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02ecb48514
commit
62519ab055
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@ -16,4 +16,14 @@ void GPIO_PORT_F_init(void)
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GPIO_PORTF_IBE_R = 0x00; // Trigger on one edge
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GPIO_PORTF_IEV_R = 0x00; // Falling edge event
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GPIO_PORTF_IM_R |= 0x11; // Unmask interrupts for PF0 and PF4
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}
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}
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#define STCTRL *((volatile uint32_t *) 0xE000E010) // Control and status
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#define STRELOAD *((volatile uint32_t *) 0xE000E014) // Reload value
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#define STCURRENT *((volatile uint32_t *) 0xE000E018) // Current value
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#define COUNT_FLAG (1 << 16) // Bit 16 of CSR automatically set to 1
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#define ENABLE (1 << 0) // Bit 0 of CSR to enable the timer
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#define CLKINT (1 << 2) // Bit 2 of CSR to specify CPU clock
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#define CLOCK_HZ 16000000 // Clock frequency of EK-TM4C123GXL
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#define INTEN (1 << 1) // Bit 1 of CSR to enable interrupt
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#define SYSTICK_RELOAD_VALUE(us) ((CLOCK_HZ / 1000000) * (us) - 1) // SysTick reload value in microseconds based on clock frequency
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