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