/********************************************************************** * $Id$ lpc_i2s.h 2011-06-02 *//** * @file lpc_i2s.h * @brief Contains all macro definitions and function prototypes * support for I2S firmware library on LPC * @version 1.0 * @date 02. June. 2011 * @author NXP MCU SW Application Team * * Copyright(C) 2011, 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. * Permission to use, copy, modify, and distribute this software and its * documentation is hereby granted, under NXP Semiconductors' * relevant copyright in the software, without fee, provided that it * is used in conjunction with NXP Semiconductors microcontrollers. This * copyright, permission, and disclaimer notice must appear in all copies of * this code. **********************************************************************/ /* Peripheral group ----------------------------------------------------------- */ /** @defgroup I2S I2S (Inter-IC Sound bus) * @ingroup LPC_CMSIS_FwLib_Drivers * @{ */ #ifndef __LPC_I2S_H_ #define __LPC_I2S_H_ /* Includes ------------------------------------------------------------------- */ #include "LPC407x_8x_177x_8x.h" #include "lpc_types.h" #ifdef __cplusplus extern "C" { #endif /* Public Macros -------------------------------------------------------------- */ /** @defgroup I2S_Public_Macros I2S Public Macros * @{ */ /*********************************************************************//** * I2S configuration parameter defines **********************************************************************/ /** I2S Wordwidth bit */ #define I2S_WORDWIDTH_8 ((uint32_t)(0)) #define I2S_WORDWIDTH_16 ((uint32_t)(1)) #define I2S_WORDWIDTH_32 ((uint32_t)(3)) /** I2S Channel bit */ #define I2S_STEREO ((uint32_t)(0)) #define I2S_MONO ((uint32_t)(1)) /** I2S Master/Slave mode bit */ #define I2S_MASTER_MODE ((uint8_t)(0)) #define I2S_SLAVE_MODE ((uint8_t)(1)) /** I2S Stop bit */ #define I2S_STOP_ENABLE ((uint8_t)(1)) #define I2S_STOP_DISABLE ((uint8_t)(0)) /** I2S Reset bit */ #define I2S_RESET_ENABLE ((uint8_t)(1)) #define I2S_RESET_DISABLE ((uint8_t)(0)) /** I2S Mute bit */ #define I2S_MUTE_ENABLE ((uint8_t)(1)) #define I2S_MUTE_DISABLE ((uint8_t)(0)) /** I2S Transmit/Receive bit */ #define I2S_TX_MODE ((uint8_t)(0)) #define I2S_RX_MODE ((uint8_t)(1)) /** I2S Clock Select bit */ #define I2S_CLKSEL_FRDCLK ((uint8_t)(0)) #define I2S_CLKSEL_MCLK ((uint8_t)(2)) /** I2S 4-pin Mode bit */ #define I2S_4PIN_ENABLE ((uint8_t)(1)) #define I2S_4PIN_DISABLE ((uint8_t)(0)) /** I2S MCLK Enable bit */ #define I2S_MCLK_ENABLE ((uint8_t)(1)) #define I2S_MCLK_DISABLE ((uint8_t)(0)) /** I2S select DMA bit */ #define I2S_DMA_1 ((uint8_t)(0)) #define I2S_DMA_2 ((uint8_t)(1)) /** * @} */ /* Private Macros ------------------------------------------------------------- */ /** @defgroup I2S_Private_Macros I2S Private Macros * @{ */ /*********************************************************************//** * Macro defines for DAO-Digital Audio Output register **********************************************************************/ /** I2S wordwide - the number of bytes in data output - 8 bits*/ #define I2S_DAO_WORDWIDTH_8 ((uint32_t)(0)) /** I2S wordwide - the number of bytes in data output - 16 bits*/ #define I2S_DAO_WORDWIDTH_16 ((uint32_t)(1)) /** I2S