69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
#include <stdint.h>
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#include "tm4c123gh6pm.h"
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#define ZERO_DEF 0
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/**
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* main.c
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*/
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void counter_loop (void);
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void GPIO_PORTF_Init(void);
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int main(void)
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/*
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* GPIODATA ->> 0xE
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* GPIODIR ->> COnfigure each pin as I/P or O/P >> <0000 1110> = 0xE
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* GPIOPCTL
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GPIOSLR -- Slew Rate Control
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x GPIOPUR -- Pull Up Enable -- 0x11
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x GPIOPDR -- Pull Down Enable
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x GPIOODR -- OpenDrain
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x GPIODEN -- GPIO Digital Enable -- 0x00011111 >> 0x1F
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*/
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{
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GPIO_PORTF_Init();
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register uint32_t x = ZERO_DEF;
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GPIO_PORTF_DATA_R = 0x4;
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// while(1)
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// {
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// GPIO_PORTF_DATA_R = 0x0;
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// GPIO_PORTF_DATA_R = 0x2;
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// GPIO_PORTF_DATA_R = 0x4;
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// GPIO_PORTF_DATA_R = 0x8;
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// GPIO_PORTF_DATA_R = 0xE;
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// }
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while (1)
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{
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x++;
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counter_loop();
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GPIO_PORTF_DATA_R ^= 0x2;
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}
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}
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void GPIO_PORTF_Init(void)
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{
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SYSCTL_RCGC2_R |= SYSCTL_RCGC2_GPIOF;
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GPIO_PORTF_DEN_R = 0x1F;
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GPIO_PORTF_PUR_R = 0x11;
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GPIO_PORTF_DIR_R = 0x0E;
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}
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void counter_loop (void)
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{
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uint32_t count = 0xFFFFFF;
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while(count>0)
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count--;
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}
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