/**************************************************************************//**
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=895143]@version[/url] V1.00
* $Revision: 1 $
* $Date: 14/07/15 2:52p $
* [url=home.php?mod=space&uid=247401]@brief[/url] This is an I2S demo using NAU8822 audio codec, and used to play
* back the input from MIC interface..
*
* @note
* Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#include <stdio.h>
#include <string.h>
#include "ISD9100.h"
#include "config.h"
#define NAU8822_ADDR 0x1A /* NAU8822 Device ID */
//uint32_t PcmBuff[BUFF_LEN] = {0};
uint32_t volatile u32BuffPos = 0;
void Delay(int count)
{
volatile uint32_t i;
for (i = 0; i < count ; i++)
{
i=i;
}
}
/*---------------------------------------------------------------------------------------------------------*/
/* Write 9-bit data to 7-bit address register of WAU8822 with I2C0 */
/*---------------------------------------------------------------------------------------------------------*/
void I2C_WriteWAU8822(uint8_t u8addr, uint16_t u16data)
{
I2C_START(I2C0);
I2C_WAIT_READY(I2C0);
I2C_SET_DATA(I2C0, NAU8822_ADDR<<1);
I2C_SET_CONTROL_REG(I2C0, I2C_SI);
I2C_WAIT_READY(I2C0);
I2C_SET_DATA(I2C0, (uint8_t)((u8addr << 1) | (u16data >> 8)));
I2C_SET_CONTROL_REG(I2C0, I2C_SI);
I2C_WAIT_READY(I2C0);
I2C_SET_DATA(I2C0, (uint8_t)(u16data & 0x00FF));
I2C_SET_CONTROL_REG(I2C0, I2C_SI);
I2C_WAIT_READY(I2C0);
I2C_STOP(I2C0);
}
/*---------------------------------------------------------------------------------------------------------*/
/* WAU8822 Settings with I2C interface */
/*---------------------------------------------------------------------------------------------------------*/
void WAU8822_Setup()
{
printf("\nConfigure WAU8822 ...");
I2C_WriteWAU8822(0, 0x000); /* Reset all registers */
Delay(0x200);
I2C_WriteWAU8822(1, 0x1DA);
I2C_WriteWAU8822(2, 0x1BF); // Enable L/R Headphone, ADC Mix/Boost, ADC
I2C_WriteWAU8822(3, 0x1FF); // Enable L/R main mixer, DAC
I2C_WriteWAU8822(4, 0x010); // 16-bit word length, I2S format, Stereo
I2C_WriteWAU8822(5, 0x000); // Companding control and loop back mode (all disable)
I2C_WriteWAU8822(6, 0x008); // Divide by 6, 16K
I2C_WriteWAU8822(7, 0x006); // 16K for internal filter coefficients
I2C_WriteWAU8822(10, 0x008); // DAC soft mute is disabled, DAC oversampling rate is 128x
I2C_WriteWAU8822(14, 0x108); // ADC HP filter is disabled, ADC oversampling rate is 128x
I2C_WriteWAU8822(15, 0x1FF); // ADC left digital volume control
I2C_WriteWAU8822(16, 0x1FF); // ADC right digital volume control
I2C_WriteWAU8822(44, 0x033); // LMICN/LMICP is connected to PGA
I2C_WriteWAU8822(0x2d, 0x13F); /* Left PGA gain*/
I2C_WriteWAU8822(0x2e, 0x13F); /* Right PGA gain*/
I2C_WriteWAU8822(0x2f, 0x100); /* LLIN connected, and its Gain value */
I2C_WriteWAU8822(0x30, 0x100); /* RLIN connected, and its Gain value */
I2C_WriteWAU8822(50, 0x001); // Left DAC connected to LMIX
I2C_WriteWAU8822(51, 0x001); // Right DAC connected to RMIX
printf("[OK]\n");
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable External XTL32K */
CLK_EnableXtalRC(CLK_PWRCTL_LXTEN_Msk);
/* Enable External OSC49M */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Enable External OSC10K */
CLK_EnableXtalRC(CLK_PWRCTL_LIRCEN_Msk);
/* Switch HCLK clock source to HXT */
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKSEL0_HIRCFSEL_48M, CLK_CLKDIV0_HCLK(1));
/* Enable IP clock */
CLK_EnableModuleClock(UART_MODULE);
CLK_EnableModuleClock(I2C0_MODULE);
CLK_EnableModuleClock(I2S0_MODULE);
/* Select I2S module clock source */
CLK_SetModuleClock(I2S0_MODULE, CLK_CLKSEL2_I2S0SEL_HCLK, 0);
/* Reset I2S */
