boards/evkmimx8mq/driver_examples/sai/interrupt_transfer/sai_interrupt_transfer.c

/*
 * Copyright (c) 2016, Freescale Semiconductor, Inc.
 * Copyright 2016-2020 NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include "board.h"
#include "fsl_debug_console.h"
#include "fsl_sai.h"
#include "music.h"
#include "fsl_codec_common.h"

#include "fsl_wm8524.h"
#include "pin_mux.h"
#include "clock_config.h"
#include "fsl_common.h"
#include "fsl_gpio.h"
#include "fsl_codec_adapter.h"
/*******************************************************************************
 * Definitions
 ******************************************************************************/
#define DEMO_SAI         (I2S2)
#define DEMO_SAI_CHANNEL (0)
#define DEMO_SAI_CLK_FREQ                                                                  \
    CLOCK_GetPllFreq(kCLOCK_SystemPll1Ctrl) / (CLOCK_GetRootPreDivider(kCLOCK_RootSai2)) / \
        (CLOCK_GetRootPostDivider(kCLOCK_RootSai2)) / 6
#define DEMO_CODEC_WM8524       (1)
#define CODEC_USEGPIO           (1)
#define DEMO_CODEC_BUS_PIN      (NULL)
#define DEMO_CODEC_BUS_PIN_NUM  (0)
#define DEMO_CODEC_MUTE_PIN     (GPIO1)
#define DEMO_CODEC_MUTE_PIN_NUM (8)

#define DEMO_SAI_TX_SYNC_MODE kSAI_ModeAsync
#define DEMO_SAI_RX_SYNC_MODE kSAI_ModeSync
#define DEMO_SAI_MCLK_OUTPUT  true
#define DEMO_SAI_MASTER_SLAVE kSAI_Master

#define DEMO_AUDIO_DATA_CHANNEL (2U)
#define DEMO_AUDIO_BIT_WIDTH    kSAI_WordWidth16bits
#define DEMO_AUDIO_SAMPLE_RATE  (kSAI_SampleRate16KHz)
#define DEMO_AUDIO_MASTER_CLOCK DEMO_SAI_CLK_FREQ

#define BOARD_MASTER_CLOCK_CONFIG()
#define BOARD_SAI_RXCONFIG(config, mode)

/*******************************************************************************
 * Prototypes
 ******************************************************************************/
void BOARD_WM8524_Mute_GPIO(uint32_t output);
extern void BOARD_SAI_RXConfig(sai_transceiver_t *config, sai_sync_mode_t sync);
/*******************************************************************************
 * Variables
 ******************************************************************************/
static wm8524_config_t wm8524Config = {
    .setMute     = BOARD_WM8524_Mute_GPIO,
    .setProtocol = NULL,
    .protocol    = kWM8524_ProtocolI2S,
};
codec_config_t boardCodecConfig = {.codecDevType = kCODEC_WM8524, .codecDevConfig = &wm8524Config};

sai_handle_t txHandle           = {0};
static volatile bool isFinished = false;
extern codec_config_t boardCodecConfig;
codec_handle_t codecHandle;

/*******************************************************************************
 * Code
 ******************************************************************************/

void BOARD_WM8524_Mute_GPIO(uint32_t output)
{
    GPIO_PinWrite(DEMO_CODEC_MUTE_PIN, DEMO_CODEC_MUTE_PIN_NUM, output);
}

static void callback(I2S_Type *base, sai_handle_t *handle, status_t status, void *userData)
{
    isFinished = true;
}

/*!
 * @brief Main function
 */
int main(void)
{
    sai_transfer_t xfer;
    uint32_t temp = 0;
    sai_transceiver_t config;

    /* Board specific RDC settings */
    BOARD_RdcInit();

    BOARD_InitPins();
    BOARD_BootClockRUN();
    BOARD_InitDebugConsole();
    BOARD_InitMemory();

    CLOCK_SetRootMux(kCLOCK_RootSai2, kCLOCK_SaiRootmuxSysPll1Div6); /* Set SAI source to SYS PLL1 Div6 133MHZ */
    CLOCK_SetRootDivider(kCLOCK_RootSai2, 1U, 3U);                   /* Set root clock to 133MHZ / 3 = 44MHZ */

    /* gpio initialization */
    gpio_pin_config_t gpioConfig = {kGPIO_DigitalOutput, 1};
    GPIO_PinInit(DEMO_CODEC_MUTE_PIN, DEMO_CODEC_MUTE_PIN_NUM, &gpioConfig);

    PRINTF("SAI example started!\n\r");

    /* SAI init */
    SAI_Init(DEMO_SAI);
    SAI_TransferTxCreateHandle(DEMO_SAI, &txHandle, callback, NULL);
    /* I2S mode configurations */
    SAI_GetClassicI2SConfig(&config, DEMO_AUDIO_BIT_WIDTH, kSAI_Stereo, 1U << DEMO_SAI_CHANNEL);
    config.syncMode    = DEMO_SAI_TX_SYNC_MODE;
    config.masterSlave = DEMO_SAI_MASTER_SLAVE;
    SAI_TransferTxSetConfig(DEMO_SAI, &txHandle, &config);

    /* set bit clock divider */
    SAI_TxSetBitClockRate(DEMO_SAI, DEMO_AUDIO_MASTER_CLOCK, DEMO_AUDIO_SAMPLE_RATE, DEMO_AUDIO_BIT_WIDTH,
                          DEMO_AUDIO_DATA_CHANNEL);
    /* sai rx configurations */
    BOARD_SAI_RXCONFIG(&config, DEMO_SAI_RX_SYNC_MODE);
    /* master clock configurations */
    BOARD_MASTER_CLOCK_CONFIG();

    /* Use default setting to init codec */
    CODEC_Init(&codecHandle, &boardCodecConfig);

    /*  xfer structure */
    temp          = (uint32_t)music;
    xfer.data     = (uint8_t *)temp;
    xfer.dataSize = MUSIC_LEN;
    SAI_TransferSendNonBlocking(DEMO_SAI, &txHandle, &xfer);
    /* Wait until finished */
    while (isFinished != true)
    {
    }

    PRINTF("\n\r SAI example finished!\n\r ");
    while (1)
    {
    }
}