wordwide - the number of bytes in data output - 32 bits*/ #define I2S_DAO_WORDWIDTH_32 ((uint32_t)(3)) /** I2S control mono or stereo format */ #define I2S_DAO_MONO ((uint32_t)(1<<2)) /** I2S control stop mode */ #define I2S_DAO_STOP ((uint32_t)(1<<3)) /** I2S control reset mode */ #define I2S_DAO_RESET ((uint32_t)(1<<4)) /** I2S control master/slave mode */ #define I2S_DAO_SLAVE ((uint32_t)(1<<5)) /** I2S word select half period minus one */ #define I2S_DAO_WS_HALFPERIOD(n) ((uint32_t)(n<<6)) /** I2S control mute mode */ #define I2S_DAO_MUTE ((uint32_t)(1<<15)) /*********************************************************************//** * Macro defines for DAI-Digital Audio Input register **********************************************************************/ /** I2S wordwide - the number of bytes in data input - 8 bit*/ #define I2S_DAI_WORDWIDTH_8 ((uint32_t)(0)) /** I2S wordwide - the number of bytes in data input - 16 bit*/ #define I2S_DAI_WORDWIDTH_16 ((uint32_t)(1)) /** I2S wordwide - the number of bytes in data input - 32 bit*/ #define I2S_DAI_WORDWIDTH_32 ((uint32_t)(3)) /** I2S control mono or stereo format */ #define I2S_DAI_MONO ((uint32_t)(1<<2)) /** I2S control stop mode */ #define I2S_DAI_STOP ((uint32_t)(1<<3)) /** I2S control reset mode */ #define I2S_DAI_RESET ((uint32_t)(1<<4)) /** I2S control master/slave mode */ #define I2S_DAI_SLAVE ((uint32_t)(1<<5)) /** I2S word select half period minus one (9 bits)*/ #define I2S_DAI_WS_HALFPERIOD(n) ((uint32_t)((n&0x1FF)<<6)) /** I2S control mute mode */ #define I2S_DAI_MUTE ((uint32_t)(1<<15)) /*********************************************************************//** * Macro defines for STAT register (Status Feedback register) **********************************************************************/ /** I2S Status Receive or Transmit Interrupt */ #define I2S_STATE_IRQ ((uint32_t)(1)) /** I2S Status Receive or Transmit DMA1 */ #define I2S_STATE_DMA1 ((uint32_t)(1<<1)) /** I2S Status Receive or Transmit DMA2 */ #define I2S_STATE_DMA2 ((uint32_t)(1<<2)) /** I2S Status Current level of the Receive FIFO (5 bits)*/ #define I2S_STATE_RX_LEVEL(n) ((uint32_t)((n&1F)<<8)) /** I2S Status Current level of the Transmit FIFO (5 bits)*/ #define I2S_STATE_TX_LEVEL(n) ((uint32_t)((n&1F)<<16)) /*********************************************************************//** * Macro defines for DMA1 register (DMA1 Configuration register) **********************************************************************/ /** I2S control DMA1 for I2S receive */ #define I2S_DMA1_RX_ENABLE ((uint32_t)(1)) /** I2S control DMA1 for I2S transmit */ #define I2S_DMA1_TX_ENABLE ((uint32_t)(1<<1)) /** I2S set FIFO level that trigger a receive DMA request on DMA1 */ #define I2S_DMA1_RX_DEPTH(n) ((uint32_t)((n&0x1F)<<8)) /** I2S set FIFO level that trigger a transmit DMA request on DMA1 */ #define I2S_DMA1_TX_DEPTH(n) ((uint32_t)((n&0x1F)<<16)) /*********************************************************************//** * Macro defines for DMA2 register (DMA2 Configuration register) **********************************************************************/ /** I2S control DMA2 for I2S receive */ #define I2S_DMA2_RX_ENABLE ((uint32_t)(1)) /** I2S control DMA1 for I2S transmit */ #define I2S_DMA2_TX_ENABLE ((uint32_t)(1<<1)) /** I2S