40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
#include <stdint.h>
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#include <stdbool.h>
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#include "tm4c123gh6pm.h"
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int main(void)
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{
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SYSCTL_RCGC2_R |= 0x00000020; /* enable clock to GPIOF */
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GPIO_PORTF_LOCK_R = 0x4C4F434B; /* unlock commit register */
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GPIO_PORTF_CR_R = 0x11; /* make PORTF0 PORTF4 CONFIGURABLE*/
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GPIO_PORTF_DEN_R = 0x1F; /* set PORTF pins 5 pins*/
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GPIO_PORTF_DIR_R = 0x0E; /* set PORTF0 PORTF4 pin as input user switch pin */
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GPIO_PORTF_PUR_R = 0x11; /* PORTF4 PORT0 is pulled up */
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NVIC_EN0_R |= (1<<30); //Starting NVIC as all the interrupt goes through it
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GPIO_PORTF_IM_R = 0x00; /*Masking the ports*/
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GPIO_PORTF_IS_R = 0x00;
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GPIO_PORTF_IBE_R = 0x00;
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GPIO_PORTF_IEV_R = 0x00; /*detects the falling edge of the switch*/
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GPIO_PORTF_ICR_R = 0x11;
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GPIO_PORTF_IM_R = 0x11;
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while(1)
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{
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//GPIO_PORTF_DATA_R = 0x02;
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}
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}
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void GPIOIntHandler(void)
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{
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int i=0;
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for(i=0;i<1000;i++);
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if((GPIO_PORTF_DATA_R & 0x11)== 0x11){}
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else
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{
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GPIO_PORTF_DATA_R ^= 0x02;
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}
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GPIO_PORTF_ICR_R = 0x11;
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}
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