/*
MainInit routine
This routine performs the main initialisation.
*/
void MainInit(void)
{
PortInit();
Timer_Init();
IIC_Init();
UART_Init();
sei(); // Enable global interrupts
WM8960_Init();
WM8960_Init();//again
}
static rt_err_t icodec_init(struct rt_audio_device *audio)
{
sai_config_t config;
uint32_t mclkSourceClockHz = 0U;
edma_config_t dmaConfig = {0};
lpi2c_master_config_t i2cConfig = {0};
uint32_t i2cSourceClock;
clock_audio_pll_config_t audioPllConfig = {32, 1, 77, 100};
struct imxcodec *icodec = audio->parent.user_data;
sai_transfer_format_t *format;
icodec->sai = DEMO_SAI;
format = &icodec->format;
_InitPins();
CLOCK_InitAudioPll(&audioPllConfig);
/*Clock setting for LPI2C*/
CLOCK_SetMux(kCLOCK_Lpi2cMux, DEMO_LPI2C_CLOCK_SOURCE_SELECT);
CLOCK_SetDiv(kCLOCK_Lpi2cDiv, DEMO_LPI2C_CLOCK_SOURCE_DIVIDER);
/*Clock setting for SAI1*/
CLOCK_SetMux(kCLOCK_Sai1Mux, DEMO_SAI1_CLOCK_SOURCE_SELECT);
CLOCK_SetDiv(kCLOCK_Sai1PreDiv, DEMO_SAI1_CLOCK_SOURCE_PRE_DIVIDER);
CLOCK_SetDiv(kCLOCK_Sai1Div, DEMO_SAI1_CLOCK_SOURCE_DIVIDER);
/*Enable MCLK clock*/
BOARD_EnableSaiMclkOutput(true);
/* Create EDMA handle */
EDMA_GetDefaultConfig(&dmaConfig);
EDMA_Init(EXAMPLE_DMA, &dmaConfig);
EDMA_CreateHandle(&icodec->dmaHandle, EXAMPLE_DMA, EXAMPLE_CHANNEL);
DMAMUX_Init(DMAMUX0);
DMAMUX_SetSource(DMAMUX0, EXAMPLE_CHANNEL, EXAMPLE_SAI_TX_SOURCE);
DMAMUX_EnableChannel(DMAMUX0, EXAMPLE_CHANNEL);
/* Init SAI module */
SAI_TxGetDefaultConfig(&config);
config.protocol = kSAI_BusLeftJustified;
SAI_TxInit(DEMO_SAI, &config);
/* Configure the audio format */
format->bitWidth = kSAI_WordWidth16bits;
format->channel = 0U;
format->sampleRate_Hz = kSAI_SampleRate48KHz;
format->masterClockHz = DEMO_SAI_CLK_FREQ;
format->protocol = config.protocol;
format->stereo = kSAI_Stereo;
format->isFrameSyncCompact = 0;
format->watermark = FSL_FEATURE_SAI_FIFO_COUNT / 2U;
/* Configure Sgtl5000 I2C */
icodec->codecHandle.base = DEMO_I2C;
icodec->codecHandle.i2cHandle = &icodec->i2cHandle;
i2cSourceClock = DEMO_I2C_CLK_FREQ;
LPI2C_MasterGetDefaultConfig(&i2cConfig);
LPI2C_MasterInit(DEMO_I2C, &i2cConfig, i2cSourceClock);
LPI2C_MasterTransferCreateHandle(DEMO_I2C, &icodec->i2cHandle, NULL, NULL);
WM8960_Init(&icodec->codecHandle, NULL);
WM8960_ConfigDataFormat(&icodec->codecHandle, format->masterClockHz, format->sampleRate_Hz, format->bitWidth);
SAI_TransferTxCreateHandleEDMA(icodec->sai, &icodec->txHandle, saidma_callback, audio, &icodec->dmaHandle);
mclkSourceClockHz = DEMO_SAI_CLK_FREQ;
SAI_TransferTxSetFormatEDMA(icodec->sai, &icodec->txHandle, format, mclkSourceClockHz, format->masterClockHz);
return RT_EOK;
}
