Diff: libs/LPC17xx/LPC17xxLib/src/lpc17xx_i2s.c

Revision:

3:f151d08d335c

Parent:

2:1df0b61d3b5a

--- a/libs/LPC17xx/LPC17xxLib/src/lpc17xx_i2s.c	Fri Feb 28 18:52:52 2014 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,604 +0,0 @@
-#ifdef __LPC17XX__
-
-/**********************************************************************
-* $Id$		lpc17xx_i2s.c				2010-09-23
-*//**
-* @file		lpc17xx_gpio.c
-* @brief	Contains all functions support for I2S firmware
-* 			library on LPC17xx
-* @version	3.1
-* @date		23. Sep. 2010
-* @author	NXP MCU SW Application Team
-*
-* Copyright(C) 2010, NXP Semiconductor
-* All rights reserved.
-*
-***********************************************************************
-* Software that is described herein is for illustrative purposes only
-* which provides customers with programming information regarding the
-* products. This software is supplied "AS IS" without any warranties.
-* NXP Semiconductors assumes no responsibility or liability for the
-* use of the software, conveys no license or title under any patent,
-* copyright, or mask work right to the product. NXP Semiconductors
-* reserves the right to make changes in the software without
-* notification. NXP Semiconductors also make no representation or
-* warranty that such application will be suitable for the specified
-* use without further testing or modification.
-**********************************************************************/
-
-/* Peripheral group ----------------------------------------------------------- */
-/** @addtogroup I2S
- * @{
- */
-
-/* Includes ------------------------------------------------------------------- */
-#include "lpc17xx_i2s.h"
-#include "lpc17xx_clkpwr.h"
-
-
-/* If this source file built with example, the LPC17xx FW library configuration
- * file in each example directory ("lpc17xx_libcfg.h") must be included,
- * otherwise the default FW library configuration file must be included instead
- */
-#ifdef __BUILD_WITH_EXAMPLE__
-#include "lpc17xx_libcfg.h"
-#else
-#include "lpc17xx_libcfg_default.h"
-#endif /* __BUILD_WITH_EXAMPLE__ */
-
-
-#ifdef _I2S
-
-/* Private Functions ---------------------------------------------------------- */
-
-static uint8_t i2s_GetWordWidth(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode);
-static uint8_t i2s_GetChannel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode);
-
-/********************************************************************//**
- * @brief		Get I2S wordwidth value
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is the I2S mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		The wordwidth value, should be: 8,16 or 32
- *********************************************************************/
-static uint8_t i2s_GetWordWidth(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
-	uint8_t value;
-
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_TX_MODE) {
-		value = (I2Sx->I2SDAO) & 0x03; /* get wordwidth bit */
-	} else {
-		value = (I2Sx->I2SDAI) & 0x03; /* get wordwidth bit */
-	}
-	switch (value) {
-	case I2S_WORDWIDTH_8:
-		return 8;
-	case I2S_WORDWIDTH_16:
-		return 16;
-	default:
-		return 32;
-	}
-}
-
-/********************************************************************//**
- * @brief		Get I2S channel value
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is the I2S mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		The channel value, should be: 1(mono) or 2(stereo)
- *********************************************************************/
-static uint8_t i2s_GetChannel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
-	uint8_t value;
-
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_TX_MODE) {
-		value = ((I2Sx->I2SDAO) & 0x04)>>2; /* get bit[2] */
-	} else {
-		value = ((I2Sx->I2SDAI) & 0x04)>>2; /* get bit[2] */
-	}
-        if(value == I2S_MONO) return 1;
-          return 2;
-}
-
-/* End of Private Functions --------------------------------------------------- */
-
-
-/* Public Functions ----------------------------------------------------------- */
-/** @addtogroup I2S_Public_Functions
- * @{
- */
-
-/********************************************************************//**
- * @brief		Initialize I2S
- * 					- Turn on power and clock
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @return 		none
- *********************************************************************/
-void I2S_Init(LPC_I2S_TypeDef *I2Sx) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-
-	// Turn on power and clock
-	CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCI2S, ENABLE);
-	LPC_I2S->I2SDAI = LPC_I2S->I2SDAO = 0x00;
-}
-
-/********************************************************************//**
- * @brief		Configuration I2S, setting:
- * 					- master/slave mode
- * 					- wordwidth value
- * 					- channel mode
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode transmit/receive mode, should be:
- * 					- I2S_TX_MODE = 0: transmit mode
- * 					- I2S_RX_MODE = 1: receive mode
- * @param[in]	ConfigStruct pointer to I2S_CFG_Type structure
- *              which will be initialized.
