29 lines
841 B
C
29 lines
841 B
C
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#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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GPIO_PORTF_IEV_R = 0x00; /*detects the falling edge of the switch*/
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switch(z)
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{
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case 0: GPIO_PORTF_DATA_R = 0x02;
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break;
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case 1:GPIO_PORTF_DATA_R = 0x00;
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break;
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default:GPIO_PORTF_DATA_R = 0x04
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break;
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}
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}
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