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Group21_Lab07
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This commit is contained in:
Sanyog Nevase Nevase 2024-10-10 20:27:33 +05:30
parent 73455674fa
commit b5e4501940
1 changed files with 44 additions and 53 deletions
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97
main.c
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@ -12,122 +12,113 @@ void GPIO_PORT_F_init(void)
GPIO_PORTF_PUR_R = 0x11; // PORTF PF0 and PF4 IS PULLED UP
NVIC_EN0_R |= 1 << 30;
GPIO_PORTF_IS_R = 0x00; // Make it edge-sensitive
GPIO_PORTF_IBE_R = 0x00; // Trigger on one edge
GPIO_PORTF_IS_R = 0x00; // Make it edge-sensitive
GPIO_PORTF_IBE_R = 0x00; // Trigger on one edge
GPIO_PORTF_IEV_R = 0x00; // Falling edge event
GPIO_PORTF_IM_R |= 0x11; // Unmask interrupts for PF0 and PF4
GPIO_PORTF_IM_R |= 0x11; // Unmask interrupts for PF0 and PF4
}
void GPIO_PORT_B_init(void)
{
SYSCTL_RCGCGPIO_R |= 0x02; // Enable clock to GPIOB
SYSCTL_RCGCUART_R |= 0x02; // Enable UART1 clock
SYSCTL_RCGCGPIO_R |= 0x02; // Enable clock to GPIOB
SYSCTL_RCGCUART_R |= 0x02; // Enable UART1 clock
GPIO_PORTB_DEN_R |= 0x03; // Enable PB0, PB1 as digital
GPIO_PORTB_AFSEL_R |= 0x03; // Enable alternate function on PB0, PB1
GPIO_PORTB_DEN_R |= 0x03; // Enable PB0, PB1 as digital
GPIO_PORTB_AFSEL_R |= 0x03; // Enable alternate function on PB0, PB1
GPIO_PORTB_PCTL_R = (GPIO_PORTB_PCTL_R & 0xFFFFFF00) | 0x00000011; // Set PB0, PB1 for UART
GPIO_PORTB_PCTL_R = (GPIO_PORTB_PCTL_R & 0xFFFFFF00) | 0x00000011; // Set PB0, PB1 for UART
UART1_CTL_R &= ~0x01; // Disable UART1 during setup
UART1_IBRD_R = 104; // Set integer part of baud rate (for 9600 baud at 16 MHz clock)
UART1_FBRD_R = 11; // Set fractional part of baud rate
UART1_LCRH_R = 0x62; // 8-bit, odd parity, 1 stop bit
UART1_CC_R = 0x00; // Use system clock
UART1_CTL_R &= ~0x01; // Disable UART1 during setup
UART1_IBRD_R = 104; // Set integer part of baud rate (for 9600 baud at 16 MHz clock)
UART1_FBRD_R = 11; // Set fractional part of baud rate
UART1_LCRH_R = 0x62; // 8-bit, odd parity, 1 stop bit
UART1_CC_R = 0x00; // Use system clock
UART1_CTL_R |= 0x301; // Enable UART1, RX, and TX
UART1_CTL_R |= 0x301; // Enable UART1, RX, and TX
}
void UART1_WRITE(char data)
{
while (UART1_FR_R & 0x20); // Wait until TX FIFO is not full
UART1_DR_R = data; // Write data to UART data register
while (UART1_FR_R & 0x20); // Wait until TX FIFO is not full
UART1_DR_R = data; // Write data to UART data register
}
char UART1_READ(void)
{
while (UART1_FR_R & 0x10); // Wait until RX FIFO is not empty
return (char)UART1_DR_R; // Return received data
while (UART1_FR_R & 0x10); // Wait until RX FIFO is not empty
return (char)UART1_DR_R; // Return received data
}
#define STCTRL *((volatile uint32_t *) 0xE000E010) // control and status
#define STRELOAD *((volatile uint32_t *) 0xE000E014) // reload value
#define STCURRENT *((volatile uint32_t *) 0xE000E018) // current value
#define CLOCK_HZ 16000000 // CLOCK FREQUENCY OF EK-TM4C123GXL
#define CLOCK_HZ 16000000 // CLOCK FREQUENCY