- * @return 		none
- *********************************************************************/
-void I2S_Config(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, I2S_CFG_Type* ConfigStruct)
-{
-	uint32_t bps, config;
-
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-
-	CHECK_PARAM(PARAM_I2S_WORDWIDTH(ConfigStruct->wordwidth));
-	CHECK_PARAM(PARAM_I2S_CHANNEL(ConfigStruct->mono));
-	CHECK_PARAM(PARAM_I2S_STOP(ConfigStruct->stop));
-	CHECK_PARAM(PARAM_I2S_RESET(ConfigStruct->reset));
-	CHECK_PARAM(PARAM_I2S_WS_SEL(ConfigStruct->ws_sel));
-	CHECK_PARAM(PARAM_I2S_MUTE(ConfigStruct->mute));
-
-	/* Setup clock */
-	bps = (ConfigStruct->wordwidth +1)*8;
-
-	/* Calculate audio config */
-	config = (bps - 1)<<6 | (ConfigStruct->ws_sel)<<5 | (ConfigStruct->reset)<<4 |
-		(ConfigStruct->stop)<<3 | (ConfigStruct->mono)<<2 | (ConfigStruct->wordwidth);
-
-	if(TRMode == I2S_RX_MODE){
-		LPC_I2S->I2SDAI = config;
-	}else{
-		LPC_I2S->I2SDAO = config;
-	}
-}
-
-/********************************************************************//**
- * @brief		DeInitial both I2S transmit or receive
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @return 		none
- *********************************************************************/
-void I2S_DeInit(LPC_I2S_TypeDef *I2Sx) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-
-	// Turn off power and clock
-	CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCI2S, DISABLE);
-}
-
-/********************************************************************//**
- * @brief		Get I2S Buffer Level
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode Transmit/receive mode, should be:
- * 					- I2S_TX_MODE = 0: transmit mode
- * 					- I2S_RX_MODE = 1: receive mode
- * @return 		current level of Transmit/Receive Buffer
- *********************************************************************/
-uint8_t I2S_GetLevel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode)
-{
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if(TRMode == I2S_TX_MODE)
-	{
-		return ((I2Sx->I2SSTATE >> 16) & 0xFF);
-	}
-	else
-	{
-		return ((I2Sx->I2SSTATE >> 8) & 0xFF);
-	}
-}
-
-/********************************************************************//**
- * @brief		I2S Start: clear all STOP,RESET and MUTE bit, ready to operate
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @return 		none
- *********************************************************************/
-void I2S_Start(LPC_I2S_TypeDef *I2Sx)
-{
-	//Clear STOP,RESET and MUTE bit
-	I2Sx->I2SDAO &= ~I2S_DAI_RESET;
-	I2Sx->I2SDAI &= ~I2S_DAI_RESET;
-	I2Sx->I2SDAO &= ~I2S_DAI_STOP;
-	I2Sx->I2SDAI &= ~I2S_DAI_STOP;
-	I2Sx->I2SDAO &= ~I2S_DAI_MUTE;
-}
-
-/********************************************************************//**
- * @brief		I2S Send data
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	BufferData pointer to uint32_t is the data will be send
- * @return 		none
- *********************************************************************/
-void I2S_Send(LPC_I2S_TypeDef *I2Sx, uint32_t BufferData) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-
-	I2Sx->I2STXFIFO = BufferData;
-}
-
-/********************************************************************//**
- * @brief		I2S Receive Data
- * @param[in]	I2Sx pointer to LPC_I2S_TypeDef
- * @return 		received value
- *********************************************************************/
