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#include "trafficlight.h"
uint8_t cur_color_1 = RED_TF1;
uint8_t cur_color_2 = YELLOW_TF2;
uint32_t period_1 = RED_PERIOD;
uint32_t period_2 = GREEN_PERIOD;
void Timer0_Handler() {
TimerIntClear(TIMER0_BASE, TIMER_BOTH);
switch(cur_color_1) {
case RED_TF1:
cur_color_1 = GREEN_TF1;
set_color(cur_color_1);
TimerLoadSet(TIMER0_BASE, TIMER_BOTH, GREEN_PERIOD);
break;
case YELLOW_TF1:
cur_color_1 = RED_TF1;
set_color(cur_color_1);
TimerLoadSet(TIMER0_BASE, TIMER_BOTH, RED_PERIOD);
break;
case GREEN_TF1:
cur_color_1 = YELLOW_TF1;
set_color(cur_color_1);
TimerLoadSet(TIMER0_BASE, TIMER_BOTH, YELLOW_PERIOD);
break;
}
}
void Timer1_Handler() {
TimerIntClear(TIMER1_BASE, TIMER_BOTH);
switch(cur_color_2) {
case RED_TF2:
cur_color_2 = GREEN_TF2;
set_color(cur_color_2);
TimerLoadSet(TIMER1_BASE, TIMER_BOTH, GREEN_PERIOD);
break;
case YELLOW_TF2:
cur_color_2 = RED_TF2;
set_color(cur_color_2);
TimerLoadSet(TIMER1_BASE, TIMER_BOTH, RED_PERIOD);
break;
case GREEN_TF2:
cur_color_2 = YELLOW_TF2;
set_color(cur_color_2);
TimerLoadSet(TIMER1_BASE, TIMER_BOTH, YELLOW_PERIOD);
break;
}
}
int main()
{
PortInit(GPIO_PORTF_BASE, SYSCTL_PERIPH_GPIOF); // Initialize portf
PortInit(GPIO_PORTA_BASE, SYSCTL_PERIPH_GPIOA); // Initialize porta
__asm("CPSID I"); // Disable all interrupts
TimerInit(TIMER0_BASE, Timer0_Handler, SYSCTL_PERIPH_TIMER0, period_1); // Intialize Timer0 with period_1
TimerInit(TIMER1_BASE, Timer1_Handler, SYSCTL_PERIPH_TIMER1, period_2); // Intialize Timer1 with period_2
__asm("CPSIE I"); // Enable all interrupts
while(1) {
__asm("wfi"); // power saving mode
}
}
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