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root / branches / autonomous_recharging / code / projects / autonomous_recharging / archs / I2c test / main.c @ 355

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#include <avr/io.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/sleep.h>
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#include "ring_buffer.h"
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#include "i2c.h"
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// for i2c_byte coming from charge board
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//I2C Message Codes
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#define I2C_MSG_ACKNOWLEDGE       'A'
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#define I2C_MSG_BATTERY_CHARGING  'C'
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#define I2C_MSG_DATA              'D'
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#define I2C_MSG_CONTACT_ERROR     'E'
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#define I2C_MSG_BATTERY_FULL      'F'
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#define I2C_MSG_NO_CONTACT        'N'
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#define I2C_MSG_REQUEST_DATA      'R'
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#define I2C_MSG_GO_TO_SLEEP       'Y'
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#define I2C_MSG_ENTERING_SLEEP    'Z'
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#define I2C_MSG_HOMING            'H'
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#define SW0 PA6
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#define HOMING_PIN PA7
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#define DEBUG 0
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#define USE_I2C 1
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#define MAX_T 300
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#define MIN_T 730
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//range is 0 to 45 C
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//cal tests:
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//room temp - 25
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//value ~500, varies from battery to battery, but is consistent on one battery
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//freezer 737
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//heat gun at a distance 461
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#define MAX_DT -4 //this is the LOWEST ACCEPTABLE ADC value
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#define MAX_DT_ABS 400
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#define VOLT_PLATEAU 50
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//The following times are in seconds
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#define MAX_FAST_TIME 5400
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#define MAX_TRICKLE_TIME 600
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//debug pins
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#define debug_time PA3
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#define debug_curr PA4
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#define debug_volt PA5
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#define debug_temp PA6
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#define debug_12in PA7
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//be sure admux also sets the MUX5 bit which is in ADCSRB
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#define ADMUX_I
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#define ADMUX_V
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#define ADMUX_T
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#define ROBOT_TX PB1
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#define ROBOT_RX PB2
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#define PWM PB3
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#define DETECT_12V PB6
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#define LED1 PB4 //Green
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#define LED2 PB5 //Red
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//LED States:
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//Red - Fast Charging
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//Green - Trickle Charging
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//Both steady - done charging
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//Both Blinking - Error
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#define INT_COUNT 2 //interrupts per second
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#define AVG_COUNT 64 //number of times to count current
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//To enable the PWM write :         TCCR1B = (_Bv(CS10));//enable PWM
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uint8_t interrupt_count = INT_COUNT;
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volatile uint32_t abs_time=1; // start at one second so it doesnt do the minute checks right away
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volatile uint8_t new_second=0; //only used as a boolean
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volatile uint8_t error=0;
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volatile uint8_t status;
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volatile uint8_t steady_current = 0;
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//DT must be triggered twice in a row
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volatile uint8_t last_DT = 0;
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//same for DV
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volatile uint8_t last_DV = 0;
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#define FAST_CHARGE 1
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#define TRICKLE_CHARGE 2
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void setup(void)
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{
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    DDRA = _BV(PA3);
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        PORTA = 0x00;
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        DDRB = (_BV(ROBOT_TX)|_BV(PWM)|_BV(LED1)|_BV(LED2)); //confiure output pins
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        PORTB = 0x00;
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        /*
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        ADCSRA = (_BV(ADEN)|_BV(ADPS2)|_BV(ADPS1)); //start ADC with a division factor of 64
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        TCCR0B = (_BV(CS01)); //set timer 0 for realtime mode
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        TCCR0A = (_BV(TCW0));
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        TIMSK = (_BV(TOIE0)); //enable overflow interrupts
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        TCCR1A = (_BV(COM1B1)|_BV(PWM1B)|_BV(COM1A1)|_BV(PWM1A)); //clear timer 1 on compare, set at 0x00. Fast PWM mode
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        TCCR1B |= _BV(CS10); //leave timer on and set compare to 0 to make output off        
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        //hack stuff so it will run in continuous mode
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        TIMSK |= _BV(TOIE1); //enable overflow interrupt for timer 1
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        OCR1B = 0;
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        OCR1A = 0;
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        sei();*/
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}
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int main(void)
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{
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        setup();
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        i2c_init();
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        setup();
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        OCR1B=0;
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        sei();
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        PORTB|=_BV(LED2);
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        PORTB|=_BV(LED1);
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        delay_ms(500);
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        PORTB&=~_BV(LED2);
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        PORTB&=~_BV(LED1);
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        i2c_putpacket(0x01,"a ", 2);
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        delay_ms(500);
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        PORTB|=_BV(LED2);
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        PORTB|=_BV(LED1);
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while(1);
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        return 1;
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}
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ISR(TIMER0_OVF_vect)
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{
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        if(error)
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                PORTB ^= (_BV(LED1)|_BV(LED2));
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        interrupt_count--;
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        if(interrupt_count==0)
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        {
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                abs_time++;
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                new_second=1;
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                interrupt_count=INT_COUNT;
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        }
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}
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ISR(TIMER1_OVF_vect)
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{
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        //wait(2); //wait a bit so we know the ouput gets set (which happens at timer = 0)
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        TCNT1 = 0;//156; // start out at 156. Now OCR1B - 156 = duty cycle
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}
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ISR(PCINT_vect){;} //so the interrupt doesnt go to the reset vector