- PIC16F684 ADC 2

#include <16F684.h>

#device ADC=8

#fuses NOWDT,INTRC_IO, NOCPD, NOPROTECT, NOMCLR, NOPUT, BROWNOUT

#use delay(clock=8000000)

// Camera Mode

#define LED_MODE 1

#define NON_LED_MODE 0

unsigned int8 Camera_Mode;

// Adc 

unsigned int8 value[2];

unsigned int16 value_16[2];

unsigned int8 value_count[2];

void Key_Adc(void)

{

if(++value_count[0] >= 32)

{

value_16[0] /= 32;

if(value[0] > 250)

{

output_high(PIN_C0); // OSD_UP

output_high(PIN_C1); // OSD_RIGHT 

output_high(PIN_C2); // OSD_DOWN  

output_high(PIN_C3); // OSD_ENTER

output_high(PIN_C4); // OSD_LEFT

}

else if(value[0] > 230)

{

output_low(PIN_C2); // OSD_DOWN

}

else if(value[0] > 200)

{

output_low(PIN_C0); // OSD_UP

}

else if(value[0] > 150)

{

output_low(PIN_C1); // OSD_RIGHT

}

else if(value[0] > 100)

{

output_low(PIN_C4); // OSD_LEFT

}

else

{

output_low(PIN_C3); // OSD_ENTER

}

value_count[0] = 0;

}

else

{

value_16[0] += value[0];

}

value[0] = read_adc(); // Built-in A/D read function

}

#define CDS_TIME 50 // * 64

#define DAY 0

#define NIGHT 1

unsigned int8 Day_Night;

void Cds_Adc(void)

{

static unsigned int16 Day_Time;

static unsigned int16 Night_Time;

if(++value_count[1] >= 32)

{

value_16[1] /= 32;

if(value[1] > 47) // NIGHT -> DAY (0.6V)

{

if(++Day_Time >= CDS_TIME)

{

Day_Time = CDS_TIME + 1;

if(Day_Night != DAY)

{

Day_Night = DAY;

// Night Out Low

output_low(PIN_A1);

output_low(PIN_A5);

// Motor R

output_high(PIN_A0); // MOTOR_R

output_low(PIN_C5); // MOTOR_L

delay_ms(150);

output_low(PIN_A0); // MOTOR_R

}

}

Night_Time = 0;

}

else if(value[1] < 31) // DAY -> NIGHT (0.4V)

{

if(++Night_Time >= CDS_TIME)

{

Night_Time = CDS_TIME + 1;

if(Day_Night != NIGHT)

{

Day_Night = NIGHT;

// Night Out High

output_high(PIN_A1);

output_high(PIN_A5);

// Motor L 

output_low(PIN_A0); // MOTOR_R

output_high(PIN_C5); // MOTOR_L

delay_ms(150);

output_low(PIN_C5); // MOTOR_L

}

}

Day_Time = 0;

}

else

{

Night_Time = 0;

Day_Time = 0;

}

value_count[1] = 0;

}

else

{

value_16[1] += value[1];

}

value[1] = read_adc(); // Built-in A/D read function

}

void Motor_Control(unsigned int8 Command)

{

static unsigned int8 Command_Old;

if(Command == Command_Old) return;

switch(Command)

{

case 0 : // NIGHT -> DAY

// Motor R

output_high(PIN_A0); // MOTOR_R

output_low(PIN_C5); // MOTOR_L

delay_ms(150);

output_low(PIN_A0); // MOTOR_R

break;

case 1 : // DAY -> NIGHT

output_low(PIN_A0); // MOTOR_R

output_high(PIN_C5); // MOTOR_L

delay_ms(150);

output_low(PIN_C5); // MOTOR_L

break;

}

Command_Old = Command;

}

void main(void) 

{

static unsigned int8 Adc_Select;

// PORT Init 

set_tris_a(0x1C);  

set_tris_c(0x00);  

// output_a(0x00);  

// output_c(0xFF);

// ADC Init 

setup_adc(ADC_CLOCK_INTERNAL); // Built-in A/D setup function

// Key_Adc

/*

setup_adc_ports(sAN2, VSS_VDD); // Built-in A/D setup function

set_adc_channel(2); // Built-in A/D setup function

*/

// Cds_Adc

/*

setup_adc_ports(sAN4, VSS_VDD); // Built-in A/D setup function

set_adc_channel(3); // Built-in A/D setup function

*/

// GPIO Init

output_high(PIN_C0); // OSD_UP

output_high(PIN_C1); // OSD_RIGHT 

output_high(PIN_C2); // OSD_DOWN  

output_high(PIN_C3); // OSD_ENTER

output_high(PIN_C4); // OSD_LEFT

   // Start Up Pin Out

output_high(PIN_A0); // MOTOR_R

output_low(PIN_C5); // MOTOR_L

   

// Start Up Delay

delay_ms(100);

output_low(PIN_A0); // MOTOR_R

   

Camera_Mode = input(PIN_A3); // 0 = LED_MODE, 1 = NON_LED_MODE

if(Camera_Mode == NON_LED_MODE)

{

set_tris_a(0x3C); // RA5 == Input

}

while(1)

{

delay_ms(1);

Adc_Select ^= 1;

if(Adc_Select)

{

Key_Adc();

// Key -> Cds

setup_adc_ports(sAN4, VSS_VDD);

set_adc_channel(3);

}

else

{

if(Camera_Mode == LED_MODE)

{

Cds_Adc();

}

else if(Camera_Mode == NON_LED_MODE)

{

Motor_Control(input(PIN_A5));

}

// Cds -> Key

setup_adc_ports(sAN2, VSS_VDD);

set_adc_channel(2);

}

}

}