[Sangcao]

Anh Nam a , day la ctr cua em, em hien thi tren led 7 doan, phan hien thi ko co gi , chan cua ad7715 em noi chan nhu trong huong dan. day la code:

#include <16f877.h>
#include <defs_16f877A.h>
//#include <AD7715.c>
//#device *=16 ADC=10
#FUSES NOWDT, HS, NOPUT, NOPROTECT, NODEBUG, NOBROWNOUT, NOLVP, NOCPD, NOWRT//HS,NOWDT,NOLVP,NOPUT, NOCPD, NOWRT, NOBROWNOUT, NOPROTECT  //NOWDT, HS, NOPUT, NOPROTECT, NODEBUG, NOBROWNOUT, NOLVP, NOCPD, NOWRT
#use delay(clock=11059200)  // Su dung Fuse nay thi co nhieu , ko biet tai sao?
#use fast_io(b)
#use fast_io(d)
#use fast_io(c)

int8 const  BCD2LED[]={ 0x41, 0xED, 0x54, 0xC4, 0xE8,\
							0xC2, 0x42, 0xE5, 0x40, 0xC0, };
int8      COUNT1 ,COUNT2;

int16     COUNTX,T1,T2;          // Bien trong ngat
int16      BUFF[4], Y0, Y1;        // Bo dem de hien thi so tat hay khong
int8      BCD[4];
 int16 value;
//-------------------------------------------------------------//
#define LED1 RB4              // =0 thi LED sang
#define LED2 RB5
#define LED3 RB6
#define LED4 RB7
//-----------
#define ADC_CS    RC7  // Noi dat GND
#define ADC_RESET RC6   // Noi VCC
#define ADC_DRDY  RC2
#define ADC_DI    RC4
#define ADC_DO    RC5
#define ADC_CLK   RC3



 Void LamTuoi()

   {
       if(COUNT1 >=4)   {COUNT1 = 0;     }
		     PORTB = 0xf0;
           PORTD = BCD2LED[BCD[COUNT1]];  // CHOT*/

              switch (COUNT1) {
               case 0: LED1 =0; //bat led1
                       break;
               case 1: LED2 =0; //bat led2
                       break;
               case 2: LED3 =0; //bat led3
                       break;
               case 3: LED4 =0; //bat led4
                       break;

                       }
              COUNT1 ++;
 }
#int_timer0
void ngat()
   {
       Set_timer0(0);
             COUNT2 ++;
       if (Count2 == 10){
                        Count2 = 0;
                        LamTuoi();
                        //COUNTX = read_adc();
                        }
   }
void InBCD(int8 value4,int8 value3,int8 value2,int8 value1)
     {
          BCD[0]= value4;
          BCD[1]= value3;
          BCD[2]= value2;
          BCD[3]= value1;
     }


void LedView( int16 Value) // DUA SO VAO DE HIEN THI
   {
          BUFF[3]  = Value/1000;
          Y0       = Value%1000;
          BUFF[2]  = Y0/100;
          Y1       = Y0%100;
          BUFF[1]  = Y1/10;
          BUFF[0]  = Y1%10;

          InBCD(BUFF[3],BUFF[2],BUFF[1],BUFF[0]);
   }

void write_adc_byte(Byte data);

adc_init()
{
	ADC_RESET = 0;
   ADC_CLK =1;
	ADC_CS =1;	//Set low to AD7715 chip select low pin
	ADC_RESET =1;	//Set high to AD7715 reset low pin
	delay_ms(30);

	write_adc_byte( 0x12 );			//Communications Register
	write_adc_byte( 0x62 );			//Setup Register info here
}

void write_adc_byte(BYTE data) {
     int8 i;

     ADC_CS =0;
   for(i=1;i<=8;++i) {
      ADC_CLK =0;
     output_bit(PIN_C4,shift_left(&data,1,0));  // Output the MSB of data to

    // DI and at the same time  shift 0 into the LSB of data

      ADC_CLK =1;
                      }
   ADC_CS =1;
}


 int16 read_adc_word() {
   int8 i;
   BYTE data;

   ADC_CS =0;
   for(i=1;i<=16;++i) {
      ADC_CLK =0;
      ADC_CLK =1;
      shift_left(&data,2,input(PIN_C5));
   }
   ADC_CS =1;
   return data;
}



 int16 read_adc_value() {
        int16 value;  //long mac dinh kieu int16

	while ( input(PIN_C2) );
	while ( !input(PIN_C2) );
	while ( input(PIN_C2) );

	write_adc_byte(0x3a);
	value=read_adc_word();

//	return value;
}



void KhoiTao()
{
     set_tris_b(0b00001111);           // 1 Dau vao =0 la dau ra
     set_tris_d(0);                     // ra
     set_tris_c(0b11111111);
     enable_interrupts(global);
     //enable_interrupts(int_ext);
     enable_interrupts(int_timer0);
     Setup_timer_0(RTCC_INTERNAL| RTCC_DIV_4);
     Set_timer0(0) ;              //vao
     Value=0;
     Delay_ms(10);

}
     //-------------------------------------------------------------


void main()
 {    Khoitao();
     adc_init();
       ledview(Value);
       Lamtuoi();

   while (1) {

      read_adc_value() ;

      ledview(Value);
      Lamtuoi();

   }


 }