📄 systhree.c
字号:
case 0xf7:
keynum = 0x03;
break;
case 0xef:
keynum = 0x04;
break;
case 0xdf:
keynum = 0x05;
break;
case 0xbf:
keynum = 0x06;
break;
case 0x7f:
keynum = 0x07;
break;
}
}
else
{
second_row = 0; //扫描第二行按键
first_row = 1;
M_key = KEY;
switch(M_key)
{
case 0xfe:
keynum = 0x08;
break;
case 0xfd:
keynum = 0x09;
break;
case 0xfb:
keynum = 0x0a;
break;
case 0xf7:
keynum = 0x0b;
break;
case 0xef:
keynum = 0x0c;
break;
case 0xdf:
keynum = 0x0d;
break;
case 0xbf:
keynum = 0x0e;
break;
case 0x7f:
keynum = 0x0f;
break;
}
}
getkey = 1; //获得有效按键数值
keyon = 1; //防止按键冲突，当获得有效按键时将其置1
}
}
}
else
{
first_getkey = 0;
keyon = 0; //防止按键冲突，当所有的按键都释放时将其清0
}
}
/***************************************************
数码管显示函数
原型: void leddisp(void);
功能: 每次调用轮流显示一位数码管
****************************************************/
void leddisp(void)
{
switch(lednum) //选择需要显示的数码位
{
case 0:
LED1 = segtab[led[0]];
break;
case 1:
LED2 = segtab[led[1]];
break;
case 2:
LED3 = segtab[led[2]];
break;
case 3:
LED4 = segtab[led[3]];
break;
case 4:
LED5 = segtab[led[4]];
break;
case 5:
LED6 = segtab[led[5]];
break;
case 6:
LED7 = segtab[led[6]];
break;
case 7:
LED8 = segtab[led[7]];
break;
}
if(lednum == 0) //更新需要现实的数码位
{
lednum = 7;
}
else
{
lednum = lednum-1;
}
}
void lcdlon_off(uchar D)
{
lcdlCommand = D;
_nop_();
}
void setlstartx(uchar D)
{
lcdlCommand = D;
_nop_();
}
void setlstarty(uchar D)
{
lcdlCommand = D;
_nop_();
}
void setlstartline(uchar D)
{
lcdlCommand = D;
_nop_();
}
void lcdron_off(uchar D)
{
lcdrCommand = D;
_nop_();
}
void setrstartx(uchar D)
{
lcdrCommand = D;
_nop_();
}
void setrstarty(uchar D)
{
lcdrCommand = D;
_nop_();
}
void setrstartline(uchar D)
{
lcdrCommand = D;
_nop_();
}
uchar GetIndex(uchar szText)
{
uchar code TAB[libleng] = {' ','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q'
,'R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q'
,'r','s','t','u','v','w','x','y','z','`','1','2','3','4','5','6','7','8','9','0','-','=','\\','~','!','@','#','$','%','^','&','*','(',')','_'
,'+','|','[',']',';','\'',',','.','/','{','}',':','"','<','>','?'};
uchar i;
uchar j = 0;
for(i=0;i<=libleng;i++)
{
if(szText==TAB[i])
{
j = 1;
return i;
break;
}
}
if(j==0)
{
return 0x00;
}
}
void lcdlwrite(uchar D)
{
lcdDl = D;
_nop_();
}
void lcdrwrite(uchar D)
{
lcdDr = D;
_nop_();
}
void writelcd(void) //对LCD进行字符串写入
{
uchar i = 0;//8*8字符数
uchar j = 0;//8位数据中第几位
uchar k = 0;//行数
uchar index = 0;
uchar z = 0;
for(i=0;i<dataleng;i++)
{
index = GetIndex(worddata[i]);
z = i%8;
k = i/16;
if(k>7)
{
k = 0;
}
if(i%16<8)
{
setlstartx(strat_xaddr+k);
for(j=0;j<8;j++)
{
_nop_();
setlstarty(strat_yaddr+8*z+j);
lcdlwrite(ASCII[index][j]);
}
_nop_();
}
if(i%16>=8)
{
setrstartx(strat_xaddr+k);
for(j=0;j<8;j++)
{
_nop_();
setrstarty(strat_yaddr+8*z+j);
lcdrwrite(ASCII[index][j]);
}
_nop_();
}
}
}
/**********************************************************
LCD清屏
原型: void clear_lcd(void);
功能： 将LCD清屏
**********************************************************/
void clear_lcd(void)
{
uchar i,j;
for(i=0;i<8;i++)
{
setlstartx(strat_xaddr + i);
for(j=0;j<64;j++)
{
setlstarty(strat_yaddr+j);
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
lcdlwrite(0x00);
}
_nop_();
}
for(i=0;i<8;i++)
{
setrstartx(strat_xaddr + i);
for(j=0;j<64;j++)
{
setrstarty(strat_yaddr+j);
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
lcdrwrite(0x00);
}
_nop_();
}
}
/**********************************************************
LCD填充
原型: void full_lcd(void);
功能： 将LCD填充
**********************************************************/
void full_lcd(void)
{
uchar i,j;
for(i=0;i<8;i++)
{
setlstartx(strat_xaddr + i);
for(j=0;j<64;j++)
{
setlstarty(strat_yaddr+j);
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
lcdlwrite(0xff);
}
_nop_();
}
for(i=0;i<8;i++)
{
setrstartx(strat_xaddr + i);
for(j=0;j<64;j++)
{
setrstarty(strat_yaddr+j);
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
lcdrwrite(0xff);
}
_nop_();
}
}
/************************************************************************************
LCD初始化
原型: void initial_lcd(void);
功能： 将LCD初始化显示"National University of defence technology's ASIC R&D Center"
************************************************************************************/
void initial_lcd(void)
{
setlstartline(strat_dispaddr);//设置显示初始行
setrstartline(strat_dispaddr);
lcdlon_off(0x3F);//LCD两屏都打开
lcdron_off(0x3F);
writelcd();//写数据
}
/**************************************************************************************
测试RAM函数
函数原型: void check_ram(void);
功能: 向61256的全部存储单元写0x00、0xff并读回，出错单元的数量使用数码管的后五位显示
***************************************************************************************/
void check_ram(void)
{
uint16 ram_count = 0;
uint16 ram_error = 0;
uint8 ram_data1 = 0;
uint8 ram_data2 = 0;
for(ram_count = 0;ram_count < 32768;ram_count++)
{
RAM[ram_count] = 0x00;
ram_data1 = RAM[ram_count];
RAM[ram_count] = 0xff;
ram_data2 = RAM[ram_count];
if((ram_data1 != 0x00) || (ram_data2 != 0xff))
{
ram_error = ram_error + 1;
}
}
if(ram_error != 0)
{
for(ram_data1 = 0;ram_data1 < 5;ram_data1++)
{
if(ram_error != 0)
{
led[ram_data1] = ram_error % 10;
ram_error = ram_error / 10;
}
else
{
led[ram_data1] = 0xff;
}
}
}
else
{
led[0] = 0x00;
led[1] = 0x11;
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