dac.h
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	#ifndef __DAC_H
	#define __DAC_H

	#include "../main.h"

	#define DAC1_Pin GPIO_Pin_4
	#define DAC2_Pin GPIO_Pin_5
	#define DAC_Port GPIOA

	#define DAC_FINAL_RANGE 9.0f // -9 to 9V after the op-amp.
	#define DAC_MAX 4095 // 12-bits.

	/** @defgroup DAC Driver / DAC
	* @brief Driver for the digital-to-analog converter.
	*
	* The STM32 features a two channels DAC, which means it is able to drive two
	* pins with an analog voltage. On the HRI board, this voltage is mulltiplied
	* by an amplification stage, so the final output range is +-9V. The
	* corresponding output pins are on the J1 connector: ANOUT1 (2) and ANOUT2 (4).
	*
	* In the initialization code, call dac_Init() once. Then call
	* dac_GetVoltageX() everytime the output voltage needs to be updated.
	*
	* @addtogroup DAC
	* @{
	*/

	void dac_Init(void);
	void dac_SetVoltage1(float32_t voltage);
	void dac_SetVoltage2(float32_t voltage);
	float32_t dac_GetVoltage1(void);
	float32_t dac_GetVoltage2(void);

	/**
	* @}
	*/

	#endif