set FIFO level that trigger a receive DMA request on DMA1 */ #define I2S_DMA2_RX_DEPTH(n) ((uint32_t)((n&0x1F)<<8)) /** I2S set FIFO level that trigger a transmit DMA request on DMA1 */ #define I2S_DMA2_TX_DEPTH(n) ((uint32_t)((n&0x1F)<<16)) /*********************************************************************//** * Macro defines for IRQ register (Interrupt Request Control register) **********************************************************************/ /** I2S control I2S receive interrupt */ #define I2S_IRQ_RX_ENABLE ((uint32_t)(1)) /** I2S control I2S transmit interrupt */ #define I2S_IRQ_TX_ENABLE ((uint32_t)(1<<1)) /** I2S set the FIFO level on which to create an irq request */ #define I2S_IRQ_RX_DEPTH(n) ((uint32_t)((n&0x1F)<<8)) /** I2S set the FIFO level on which to create an irq request */ #define I2S_IRQ_TX_DEPTH(n) ((uint32_t)((n&0x1F)<<16)) /********************************************************************************//** * Macro defines for TXRATE/RXRATE register (Transmit/Receive Clock Rate register) *********************************************************************************/ /** I2S Transmit MCLK rate denominator */ #define I2S_TXRATE_Y_DIVIDER(n) ((uint32_t)(n&0xFF)) /** I2S Transmit MCLK rate denominator */ #define I2S_TXRATE_X_DIVIDER(n) ((uint32_t)((n&0xFF)<<8)) /** I2S Receive MCLK rate denominator */ #define I2S_RXRATE_Y_DIVIDER(n) ((uint32_t)(n&0xFF)) /** I2S Receive MCLK rate denominator */ #define I2S_RXRATE_X_DIVIDER(n) ((uint32_t)((n&0xFF)<<8)) /*************************************************************************************//** * Macro defines for TXBITRATE & RXBITRATE register (Transmit/Receive Bit Rate register) **************************************************************************************/ #define I2S_TXBITRATE(n) ((uint32_t)(n&0x3F)) #define I2S_RXBITRATE(n) ((uint32_t)(n&0x3F)) /**********************************************************************************//** * Macro defines for TXMODE/RXMODE register (Transmit/Receive Mode Control register) ************************************************************************************/ /** I2S Transmit select clock source (2 bits)*/ #define I2S_TXMODE_CLKSEL(n) ((uint32_t)(n&0x03)) /** I2S Transmit control 4-pin mode */ #define I2S_TXMODE_4PIN_ENABLE ((uint32_t)(1<<2)) /** I2S Transmit control the TX_MCLK output */ #define I2S_TXMODE_MCENA ((uint32_t)(1<<3)) /** I2S Receive select clock source */ #define I2S_RXMODE_CLKSEL(n) ((uint32_t)(n&0x03)) /** I2S Receive control 4-pin mode */ #define I2S_RXMODE_4PIN_ENABLE ((uint32_t)(1<<2)) /** I2S Receive control the TX_MCLK output */ #define I2S_RXMODE_MCENA ((uint32_t)(1<<3)) /** * @} */ /* Public Types --------------------------------------------------------------- */ /** @defgroup I2S_Public_Types I2S Public Types * @{ */ /** * @brief I2S configuration structure definition */ typedef struct { uint8_t wordwidth; /** the number of bytes in data as follow: -I2S_WORDWIDTH_8: 8 bit data -I2S_WORDWIDTH_16: 16 bit data -I2S_WORDWIDTH_32: 32 bit data */ uint8_t mono; /** Set mono/stereo mode, should be: - I2S_STEREO: stereo mode - I2S_MONO: mono mode */ uint8_t stop; /** Disables accesses on FIFOs, should be: - I2S_STOP_ENABLE: enable stop mode - I2S_STOP_DISABLE: disable