这样一弄1602对外的接口只有8个，除去2个电源，只需要6个IO口就可以取得了

参考http://blog.csdn.net/zzwdkxx/article/details/8296077写的程序，简单的改了改，因为参考的1602的程序就是C语言驱动51单片机，而CC2530本身就是51核的，加上一些初始化函数，很容易就能实现

/*--------------------------------------------------------------*///Name:   LCD1602四线驱动程序//File:    1602.c//Date:   15-11-16//Ver:  0.1/*--------------------------------------------------------------*/#include <ioCC2530.h>//LCD1602接口定义             #define   LCD_DATA    P0  //P0口(P0_4~P0_7)与LCD高四位(D4~D7)对应相接#define   LCD1602_RS  P1_0    #define LCD1602_EN  P1_1//延时函数,12mhz 6t延迟时间10*255usvoid System_init(void); void LCD_init(void);void LCD_en_write(void);void LCD_write_command(unsigned char command) ;void LCD_write_data(unsigned char Recdata);void LCD_set_xy (unsigned char x, unsigned char y);void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s);void LCD_write_char(unsigned char X,unsigned char Y,unsigned char Recdata);void delay_nus(unsigned int n);void delay_nms(unsigned int n);//以下函数用于输出字符串和数字int LCD_PutNum(unsigned long num,int XS,int pos);int LCD_PutStr(unsigned char *DData,int pos);void System_init(void)  {CLKCONCMD &= ~0x40;      // 设置系统时钟源为 32MHZ晶振while(CLKCONSTA & 0x40); // 等待晶振稳定 CLKCONCMD &= ~0x47; P0DIR |= 1<<4|1<<5|1<<6|1<<7;P1DIR |= 1<<0|1<<1|1<<2;}void main(void) {System_init();LCD_init();LCD_PutStr("Hello,World!",0);while(1);}//-------------------------1us延时函数---------------------------------void delay_1us(void) {int i = 0;for(i=0;i<33;i++);}//------------------------N us延时函数---------------------------------void delay_nus(unsigned int n) {unsigned int i=0;for (i=0;i<n;i++)delay_1us();}//-----------------------1ms延时函数----------------------------------void delay_1ms(void){unsigned int i;for (i=0;i<1140;i++);}//-----------------------N ms延时函数---------------------------------void delay_nms(unsigned int n){unsigned int i=0;for (i=0;i<n;i++)delay_1ms();}//------------------------液晶初始化-----------------------------------void LCD_init(void){LCD_write_command(0x28);delay_nus(40); LCD_en_write();delay_nus(40);LCD_write_command(0x28); //4位显示LCD_write_command(0x0c); //显示开LCD_write_command(0x01); //清屏delay_nms(2);}//----------------------液晶使能函数-------------------------------------void LCD_en_write(void){                       //EN由高电平跳变到低电平时液晶使能LCD1602_EN=1;delay_nus(1);LCD1602_EN=0;}//------------------------写指令函数--------------------------------------void LCD_write_command(unsigned char command) {delay_nus(16);LCD1602_RS=0; //RS=0LCD_DATA &=0X0f; //清高四位LCD_DATA|=command&0xf0; //写高四位LCD_en_write();command=command<<4; //低四位移到高四位LCD_DATA&=0x0f; //清高四位LCD_DATA|=command&0xf0; //写低四位LCD_en_write();}//------------------------写数据函数--------------------------------------void LCD_write_data(unsigned char Recdata) {delay_nus(16);LCD1602_RS=1; //RS=1LCD_DATA&=0X0f; //清高四位LCD_DATA|=Recdata&0xf0; //写高四位LCD_en_write();Recdata=Recdata<<4; //低四位移到高四位LCD_DATA&=0X0f; //清高四位LCD_DATA|=Recdata&0xf0; //写低四位LCD_en_write();                                                                                                                                                                                                                                                                                                                                                                                            }//-----------------------地址定位函数-------------------------------------void LCD_set_xy( unsigned char x, unsigned char y ) {unsigned char address;if (y == 0) address = 0x80 + x;else address = 0xc0 + x;LCD_write_command(address);}//----------------------在某个地址处，写一个字符----------------------------void LCD_write_char(unsigned char X,unsigned char Y,unsigned char Recdata) //列x=0~15,行y=0,1{LCD_set_xy(X, Y); //写地址LCD_write_data(Recdata);}//----------------------------输出字符串-------------------------------------int LCD_PutStr(unsigned char *DData,int pos)  //pos表示字符显示位置，0~31{ unsigned char i; if(pos==-1){LCD_write_command(0x01); //清屏delay_nms(2);pos=0; } while((*DData)!='\0'){   switch(*DData){ case '\n': //如果是\n，则换行 { if(pos<17){for(i=pos;i<16;i++) LCD_write_char(i%16, i/16,' ');pos=16;}else{ for(i=pos;i<32;i++) LCD_write_char(i%16, i/16,' ');pos=0;} break; }case '\b': //如果是\b，则退格{if(pos>0) pos--;LCD_write_char(pos%16, pos/16, ' '); break; }default: { if((*DData)<0x20)  //小于0x20的显示不了？{*DData=' ';}LCD_write_char(pos%16, pos/16,*DData);pos++; break; } } DData++; }return(pos);}//----------------------------输出数字---------------------------------//这段程序写法我的理解大致是这样：num为去掉小数点之后的数字，XS为小数点//从左数第几位，pos为显示的位置//---------------------------------------------------------------------int LCD_PutNum(unsigned long num,int XS,int pos){ unsigned long tmp=0; unsigned char numbits=0; //总数字位数if(pos==-1){ LCD_write_command(0x01);delay_nms(2); pos=0; } if(num==0){LCD_write_char(pos%16, pos/16, '0');pos++;}else{if(num<0){ LCD_write_char(pos%16, pos/16, '-'); num*=(-1); pos++; } while(num)   //例如数字1234，经过这个运算变成了4321{ tmp=tmp*10+(num%10); num=num/10; numbits++;} while(tmp){ LCD_write_char(pos%16, pos/16, (tmp%10)+48);tmp=tmp/10;pos++;numbits--;if(numbits==XS) pos=LCD_PutStr(".",pos); //插入小数点}while(numbits--){LCD_write_char(pos%16, pos/16, '0');pos++;}}return(pos);}

上电测试

成功了