void LCMInit(void) {
LCM_Data = 0;
WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号 Delay5Ms();
WriteCommandLCM(0x38,0); Delay5Ms();
WriteCommandLCM(0x38,0); Delay5Ms();
WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
WriteCommandLCM(0x08,1); //关闭显示 WriteCommandLCM(0x01,1); //显示清屏
WriteCommandLCM(0x06,1); //显示光标移动设置 WriteCommandLCM(0x0C,1); //显示开及光标设置 }
//===========按指定位置显示一个字符=============
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData) {
Y &= 0x1; X &= 0xF;
//限制X不能大于15，Y不能大于1 // 算出指令码
if(Y) X |= 0x40; //当要显示第二行时地址码+0x40; X |= 0x80; WriteDataLCM(DData); }
//按指定位置显示一串字符
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData) {
unsigned char ListLength;
ListLength = 0;
WriteCommandLCM(X, 0); //这里不检测忙信号，发送地址码
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Y &= 0x1;
X &= 0xF; //限制X不能大于15，Y不能大于1 while (DData[ListLength]>0x20) //若到达字串尾则退出 {
if (X <= 0xF) //X坐标应小于0xF {
DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符 ListLength++; X++;
} }
}
//=============================================
//==============将按键值编码为数值==================== unsigned char coding(unsigned char m) {
unsigned char k;
switch(m) {
case (0x18): k=1;break; case (0x28): k=2;break; case (0x48): k=3;break; case (0x88): k='A';break; case (0x14): k=4;break; case (0x24): k=5;break; case (0x44): k=6;break; case (0x84): k='B';break; case (0x12): k=7;break; case (0x22): k=8;break; case (0x42): k=9;break;
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}
}
case (0x82): k='C';break; case (0x11): k='*';break; case (0x21): k=0;break; case (0x41): k='#';break; case (0x81): k='D';break;
return(k);
//========按键检测并返回按键值======================= unsigned char keynum(void) {
unsigned char row,col,i; P1=0xf0;
if((P1&0xf0)!=0xf0) {
Delay5Ms();
if((P1&0xf0)!=0xf0) {
row=P1^0xf0; //确定行线 i=0;
P1=a[i]; //精确定位 while(i<4) {
if((P1&0xf0)!=0xf0) { } else {
i++;
col=~(P1&0xff); //确定列线
break; //已定位后提前退出
Delay5Ms();
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}
}
}
P1=a[i];
else { }
while((P1&0xf0)!=0xf0); return (row|col);
//行线与列线组合后返回 //无键按下时返回0
return 0;
}
else return 0; }
//============一声提示音，表示有效输入================ void OneAlam(void) { }
//=============二声提示音，表示操作成功================= void TwoAlam(void) {
ALAM=0; Delay5Ms(); ALAM=0; Delay5Ms();
ALAM=1;
ALAM=1; Delay5Ms();
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