LCD.rar_LCD

#include <c8051f310.h> #include <intrins.h> #include "Lcd.h" sbit Lcd_EN=P2^2; sbit Lcd_RW=P2^1; sbit Lcd_RS=P2^0; sbit Busy=P1^7; sbit Led1=P2^7; sbit Led2=P2^6; sbit Led3=P2^5; sbit Key1=P0^1; sbit Key2=P0^0; sbit Key3=P3^1; sbit Key4=P3^2; sbit Key5=P3^3; unsigned char Key_Value=0; unsigned char Need_to_Send=0; unsigned char Present_State=0; unsigned int Time_Out_Count=0; unsigned int Recv_Out_Times=0; unsigned int Recv_Time_Out=0; unsigned int Work_Time_Out=0; unsigned char Buf_Temp; unsigned char Uart_Coun=0; unsigned char Uart_Flag=0; unsigned char delay_num=0; //unsigned char x,y; unsigned char serial_rx_buff[8]; unsigned char serial_tx_buff[8]; unsigned char LED_Count; unsigned char Uart_Enable=0; unsigned char Key_Enable=1; //unsigned char KEY[2][3]={1,2,3,4,5,6}; void INIT_SYS_CLK(void) { OSCXCN = 0x67; //启动外部振荡器用 24 MHz 晶体 设置外部振荡器控制寄存器 while (!(OSCXCN & 0x80)); // 等待晶体稳定 CLKSEL = 0x01; //设置CLKSL0为1，选择外部振荡 设置时钟选择寄存器 OSCICN = 0x08; //选择外部振荡器作为系统时钟源 //使能丢失时钟检测器　 　　　　　　　　　 } void WDT_Init(void) { PCA0MD&= ~0x40; //禁止WDT PCA0MD= 0x00; } void SendString (unsigned char *str, unsigned char strlen) { unsigned char m = 0; do { SBUF0 = *(str + m); while(!TI0); TI0 = 0; m ++; } while (m < strlen); } void Timer0_Init (void) { CKCON|=0x04; TMOD|=0x1; //16Bit TR0 = 0; // 停止定时器0 TH0 = (-SYSCLK/1000) >> 8; // 定时器1ms溢出 TL0 = -SYSCLK/1000; TR0 = 1; // 启动定时器 IE|= 0x2; //定时器0中断允许 } void Timer0_ISR (void) interrupt 1 //1ms { TH0 = (-SYSCLK/1000) >> 8; TL0 = -SYSCLK/1000; delay_num++; Time_Out_Count++; Recv_Time_Out++; if (Recv_Time_Out>=1000) { Recv_Time_Out=0; Recv_Out_Times++; } TF0=0; } void UATR0_ISR(void) interrupt 4 { if(RI0) { RI0 = 0; //Led2=~Led2; Buf_Temp =SBUF0; if (Uart_Coun<8) { serial_rx_buff[Uart_Coun]=Buf_Temp; Uart_Coun++; } if (Uart_Coun >=8) { Uart_Flag=1; Uart_Coun=0; Led2=~Led2; } } } void RS232_Init (void) { SCON0 = 0x10; // SCON0: 8-bit variable bit rate if (SYSCLK/BAUD_RATE/2/256 < 1) { TH1 = -(SYSCLK/BAUD_RATE/2); CKCON &= ~0x0B; // T1M = 1; SCA1:0 = xx CKCON |= 0x08; } else if (SYSCLK/BAUD_RATE/2/256 < 4) { TH1 = -(SYSCLK/BAUD_RATE/2/4); CKCON &= ~0x0B; // T1M = 0; SCA1:0 = 01 CKCON |= 0x09; } else if (SYSCLK/BAUD_RATE/2/256 < 12) { TH1 = -(SYSCLK/BAUD_RATE/2/12); CKCON &= ~0x0B; // T1M = 0; SCA1:0 = 00 } else { TH1 = -(SYSCLK/BAUD_RATE/2/48); CKCON &= ~0x0B; // T1M = 0; SCA1:0 = 10 CKCON |= 0x02; } TL1 = TH1; // init Timer1 TMOD &= ~0xf0; // TMOD: timer 1 in 8-bit autoreload TMOD |= 0x20; TR1 = 1; // START Timer1 ES0 = 1; TI0 = 0; RI0 = 0; } void INIT_PORT (void) { XBR1 = 0x40 ; //XBARE位置1，交叉开关使能。 