main.c

来自「单片机LCD驱动」· C语言 代码 · 共 335 行

#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_();
}