lcd.c

该程序将A/D采样后的值通过串口传送到上位机上

#include "c8051f040.h"
#include "STDIO.h"
#include "ADC.h"
#include "const.h"
unsigned int result;
void Delay1us(unsigned char);
void Delay1ms(unsigned char);
void Delay1s(unsigned char T);           
void ADC0_Init (void)
{
   char SFRPAGE_SAVE = SFRPAGE;        
   SFRPAGE = LEGACY_PAGE;              

   REF0CN = 0x07;

   SFRPAGE = ADC0_PAGE;                
	ADC0CF    = 0x10;
    ADC0CN    = 0xC0;
   AMX0SL = 0x00;                      
   SFRPAGE = SFRPAGE_SAVE;            
}

void ADC0_Conver (void)
{
   unsigned int data temp;
   char SFRPAGE_SAVE = SFRPAGE;        
   SFRPAGE = ADC0_PAGE;                
		AMX0SL = 0;				         
		Delay1ms(1);
		AD0INT = 0;                     
		AD0BUSY = 1;
		while (!AD0INT);
		temp = ADC0H;
		temp = temp*256 + ADC0L;
		result = temp;                
		SFRPAGE = SFRPAGE_SAVE;    
   }
void Timer_Init()
{
   SFRPAGE   = TMR3_PAGE;
    TMR3CN    = 0x04;
    TMR3CF    = 0x08;
    RCAP3L    = 0x60;
    RCAP3H    = 0xFF;
}
void UART_Init()
{
	SFRPAGE   = UART0_PAGE;
    SCON0     = 0x50;
    SSTA0     = 0x1A;
	ES0=0;
	PS=0;
	TI0=1;
	RI0=0;
}
void Port_IO_Init()
{
   SFRPAGE = CONFIG_PAGE;             
	XBR0 = 0x04;
	XBR1 = 0x00;
	XBR2 = 0x40;
   P5MDOUT = 0xf0;         
}
void Oscillator_Init()
{
	SFRPAGE   = CONFIG_PAGE;
    OSCICN    = 0x83;
}
void Delay1us(unsigned char T) 
{	while(T){
	T--;
	}
}
void Delay1ms(unsigned char T)
{
	while (T)
	{
		Delay1us(200);
		Delay1us(200);
		Delay1us(200);
		Delay1us(200);
		Delay1us(200);
		T--;
	}
}
void Delay1s(unsigned char T)
{
	while (T)
	{
		Delay1ms(200);
		Delay1ms(200);
		Delay1ms(200);
		Delay1ms(200);
		Delay1ms(200);
		T--;
	}
}
void main(){
	unsigned int i;
   float voltage;
   unsigned int tp;
   Oscillator_Init();
    WDTCN=0xDE;                   
    WDTCN=0xAD;
	Port_IO_Init();
	Timer_Init();
    UART_Init();
  	ADC0_Init();
while(1)
	{
      Delay1ms(2000);
      ADC0_Conver();

      SFRPAGE = UART0_PAGE;               
      printf("\n");
      SFRPAGE = CONFIG_PAGE;              
        	voltage=result*2860.0/4095;
         tp=voltage;
			i=0;
               SFRPAGE = UART0_PAGE;               
      			printf ("Channel %d voltage is %dmV\n",i,tp);
               SFRPAGE = CONFIG_PAGE;             
				break;
		 	}
   	
	}