1、把本節(jié)課的指針相關(guān)內(nèi)容，反復(fù)學(xué)習(xí)3到5遍，徹底弄懂指針是怎么回事，即使是死記硬背也要記住，等到后邊用的時(shí)候可以實(shí)現(xiàn)頓悟。學(xué)會(huì)指針，就是突破了C語(yǔ)言的一道壁壘。

2，1602所有的指令功能都應(yīng)用一遍，能夠靈活使用1602液晶顯示任意字符串。

‘

#include <reg52.h>#define LCD1602_DB  P0
sbit LCD1602_RS = P1^0;
sbit LCD1602_RW = P1^1;
sbit LCD1602_E  = P1^5;void InitLcd1602();
void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str);void main()
{unsigned char str[] = "Kingst Studio";InitLcd1602();LcdShowStr(2, 0, str);LcdShowStr(0, 1, "Welcome to KST51");while (1);
}
void LcdWaitReady()
{unsigned char sta;LCD1602_DB = 0xff;LCD1602_RS = 0;LCD1602_RW = 1;do{LCD1602_E = 1;sta = LCD1602_DB; 	LCD1602_E = 0;}while (sta & 0x80); 
}
void LcdWriteCmd(unsigned char cmd)
{LcdWaitReady();LCD1602_RS = 0;LCD1602_RW = 0;LCD1602_DB = cmd;LCD1602_E  = 1;LCD1602_E  = 0;
}
void LcdWriteDat(unsigned char dat)
{LcdWaitReady();LCD1602_RS = 1;LCD1602_RW = 0;LCD1602_DB = dat;LCD1602_E  = 1;LCD1602_E  = 0;
}void LcdSetCursor(unsigned char x, unsigned char y)
{unsigned char addr;if(y == 0)addr = 0x00 + x;elseaddr = 0x40 + x;LcdWriteCmd(addr | 0x80); 
}
void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str)
{
LcdSetCursor(x, y);while (*str != '\0')LcdWriteDat(*str++);
}
void InitLcd1602()
{LcdWriteCmd(0x38);  LcdWriteCmd(0x0C); LcdWriteCmd(0x06);  LcdWriteCmd(0x01);  
}

3、嘗試通過串口調(diào)試助手下發(fā)字符在1602液晶上顯示出來。