stop mode */ uint8_t reset; /** Asynchronously reset tje transmit channel and FIFO, should be: - I2S_RESET_ENABLE: enable reset mode - I2S_RESET_DISABLE: disable reset mode */ uint8_t ws_sel; /** Set Master/Slave mode, should be: - I2S_MASTER_MODE: I2S master mode - I2S_SLAVE_MODE: I2S slave mode */ uint8_t mute; /** MUTE mode: when true, the transmit channel sends only zeroes, shoule be: - I2S_MUTE_ENABLE: enable mute mode - I2S_MUTE_DISABLE: disable mute mode */ uint8_t Reserved0[2]; } I2S_CFG_Type; /** * @brief I2S DMA configuration structure definition */ typedef struct { uint8_t DMAIndex; /** Select DMA1 or DMA2, should be: - I2S_DMA_1: DMA1 - I2S_DMA_2: DMA2 */ uint8_t depth; /** FIFO level that triggers a DMA request */ uint8_t Reserved0[2]; }I2S_DMAConf_Type; /** * @brief I2S mode configuration structure definition */ typedef struct{ uint8_t clksel; /** Clock source selection, should be: - I2S_CLKSEL_FRDCLK: Select the fractional rate divider clock output - I2S_CLKSEL_MCLK: Select the MCLK signal as the clock source */ uint8_t fpin; /** Select four pin mode, should be: - I2S_4PIN_ENABLE: 4-pin enable - I2S_4PIN_DISABLE: 4-pin disable */ uint8_t mcena; /** Select MCLK mode, should be: - I2S_MCLK_ENABLE: MCLK enable for output - I2S_MCLK_DISABLE: MCLK disable for output */ uint8_t Reserved; }I2S_MODEConf_Type; /** * @} */ /* Public Functions ----------------------------------------------------------- */ /** @defgroup I2S_Public_Functions I2S Public Functions * @{ */ /* I2S Init/DeInit functions ---------*/ void I2S_Init(LPC_I2S_TypeDef *I2Sx); void I2S_DeInit(LPC_I2S_TypeDef *I2Sx); /* I2S configuration functions --------*/ void I2S_Config(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, I2S_CFG_Type* ConfigStruct); Status I2S_FreqConfig(LPC_I2S_TypeDef *I2Sx, uint32_t Freq, uint8_t TRMode); void I2S_SetBitRate(LPC_I2S_TypeDef *I2Sx, uint8_t bitrate, uint8_t TRMode); void I2S_ModeConfig(LPC_I2S_TypeDef *I2Sx, I2S_MODEConf_Type* ModeConfig, uint8_t TRMode); uint8_t I2S_GetLevel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode); /* I2S operate functions -------------*/ void I2S_Send(LPC_I2S_TypeDef *I2Sx, uint32_t BufferData); uint32_t I2S_Receive(LPC_I2S_TypeDef* I2Sx); void I2S_Start(LPC_I2S_TypeDef *I2Sx); void I2S_Pause(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode); void I2S_Mute(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode); void I2S_Stop(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode); /* I2S DMA functions ----------------*/ void I2S_DMAConfig(LPC_I2S_TypeDef *I2Sx, I2S_DMAConf_Type* DMAConfig, uint8_t TRMode); void I2S_DMACmd(LPC_I2S_TypeDef *I2Sx, uint8_t DMAIndex,uint8_t TRMode, FunctionalState NewState); /* I2S IRQ functions ----------------*/ void I2S_IRQCmd(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode, FunctionalState NewState); void I2S_IRQConfig(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, uint8_t level); FunctionalState I2S_GetIRQStatus(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode); uint8_t I2S_GetIRQDepth(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode); /** * @} */ #ifdef __cplusplus } #endif #endif /* __LPC_SSP_H_ */ /** * @} */ /* --------------------------------- End Of File ------------------------------ */