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35 lines
967 B
C
35 lines
967 B
C
#include "TM4C123GH6PM.h"
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#include "bsp.h"
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int main(void) {
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SYSCTL->RCGCGPIO |= (1U << 5U); /* enable Run mode for GPIOF */
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SYSCTL->GPIOHBCTL |= (1U << 5U); /* enable AHB for GPIOF */
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#if (__ARM_FP != 0) /* if VFP available... */
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/* make sure that the FPU is enabled by seting CP10 & CP11 Full Access */
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SCB->CPACR |= ((3UL << 20U)|(3UL << 22U));
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#endif
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GPIOF_AHB->DIR |= (LED_RED | LED_BLUE | LED_GREEN);
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GPIOF_AHB->DEN |= (LED_RED | LED_BLUE | LED_GREEN);
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SysTick->LOAD = SYS_CLOCK_HZ/2U - 1U;
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SysTick->VAL = 0U;
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SysTick->CTRL = (1U << 2U) | (1U << 1U) | 1U;
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SysTick_Handler();
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__enable_irq();
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while (1) {
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GPIOF_AHB->DATA_Bits[LED_GREEN] = LED_GREEN;
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GPIOF_AHB->DATA_Bits[LED_GREEN] = 0U;
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#if (__ARM_FP != 0) /* if VFP available... */
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/* exercise the single-precision FPU */
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float x = 1.234f;
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float volatile y = x*x;
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#endif
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}
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//return 0; // unreachable code
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}
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