adpcm_encoder/adpcm_example.c File Reference

#include <avr32/io.h>
#include "compiler.h"
#include "board.h"
#include "dsp.h"
#include "pm.h"
#include "gpio.h"
#include "usart.h"
#include "intc.h"
#include "pwm.h"
#include "flashc.h"
#include "preprocessor.h"
#include "adc.h"
#include "tc.h"
#include "pdca.h"

Macros
#define	ADC_CHANNEL   1
	ADC channel. More...
#define	AVR32_PDCA_PID_USART_TX   AVR32_PDCA_PID_USART1_TX
#define	BUFFER_SIZE   (252*4)
	The size of the buffer. More...
#define	CP_PBA_SPEED   12000000
	The clock frequency. More...
#define	EXAMPLE_USART   (&AVR32_USART1)
#define	EXAMPLE_USART_RX_FUNCTION   AVR32_USART1_RXD_0_0_FUNCTION
#define	EXAMPLE_USART_RX_PIN   AVR32_USART1_RXD_0_0_PIN
#define	EXAMPLE_USART_TX_FUNCTION   AVR32_USART1_TXD_0_0_FUNCTION
#define	EXAMPLE_USART_TX_PIN   AVR32_USART1_TXD_0_0_PIN
#define	NB_BUFFERS   2
	Number of buffers. More...
#define	PDCA_ADC_CHANNEL   0
	PDCA channel for the ADC. More...
#define	PDCA_USART_CHANNEL   1
	PDCA channel for the USART. More...
#define	STATE_GET_SAMPLES   2
#define	STATE_SEND_USART   1
#define	TC_CHANNEL   0
	Timer Counter channel. More...

Enumerations
enum	{   BUFFER_STATE_FREE = 0,   BUFFER_STATE_BUSY = 1,   BUFFER_STATE_FILLED = 2 }

Functions
void	init_adc ()
void	init_pdca_adc ()
void	init_pdca_usart ()
void	init_tc (int rate)
void	init_usart ()
	this function initializes the USART module at 115200 bauds More...
int	main (int argc, char *argv[])
	The main function. More...
static void	pdca_adc_interrupt_handler (void)
static void	pdca_usart_interrupt_handler (void)
void	sys_cpu_48MHz (void)
	To set the clock frequency to 48MHz. More...

Variables
A_ALIGNED char	buffer [NB_BUFFERS][BUFFER_SIZE]
	The main buffer. More...
enum { ... }	buffer_state [NB_BUFFERS]
int	i_r
int	i_w
char *	pbuffer_r
char *	pbuffer_w
	return
	Low-level initialization routine called during startup, before the main function. More...
volatile int	state
	state machine variable More...
A_ALIGNED char	tbuffer [BUFFER_SIZE/4+4]
	Transfer buffer. More...

#define ADC_CHANNEL   1

ADC channel.

Referenced by init_adc().

#define AVR32_PDCA_PID_USART_TX   AVR32_PDCA_PID_USART1_TX

Referenced by init_pdca_usart(), and main().

#define BUFFER_SIZE   (252*4)

The size of the buffer.

Referenced by main().

#define CP_PBA_SPEED   12000000

The clock frequency.

Referenced by init_tc(), and init_usart().

#define EXAMPLE_USART   (&AVR32_USART1)

Referenced by init_usart().

#define EXAMPLE_USART_RX_FUNCTION   AVR32_USART1_RXD_0_0_FUNCTION

Referenced by init_usart().

#define EXAMPLE_USART_RX_PIN   AVR32_USART1_RXD_0_0_PIN

Referenced by init_usart().

#define EXAMPLE_USART_TX_FUNCTION   AVR32_USART1_TXD_0_0_FUNCTION

Referenced by init_usart().

#define EXAMPLE_USART_TX_PIN   AVR32_USART1_TXD_0_0_PIN

Referenced by init_usart().

#define NB_BUFFERS   2

Number of buffers.

Referenced by main(), pdca_adc_interrupt_handler(), and pdca_usart_interrupt_handler().

#define PDCA_ADC_CHANNEL   0

PDCA channel for the ADC.

Referenced by init_pdca_adc(), main(), and pdca_adc_interrupt_handler().

#define PDCA_USART_CHANNEL   1

PDCA channel for the USART.

Referenced by init_pdca_usart(), main(), and pdca_usart_interrupt_handler().

#define STATE_GET_SAMPLES   2

Referenced by main(), and pdca_adc_interrupt_handler().

#define STATE_SEND_USART   1

Referenced by main(), and pdca_adc_interrupt_handler().

#define TC_CHANNEL   0

Timer Counter channel.

Referenced by init_adc(), init_tc(), init_timer_isr(), and ISR().

anonymous enum

Enumerator
BUFFER_STATE_FREE
BUFFER_STATE_BUSY
BUFFER_STATE_FILLED

void init_adc

(

)

References ADC_CHANNEL, adc_configure(), adc_enable(), ADC_GPIO_MAP, ATPASTE3, gpio_enable_module(), and TC_CHANNEL.

Referenced by main().

void init_pdca_adc

(

)

References pdca_channel_options_t::addr, ATPASTE2, buffer, INTC_register_interrupt(), NULL, PDCA_ADC_CHANNEL, pdca_adc_interrupt_handler(), pdca_init_channel(), and PDCA_TRANSFER_SIZE_HALF_WORD.

