i2s.h File Reference

#include <stdbool.h>
#include <stdint.h>
#include "../inc/hw_types.h"
#include "../inc/hw_memmap.h"
#include "../inc/hw_ints.h"
#include "../inc/hw_i2s.h"
#include "debug.h"
#include "interrupt.h"

Data Structures
struct	I2SControlTable
	A structure that defines an audio control table. Note: Memory for this structure must be initialized by user application. See detailed description! More...

Macros
#define	I2S_DMA_BUF_SIZE_64   0x00000040
#define	I2S_DMA_BUF_SIZE_128   0x00000080
#define	I2S_DMA_BUF_SIZE_256   0x00000100
#define	I2S_EXT_WCLK   0x00000001
#define	I2S_INT_WCLK   0x00000002
#define	I2S_INVERT_WCLK   0x00000004
#define	I2S_NORMAL_WCLK   0x00000000
#define	I2S_LINE_UNUSED   0x00000000
#define	I2S_LINE_INPUT   0x00000001
#define	I2S_LINE_OUTPUT   0x00000002
#define	I2S_LINE_MASK   0x00000003
#define	I2S_CHAN0_ACT   0x00000100
#define	I2S_CHAN1_ACT   0x00000200
#define	I2S_CHAN2_ACT   0x00000400
#define	I2S_CHAN3_ACT   0x00000800
#define	I2S_CHAN4_ACT   0x00001000
#define	I2S_CHAN5_ACT   0x00002000
#define	I2S_CHAN6_ACT   0x00004000
#define	I2S_CHAN7_ACT   0x00008000
#define	I2S_MONO_MODE   0x00000100
#define	I2S_STEREO_MODE   0x00000300
#define	I2S_CHAN_CFG_MASK   0x0000FF00
#define	I2S_CHAN0_MASK   0x00000001
#define	I2S_CHAN1_MASK   0x00000002
#define	I2S_CHAN2_MASK   0x00000004
#define	I2S_CHAN3_MASK   0x00000008
#define	I2S_CHAN4_MASK   0x00000010
#define	I2S_CHAN5_MASK   0x00000020
#define	I2S_CHAN6_MASK   0x00000040
#define	I2S_CHAN7_MASK   0x00000080
#define	I2S_MEM_LENGTH_16   0x00000000
#define	I2S_MEM_LENGTH_24   0x00000080
#define	I2S_POS_EDGE   0x00000040
#define	I2S_NEG_EDGE   0x00000000
#define	I2S_DUAL_PHASE_FMT   0x00000020
#define	I2S_SINGLE_PHASE_FMT   0x00000000
#define	I2S_WORD_LENGTH_8   0x00000008
#define	I2S_WORD_LENGTH_16   0x00000010
#define	I2S_WORD_LENGTH_24   0x00000018
#define	I2S_STMP0   0x00000001
#define	I2S_STMP1   0x00000002
#define	I2S_STMP_SATURATION   0x0000FFFF
#define	I2S_INT_DMA_IN   0x00000020
#define	I2S_INT_DMA_OUT   0x00000010
#define	I2S_INT_TIMEOUT   0x00000008
#define	I2S_INT_BUS_ERR   0x00000004
#define	I2S_INT_WCLK_ERR   0x00000002
#define	I2S_INT_PTR_ERR   0x00000001
#define	I2S_INT_ALL   0x0000003F

