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Group21_Lab5
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This commit is contained in:
Sanyog Nevase Nevase 2024-09-20 21:50:30 +05:30
parent 896914490e
commit 7169a51106
1 changed files with 15 additions and 9 deletions
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24
main.c
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@ -1,3 +1,9 @@
/*
Problem Statement:
Write a program where the press of a switch is detected by a GPIO interrupt. On each button press the interrupt handler should toggle the state of RED LED.
*/
#include <stdint.h>
#include <stdbool.h>
#include "tm4c123gh6pm.h"
@ -18,10 +24,10 @@ void GPIO_PORT_F_init(void)
GPIO_PORTF_PUR_R = 0x11; // PORTF PF0 and PF4 IS PULLED UP
NVIC_EN0_R |= 1 << 30;
GPIO_PORTF_IS_R = 0x00; // Make it edge-sensitive
GPIO_PORTF_IBE_R = 0x00; // Trigger on one edge
GPIO_PORTF_IEV_R = 0x00; // Falling edge event
GPIO_PORTF_IM_R |= 0x11; // Unmask interrupts for PF0 and PF4
GPIO_PORTF_IS_R = 0x00; // INTERRUPT SENSE EDGE SENSITIVE
GPIO_PORTF_IBE_R = 0x00; // INTERRUPT GENERATION IS CONTROLLED BY THE GPIO INTERRUPT EVENT
GPIO_PORTF_IEV_R = 0x00; // INTERRUPT EVENT FALLING EDGE
GPIO_PORTF_IM_R |= 0x11; // INTERRUPT MASK ENABLE FOR SWITCH1 AND SWITCH2
}
void systick_setting(void) // SYSTICK SETUP FUNCTION
{
@ -30,7 +36,7 @@ void systick_setting(void) // SYSTICK SETUP FUNCTION
STCURRENT = 0; // Clear current value
}
void delay(int us) //DEFINING DELAY FUNCTION
void delay(int us) // DEFINING DELAY FUNCTION
{
STRELOAD = SYSTICK_RELOAD_VALUE(us); // RELOAD VALUE FOR REQUIRED DELAY
STCURRENT = 0; // Clear STCURRENT
@ -44,14 +50,14 @@ void GPIOF_interruptHandler(void) // Interrupt handler for GPIO Port
delay(200000); // DEBOUNCE DELAY
if (GPIO_PORTF_RIS_R & 0x10) // CHECK IF SWITCH 1 CAUSED INTERRUPT
{
GPIO_PORTF_DATA_R ^= 0x02; // TOGGLE RED LED
GPIO_PORTF_ICR_R = 0x10; // CLEAR INTERRUPT FLAG FOR SWITCH 1
GPIO_PORTF_DATA_R ^= 0x02; // TOGGLE RED LED
GPIO_PORTF_ICR_R = 0x10; // CLEAR INTERRUPT FLAG FOR SWITCH 1
}
if (GPIO_PORTF_RIS_R & 0x01) // CHECK IF SWITCH 2 CAUSED INTERRUPT
{
GPIO_PORTF_DATA_R ^= 0x02; // TOGGLE RED LED
GPIO_PORTF_ICR_R = 0x01; // CLEAR INTERRUPT FLAG FOR SWITCH 1
GPIO_PORTF_DATA_R ^= 0x02; // TOGGLE RED LED
GPIO_PORTF_ICR_R = 0x01; // CLEAR INTERRUPT FLAG FOR SWITCH 1
}
}