C8051键盘测试程序.doc

#include c8051f000.h#include intrins.h/-#define uchar unsigned char#define uint unsigned int#define BAUDRATE #define SYSCLK void SYSCLK_Init (void);void delaynus(unsigned int q) ; void PORT_Init (void);void SPI0_Init (void);void LCD_Init(void);void SendSPIByte(unsigned char ch);void delaynms (unsigned int j);void writecom(unsigned char com);void writedata(unsigned char d);void writechar(unsigned char ua);void Write_COM(uchar ins);void lcden(datad);void LCD_set_xy( unsigned char x, unsigned char y );void LCD_write_string(unsigned char n);void lcd_key1(void);void lcd_key2(void);void lcd_key3(void);void lcd_key4(void);void UART0_Init (void);void presskey(void);/-/ Global CONSTANTS/-sbit S3=P10;sbit S4=P11;sbit S5=P12;sbit S6=P13;sbit lcdcs=P30;unsigned char comd,kk,sdf,ppca;unsigned char virt_port,v,b,m;unsigned char lcd_data_count;unsigned char *lcdpoint;unsigned char qqq; unsigned char data8;unsigned int i;/-/-void main(void)WDTCN = 0xde; / disable watchdog timerWDTCN = 0xad; SYSCLK_Init ();PORT_Init ();UART0_Init() ; / initialize crossbar and GPIOSPI0_Init (); LCD_Init() ; delaynms (20); delaynus (100); LCD_set_xy(0X00,0); delaynus (200); presskey(); delaynus (200); LCD_write_string(16); delaynus (200); while(1) if(S3=0) Write_COM(0X01); delaynms (200); LCD_set_xy(0X00,0); delaynus (200); lcd_key1(); delaynus (200); LCD_write_string(6); delaynus (200); else if(S4=0) Write_COM(0X01); delaynms (200); LCD_set_xy(0X00,0); delaynus (200); lcd_key2(); delaynus (200); LCD_write_string(6); delaynus (200); else if(S5=0) Write_COM(0X01); delaynms (200); LCD_set_xy(0X00,0); delaynus (200); lcd_key3(); delaynus (200); LCD_write_string(6); delaynus (200); else if(S6=0) Write_COM(0X01); delaynms (200); LCD_set_xy(0X00,0); delaynus (200); lcd_key4(); delaynus (200); LCD_write_string(6); delaynus (200); else /-/ Initialization Subroutines/-/-/ PORT_Init/-void PORT_Init (void) XBR0 = 0x27; / XBAR0: Initial Reset Value XBR1 = 0x00; / XBAR1: Initial Reset Value XBR2 = 0x5c; / XBAR2: Initial Reset Value PRT0CF = 0x14; / Output configuration for P0 PRT1CF = 0x10; / Output configuration for P3 PRT3CF = 0x01; / Output configuration for P3 /-/ SYSCLK_Init/-void SYSCLK_Init (void) OSCXCN = 0x67; / start external oscillator with for (i=0; i 256; i+) ; / XTLVLD blanking interval (1ms) while (!(OSCXCN 0x80) ; / Wait for crystal osc. to settle OSCICN = 0x88; / select external oscillator as SYSCLK /-/ SPI0_Init/-void SPI0_Init (void) SPI0CFG = 0x07; / data sampled on 1st SCK rising edge SPI0CFG|=0xC0; /CKPOL =1; SPI0CN = 0x03; / Master mode; SPI enabled; flags SPI0CKR = SYSCLK/2/2000000-1; / SPI clock = 8MHz (limited by / EEPROM spec.)