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[/] [mips789/] [branches/] [avendor/] [Clib/] [dvc_lib.c] - Blame information for rev 51

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1 35 mcupro 
/******************************************************************
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 *                                                                *
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 *    Author: Liwei                                               *
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 *                                                                *
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 *    This file is part of the "mips789" project.                 *
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 *    Downloaded from:                                            *
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 *    http://www.opencores.org/pdownloads.cgi/list/mips789        *
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 *                                                                *
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 *    If you encountered any problem, please contact me via       *
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 *    Email:mcupro@opencores.org  or mcupro@163.com               *
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 *                                                                *
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 ******************************************************************/
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15 10 mcupro 
#include "dvc_lib.h"
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void __inline dis_byte(unsigned char data)
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{
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    SEG7LED=data ;
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}
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void dly_us(unsigned int us)
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{
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    int i ;
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    while(us--)
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    {
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        i=FRQ/1000000/3-2 ;
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        while(i--);
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        //delay 1us
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    }
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}
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32 15 mcupro 
void dly_ms(unsigned int ms)
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{
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    int i ,us=1000*ms;
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    while(us--)
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    {
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        i=12;
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        while(i--);
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    }
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}
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42 10 mcupro 
void uart0_putc(unsigned char data)
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{
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    while((STATUS&(1<<2))!=0);
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    UART0_DATA=data ;
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}
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unsigned char uart0_getc(void)
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{
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    unsigned char ret=0 ;
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    while((STATUS&(1<<3))==0);
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    ret=UART0_DATA ;
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    set_bit(CMD,1);
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    set_bit(CMD,1);
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    clr_bit(CMD,1);
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    return ret ;
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}
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unsigned char enqire_rxd(void)
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{
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    return(STATUS&(1<<3))?1:0 ;
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}
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void uart0_putstr(char*str)
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{
64 35 mcupro 
    while(1){
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    if(*str=='\0')return ;
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    else if(*str=='\n')
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        {
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                uart0_putc('\r');
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                uart0_putc(*str++);
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        }
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        else
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                uart0_putc(*str++);
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                }
74 10 mcupro 
}
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void __inline led1_on(void)
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{
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    CMD=CMD&(~(1<<5));
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}
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void __inline led1_off(void)
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{
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    CMD=CMD|(1<<5);
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}
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void __inline led2_on(void)
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{
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    CMD=CMD&(~(1<<6));
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}
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void __inline led2_off(void)
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{
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    CMD=CMD|(1<<6);
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}
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//lcd part
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void LCD_init(void)
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{
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    char i=3 ;
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    CLEARSCREEN ;
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    //clear screen
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    while(i--)
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    {
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        LCD_en_command(DATA_MODE);
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        //set 8 bit data transmission mode
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        dly_us(LCD_INIT_US);
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    }
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    LCD_en_command(OPEN_SCREEN);
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    //open display (enable lcd display)
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    dly_us(LCD_DLY_US);
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    LCD_en_command(DISPLAY_ADDRESS);
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    //set lcd first display address
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    dly_us(LCD_DLY_US);
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    CLEARSCREEN ;
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    //clear screen
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    dly_us(LCD_DLY_US);
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}
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void LCD_en_command(unsigned char command)
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{
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    LCDDATA=command ;
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    clr_bit(CMD,2);
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    // LCD1602_RS=LOW;
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    clr_bit(CMD,3);
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    //LCD1602_RW=LOW;
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    clr_bit(CMD,4);
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    //LCD1602_EN=LOW;
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    dly_us(LCD_DLY_US);
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    set_bit(CMD,4);
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    //LCD1602_EN=HIGH;
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}
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void LCD_en_dat(unsigned char dat)
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{
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    LCDDATA=dat ;
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    set_bit(CMD,2);
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    //LCD1602_RS=HIGH;
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    clr_bit(CMD,3);
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    //LCD1602_RW=LOW;
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    clr_bit(CMD,4);
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    //LCD1602_EN=LOW;
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    dly_us(LCD_DLY_US);
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    set_bit(CMD,4);
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    //LCD1602_EN=HIGH;
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}
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void LCD_set_xy(unsigned char x,unsigned char y)
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{
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    unsigned char address ;
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    if(y==LINE1)
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    address=LINE1_HEAD+x ;
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    else
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    address=LINE2_HEAD+x ;
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    LCD_en_command(address);
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}
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void LCD_write_char(unsigned x,unsigned char y,unsigned char dat)
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{
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    LCD_set_xy(x,y);
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    LCD_en_dat(dat);
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}
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161 
void LCD_write_string(unsigned char X,unsigned char Y,unsigned char*s)
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{
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    LCD_set_xy(X,Y);
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    while(*s)
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    {
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        LCD_en_dat(*s++);
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    }
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}
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170 
void download()
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{
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    unsigned char*addr=(void*)0 ;
173 15 mcupro 
    uart0_putstr((char*)"This is MIPS789 BOOTLOADER\n");
174 10 mcupro 
    dis_byte(0xcc);
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    //attenions please'!'
176 35 mcupro 
    while(uart0_getc()!='!');
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    uart0_putc((unsigned char)('O'));
178 10 mcupro 
    //'O'k .i am ready
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    while(1)
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    {
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        *addr=(unsigned char)uart0_getc();
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        dis_byte((unsigned char)(*addr++));
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    }
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}
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186 
void tmr_en(unsigned int cntr)
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{
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    set_bit(CMD,8);
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    TMR_DATA=cntr ;
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    tmr_clr();
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}
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193 
void tmr_disen(void)
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{
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    clr_bit(CMD,8);
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    clr_bit(CMD,7);
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}
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199 
void tmr_clr(void)
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{
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    set_bit(CMD,7);
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    set_bit(CMD,7);
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    clr_bit(CMD,7);
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    clr_bit(CMD,7);
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}
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207 
unsigned int  read_tmr()
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{
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    return TMR_DATA ;
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}
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212 
 
213 
unsigned char get_key1()
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{
215 15 mcupro 
    return(STATUS&1)?0:1 ;
216 10 mcupro 
}
217 
 
218 
unsigned char get_key2()
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{
220 15 mcupro 
    return(STATUS&(1<<1))?0:1 ;
221 10 mcupro 
}

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