-uint32_t I2S_Receive(LPC_I2S_TypeDef* I2Sx) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-
-	return (I2Sx->I2SRXFIFO);
-
-}
-
-/********************************************************************//**
- * @brief		I2S Pause
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		none
- *********************************************************************/
-void I2S_Pause(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_TX_MODE) //Transmit mode
-	{
-		I2Sx->I2SDAO |= I2S_DAO_STOP;
-	} else //Receive mode
-	{
-		I2Sx->I2SDAI |= I2S_DAI_STOP;
-	}
-}
-
-/********************************************************************//**
- * @brief		I2S Mute
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		none
- *********************************************************************/
-void I2S_Mute(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_TX_MODE) //Transmit mode
-	{
-		I2Sx->I2SDAO |= I2S_DAO_MUTE;
-	} else //Receive mode
-	{
-		I2Sx->I2SDAI |= I2S_DAI_MUTE;
-	}
-}
-
-/********************************************************************//**
- * @brief		I2S Stop
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		none
- *********************************************************************/
-void I2S_Stop(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_TX_MODE) //Transmit mode
-	{
-		I2Sx->I2SDAO &= ~I2S_DAO_MUTE;
-		I2Sx->I2SDAO |= I2S_DAO_STOP;
-		I2Sx->I2SDAO |= I2S_DAO_RESET;
-	} else //Receive mode
-	{
-		I2Sx->I2SDAI |= I2S_DAI_STOP;
-		I2Sx->I2SDAI |= I2S_DAI_RESET;
-	}
-}
-
-/********************************************************************//**
- * @brief		Set frequency for I2S
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	Freq is the frequency for I2S will be set. It can range
- * 				from 16-96 kHz(16, 22.05, 32, 44.1, 48, 96kHz)
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		Status: ERROR or SUCCESS
- *********************************************************************/
-Status I2S_FreqConfig(LPC_I2S_TypeDef *I2Sx, uint32_t Freq, uint8_t TRMode) {
-
-	uint32_t i2sMclk;
-	uint8_t bitrate, channel, wordwidth;
-
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PRAM_I2S_FREQ(Freq));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	//set i2s reference is i2s_pclk/2 as default
-	i2sMclk = CLKPWR_GetPCLK(CLKPWR_PCLKSEL_I2S)/2;
-	I2Sx->I2STXRATE = 1  | (1<<8);
-	I2Sx->I2SRXRATE = 1  | (1<<8);
-	if(TRMode == I2S_TX_MODE)
-	{
-		channel = i2s_GetChannel(I2Sx,I2S_TX_MODE);
-		wordwidth = i2s_GetWordWidth(I2Sx,I2S_TX_MODE);
-	}
-	else
-	{
-		channel = i2s_GetChannel(I2Sx,I2S_RX_MODE);
-		wordwidth = i2s_GetWordWidth(I2Sx,I2S_RX_MODE);
-	}
-	bitrate = i2sMclk/(Freq * channel * wordwidth) - 1;
-	if (TRMode == I2S_TX_MODE)// Transmitter
-	{
-		I2Sx->I2STXBITRATE = bitrate;
-	} else //Receiver
-	{
-		I2Sx->I2SRXBITRATE = bitrate;
-	}
-	return SUCCESS;
-}
-
-/********************************************************************//**
- * @brief		I2S set bitrate
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	bitrate value will be set
- * 				bitrate value should be in range: 0 .. 63
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		none
- *********************************************************************/
-void I2S_SetBitRate(LPC_I2S_TypeDef *I2Sx, uint8_t bitrate, uint8_t TRMode)
-{
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_BITRATE(bitrate));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if(TRMode == I2S_TX_MODE)
