2024-09-22 19:49:27 +05:30
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#include <stdint.h>
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#include <stdbool.h>
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2024-09-22 19:50:13 +05:30
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#include "tm4c123gh6pm.h"
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// Global Variables
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volatile int duty = 50; // Initial duty cycle
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volatile bool buttonPressed = false; // Track button state
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volatile uint32_t pressDuration = 0; // Track how long the button is pressed
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const long int PWM_PERIOD = 1000000; // Period for 100kHz in microseconds (10ms)
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2024-09-22 19:50:42 +05:30
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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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