Functions
void	I2SEnable (uint32_t ui32Base)
	Enables the I2S module for operation. More...
static void	I2SDisable (uint32_t ui32Base)
	Disables the I2S module for operation. More...
void	I2SAudioFormatConfigure (uint32_t ui32Base, uint32_t ui32FmtCfg, uint32_t ui32BitClkDelay)
	Configures the I2S module. More...
void	I2SChannelConfigure (uint32_t ui32Base, uint32_t ui32Chan0Cfg, uint32_t ui32Chan1Cfg)
	Setup the audio channel configuration. More...
static void	I2SClockConfigure (uint32_t ui32Base, uint32_t ui32ClkConfig)
	Configure the I2S frame clock. More...
void	I2SBufferConfig (uint32_t ui32Base, uint32_t ui32InBufBase, uint32_t ui32OutBufBase, uint16_t ui16DMABufSize, uint16_t ui16ChanBufSize)
	Set the input buffer pointers. More...
void	I2SPointerUpdate (uint32_t ui32Base, bool bInput)
	Update the buffer pointers. More...
void	I2SPointerSet (uint32_t ui32Base, bool bInput, void *pNextPointer)
	Set a buffer pointer (input or output) directly. More...
static void	I2SIntRegister (uint32_t ui32Base, void(*pfnHandler)(void))
	Registers an interrupt handler for an I2S interrupt in the dynamic interrupt table. More...
static void	I2SIntUnregister (uint32_t ui32Base)
	Unregisters an interrupt handler for a I2S interrupt in the dynamic interrupt table. More...
void	I2SSampleStampConfigure (uint32_t ui32Base, bool bInput, bool bOutput)
	Configure the sample stamp generator. More...
static void	I2SIntEnable (uint32_t ui32Base, uint32_t ui32IntFlags)
	Enables individual I2S interrupt sources. More...
static void	I2SIntDisable (uint32_t ui32Base, uint32_t ui32IntFlags)
	Disables individual I2S interrupt sources. More...
static uint32_t	I2SIntStatus (uint32_t ui32Base, bool bMasked)
	Gets the current interrupt status. More...
static void	I2SIntClear (uint32_t ui32Base, uint32_t ui32IntFlags)
	Clears I2S interrupt sources. More...
static void	I2SSampleStampEnable (uint32_t ui32Base)
	Enable the Sample Stamp generator. More...
static void	I2SSampleStampDisable (uint32_t ui32Base)
	Disable the Sample Stamp generator. More...
uint32_t	I2SSampleStampGet (uint32_t ui32Base, uint32_t ui32Channel)
	Get the current value of a sample stamp counter. More...
static void	I2SStart (uint32_t ui32Base, uint8_t ui8FixDMALength)
	Starts the I2S. More...
static void	I2SStop (uint32_t ui32Base)
	Stops the I2S module for operation. More...
static void	I2SFormatConfigure (uint32_t ui32Base, uint8_t ui8iDataDelay, uint8_t ui8iMemory24Bits, uint8_t ui8iSamplingEdge, bool boolDualPhase, uint8_t ui8BitsPerSample, uint16_t ui16transmissionDelay)
	Configure the serial format of the I2S module. More...
static void	I2SFrameConfigure (uint32_t ui32Base, uint8_t ui8StatusAD0, uint8_t ui8ChanAD0, uint8_t ui8StatusAD1, uint8_t ui8ChanAD1)
	Setup the two interfaces SD0 and SD1 (also called AD0 and AD1). More...
static void	I2SWclkConfigure (uint32_t ui32Base, bool boolMaster, bool boolWCLKInvert)
	Configure the I2S frame clock (also called WCLK or WS). More...
static void	I2SInPointerSet (uint32_t ui32Base, uint32_t ui32NextPointer)
	Set the input buffer pointer. More...
static void	I2SOutPointerSet (uint32_t ui32Base, uint32_t ui32NextPointer)
	Set the output buffer pointer. More...
static uint32_t	I2SInPointerNextGet (uint32_t ui32Base)
	Get value stored in PTR NEXT IN register. More...
static uint32_t	I2SOutPointerNextGet (uint32_t ui32Base)
	Get value stored in PTR NEXT OUT register. More...
static uint32_t	I2SInPointerGet (uint32_t ui32Base)
	Get value stored in PTR IN register. More...
static uint32_t	I2SOutPointerGet (uint32_t ui32Base)
	Get value stored in PTR OUT register. More...
static void	I2SSampleStampInConfigure (uint32_t ui32Base, uint16_t ui16TrigValue)
	Configure the IN sample stamp generator. More...
static void	I2SSampleStampOutConfigure (uint32_t ui32Base, uint16_t ui16TrigValue)
	Configure the OUT sample stamp generator. More...
static void	I2SWclkCounterConfigure (uint32_t ui32Base, int16_t i16Value)
	Add the specified value to the WCLK count. More...
static void	I2SWclkCounterReset (uint32_t ui32Base)
	Reset the WCLK count. More...

Variables
I2SControlTable *	g_pControlTable