/*****************************************************/ //描述：LCD12864的驱动 //作者：小四叶草 //时间：2015/07/16 //描述：显示与按键 //s2 ---------GPIO52 ;s3-----------GPIO54 ; s4 -------GPIO72 ; s5 ----GPIO71; //两种写法：1.消抖；2.状态机 //按键消抖的是时间是20ms /*****************************************************/ #include "DSP2833x_Device.h" // DSP2833x Headerfile Include File #include "DSP2833x_Examples.h" // DSP2833x Examples Include File #define LCD_DATA (*((volatile Uint16 *)0x45EF)) #define E GpioDataRegs.GPBDAT.bit.GPIO61 #define RW GpioDataRegs.GPADAT.bit.GPIO27 #define RS GpioDataRegs.GPBDAT.bit.GPIO60 #define LOW 0 #define HIGH 1 #define CLEAR_SCREEN 0x01 //清屏指令：清屏且AC值为00H #define AC_INIT 0x02 //将AC设置为00H。且游标移到原点位置 #define CURSE_ADD 0x06 //设定游标移到方向及图像整体移动方向（默认游标右移，图像整体不动） #define FUN_MODE 0x30 //工作模式：8位基本指令集 #define DISPLAY_ON 0x0c //显示开,显示游标，且游标位置反白 #define DISPLAY_OFF 0x08 //显示关 #define CURSE_DIR 0x14 //游标向右移动:AC=AC+1 #define SET_CG_AC 0x40 //设置AC，范围为：00H~3FH #define SET_DD_AC 0x80 #define s2 GpioDataRegs.GPBDAT.bit.GPIO54 #define s3 GpioDataRegs.GPBDAT.bit.GPIO55 #define s4 GpioDataRegs.GPBDAT.bit.GPIO56 #define s5 GpioDataRegs.GPBDAT.bit.GPIO57 #define DELAY_MS(A) DELAY_US((long double)A * 1000.0L) #define DELAY_100US(B) DELAY_US((long double)B * 100.0L) void InitXintf(void); void ConfigGpio(void); void InitLcd(void); void Read_Busy(void); void WriteCmd12864(Uint16 cmd); void WriteData12864(Uint16 dat); void DisplayDdram(uchar *hz); void DispBMP(uchar *adress); void CLR_GDRAM(void); void Disp(void); void fanbai(uchar y,uchar x1,uchar x2); void key(void); void xuanze(); void xunhuan(uchar hang); void jiantou(uchar hang); uchar tab1[]="设置参数值"; uchar tab2[]="查询参数值"; uchar tab3[]="查询历史故障"; uchar tab4[]="清除历史故障"; uchar tab5[]="第二级菜单显示"; uchar key2 = 0; uchar key3 = 0; uchar key4 = 0; uchar key5 = 0; uchar keyindex = 0; //初始化的时候是第一行，选择行的索引 uchar keycur = 0; //0,1,2,3 显示屏的当前行 void main(void) { InitSysCtrl(); InitXintf(); InitXintf16Gpio(); DINT; InitPieCtrl(); IER = 0x0000; IFR = 0x0000; ConfigGpio(); InitLcd(); WriteCmd12864(CLEAR_SCREEN); DELAY_US(50); Disp(); WriteCmd12864(0x34); //开启扩展指令 fanbai(0,2,11); WriteCmd12864(0x36); WriteCmd12864(0x30); //返回到基本指令 while(1) { xuanze(); } } void ConfigGpio(void) { EALLOW; //===12864==================================== GpioCtrlRegs.GPBMUX2.bit.GPIO60 = 0; GpioCtrlRegs.GPBDIR.bit.GPIO60 = 1; GpioCtrlRegs.GPBMUX2.bit.GPIO61 = 0; GpioCtrlRegs.GPBDIR.bit.GPIO61 = 1; GpioCtrlRegs.GPAMUX2.bit.GPIO27 = 0; GpioCtrlRegs.GPADIR.bit.GPIO27 = 1; //===12864==================================== //===key==================================== GpioCtrlRegs.GPBMUX2.bit.GPIO54 = 0; //s2 GPIO GpioCtrlRegs.GPBDIR.bit.GPIO54= 0; //input GpioCtrlRegs.GPBMUX2.bit.GPIO55 = 0; //s2 GPIO GpioCtrlRegs.GPBDIR.bit.GPIO55= 0; //input GpioCtrlRegs.GPBMUX2.bit.GPIO56 = 0; //s2 GPIO GpioCtrlRegs.GPBDIR.bit.GPIO56= 