-	{
-		I2Sx->I2STXBITRATE = bitrate;
-	}
-	else
-	{
-		I2Sx->I2SRXBITRATE = bitrate;
-	}
-}
-
-/********************************************************************//**
- * @brief		Configuration operating mode for I2S
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	ModeConfig pointer to I2S_MODEConf_Type will be used to
- * 				configure
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		none
- *********************************************************************/
-void I2S_ModeConfig(LPC_I2S_TypeDef *I2Sx, I2S_MODEConf_Type* ModeConfig,
-		uint8_t TRMode)
-{
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_CLKSEL(ModeConfig->clksel));
-	CHECK_PARAM(PARAM_I2S_4PIN(ModeConfig->fpin));
-	CHECK_PARAM(PARAM_I2S_MCLK(ModeConfig->mcena));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_TX_MODE) {
-		I2Sx->I2STXMODE &= ~0x0F; //clear bit 3:0 in I2STXMODE register
-		if (ModeConfig->clksel == I2S_CLKSEL_MCLK) {
-			I2Sx->I2STXMODE |= 0x02;
-		}
-		if (ModeConfig->fpin == I2S_4PIN_ENABLE) {
-			I2Sx->I2STXMODE |= (1 << 2);
-		}
-		if (ModeConfig->mcena == I2S_MCLK_ENABLE) {
-			I2Sx->I2STXMODE |= (1 << 3);
-		}
-	} else {
-		I2Sx->I2SRXMODE &= ~0x0F; //clear bit 3:0 in I2STXMODE register
-		if (ModeConfig->clksel == I2S_CLKSEL_MCLK) {
-			I2Sx->I2SRXMODE |= 0x02;
-		}
-		if (ModeConfig->fpin == I2S_4PIN_ENABLE) {
-			I2Sx->I2SRXMODE |= (1 << 2);
-		}
-		if (ModeConfig->mcena == I2S_MCLK_ENABLE) {
-			I2Sx->I2SRXMODE |= (1 << 3);
-		}
-	}
-}
-
-/********************************************************************//**
- * @brief		Configure DMA operation for I2S
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	DMAConfig pointer to I2S_DMAConf_Type will be used to configure
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		none
- *********************************************************************/
-void I2S_DMAConfig(LPC_I2S_TypeDef *I2Sx, I2S_DMAConf_Type* DMAConfig,
-		uint8_t TRMode)
-{
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_DMA(DMAConfig->DMAIndex));
-	CHECK_PARAM(PARAM_I2S_DMA_DEPTH(DMAConfig->depth));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_RX_MODE) {
-		if (DMAConfig->DMAIndex == I2S_DMA_1) {
-			LPC_I2S->I2SDMA1 = (DMAConfig->depth) << 8;
-		} else {
-			LPC_I2S->I2SDMA2 = (DMAConfig->depth) << 8;
-		}
-	} else {
-		if (DMAConfig->DMAIndex == I2S_DMA_1) {
-			LPC_I2S->I2SDMA1 = (DMAConfig->depth) << 16;
-		} else {
-			LPC_I2S->I2SDMA2 = (DMAConfig->depth) << 16;
-		}
-	}
-}
-
-/********************************************************************//**
- * @brief		Enable/Disable DMA operation for I2S
- * @param[in]	I2Sx: I2S peripheral selected, should be: LPC_I2S
- * @param[in]	DMAIndex chose what DMA is used, should be:
- * 				- I2S_DMA_1 = 0: DMA1
- * 				- I2S_DMA_2 = 1: DMA2
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @param[in]	NewState is new state of DMA operation, should be:
- * 				- ENABLE
- * 				- DISABLE
- * @return 		none
- *********************************************************************/
-void I2S_DMACmd(LPC_I2S_TypeDef *I2Sx, uint8_t DMAIndex, uint8_t TRMode,
-		FunctionalState NewState)
-{
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
-	CHECK_PARAM(PARAM_I2S_DMA(DMAIndex));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-
-	if (TRMode == I2S_RX_MODE) {
