diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 91 |
1 files changed, 43 insertions, 48 deletions
@@ -1,67 +1,62 @@ -#include "color.h"
-#include "stdio.h"
-#include <stdint.h>
-
-int cnt = 1;
-#define GREEN_PERIOD 80000000
-#define YELLOW_PERIOD 48000000
-#define RED_PERIOD 16000000
-uint8_t cur_color = GREEN;
-uint32_t period = GREEN_PERIOD;
-
-
+#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) {
- case RED:
- cur_color = GREEN;
- set_color(cur_color);
+ 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:
- cur_color = RED;
- set_color(cur_color);
+ case YELLOW_TF1:
+ cur_color_1 = RED_TF1;
+ set_color(cur_color_1);
TimerLoadSet(TIMER0_BASE, TIMER_BOTH, RED_PERIOD);
break;
- case GREEN:
- cur_color = YELLOW;
- set_color(cur_color);
+ case GREEN_TF1:
+ cur_color_1 = YELLOW_TF1;
+ set_color(cur_color_1);
TimerLoadSet(TIMER0_BASE, TIMER_BOTH, YELLOW_PERIOD);
break;
}
}
-void portFInit() {
- SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
- while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOF)) {};
- GPIOUnlockPin(GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4);
- GPIOPinTypeGPIOInput(GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_4);
- GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);
- GPIOPadConfigSet (GPIO_PORTF_BASE, GPIO_PIN_0 | GPIO_PIN_4,
- GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPU);
-}
-void traffic_delay() {
- portFInit();
- reset_color();
- SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
- while(!SysCtlPeripheralReady(SYSCTL_PERIPH_TIMER0)) {}
- TimerDisable(TIMER0_BASE, TIMER_BOTH);
- TimerConfigure(TIMER0_BASE, (TIMER_CFG_PERIODIC));
- TimerLoadSet(TIMER0_BASE, TIMER_BOTH, period);
- TimerIntUnregister(TIMER0_BASE, TIMER_BOTH);
- TimerEnable(TIMER0_BASE, TIMER_BOTH);
- set_color(GREEN);
- TimerIntRegister(TIMER0_BASE, TIMER_BOTH, (*Timer0_Handler));
- TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT | TIMER_TIMB_TIMEOUT);
- while(1) {
-
+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()
{
- traffic_delay();
+ 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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