#define SYSTICK_RELOAD_VALUE(us) ((CLOCK_HZ / 1000000) * (us) - 1) // SYSTICK RELOAD VALUE
void systick_setting(void) // SYSTICK SETUP FUNCTION
void systick_setting(void) // SYSTICK SETUP FUNCTION
{
STRELOAD = SYSTICK_RELOAD_VALUE(1000); // RELOAD VALUE FOR 1ms
STCTRL |= (1 << 0) | (1 << 2); // Enable SysTick with system clock
STCURRENT = 0; // Clear current value
STRELOAD = SYSTICK_RELOAD_VALUE(1000); // RELOAD VALUE FOR 1ms
STCTRL |= (1 << 0) | (1 << 2); // Enable SysTick with system clock
STCURRENT = 0; // Clear current value
}
void delay(int us) //DEFINING DELAY FUNCTION
void delay(int us) // DEFINING DELAY FUNCTION
{
STRELOAD = SYSTICK_RELOAD_VALUE(us); // RELOAD VALUE FOR REQUIRED DELAY
STCURRENT = 0; // Clear STCURRENT
STCTRL |= (1 << 0) | (1 << 2); // Enable SysTick
while ((STCTRL & (1 << 16)) == 0); // Wait until flag is set
STCTRL &= 0x0; // Stop the timer
STRELOAD = SYSTICK_RELOAD_VALUE(us); // RELOAD VALUE FOR REQUIRED DELAY
STCURRENT = 0; // Clear STCURRENT
STCTRL |= (1 << 0) | (1 << 2); // Enable SysTick
while ((STCTRL & (1 << 16)) == 0); // Wait until flag is set
STCTRL &= 0x0; // Stop the timer
}
void STATUS_LED(char received_data)
{
if (received_data == 0xAA)
{
GPIO_PORTF_DATA_R |= 0x08; // Turn on Green LED (PF3)
GPIO_PORTF_DATA_R &= ~0x04; // Turn off Blue LED (PF2)
GPIO_PORTF_DATA_R |= 0x08; // Turn on Green LED (PF3)
GPIO_PORTF_DATA_R &= ~0x04; // Turn off Blue LED (PF2)
}
else if (received_data == 0xF0)
{
GPIO_PORTF_DATA_R |= 0x04; // Turn on Blue LED (PF2)
GPIO_PORTF_DATA_R &= ~0x08; // Turn off Green LED (PF3)
GPIO_PORTF_DATA_R |= 0x04; // Turn on Blue LED (PF2)
GPIO_PORTF_DATA_R &= ~0x08; // Turn off Green LED (PF3)
}
else
{
GPIO_PORTF_DATA_R |= 0x02;
}
//delay(500000);
//GPIO_PORTF_DATA_R &= 0x00; // Turn on Green LED (PF3)
}
void GPIOF_interruptHandler(void) // Interrupt handler for GPIO Port F
void GPIOF_interruptHandler(void) // Interrupt handler for GPIO Port F
{
//delay(200000); // Debounce delay
// Check PF4 (Switch 2)
if (GPIO_PORTF_RIS_R & 0x10) // Check if PF4 caused the interrupt
if (GPIO_PORTF_RIS_R & 0x10) // Check if PF4 caused the interrupt
{
//GPIO_PORTF_DATA_R |= 0x02; // Toggle RED LED (PF1)
//delay(500000);
UART1_WRITE(0xF0);
STATUS_LED(UART1_READ());
//GPIO_PORTF_DATA_R = 0x00; // Toggle RED LED (PF1)
GPIO_PORTF_ICR_R = 0x10; // Clear interrupt flag for PF4
GPIO_PORTF_ICR_R = 0x10; // Clear interrupt flag for PF4
}
// Check PF0 (Switch 1)
if (GPIO_PORTF_RIS_R & 0x01) // Check if PF0 caused the interrupt
if (GPIO_PORTF_RIS_R & 0x01) // Check if PF0 caused the interrupt
{
//GPIO_PORTF_DATA_R |= 0x04; // Toggle RED LED (PF1)
//delay(500000);
UART1_WRITE(0xAA);
//GPIO_PORTF_DATA_R = 0x00;
STATUS_LED(UART1_READ());
GPIO_PORTF_ICR_R = 0x01; // Clear interrupt flag for PF0
GPIO_PORTF_ICR_R = 0x01; // Clear interrupt flag for PF0
}
}
int main(void) // MAIN FUNCTION
int main(void) // MAIN FUNCTION
{
GPIO_PORT_F_init(); // GPIO INITIALISATION FUNCTION
GPIO_PORT_F_init(); // GPIO INITIALISATION FUNCTION
GPIO_PORT_B_init();
systick_setting(); // SYSTICK SETUP
systick_setting(); // SYSTICK SETUP
while (1)
{
STATUS_LED(UART1_READ());