-		if (DMAIndex == I2S_DMA_1) {
-			if (NewState == ENABLE)
-				I2Sx->I2SDMA1 |= 0x01;
-			else
-				I2Sx->I2SDMA1 &= ~0x01;
-		} else {
-			if (NewState == ENABLE)
-				I2Sx->I2SDMA2 |= 0x01;
-			else
-				I2Sx->I2SDMA2 &= ~0x01;
-		}
-	} else {
-		if (DMAIndex == I2S_DMA_1) {
-			if (NewState == ENABLE)
-				I2Sx->I2SDMA1 |= 0x02;
-			else
-				I2Sx->I2SDMA1 &= ~0x02;
-		} else {
-			if (NewState == ENABLE)
-				I2Sx->I2SDMA2 |= 0x02;
-			else
-				I2Sx->I2SDMA2 &= ~0x02;
-		}
-	}
-}
-
-/********************************************************************//**
- * @brief		Configure IRQ for I2S
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @param[in]	level is the FIFO level that triggers IRQ request
- * @return 		none
- *********************************************************************/
-void I2S_IRQConfig(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, uint8_t level) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_I2S_TRX(TRMode));
-	CHECK_PARAM(PARAM_I2S_IRQ_LEVEL(level));
-
-	if (TRMode == I2S_RX_MODE) {
-		I2Sx->I2SIRQ |= (level << 8);
-	} else {
-		I2Sx->I2SIRQ |= (level << 16);
-	}
-}
-
-/********************************************************************//**
- * @brief		Enable/Disable IRQ for I2S
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @param[in]	NewState is new state of DMA operation, should be:
- * 				- ENABLE
- * 				- DISABLE
- * @return 		none
- *********************************************************************/
-void I2S_IRQCmd(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, FunctionalState NewState) {
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
-
-	if (TRMode == I2S_RX_MODE) {
-		if (NewState == ENABLE)
-			I2Sx->I2SIRQ |= 0x01;
-		else
-			I2Sx->I2SIRQ &= ~0x01;
-		//Enable DMA
-
-	} else {
-		if (NewState == ENABLE)
-			I2Sx->I2SIRQ |= 0x02;
-		else
-			I2Sx->I2SIRQ &= ~0x02;
-	}
-}
-
-/********************************************************************//**
- * @brief		Get I2S interrupt status
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		FunctionState	should be:
- * 				- ENABLE: interrupt is enable
- * 				- DISABLE: interrupt is disable
- *********************************************************************/
-FunctionalState I2S_GetIRQStatus(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode)
-{
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	if(TRMode == I2S_TX_MODE)
-		return ((FunctionalState)((I2Sx->I2SIRQ >> 1)&0x01));
-	else
-		return ((FunctionalState)((I2Sx->I2SIRQ)&0x01));
-}
-
-/********************************************************************//**
- * @brief		Get I2S interrupt depth
- * @param[in]	I2Sx I2S peripheral selected, should be: LPC_I2S
- * @param[in]	TRMode is transmit/receive mode, should be:
- * 				- I2S_TX_MODE = 0: transmit mode
- * 				- I2S_RX_MODE = 1: receive mode
- * @return 		depth of FIFO level on which to create an irq request
- *********************************************************************/
-uint8_t I2S_GetIRQDepth(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode)
-{
-	CHECK_PARAM(PARAM_I2Sx(I2Sx));
-	if(TRMode == I2S_TX_MODE)
-		return (((I2Sx->I2SIRQ)>>16)&0xFF);
-	else
-		return (((I2Sx->I2SIRQ)>>8)&0xFF);
-}
-/**
- * @}
- */
-
-#endif /* _I2S */
-
-/**
- * @}
- */
-
-/* --------------------------------- End Of File ------------------------------ */
-
-#endif /* __LPC17XX__ */