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/**
* @file dac.hpp
* @brief Manages signal creation using the DAC.
*
* Copyright (C) 2023 Clyne Sullivan
*
* Distributed under the GNU GPL v3 or later. You should have received a copy of
* the GNU General Public License along with this program.
* If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef STMDSP_DAC_HPP_
#define STMDSP_DAC_HPP_
#include "hal.h"
#undef DAC
class DAC
{
public:
/**
* Initializes DAC output pins and peripheral.
*/
static void begin();
/**
* Begins continuous DAC conversion on the given channel, running at the
* current SClock sampling rate.
* @param channel Selected output channel (0 = sig. out, 1 = sig. gen.).
* @param buffer Buffer of sample data to output.
* @param count Number of samples in sample buffer.
*/
static void start(int channel, dacsample_t *buffer, size_t count);
/**
* Stops DAC conversion on the given channel.
*/
static void stop(int channel);
/**
* Determines if signal generator needs more sample data for streamed
* output (i.e. audio file streaming).
* @return >0 if samples needed, <0 on initial run.
*/
static int sigGenWantsMore();
/**
* Returns true if signal generator is currently running.
*/
static int isSigGenRunning();
private:
static DACDriver *m_driver[2];
static const DACConfig m_config;
static const DACConversionGroup m_group_config;
};
#endif // STMDSP_DAC_HPP_
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