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Group21_Lab07
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UPDATE COMMENTS

This commit is contained in:
Sanyog Nevase Nevase 2024-10-10 22:26:18 +05:30
parent 8c4a905bf9
commit 1164bce4dc
1 changed files with 19 additions and 21 deletions
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40
main.c
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@ -12,24 +12,24 @@ 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_IEV_R = 0x00; // Falling edge event
GPIO_PORTF_IM_R |= 0x11; // Unmask interrupts for PF0 and PF4
GPIO_PORTF_IS_R = 0x00; // EDGE SENSITIVE
GPIO_PORTF_IBE_R = 0x00; // ONE EDGE
GPIO_PORTF_IEV_R = 0x00; // INTERRUPT EVENT FALLING
GPIO_PORTF_IM_R |= 0x11; // UNMASK INTERRUPT
}
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 FOR GPIOB
SYSCTL_RCGCUART_R |= 0x02; // ENABLE CLOCK FOR UART1
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; // DIGITAL ENABLE FOR PB0 AND PB1
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
UART1_CTL_R &= ~0x01; // Disable UART1 during setup
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
@ -80,17 +80,17 @@ 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;
GPIO_PORTF_DATA_R |= 0x02; // RED LED FOR JUNK DATA
}
}
@ -98,17 +98,15 @@ void STATUS_LED(char received_data)
void GPIOF_interruptHandler(void) // Interrupt handler for GPIO Port F
{
if (GPIO_PORTF_RIS_R & 0x10) // Check if PF4 caused the interrupt
if (GPIO_PORTF_RIS_R & 0x10) // SWITCH1 PRESS
{
UART1_WRITE(0xF0);
STATUS_LED(UART1_READ());
UART1_WRITE(0xF0); // WRITE DATA ON UART1
GPIO_PORTF_ICR_R = 0x10; // Clear interrupt flag for PF4
}
if (GPIO_PORTF_RIS_R & 0x01) // Check if PF0 caused the interrupt
if (GPIO_PORTF_RIS_R & 0x01) // SWITCH2 PRESS
{
UART1_WRITE(0xAA);
STATUS_LED(UART1_READ());
UART1_WRITE(0xAA); // WRITE DATA ON UART1
GPIO_PORTF_ICR_R = 0x01; // Clear interrupt flag for PF0
}
}
@ -121,7 +119,7 @@ int main(void) // MAIN FUNCTION
systick_setting(); // SYSTICK SETUP
while (1)
{
STATUS_LED(UART1_READ());
STATUS_LED(UART1_READ()); // STATUS LED
}
}