DAC.c

// dac.c
// This software configures DAC output
// Runs on LM4F120 or TM4C123
// Program written by: put your names here
// Date Created: 3/6/17 
// Last Modified: 3/6/17 
// Lab number: 6
// Hardware connections
// PB0-PB5 are all outputs, with PB5 as the most siggnificant  

#include <stdint.h>
#include "tm4c123gh6pm.h"
// Code files contain the actual implemenation for public functions
// this file also contains an private functions and private data

// **************DAC_Init*********************
// Initialize 6-bit DAC, called once 
// Input: none
// Output: none
void DAC_Init(void){
	SYSCTL_RCGCGPIO_R |= 0x02;	
	volatile uint8_t delay = 4;
	delay = 3;
	GPIO_PORTB_DIR_R |= 0x3F;
	GPIO_PORTB_AFSEL_R = 0;
	GPIO_PORTB_DEN_R |= 0x3F;
}

// **************DAC_Out*********************
// output to DAC
// Input: 6-bit data, 0 to 63
// Output: none
void DAC_Out(uint32_t data){
	GPIO_PORTB_DATA_R = data;
}