strat();
i2c_sla_w(0x6e);//三脚悬空地址为0110111、写
i2c_wdate(0x00);//选择温度寄存器
i2c_restrat();
i2c_sla_r(0x6e);//三脚悬空地址为0110111、读
i2c_rdate();
tmph=TWDR;
next;
i2c_rdate();
tmpl=TWDR;
i2c_stop();
tmpl=point[(tmpl>>4)-1];
tmphh=tmph/10;
tmphl=tmph-tmphh*10;
tmp0[0]=tmphh|0x30;
tmp0[1]=tmphl|0x30;
tmp0[3]=tmpl|0x30;
}
void i2c_strat()
{
TWCR = (1<<TWINT)|(1<<TWSTA)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));//等待 TWINT置位， TWINT置位表示START信号已发出
if ((TWSR & 0xF8) != strat_ack)i2c_strat();
}
void i2c_restrat()
{
TWCR = (1<<TWINT)|(1<<TWSTA)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));//等待 TWINT置位， TWINT置位表示START信号已发出
if ((TWSR & 0xF8) != restrat_ack)i2c_strat();
}
void i2c_sla_w(uchar sla_w)
{
TWDR = sla_w|0x00;
TWCR = (1<<TWINT) | (1<<TWEN);
while (!(TWCR & (1<<TWINT)));//等待 TWINT 置位，TWINT置位表示总线命令 SLA+W 已发出，及收到应答信号
if ((TWSR & 0xF8) != mt_sla_ack)i2c_sla_w(sla_w);
}
void i2c_sla_r(uchar sla_r)
{
TWDR = sla_r|0x01;
TWCR = (1<<TWINT) | (1<<TWEN);
while (!(TWCR & (1<<TWINT)));//等待 TWINT 置位，TWINT置位表示总线命令 SLA+W 已发出，及收到应答信号
if ((TWSR & 0xF8) != mr_sla_ack)i2c_sla_r(sla_r);
}
void i2c_wdate(uchar date)
{
TWDR = date;
TWCR = (1<<TWINT) | (1<<TWEN);
nop;
while (!(TWCR & (1<<TWINT)));//等待 TWINT置位，TWINT置位表示总线数据 DATA 已发送，及收到应答信号 
if ((TWSR & 0xF8) != mt_date_ack)i2c_wdate(date);
}
void i2c_rdate()
{
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
nop;
while (!(TWCR & (1<<TWINT)));//等待 TWINT置位，TWINT置位表示总线数据 DATA 已读取，及收到应答信号 
if ((TWSR & 0xF8) != mr_date_ack)i2c_rdate();
}
void i2c_stop()
{
TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWSTO);
}
void write_time_buffer()
{
uchar i;
for(i=0;i<32;i++)
{
buffer[i]=time_tab[i+32];
}
tmpnum=4;
}
void write_buffer()
{
uchar i;
for(i=0;i<8;i++)
{
buffer[i+(tmpnum<<3)]=tmp0[i];
}
tmpnum++;
}
/**************************tmp175*************************************************************/
/*********************************************************************************************/
/**************************timer1*************************************************************/
SIGNAL(SIG_OVERFLOW1)
{
TCCR1B = 0x00; //stop
if(tmplcd==0){
receive_cmd;
tmplcd=1;}
else 
{ureceive_cmd;
tmplcd=0;}
TCNT1H = 0xA4; //setup
TCNT1L = 0x73;
tmp175_able=1;
}
/**************************timer1*************************************************************/
/*********************************************************************************************/
/**************************ds1302*************************************************************/
void nop_4()
{
asm("nop");
asm("nop");
asm("nop");
asm("nop");
}
void ds1302_set()//1302初始化
{
PORTD&=~0xe0;//三脚置低
DDRD|=0xe0;//输出
write_data(0x8e,0x00);//关闭寄存器写保护
write_data(0x90,0xa5);//写充电寄存器，开R1和一个二极管
}
void write_data(uchar addr,uchar data)
{
uchar i;
ds_enable;
ds_datel;
ds_clkl;         
ds_out;
nop_4();
ds_able;                  //时钟信号低时拉高RST初始化
for(i=0;i<8;i++) 
  { 
  if(addr&(1<<i))  
  		ds_dateh;  
  else 
  	    ds_datel;
  ds_clkh;             //时钟上升沿写入数据
  nop_4();
  ds_clkl;             //时钟拉低电平 
  nop_4();            
  }
  for(i=0;i<8;i++) 
  { 
  if(data&(1<<i))  
  		ds_dateh;  
  else 
  	    ds_datel;
  ds_clkh;             //时钟上升沿写入数据
  nop_4();
  ds_clkl;             //时钟拉低电平 
  nop_4();            
  }
  ds_in;
  ds_enable;             //禁止DS1302 
}
void read_data(uchar addr)
{
uchar i,t;
ds_enable;
ds_datel;
ds_clkl;         
ds_out;
nop_4();
ds_able;                    //时钟信号低时拉高RST初始化
for(i=0;i<8;i++) 
  { 
  if(addr&(1<<i))  
  		ds_dateh;  
  else 
  	    ds_datel;
    ds_clkh;
  nop_4();            //时钟上升沿写入数据
  ds_datel;
    ds_clkl;     
  nop_4();        //时钟拉低电平 
}
   ds_in;
   ds_dateh;
   nop_4();
for(i=0;i<7;i++)
 { 
  if(ds_read)
      t|=(1<<i);
  else
  	  t&=~(1<<i);
	ds_clkh;      
  nop_4();       //上升沿读出数据 
  ds_clkl;       
  nop_4();      //时钟电平拉低 
  }
  ds_clkl; 
  ds_enable;             //禁止DS1302 
  time=t;
}
void do_time(uchar m,uchar n)
{
timel=(time&0x0f)|0x30;
timeh=((time>>4)&0x0f)|0x30;
time_tab[m]=timeh;
time_tab[n]=timel;
}
void time_lcd()
{
read_data(0x8d);
do_time(34,35);
read_data(0x89);
do_time(38,39);
read_data(0x87);
do_time(42,43);
read_data(0x85);
do_time(52,53);
read_data(0x83);
do_time(55,56);
read_data(0x81);
do_time(58,59);
ds1302_lcd();
}
void  ds1302_lcd()
{
    uchar i=0,j=0;
    lcd_write(lcdcmd,0x30,0);//基本指令
    for (j=2;j<4;)
    {
    lcd_write(lcdcmd,lcd_add[j],0);//设置起始地址
    for(i=0;i<16;i++)
	{
	lcd_write(lcddate,time_tab[i+j*16],word);
	}
	j++;
	}
}
void  ds1302_lcd0()
{
uchar i=0,j=0;
    lcd_write(lcdcmd,0x30,0);//基本指令
    for (j=0;j<4;)
    {
    lcd_write(lcdcmd,lcd_add[j],0);//设置起始地址
    for(i=0;i<16;i++)
	{
	lcd_write(lcddate,time_tab[i+j*16],word);
	}
	j++;
	}
}
void ds1302_text()
{
ds1302_set();
time_set(0x08,0x06,0x26,0x15,0x54,0x00);
ds1302();
}
void time_set(uchar year,uchar month,uchar day,uchar hour,uchar min,uchar sec)
{
  write_data(0x80,sec);
  write_data(0x82,min);
  write_data(0x84,hour);
  write_data(0x86,day);
  write_data(0x88,month);
  write_data(0x8c,year);
}
/**************************ds1302*************************************************************/
/*********************************************************************************************/