Referenced by main().

void init_pdca_usart

(

)

References pdca_channel_options_t::addr, ATPASTE2, AVR32_PDCA_PID_USART_TX, buffer, INTC_register_interrupt(), NULL, pdca_init_channel(), PDCA_TRANSFER_SIZE_BYTE, PDCA_USART_CHANNEL, and pdca_usart_interrupt_handler().

Referenced by main().

void init_tc

(

int

rate

)

References tc_waveform_opt_t::channel, CP_PBA_SPEED, FALSE, TC_CHANNEL, TC_CLOCK_SOURCE_TC2, TC_EVT_EFFECT_NOOP, TC_EVT_EFFECT_TOGGLE, tc_init_waveform(), TC_SEL_NO_EDGE, tc_start(), TC_WAVEFORM_SEL_UP_MODE_RC_TRIGGER, and tc_write_rc().

Referenced by main().

void init_usart

(

)

this function initializes the USART module at 115200 bauds

References usart_options_t::baudrate, CP_PBA_SPEED, EXAMPLE_USART, EXAMPLE_USART_RX_FUNCTION, EXAMPLE_USART_RX_PIN, EXAMPLE_USART_TX_FUNCTION, EXAMPLE_USART_TX_PIN, gpio_enable_module(), USART_1_STOPBIT, usart_init_rs232(), USART_NO_PARITY, and USART_NORMAL_CHMODE.

Referenced by main().

int main	(	int	argc,
		char *	argv[]
	)

The main function.

References adc_start(), buffer, BUFFER_SIZE, buffer_state, BUFFER_STATE_BUSY, BUFFER_STATE_FILLED, BUFFER_STATE_FREE, Disable_global_interrupt, dsp_adpcm_ima_encode(), Enable_global_interrupt, flashc_set_wait_state(), i, i_r, i_w, init_adc(), init_pdca_adc(), init_pdca_usart(), init_tc(), init_usart(), INTC_init_interrupts(), NB_BUFFERS, pbuffer_r, pbuffer_w, PDCA_ADC_CHANNEL, pdca_enable(), pdca_enable_interrupt_transfer_complete(), pdca_reload_channel(), PDCA_USART_CHANNEL, predicted_value, state, STATE_GET_SAMPLES, STATE_SEND_USART, step_index, sys_cpu_48MHz(), and tbuffer.

static void pdca_adc_interrupt_handler ( void  )

static

References buffer, buffer_state, BUFFER_STATE_FILLED, i_w, NB_BUFFERS, pbuffer_w, PDCA_ADC_CHANNEL, pdca_disable_interrupt_transfer_complete(), state, STATE_GET_SAMPLES, and STATE_SEND_USART.

Referenced by init_pdca_adc().

static void pdca_usart_interrupt_handler ( void  )

static

References buffer, buffer_state, BUFFER_STATE_FREE, i_r, NB_BUFFERS, pbuffer_r, pdca_disable_interrupt_transfer_complete(), and PDCA_USART_CHANNEL.

Referenced by init_pdca_usart().

void sys_cpu_48MHz

(

void

)

To set the clock frequency to 48MHz.

References FOSC0, OSC0_STARTUP, pm_cksel(), pm_pll_enable(), pm_pll_set_option(), pm_pll_setup(), pm_switch_to_clock(), pm_switch_to_osc0(), pm_wait_for_pll0_locked(), and TRUE.

Referenced by main().

A_ALIGNED char buffer[NB_BUFFERS][BUFFER_SIZE]

The main buffer.

Referenced by audio_mixer_get_buffer_direct(), compress_first_pass(), compress_output(), consume_data(), d2i_RSA_PUBKEY(), dac_sample_sent_cb(), decompress_data(), decompress_smooth_data(), fifo_init(), init_pdca(), init_pdca_adc(), init_pdca_usart(), jinit_c_coef_controller(), jinit_d_coef_controller(), main(), mxt_probe_device(), output_message(), pdca_adc_interrupt_handler(), pdca_interrupt_handler(), pdca_usart_interrupt_handler(), qt_write_regs(), transencode_coef_controller(), ucvector_init_buffer(), usb_stream_input(), and virtual_usb_trans().

enum { ... } buffer_state[NB_BUFFERS]

Referenced by main(), pdca_adc_interrupt_handler(), and pdca_usart_interrupt_handler().

int i_r

Referenced by main(), and pdca_usart_interrupt_handler().

int i_w

Referenced by main(), and pdca_adc_interrupt_handler().

char* pbuffer_r

Referenced by main(), pdca_usart_interrupt_handler(), and set_new_dac_buffer().

char* pbuffer_w

Referenced by main(), pdca_adc_interrupt_handler(), and pdca_interrupt_handler().

return

Initial value:

{









  
  Enable_global_exception()

Low-level initialization routine called during startup, before the main function.

volatile int state

state machine variable

Referenced by ai_usb_ms_audio_nav_mov(), cmd_ping(), console_schedule_cmd(), decode_mcu(), decode_mcu_DC_first(), main(), navauto_mov_explorer(), navauto_mov_playlist(), navauto_open(), navauto_setpos(), netif_add(), pdca_adc_interrupt_handler(), and sd_mmc_select_slot().

A_ALIGNED char tbuffer[BUFFER_SIZE/4+4]

Transfer buffer.

Referenced by main().