main.c

使用Mega128单片机编写的液晶、串口、菜单的C程序。

//ICC-AVR application builder : 2007-11-19 15:57:27
// Target : M128
// Crystal: 4.0000Mhz

#include <iom128v.h>
#include <macros.h>
#include "stdtypes.h"
#include "timer.h"
#include "key.h"
#include "port.h"
#include "lcd.h"
#include "menu.h"
#define INT8U  unsigned char
extern UNS8 key_num;
float para;



void delay_ms(unsigned int time);
void delay_us(int time);
unsigned char key_function(void);

void testfloat(int i,int j,float test)//用此程序显示8数组
{
                      //定义一个浮点数变量
  char temp[8];       //定义此数组，用于存放格式化输出字符串
  int k;
  for(k = 0; k < 8; k++)
  		{
  		temp[k]=' ';
  		}     
  

  sprintf((char *)&temp,"%4.2f",test);   //格式化输出转换，输出宽度4，精度0.01
  //strcat(temp,"\r\n");                     //加回车换行符
  LCD_write_string(i, j,temp);
 // UsartSend1(temp, strlen(temp));       //通过串口一发送出去
  
}



//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 XDIV  = 0x00; //xtal divider
 XMCRA = 0x00; //external memory
 port_init();

 MCUCR = 0x00;
 EICRA = 0x00; //extended ext ints
 EICRB = 0x00; //extended ext ints
 EIMSK = 0x00;
 TIMSK = 0x01; //timer interrupt sources
 ETIMSK = 0x00; //extended timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

//
void main(void)
{
 char row1[16];
 UNS8 i,j=1;

 
 init_devices();
 LCD_init();
 timer0_init();
 MCUCR = 0x00;//IO

 g_ReceiveKeyFlag=0;
 g_KeyValue=0;
 key_function();
 
 
 SEI(); //re-enable interrupts
 //all peripherals are now initialized

 
 while(1)
 {
 
 }
 
}


/*				微秒级延时程序	  		*/
void delay_us(int time)
	 {     
  	  do
	  	{
		 time--;
		}	
  	  while (time>1);
	 }	  
/*	  		    毫秒级延时程序			*/	 
void delay_ms(unsigned int time)
	 {
	  while(time!=0)
	  	  {		
		   delay_us(1000);
		   time--;
		  }
	 }			
	 
	 
/*菜单功能函数，使用键盘实现显示、测量、设置、保存、上、下功能*/
unsigned char key_function(void)
{
 //unsigned char i;
  
  KeyProcess();

  switch (key_num) {
  //调用菜单功能函数			
  case  '1': display_lcd ();				//display
  case  '2': set_up ();  					 //set up
  case  '3': para_up (para);				   //para up
  case  '5': para_down (para);		  		 //measure
  case  '6': measure ();						 //save
  case  '7': save ();							 //down
  default : main_menu ();
  } 
}