SYS_ResetModule(I2S0_RST);
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPA multi-function pins for UART0 RXD and TXD */
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA8MFP_Msk) ) | SYS_GPA_MFP_PA8MFP_UART_TX;
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA9MFP_Msk) ) | SYS_GPA_MFP_PA9MFP_UART_RX;
/* Set GPA10,GPA11 multi-function pins for I2C0 */
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA10MFP_Msk) ) | SYS_GPA_MFP_PA10MFP_I2C_SDA;
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA11MFP_Msk) ) | SYS_GPA_MFP_PA11MFP_I2C_SCL;
GPIO_SetMode(PA, BIT10, GPIO_MODE_OPEN_DRAIN);
GPIO_SetMode(PA, BIT11, GPIO_MODE_OPEN_DRAIN);
/* Set multi function pin for I2S1 */
/* GPA4, GPA5, GPA6, GPA7, GPB1 */
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA4MFP_Msk) ) | SYS_GPA_MFP_PA4MFP_I2S_FS;
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA5MFP_Msk) ) | SYS_GPA_MFP_PA5MFP_I2S_BCLK;
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA6MFP_Msk) ) | SYS_GPA_MFP_PA6MFP_I2S_SDI;
SYS->GPA_MFP = (SYS->GPA_MFP & (~SYS_GPA_MFP_PA7MFP_Msk) ) | SYS_GPA_MFP_PA7MFP_I2S_SDO;
SYS->GPB_MFP = (SYS->GPB_MFP & (~SYS_GPB_MFP_PB1MFP_Msk) ) | SYS_GPB_MFP_PB1MFP_MCLK;
/* Lock protected registers */
SYS_LockReg();
}
void I2C0_Init(void)
{
/* Open I2C0 and set clock to 48 */
I2C_Open(I2C0, 48000);
/* Get I2C0 Bus Clock */
printf("I2C clock %d Hz\n", I2C_GetBusClockFreq(I2C0));
/* Set I2C0 4 Slave Addresses */
//I2C_SetSlaveAddr(I2C0, 0, 0x15, I2C_GCMODE_DISABLE); /* Slave Address : 0x15 */
//I2C_SetSlaveAddr(I2C0, 1, 0x35, I2C_GCMODE_DISABLE); /* Slave Address : 0x35 */
//I2C_SetSlaveAddr(I2C0, 2, 0x55, I2C_GCMODE_DISABLE); /* Slave Address : 0x55 */
//I2C_SetSlaveAddr(I2C0, 3, 0x75, I2C_GCMODE_DISABLE); /* Slave Address : 0x75 */
//I2C_EnableInt(I2C0);
//NVIC_EnableIRQ(I2C0_IRQn);
}
void UART_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UR */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset IP */
SYS_ResetModule(UART0_RST);
/* Configure UART0 and set UART0 Baudrate(115200) */
UART_Open( UART0,115200 );
}
/*---------------------------------------------------------------------------------------------------------*/
/* Main Function */
/*---------------------------------------------------------------------------------------------------------*/
int32_t main (void)
{
uint32_t u32startFlag = 1;
/* Init System, IP clock and multi-function I/O */
SYS_Init();
CLK->APBCLK0 |= CLK_APBCLK0_ANACKEN_Msk;
ANA->LDOPD &= ~ANA_LDOPD_PD_Msk;
ANA->LDOSEL = 3;
/* Init UART0 for printf */
UART_Init();
printf("+------------------------------------------------------------------------+\n");
printf("| I2S Driver Sample Code with WAU8822 |\n");
printf("+------------------------------------------------------------------------+\n");
printf(" NOTE: This sample code needs to work with WAU8822.\n");
/* Init I2C0 to access WAU8822 */
I2C0_Init();
I2S_Open(I2S0, I2S_MODE_MASTER, 16000, I2S_DATABIT_16, I2S_STEREO, I2S_FORMAT_I2S, I2S_I2S);
CLK_SetModuleClock(I2S0_MODULE, CLK_CLKSEL2_I2S0SEL_HCLK, 0);
/* Initialize WAU8822 codec */
WAU8822_Setup();
/* Set MCLK and enable MCLK */
I2S_EnableMCLK(I2S0, 4096000 );
/* Enable Rx threshold level interrupt */
I2S_EnableInt(I2S0, I2S_IEN_RXTHIEN_Msk);
/* Enable I2S Rx function to receive data */
I2S_ENABLE_RX(I2S0);
while(1) {
if (u32startFlag) {
/* Enable I2S Tx function to send data when data in the buffer is more than half of buffer size */
if (u32BuffPos >= BUFF_LEN/2) {
I2S_EnableInt(I2S0, I2S_IEN_TXTHIEN_Msk);
I2S_ENABLE_TX(I2S0);
u32startFlag = 0;
}
}
}
}
/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/
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