sahu
Member
i'm trying volt meter code conversion 16f676 to 16f72 step by step . use CCS C
16f676 code as
1st of all trying understand
7seg. aregment
676 as
but confuse whats right
for exampled digit
1 = 1 0 0 1 1 1 1 = 4F Is right or
1 = 1 0 0 1 1 1 1 = 79 is right
16f676 code as
Code:
#include <16F676.h>
#device adc=10
#fuses INTRC_IO,NOWDT,PUT,NOPROTECT,BROWNOUT,NOMCLR
#use delay (clock=4000000) // 4MHz clock
#rom 0x3ff={0x3444}
#byte PORTA = 0x05
#byte PORTC = 0x07
#byte TRISA = 0x85
#byte TRISC = 0x87
#define SPORTA PORTA
#define SPORTC PORTC
#define TICKS_BETWEEN_INTERRUPTS 5000 //5000
#define INTERRUPT_OVERHEAD 35
#define TMR1RESET (0xFFFF-(TICKS_BETWEEN_INTERRUPTS-INTERRUPT_OVERHEAD))
const char SegCode[11] = {0x40,0x57,0x22,0x06,0x15,0x0C,0x08,0x56,0x00,0x04,0xFF};
// 0 1 2 3 4 5 6 7 8 9
const char Column[3] = {0x02,0x01,0x04};
static char Segment[3] = {0x7f,0x7f,0x7f};
static unsigned char ColCount=0x00;
void CPU_SETUP(void);
void Display(void);
void HTO7S(unsigned int32 Num);
byte i;
unsigned int32 result;
#INT_TIMER1
void Timer1(void)
{
set_timer1(TMR1RESET);
Display();
}
void main()
{
unsigned char i;
CPU_SETUP();
while(true)
{
result=0;
for (i=0;i<20;i++)
{
set_adc_channel(3);
delay_ms(1);
result=result+read_adc();
}
//result = 0x3fe;
HTO7S(result/20);
delay_ms(200);
}
}
void CPU_SETUP()
{
setup_comparator(NC_NC_NC_NC); // not use comparator module
setup_adc_ports( sAN3 | VSS_VDD);
setup_adc(ADC_CLOCK_DIV_64);
TRISA=0b00011000;
PORTA=0x27;
TRISC=0b00000000;
PORTC=0x37;
setup_timer_1(T1_INTERNAL|T1_DIV_BY_1);
set_timer1(TMR1RESET);
enable_interrupts(GLOBAL);
enable_interrupts(INT_TIMER1);
}
//-------------------------------------
// Display routine
//-------------------------------------
void Display()
{
PORTA = 0b00100111; // off all digits column and Segment G
PORTC = 0b00111111; // off segment a-f
delay_cycles(2);
if (ColCount>=3)
ColCount=0;
SPORTC = Segment[ColCount];
SPORTA = ((Segment[ColCount] & 0b01000000)>>1) | (Column[ColCount]^0x07);
ColCount++;
}
//--------------------------------------
// Convet HEX 2 byte to 7-Segment code
//--------------------------------------
void HTO7S(unsigned int32 Num)
{
unsigned int32 res;
Segment[0]=SegCode[30*Num/10230];
if (Segment[0]==0x40)
Segment[0]=0xFF;
res = 30*Num%10230;
Segment[1]=SegCode[10*res/10230];
res=10*res%10230;
Segment[2]=SegCode[10*res/10230];
}
1st of all trying understand
7seg. aregment
676 as
i want 72 asconst char SegCode[11] = {0x40,0x57,0x22,0x06,0x15,0x0C,0x08,0x56,0x00,0x04,0xFF};
// 0 1 2 3 4 5 6 7 8 9
Code:
Ues 7 Segment Common Anod
PORT RB7 = A
PORT RB6 = B
PORT RB5 = C
PORT RB4 = D
PORT RB3 = E
PORT RB2 = F
PORT RB1 = G
PORT RB0 = Display 1
PORT RC7 = Display 2
PORT RC6 = Display 3
***********************************************************************************************
0= on , 1 = off
a
---
| |b
f | g |
---
| |c
e | |
---
d
************************************************************************************************
______________________________________________________
PORT |RB7 |RB6 |RB5 |RB4 |RB3 |RB2 |RB1 |
________|_______|_______|_______|_______|_______|_______|_____|
| A | B | C | D | E | F | G |
|_______|_______|_______|_______|_______|_______|_____|
Digit
_______________________________________________________________
1 = 1 0 0 1 1 1 1 =
_______________________________________________________________
2 = 0 0 1 0 0 1 0 =
_______________________________________________________________
3 = 0 0 0 0 1 1 0 =
_______________________________________________________________
4 = 1 0 0 1 1 0 0 =
_______________________________________________________________
5 = 0 1 0 0 1 0 0 =
_______________________________________________________________
6 = 1 1 0 0 0 0 0 =
_______________________________________________________________
7 = 0 0 0 1 1 1 1 =
_______________________________________________________________
8 = 0 0 0 0 0 0 0 =
_______________________________________________________________
9 = 0 0 0 0 1 0 0 =
_______________________________________________________________
OFF = 1 1 1 1 1 1 1 =
_______________________________________________________________
for exampled digit
1 = 1 0 0 1 1 1 1 = 4F Is right or
1 = 1 0 0 1 1 1 1 = 79 is right