DO ADC 89S52.rar_8051 ADC_ADC 0804 8051

/** ****************************************************************************** * Ten Tep : Main.c * Tac Gia : TRAN TRUNG KIEN * Cong Ty : DIEN TU DONG HOA HINH DUONG * Website : http://www.binhduongaec.com.vn/ * Phien Ban : V1.0.0 * Ngay : 10/8/2016 * Tom Tat : Chuong trinh chinh, thuc hien cac chuc nang ADC_DAC KIT89s52 * * ****************************************************************************** * Chu Y : * ****************************************************************************** */ #include <REGX52.H> //KHAI BAO CHAN GIAO TIEP LCD16x02 4 Bit #define LCD_RS P1_0 #define LCD_RW P1_1 #define LCD_EN P1_2 #define LCD_D4 P1_4 #define LCD_D5 P1_5 #define LCD_D6 P1_6 #define LCD_D7 P1_7 // Khai bao ket noi voi ADC0804 #define ADC0804_DATA P0 sbit ADC0804_CS = P3^4; sbit ADC0804_RD = P3^5; sbit ADC0804_WR = P3^6; sbit ADC0804_INTR = P3^7; //Khai bao bien luu du lieu unsigned char adc_value; // Bien nhan gia tri ADC unsigned int voltage; // Bien luu dien ap unsigned char dac[]={10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190,200,210,220,230,240,250,240,230,220,210,200,190,180,170,160,150,140,130,120,110,100,90,80,70,60,50,40,30,20,10}; unsigned int h; /**************Ham Delay*********************/ void delay(unsigned int t){ //Ham tao tre unsigned int i,j; for(i=0;i<t;i++)for(j=0;j<100;j++); } void delay_us(unsigned int t){ unsigned int i; for(i=0;i<t;i++); } void delay_ms(unsigned int t){ unsigned int i,j; for(i=0;i<t;i++) for(j=0;j<125;j++); } /**************Ctr giao tiep LCD 16x2 4bit**********************/ void LCD_Enable(void){ LCD_EN =1; delay_us(3); LCD_EN=0; delay_us(50); } //Ham Gui 4 Bit Du Lieu Ra LCD void LCD_Send4Bit(unsigned char Data){ LCD_D4=Data & 0x01; LCD_D5=(Data>>1)&1; LCD_D6=(Data>>2)&1; LCD_D7=(Data>>3)&1; } // Ham Gui 1 Lenh Cho LCD void LCD_SendCommand(unsigned char command){ LCD_Send4Bit(command >>4);/* Gui 4 bit cao */ LCD_Enable(); LCD_Send4Bit(command); /* Gui 4 bit thap*/ LCD_Enable(); } void LCD_Clear(){// Ham Xoa Man Hinh LCD LCD_SendCommand(0x01); delay_us(10); } // Ham Khoi Tao LCD void LCD_Init(){ LCD_Send4Bit(0x00); delay_ms(20); LCD_RS=0; LCD_RW=0; LCD_Send4Bit(0x03); LCD_Enable(); delay_ms(5); LCD_Enable(); delay_us(100); LCD_Enable(); LCD_Send4Bit(0x02); LCD_Enable(); LCD_SendCommand( 0x28 ); LCD_SendCommand( 0x0c); LCD_SendCommand( 0x06 ); LCD_SendCommand(0x01); } void LCD_Gotoxy(unsigned char x, unsigned char y){ unsigned char address; if(!y)address=(0x80+x); else address=(0xc0+x); delay_us(1000); LCD_SendCommand(address); delay_us(50); } void LCD_PutChar(unsigned char Data){//Ham Gui 1 Ki Tu LCD_RS=1; LCD_SendCommand(Data); LCD_RS=0 ; } void LCD_Puts(char *s){//Ham gui 1 chuoi ky tu while (*s){ LCD_PutChar(*s); s++; } } /********Ham doc ADC*************/ unsigned char ADC0804_Read() { unsigned char kq; // Chon chip ADC0804_CS = 0; // Tao xung bat dau chuyen doi ADC0804_WR = 0; ADC0804_WR = 1; // Doi cho den khi chuyen doi xong while(ADC0804_INTR); // Doc gia tri sau khi chuyen doi ADC0804_RD = 0; kq = ADC0804_DATA; ADC0804_RD = 1; return kq; } void main() { LCD_Init(); delay_ms(100); LCD_Puts("DIEN TU DONG HOA"); delay_ms(200); LCD_Gotoxy(0,1); LCD_Puts(" BINH DUONG AEC"); delay_ms(1000); LCD_Clear(); delay_ms(100); LCD_Puts(" TEST ADC"); delay_ms(2000); LCD_Clear(); delay_ms(100); while(1) { adc_value = ADC0804_Read(); LCD_Gotoxy(0,0); LCD_Puts("GIA TRI:"); LCD_Gotoxy(10,0); LCD_PutChar(adc_value/100+0x30); LCD_PutChar(adc_value%100/10+0x30); LCD_PutChar(adc_value%10+0x30); /////////////////////// voltage = adc_value * 19.61f; LCD_Gotoxy(0,1); LCD_Puts("DIEN AP:"); LCD_PutChar(voltage/1000+0x30); LCD_PutChar('.'); LCD_PutChar(voltage%1000/100+0x30); LCD_PutChar(voltage%100/10+0x30); LCD_PutChar(voltage%10+0x30); LCD_PutChar('V'); ////////////////////// P2 = adc_value; ///////////////// delay_ms(1000); } }