XBR0 = 0x09 ; //SYSCLK位置1：/SYSCLK连到端口引脚。URT0E置1，1：UART TX0, RX0连到端口引脚P0.4和P0.5。 P0MDIN = 0xf3 ; //端口0输入寄存器配置，p0.2，p0.3接外部晶振，数字输入置1 P0SKIP = 0x0c; //端口0跳过寄存器配置，p0.2，p0.3接外部晶振 P1MDIN = 0xff; P1MDOUT = 0xff; P0MDOUT |= 0x10; P2MDOUT = 0xff ;//设置为推挽输出 } void DetectBusy(void) { P1MDOUT = 0x00; Lcd_EN = 0; Lcd_RS = 0 ; Lcd_RW = 1 ; _nop_(); Lcd_EN = 1; _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); while(Busy==1) ; //Busy为P1.7 delay_num=0; while(delay_num<2) //2ms {;} Lcd_EN = 0; P1MDOUT = 0xff; } void LcdWriteCmd(unsigned char value) { Lcd_RS = 0 ; //写命令为0，写数据为1 Lcd_RW = 0 ; //写为0，读为1 P1 = value ; Lcd_EN = 1; //EN高脉冲 _nop_(); Lcd_EN = 0; } void LcdWriteData(unsigned char value) { Lcd_RS = 1 ; //写命令为0，写数据为1 Lcd_RW = 0 ; //写为0，读为1 P1 = value ; Lcd_EN = 1; //EN高脉冲 _nop_(); Lcd_EN = 0; } void LcdInit(void) { delay_num=0; while(delay_num<15) //15ms {;} /* 写指令0x38连续3次, 不检测忙信号*/ LcdWriteCmd( 0x38 ); //1 delay_num=0; while(delay_num<5) //5ms {;} LcdWriteCmd( 0x38 ); //2 delay_num=0; while(delay_num<5) //5ms {;} LcdWriteCmd( 0x38 ); //3 /* 以后的读写操作均要判断忙信号 */ DetectBusy(); LcdWriteCmd( 0x38 ); /* 先设置关屏 */ DetectBusy(); LcdWriteCmd( 0x08 ); /* 清屏 */ DetectBusy(); LcdWriteCmd( 0x01 ); /* 设置光标显示模式 */ DetectBusy(); LcdWriteCmd( 0x06 ); /* 开屏并显示光标 */ DetectBusy(); LcdWriteCmd( 0x0F ); } void LocateXY(char x , char y) { unsigned char temp; temp = x & 0x0f; y &= 0x01; if ( y ) temp |= 0x40; temp |= 0x80; DetectBusy(); LcdWriteCmd(temp); } void PutChar(char x , char y , char value) { LocateXY(x,y); delay_num=0; while(delay_num<5) {;} DetectBusy(); LcdWriteData(value); } void PutStr(char x , char y , char* str) { unsigned char i,len=0; // 计算字符串长度 while (str[len] >31) len++; //显示字符串 for (i=0;i<len;i++) { PutChar(x++,y,str[i]); if ( x == 16 ) { x = 0; y = 1; } } } void SelectedKeyShow(unsigned char keynum, unsigned char showid) { ; } unsigned char Key_Scan(void) { ; } void main(void) { //**************************************** INIT_PORT(); WDT_Init(); INIT_SYS_CLK(); EA=1; Timer0_Init(); RS232_Init(); LcdInit(); while(1) { Key_Value=Key_Scan(); if (Key_Enable) { if (Key_Value) { Led1=~Led1; Present_State=Key_Value; Key_Value=0; } } if (Uart_Enable) { if (Recv_Out_Times < Work_Time_Out) { ; } else { ; } } } _nop_(); }