/-/ UART0_Init/-void UART0_Init (void) SCON = 0x50; / SCON: mode 1, 8-bit UART, enable RX TMOD = 0x20; / TMOD: timer 1, mode 2, 8-bit reload TH1 = -(SYSCLK/BAUDRATE/16); / set Timer1 reload value for baudrate TR1 = 1; / start Timer1 CKCON |= 0x10; / Timer1 uses SYSCLK as time base PCON |= 0x80; / SMOD = 1 TI = 1; / Indicate TX ready/-/ LCD_Init/-void LCD_Init(void) /向LCD送命令/ unsigned int xdata x; delaynms(100); datad=0x00; SendSPIByte(datad); delaynms(10); Write_COM(0x30); delaynms(10); Write_COM(0x30); delaynms(10); Write_COM(0x30); delaynms(10) ; Write_COM(0x28); delaynms(100); virt_port=0; SendSPIByte(virt_port); lcden(virt_port); Write_COM(0x01); delaynms(100); Write_COM(0x06); delaynms(10) ; Write_COM(0x0C); delaynms(500) ; /-/ SendSPIByte/-void SendSPIByte(unsigned char ch) lcdcs=1; delaynus(100); SPIF = 0;SPI0DAT = ch;while (SPIF = 0); delaynus(100); lcdcs=0; delaynus(100); _nop_(); / 等待写结束 /-/ lcden/-void lcden(datad) datad|=0x08; SendSPIByte(datad); datad=0xf7; SendSPIByte(datad);/-/ delaynms/-void delaynms (unsigned int uu) unsigned int oo,ll; for (oo=0;oouu;oo+) for(ll=0;ll1140;ll+); /-/ writechar/-void writechar(unsigned char ua) uint j; uchar t,x; for(j=0;j500;j+); datad|=0x02; SendSPIByte(datad); datad|=ua0xf0; SendSPIByte(datad); datad|=0x08; SendSPIByte(datad); for(x=0;x3;x+); datad=0xf7; SendSPIByte(datad); for(x=0;x3;x+); datad=0x07; delaynus(100); SendSPIByte(virt_port); t|=ua0x0f; datad|=t4; SendSPIByte(datad); for(x=0;x3;x+); datad|=0x08; SendSPIByte(datad); for(x=0;x3;x+); datad=0xf7; SendSPIByte(datad); for(x=0;x3;x+); datad=0x00; t=0x00; SendSPIByte(datad);/-/ Write_COM/-void Write_COM(uchar ins) uchar t; uint j; for(j=0;j5000;j+); /用延时代替查询 virt_port|=ins0xf0; SendSPIByte(virt_port); /LCDE=1; virt_port|=0x08; SendSPIByte(virt_port); for(i=3;i0;i-); virt_port=0x08; SendSPIByte(virt_port); virt_port=0x07; SendSPIByte(virt_port); t=ins4; virt_port|=t0xf0; SendSPIByte(virt_port); virt_port|=0x08; SendSPIByte(virt_port); for(i=3;i0;i-); virt_port=0x08; SendSPIByte(virt_port); virt_port=0; SendSPIByte(virt_port);/-/ LCD_set_xy/-void LCD_set_xy( unsigned char x, unsigned char y ) unsigned char address; if (y = 0) address = 0x80 + x; else address = 0xc0 + x; Write_COM(address);/-/ LCD_write_string/-void LCD_write_string(unsigned char n) unsigned char data1; for(n;n0;n-) data1=*lcdpoint; writechar(data1); delaynms(100); lcdpoint+; delaynus(10); /-/ presskey/-void presskey(void) unsigned char xdata DDCdata16=0x50,0x4c,0x45,0x41,0x53,0x45,0x20,0x50,0x52,0x45,0x53,0x53,0x20,0x4b,0x45,0x59; lcdpoint=DDCdata;/-/ lcd_key1/-void lcd_key1(void) unsigned char xdata key1ok6=0x53,0x33,0x20,0x4f,0x4b,0x21; lcdpoint=key1ok;/-/ lcd_key2/-void lcd_key2(void) unsigned char xdata key2ok6=0x53,0x34,0x20,0x4f,0x4b,0x21; lcdpoint=key2ok;/-/ lcd_key3/-void lcd_key3