Hi...
i have problem to show multiplexed 8 ADC data to virtual terminal or to LCD
the problem is i don't know how to do it ?
is there anyone can help
here is my code and schematic bitmap :
#include <mega16.h> #include <delay.h> #include <stdio.h> // Alphanumeric LCD Module functions #include <alcd.h> // Alphanumeric LCD Module functions #asm .equ __lcd_port=0x15 ;PORTC #endasm //#include <lcd.h> #define ADC_VREF_TYPE 0x20 //#define ADC_VREF_TYPE 0x00 // Read the AD conversion result unsigned int read_adc(unsigned char adc_input) { ADMUX=adc_input | (ADC_VREF_TYPE & 0xff); // Delay needed for the stabilization of the ADC input voltage delay_us(10); // Start the AD conversion ADCSRA|=0x40; // Wait for the AD conversion to complete while ((ADCSRA & 0x10)==0); ADCSRA|=0x10; return ADCW; } // Declare your global variables here void main(void) { // Declare your local variables here float s1,s2,s3,s4,s5,s6,s7,s8; //bit b1,b2,b3,b4,b5,b6,b7,b8; unsigned char ts[16]; // Input/Output Ports initialization // Port A initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTA=0x00; DDRA=0x00; // Port B initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=Out Func1=Out Func0=Out // State7=T State6=T State5=T State4=T State3=T State2=0 State1=0 State0=0 PORTB=0x0f; //0x00; DDRB=0x0f; //0x07; // Analog Comparator initialization // Analog Comparator: Off // Analog Comparator Input Capture by Timer/Counter 1: Off ACSR=0x80; SFIOR=0x00; // Port C initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00; DDRC=0x00; // Port D initialization // Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x00; DDRD=0x00; // Timer/Counter 0 initialization // Clock source: System Clock // Clock value: Timer 0 Stopped // Mode: Normal top=0xFF // OC0 output: Disconnected TCCR0=0x00; TCNT0=0x00; OCR0=0x00; // Timer/Counter 1 initialization // Clock source: System Clock // Clock value: Timer1 Stopped // Mode: Normal top=0xFFFF // OC1A output: Discon. // OC1B output: Discon. // Noise Canceler: Off // Input Capture on Falling Edge // Timer1 Overflow Interrupt: Off // Input Capture Interrupt: Off // Compare A Match Interrupt: Off // Compare B Match Interrupt: Off TCCR1A=0x00; TCCR1B=0x00; TCNT1H=0x00; TCNT1L=0x00; ICR1H=0x00; ICR1L=0x00; OCR1AH=0x00; OCR1AL=0x00; OCR1BH=0x00; OCR1BL=0x00; // Timer/Counter 2 initialization // Clock source: System Clock // Clock value: Timer2 Stopped // Mode: Normal top=0xFF // OC2 output: Disconnected ASSR=0x00; TCCR2=0x00; TCNT2=0x00; OCR2=0x00; // External Interrupt(s) initialization // INT0: Off // INT1: Off // INT2: Off MCUCR=0x00; MCUCSR=0x00; // Timer(s)/Counter(s) Interrupt(s) initialization TIMSK=0x00; // ADC initialization // ADC Clock frequency: 691.200 kHz // ADC Voltage Reference: AREF pin // ADC Auto Trigger Source: Free Running ADMUX=ADC_VREF_TYPE & 0xff; ADCSRA=0x84; SFIOR&=0x1F; // Alphanumeric LCD initialization // Connections specified in the // Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu: // RS - PORTC Bit 0 // RD - PORTC Bit 1 // EN - PORTC Bit 2 // D4 - PORTC Bit 4 // D5 - PORTC Bit 5 // D6 - PORTC Bit 6 // D7 - PORTC Bit 7 // Characters/line: 8 lcd_init (16);//(8); while (1) { PORTB=0b00000000;s1=(float)read_adc(0); PORTB=0b00000001;s2=(float)read_adc(0); PORTB=0b00000010;s3=(float)read_adc(0); PORTB=0b00000011;s4=(float)read_adc(0); PORTB=0b00000100;s5=(float)read_adc(0); PORTB=0b00000101;s6=(float)read_adc(0); PORTB=0b00000110;s7=(float)read_adc(0); PORTB=0b00000111;s8=(float)read_adc(0); lcd_gotoxy(0,0);lcd_putsf("multiplex 4051?"); //sprintf(ts,"%d%d%d%d%d%d%d%d",s1,s2,s3,s4,s5,s6,s7,s8); lcd_gotoxy(0,1);lcd_puts(ts); // Place your code here } ; }