42 lines
1.7 KiB
C
42 lines
1.7 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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}
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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
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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 rate (for 9600 baud at 16 MHz clock)
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UART1_FBRD_R = 11; // Set fractional part of baud rate
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UART1_LCRH_R = 0x60; // 8-bit, No parity, 1 stop bit
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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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}
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char UART1_READ(void)
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{
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while (UART1_FR_R & 0x10); // Wait until RX FIFO is not empty
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return (char)UART1_DR_R; // Return received data
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}
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