0; //input GpioCtrlRegs.GPBMUX2.bit.GPIO57 = 0; //s2 GPIO GpioCtrlRegs.GPBDIR.bit.GPIO57= 0; //input //disable pull-up GpioCtrlRegs.GPAPUD.bit.GPIO0 = 1; GpioCtrlRegs.GPAPUD.bit.GPIO1 = 1; GpioCtrlRegs.GPAPUD.bit.GPIO2 = 1; GpioCtrlRegs.GPAPUD.bit.GPIO3 = 1; //===key==================================== EDIS; } void InitLcd(void) { DELAY_100US(5); WriteCmd12864(FUN_MODE); DELAY_US(5); WriteCmd12864(FUN_MODE); DELAY_US(5); WriteCmd12864(0x0C); DELAY_US(5); WriteCmd12864(CLEAR_SCREEN); DELAY_US(30); WriteCmd12864(AC_INIT); DELAY_US(4); } void Read_Busy() //读忙标志最高位为1，则busy,不能进行读写操作 { RS = LOW; RW = HIGH; E = HIGH; while(LCD_DATA & 0X80); E = LOW; } void WriteCmd12864(Uint16 cmd) { Read_Busy(); RS = LOW; RW = LOW;//写数据 E = HIGH; LCD_DATA = cmd; E = LOW; } void WriteData12864(Uint16 dat) { Read_Busy(); RS = HIGH; RW = LOW;//写数据 E = HIGH; LCD_DATA = dat; E = LOW; } void DisplayDdram(uchar *hz) { while(*hz != '\0') { WriteData12864(*hz);//地址里面的值 hz++; } } //初步显示的画面，选择第一行反白显示 void Disp() { WriteCmd12864(0x81); DisplayDdram(tab1); WriteCmd12864(0x91); DisplayDdram(tab2); WriteCmd12864(0x89); DisplayDdram(tab3); WriteCmd12864(0x99); DisplayDdram(tab4); } //选择某一行反白显示，和某一行的几个数据显示（连续） //y = {0,1,2,3} //x = {0,...15} //修改数据 一行有16个数据 void fanbai(uchar y,uchar x1,uchar x2) { uchar x_adress; uchar i; uchar j; switch(y) { case 0: x_adress = 0x80;break; case 1: x_adress = 0x90;break; case 2: x_adress = 0x88;break; case 3: x_adress = 0x98;break; default: x_adress = 0x80;break; } if(0x80 == x_adress) //显示屏的第一行 { for(i = 0; i < 32; i++) { WriteCmd12864(0x80 + i); //y WriteCmd12864(0x80); //x if(i < 16) { for(j =0;j < 16;j++) { if((j >= x1) & (j <= x2)) { WriteData12864(0xff); } else { WriteData12864(0x00); } } } else //显示屏的第二行 { for(j =0;j < 16;j++) { WriteData12864(0x00); } } } for(i = 0;i < 32; i++)//显示屏的第三四行 { WriteCmd12864(0x80 + i); WriteCmd12864(0x88); for(j = 0;j <16; j++) { WriteData12864(0x00); } } } if(0x90 == x_adress) //第二行 { for(i = 0; i < 32; i++) { WriteCmd12864(0x80 + i); //y WriteCmd12864(0x80); //x if(i < 16)//显示屏第一行 { for(j =0;j < 16;j++) { WriteData12864(0x00); } } else { for(j =0;j < 16;j++) { if((j >= x1) & (j <= x2)) { WriteData12864(0xff); } else { WriteData12864(0x00); } } } } for(i = 0;i < 32; i++) //第三四行 { WriteCmd12864(0x80 + i); WriteCmd12864(0x88); for(j = 0;j <16; j++) { WriteData12864(0x00); } } } if(0x88 == x_adress) //显示屏的第三行 { for(i = 0;i < 32; i++) //显示屏的第一二行 { WriteCmd12864(0x80 + i); WriteCmd12864(0x80); for(j = 0;j <16; j++) { WriteData12864(0x00); } } for(i = 0; i < 32; i++) { WriteCmd12864(0x80 + i); //y WriteCmd12864(0x88); //x if(i < 16) { for(j =0;j < 16;j++) //显示屏第三行 { if((j >= x1) & (j <= x2)) { WriteData12864(0xff); } else { WriteData12864(0x00); } } } else //显示屏第四行 { for(j =0;j < 16;j++) { WriteData12864(0x00); } } } } if(0x98 == x_adress) //显示屏的第三行 { for(i = 0;i < 32; i++) //显示屏的第一二行 { WriteCmd12864(0x80 + i); WriteCmd12864(0x80); for(j = 0;j <16; j++) { WriteData12864(0x00); } } for(i = 0; i < 32; i++) { WriteCmd12864(0x80 + i); //y WriteCmd12864(0x88); //x if(i < 16) { for(j =0;j < 16;j++) //显示屏第三行 { WriteData12864(0x00); } } else //显示屏第四行 { for(j =0;j < 16;j++) { if((j >= x1) & (j <= x2)) { WriteData12864(0xff); } else { WriteData12864(0x00); } } } } } } //按上移下移键，发白显示那一行 //s4 --上移，s5 --下移 void key() { //1.设置对应IO为输入,在ConfigGpio（）里面，已经设置。 if(0 == s4) //检测到被按下 { DELAY_US(1000); //延时10MS,前消抖 if(0 == s4) { while(!s4); //确认被按下，等下释放 key5 ++; } } if(0 == s5) //检测到被按下 { DELAY_US(1000); //延时10MS,前消抖 if(0 == s5) { while(!s5); //确认被按下，等下释放 key5 ++; } } } void xuanze() { static int16 key_yidong = 0; static k = 0; if(0 == s4) //上移，检测到被按下 { DELAY_US(1000); //延时10MS,前消抖 if(0 == s4) { while(!s4); //确认被按下，等下释放 key_yidong --; if(-1 == key_yidong) { key_yidong = 3; k++; } xunhuan(key_yidong); } } if(0 == s5) //检测到被按下 { DELAY_US(1000); //延时10MS,前消抖 if(0 == s5) { while(!s5); //确认被按下，等下释放 key_yidong ++; if(4 == key_yidong) { key_yidong = 0; } xunhuan(key_yidong); } } } void xunhuan(uchar hang) { switch(hang) { case 0: WriteCmd12864(0x34); //开启扩展指令 fanbai(0,2,11); WriteCmd12864(0x36); WriteCmd12864(0x30); //返回到基本指令 jiantou(0); break; case 1: WriteCmd12864(0x34); //开启扩展指令 fanbai(1,2,11); WriteCmd12864(0x36); WriteCmd12864(0x30); //返回到基本指令 WriteCmd12864(0x90); WriteData12864(0x10); jiantou(1); break; case 2: WriteCmd12864(0x34); //开启扩展指令 fanbai(2,2,13); WriteCmd12864(0x36); WriteCmd12864(0x30); //返回到基本指令 jiantou(2); break; case 3: WriteCmd12864(0x34); //开启扩展指令 fanbai(3,2,13); WriteCmd12864(0x36); WriteCmd12864(0x30); //返回到基本指令 jiantou(3); break; default: WriteCmd12864(0x34); //开启扩展指令 fanbai(0,2,13); WriteCmd12864(0x36); WriteCmd12864(0x30); //返回到基本指令 jiantou(0); break; } } void jiantou(uchar hang) { switch(hang) { case 0: WriteCmd12864(0x80); WriteData12864(0x10); WriteCmd12864(0x90); WriteData12864(0x20); WriteCmd12864(0x88); WriteData12864(0x20); WriteCmd12864(0x98); WriteData12864(0x20); break; case 1: WriteCmd12864(0x80); WriteData12864(0x20); WriteCmd12864(0x90); WriteData12864(0x10); WriteCmd12864(0x88); WriteData12864(0x20); WriteCmd12864(0x98); WriteData12864(0x20); break; case 2: WriteCmd12864(0x80); WriteData12864(0x20); WriteCmd12864(0x90); WriteData12864(0x20); WriteCmd12864(0x88); WriteData12864(0x10); WriteCmd12864(0x98); WriteData12864(0x20); break; case 3: WriteCmd12864(0x80); WriteData12864(0x20); WriteCmd12864(0x90); WriteData12864(0x20); WriteCmd12864(0x88); WriteData12864(0x20); WriteCmd12864(0x98); WriteData12864(0x10); break; default: WriteCmd12864(0x80); WriteData12864(0x10); WriteCmd12864(0x90); WriteData12864(0x20); WriteCmd12864(0x88); WriteData12864(0x20); WriteCmd12864(0x98); WriteData12864(0x20); break; } } 有问题，请咨询，个人公众号。
