~aleteoryx/muditaos

ref: 43c27e744160bbed7ebbd34c1b41a9eccb1303ba muditaos/module-bsp/board/rt1051/puretx/audio.cpp -rw-r--r-- 2.5 KiB
43c27e74 — Tomasz Rybarski [BH-1252] Alarm Activated Behaviour Change 4 years ago 
                                                                                
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// Copyright (c) 2017-2021, Mudita Sp. z.o.o. All rights reserved.
// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md

#include "audio.hpp"

#include "board/BoardDefinitions.hpp"

extern "C"
{
#include "board.h"
#include "dma_config.h"
}

using namespace bsp::audio;
using namespace drivers;

bsp::audio::AudioConfig audioConfig;

void bsp::audio::init()
{
    audioConfig.pllAudio =
        DriverPLL::Create(static_cast<PLLInstances>(BoardDefinitions ::AUDIO_PLL), DriverPLLParams{});
    audioConfig.dmamux =
        DriverDMAMux::Create(static_cast<DMAMuxInstances>(BoardDefinitions ::AUDIOCODEC_DMAMUX), DriverDMAMuxParams{});
    audioConfig.dma =
        DriverDMA::Create(static_cast<DMAInstances>(BoardDefinitions ::AUDIOCODEC_DMA), DriverDMAParams{});

    // Enable MCLK clock
    IOMUXC_GPR->GPR1 |= BOARD_AUDIOCODEC_SAIx_MCLK_MASK;

    audioConfig.txDMAHandle =
        audioConfig.dma->CreateHandle(static_cast<uint32_t>(BoardDefinitions ::AUDIOCODEC_TX_DMA_CHANNEL));
    audioConfig.rxDMAHandle =
        audioConfig.dma->CreateHandle(static_cast<uint32_t>(BoardDefinitions ::AUDIOCODEC_RX_DMA_CHANNEL));
    audioConfig.dmamux->Enable(static_cast<uint32_t>(BoardDefinitions ::AUDIOCODEC_TX_DMA_CHANNEL),
                               BSP_AUDIOCODEC_SAIx_DMA_TX_SOURCE);
    audioConfig.dmamux->Enable(static_cast<uint32_t>(BoardDefinitions ::AUDIOCODEC_RX_DMA_CHANNEL),
                               BSP_AUDIOCODEC_SAIx_DMA_RX_SOURCE);

    audioConfig.mclkSourceClockHz = GetPerphSourceClock(PerphClock_SAI2);

    // Initialize SAI Tx module
    SAI_TxGetDefaultConfig(&audioConfig.config);
    audioConfig.config.masterSlave = kSAI_Slave;
    SAI_TxInit(BOARD_AUDIOCODEC_SAIx, &audioConfig.config);

    // Initialize SAI Rx module
    SAI_RxGetDefaultConfig(&audioConfig.config);

    audioConfig.config.masterSlave = kSAI_Slave;
    SAI_RxInit(BOARD_AUDIOCODEC_SAIx, &audioConfig.config);
}

void bsp::audio::deinit()
{
    memset(&audioConfig.config, 0, sizeof(audioConfig.config));
    SAI_Deinit(BOARD_AUDIOCODEC_SAIx);
    if (audioConfig.dmamux) {
        audioConfig.dmamux->Disable(static_cast<uint32_t>(BoardDefinitions ::AUDIOCODEC_TX_DMA_CHANNEL));
        audioConfig.dmamux->Disable(static_cast<uint32_t>(BoardDefinitions ::AUDIOCODEC_RX_DMA_CHANNEL));
    }

    // force order of destruction
    audioConfig.txDMAHandle.reset();
    audioConfig.rxDMAHandle.reset();
    audioConfig.dma.reset();
    audioConfig.dmamux.reset();
    audioConfig.pllAudio.reset();
}

AudioConfig *AudioConfig::get()
{
    return &audioConfig;
}