//FileName:delay.h
#ifndef __LZP_DELAY_H_
#define __LZP_DELAY_H_
#define TRUE 1
#define FALSE 0
//设置波特率
#define OSC_FREQ 11059200L
#define BAUD_115200 256 - (OSC_FREQ/192L)/115200L // 255
#define BAUD_57600 256 - (OSC_FREQ/192L)/57600L // 254
#define BAUD_38400 256 - (OSC_FREQ/192L)/38400L // 253
#define BAUD_28800 256 - (OSC_FREQ/192L)/28800L // 252
#define BAUD_19200 256 - (OSC_FREQ/192L)/19200L // 250
#define BAUD_14400 256 - (OSC_FREQ/192L)/14400L // 248
#define BAUD_9600 256 - (OSC_FREQ/192L)/9600L // 244
// Timer2
#define RCAP2_50us 65536L - OSC_FREQ/240417L
#define RCAP2_1ms 65536L - OSC_FREQ/12021L
void delay_ms(unsigned int num);
void delay_50us(unsigned char num);
void delay_us(unsigned char num);
#endif
//FileName:delay.c
/********************************************
** start51 study board
** delay function implementation
** author:bluehacker
** QQ:282074921
**********************************************/
#include "delay.h"
#include "reg52.h"
void delay_ms(unsigned int num)
{
RCAP2H = (RCAP2_1ms>>8);
RCAP2L=(RCAP2_1ms&0x00ff);
TH2=(RCAP2_1ms>>8);;
TL2=(RCAP2_1ms&0x00ff);;
ET2 = 0; // Disable timer2 interrupt
T2CON = 0x04; // 16-bit auto-reload, clear TF2, start timer
while (num--)
{
while (!TF2);
TF2 = FALSE;
}
TR2 = FALSE;
}
void delay_50us(unsigned char num)
{
RCAP2H=(RCAP2_50us>>8);
RCAP2L=(RCAP2_50us&0x00ff);
TH2=(RCAP2_50us>>8);
TL2=(RCAP2_50us&0x00ff);
ET2=0;
T2CON=0x04;
while(num--)
{
while(!TF2)
TF2=FALSE;
}
TR2=FALSE;
}
void delay_us(unsigned char num)
{
unsigned char i;
for (i=0;i
{
}
}
//FileName:lcd.h
#ifndef __LZP_LCD_H_
#define __LZP_LCD_H_
#include "reg52.h"
/////////////////////////////
//定义LCD控制引脚
////////////////////////////
sbit LCDRS="P2"^0;
sbit LCDRW="P2"^1;
sbit LCDE="P2"^2;
void lcd_write_cmd(unsigned char cmd);
void lcd_write_data(unsigned char dat);
void lcd_clear(void);
void lcd_init(void);
unsigned char lcd_status(void);
void lcd_set_mode(unsigned char cursor, unsigned char text);
void lcd_write_str(unsigned char x,unsigned char y,unsigned char *s);
void lcd_write_char(unsigned char x,unsigned char y, unsigned char d);
#endif