MSP430各系列单片机串行控制LCD12864头文件

/*************************************************************** *MSP430各系列单片机串行控制LCD12864头文件 *by:杜运福 2011-3-20 *文件名称：MSP430_LCD12864.c ***************************************************************/ #define uint unsigned int #define uchar unsigned char #define ulong unsigned long #define SID BIT0 #define SCLK BIT1 #define CS BIT2 #define LCDPORT P1OUT #define SID_1 LCDPORT |= SID #define SID_0 LCDPORT &= ~SID #define SCLK_1 LCDPORT |= SCLK #define SCLK_0 LCDPORT &= ~SCLK #define CS_1 LCDPORT |= CS #define CS_0 LCDPORT &= ~CS //延时 n (ms) void delay(uint nms) { while(nms>0) { __delay_cycles(1000); --nms; } } //LCD12864连接端口初始化 void LCDPort_Init() { P1SEL = 0; P1DIR |= BIT0+BIT1+BIT2+BIT3; P1OUT = 0xff; } /*********************************************************** *名 称：LCD_Write_cmd() *功 能：写一个命令到LCD12864 *入口参数：cmd:待写入的命令，无符号字节形式 *出口参数：无 *说 明：写入命令时，RW=0，RS=0 扩展成24位串行发送 *格 式：11111 RW RS 0 xxxx0000 xxxx0000 * |最高的字节 |命令的bit7~4|命令的bit3~0| ***********************************************************/ void LCD_Write_cmd(uchar cmd) { uchar i,high4bits,low4bits; ulong lcdcmd; high4bits = cmd & 0xf0; low4bits = (cmd<<4)&0xf0; lcdcmd=((ulong)0xf8<<16)+((ulong)high4bits<<8)+(ulong)low4bits; CS_1; SCLK_0; for(i=0;i<24;i++) { SID_0; if(lcdcmd & 0x00800000) SID_1; lcdcmd <<=1; SCLK_1; _NOP(); SCLK_0; } CS_0; } void Write_cmd(uchar cmd) //写命令到LCD12864 { LCD_Write_cmd(cmd); } /*********************************************************** *名 称：LCD_Write_Byte() *功 能：向LCD12864写入一个字节数据 *入口参数：byte:待写入的字符，无符号形式 *出口参数：无 *范 例：LCD_Write_Byte('F') //写入字符'F' ***********************************************************/ void LCD_Write_Byte(uchar byte) { uchar i,high4bits,low4bits; ulong lcddat; //while(IsBusy());/// high4bits = byte & 0xf0; low4bits = (byte<<4)&0xf0; lcddat=((ulong)0xfa<<16)+((ulong)high4bits<<8)+(ulong)low4bits; CS_1; for(i=0;i<24;i++) { SID_0; if(lcddat & 0x00800000) SID_1; lcddat <<=1; SCLK_1; SCLK_0; } CS_0; } void Write_data(uchar dat) //写一个字符到LCD12864 { LCD_Write_Byte(dat); } void Write_char(uchar ch) //写一个字符到LCD12864 { LCD_Write_Byte(ch); } /****************************************************/ //LCD12864初始化 void LCD_Init() { P1OUT &= ~BIT3; //复位LCD12864 __delay_cycles(50000); //50ms P1OUT |= BIT3; __delay_cycles(50000); LCD_Write_cmd(0x30); //开显示 __delay_cycles(150); //150us LCD_Write_cmd(0x30); __delay_cycles(50); //50us LCD_Write_cmd(0x0c); __delay_cycles(150); //150us LCD_Write_cmd(0x01); __delay_cycles(12000);//12ms LCD_Write_cmd(0x06); __delay_cycles(10); //10us LCD_Write_cmd(0x02); __delay_cycles(10); //10us LCD_Write_cmd(0x80); __delay_cycles(10); //10us } /*********************************************************** *名 称：LCD_pos() *功 能：设置液晶的显示位置 *入口参数：x:第几行，1~4对应第1行~第4行 * y:第几列，0~15对应第1列~第16列 *出口参数：无 *范 例：LCD_pos(2,3) //第二行，第四列 ***********************************************************/ void LCD_pos(uchar x,uchar y) { uchar pos; switch(x) { case 1:pos=0x80;break; case 2:pos=0x90;break; case 3:pos=0x88;break; case 4:pos=0x98;break; default:pos=0x80; } pos += y; LCD_Write_cmd(pos); } void Write_pos(uchar x,uchar y) //写地址 等效LCD_pos() { LCD_pos(x,y); } void Set_pos(uchar x,uchar y) //按自然习惯设置行列位置 { LCD_pos(x,y-1); } /*********************************************************** *名 称：LCD_flash() *功 能：LCD闪烁函数 *入口参数：times:屏幕闪烁的次数 1~255次 *出口参数：无 *说 明：闪烁周期为800ms左右 ***********************************************************/ void LCD_flash(uchar times) { while(times>0) { LCD_Write_cmd(0x08); delay(400); LCD_Write_cmd(0x0C); delay(400); --times; } }