40 lines
1.8 KiB
C
40 lines
1.8 KiB
C
#include <stdint.h>
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#include <stdbool.h>
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#include "tm4c123gh6pm.h"
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void GPIO_PORT_F_init(void)
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{
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SYSCTL_RCGC2_R |= 0x00000020; // ENABLE CLOCK TO GPIOF
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GPIO_PORTF_LOCK_R = 0x4C4F434B; // UNLOCK COMMIT REGISTER
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GPIO_PORTF_CR_R = 0x1F; // MAKE PORTF0 CONFIGURABLE
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GPIO_PORTF_DEN_R = 0x1F; // SET PORTF DIGITAL ENABLE
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GPIO_PORTF_DIR_R = 0x0E; // SET PF0, PF4 as input and PF1, PF2 and PF3 as output
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GPIO_PORTF_PUR_R = 0x11; // PORTF PF0 and PF4 IS PULLED UP
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NVIC_EN0_R |= 1 << 30;
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GPIO_PORTF_IS_R = 0x00; // EDGE SENSITIVE
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GPIO_PORTF_IBE_R = 0x00; // ONE EDGE
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GPIO_PORTF_IEV_R = 0x00; // INTERRUPT EVENT FALLING
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GPIO_PORTF_IM_R |= 0x11; // UNMASK INTERRUPT
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}
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void GPIO_PORT_B_init(void)
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{
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SYSCTL_RCGCGPIO_R |= 0x02; // ENABLE CLOCK FOR GPIOB
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SYSCTL_RCGCUART_R |= 0x02; // ENABLE CLOCK FOR UART1
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GPIO_PORTB_DEN_R |= 0x03; // DIGITAL ENABLE FOR PB0 AND PB1
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GPIO_PORTB_AFSEL_R |= 0x03; // ENABLE ALTERNATE FUNCTION ON PB0,PB1
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GPIO_PORTB_PCTL_R = (GPIO_PORTB_PCTL_R & 0xFFFFFF00) | 0x00000011; // SET PB0, PB1 FOR UART FUNCTIONALITY
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UART1_CTL_R &= ~0x01; // DISABLE UART1 DURING SETUP
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UART1_IBRD_R = 104; // SET INTEGER PART OF BAUD RED FOR 9600 BAUD FORMULA:
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UART1_FBRD_R = 11; // SET FRACTIONAL PART OF BAUD RATE
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UART1_LCRH_R = 0x62; // SET 8-BIT, ODD PARITY, STOP BIT-1
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UART1_CC_R = 0x00; // USE SYSTEM CLOCK
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UART1_CTL_R |= 0x301; // ENABLE UART1, RX AND TX
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} |