DAC routines. More...

#include <cfg/os.h>
#include <cfg/clock.h>
#include <dev/board.h>
#include <dev/irqreg.h>
#include <dev/twif.h>
#include <stdlib.h>
#include <string.h>
#include <memdebug.h>
#include <sys/event.h>
#include <sys/timer.h>
#include <dev/tlv320dac.h>

Include dependency graph for tlv320dac.c:

Go to the source code of this file.

Data Structures
struct	_PCM_BUFFER
	PCM buffer type. More...
Defines
#define	TWI_SLA_DAC 0x1A
#define	TLV320DAC_VOL 0x18
#define	SAMPLE_BUFFERS 3
#define	DACI2S_PIO_ID PIOA_ID
#define	DACI2S_PINS_A _BV(PA23_TD_A) \| _BV(PA21_TF_A) \| _BV(PA22_TK_A)
#define	DACI2S_PINS_B 0
#define	DACI2S_PDR PIOA_PDR
#define	DACI2S_ASR PIOA_ASR
#define	DACI2S_BSR PIOA_BSR
#define	PCM_CHANS 2
	Number of channels.
#define	PCM_BITS 16
	Number of bits per sample.
Typedefs
typedef struct _PCM_BUFFER	PCM_BUFFER
	PCM buffer type.
Functions
u_char	Tlv320DacReadReg (unsigned int reg)
	Read value from specified DAC register.
void	Tlv320DacWriteReg (unsigned int reg, unsigned int val)
	Write value to specified DAC register.
int	Tlv320DacSetRate (unsigned int rate)
int	Tlv320DacInit (unsigned int rate)
	Initialize TLV320AIC23B DAC interface.
int	Tlv320DacFlush (void)
	Wait until all buffered samples have been transmitted.
int	Tlv320DacWrite (void *buf, int len)
	Add audio samples to the TLV320AIC23B transmit queue.
int	Tlv320DacSetVolume (int left, int right)
	Set volume.
int	Tlv320SwitchMode (void)
Variables
volatile uint32_t	irq_counter
unsigned int	use_pdc = 1

Detailed Description

DAC routines.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

For additional information see http://www.ethernut.de/

 *
 * $Log$
 * Revision 1.3  2009/02/13 14:52:05  haraldkipp
 * Include memdebug.h for heap management debugging support.
 *
 * Revision 1.2  2009/01/17 11:26:37  haraldkipp
 * Getting rid of two remaining BSD types in favor of stdint.
 * Replaced 'u_int' by 'unsinged int' and 'uptr_t' by 'uintptr_t'.
 *
 * Revision 1.1  2008/10/05 16:51:46  haraldkipp
 * Added suport for the TLV320 audio DAC.
 *
 *
 *

Definition in file tlv320dac.c.