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trafic_slave.c
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trafic_slave.c
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#include <msp430.h>
#include <stdbool.h>
#include "trafic.h"
#include "ports.h"
#include "led.h"
#include "uart.h"
#include "project.h"
#define ACK 0x00
// Times in seconds
#define STARTING_BLINK_INTERVAL 1
#define STARTING_DURATION 10
#define RED_DURATION 10
#define RED_AND_AMBER_DURATION 1
#define GREEN_DURATION 10
#define AMBER_DURATION 1
//Global state variable
static light_state state;
//Global ack received variable
static bool ack_received;
static tLong time_in_state = 0;
void trafic_lights_init(const light_state START_STATE)
{
state = START_STATE;
ack_received = false;
}
void trafic_lights_update(void)
{
switch (state)
{
case OUT_OF_ORDER:
if (++time_in_state % STARTING_BLINK_INTERVAL == 0)
{
led_red_toggle();
led_green_toggle();
}
break;
case RED:
//Other way arround to make this light opposite masters RED
led_red_off();
led_green_on();
break;
case RED_AND_AMBER:
led_red_on();
led_green_on();
break;
case GREEN:
//Other way arround to make this light opposite masters GREEN
led_red_on();
led_green_off();
break;
case AMBER:
led_red_on();
led_green_on();
break;
}
}
void trafic_lights_uart(char message)
{
state = message;
uart_write_char(ACK);
}