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added sampling mode in sound sensor

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This commit is contained in:
joxe 2008-04-25 15:55:37 +00:00
parent 57dedee38f
commit 7be3aeeeb5
2 changed files with 50 additions and 3 deletions
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46
platform/esb/dev/sound-sensor.c
View File

@ -28,24 +28,32 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: sound-sensor.c,v 1.1 2006/06/18 07:49:33 adamdunkels Exp $
* @(#)$Id: sound-sensor.c,v 1.2 2008/04/25 15:55:37 joxe Exp $
*/
#include <stdlib.h>
#include "contiki-esb.h"
#include "dev/irq.h"
#define MIC_MIN_SENS 150
#define SAMPLE 1
const struct sensors_sensor sound_sensor;
static unsigned int sound, micdiff, micmax, avgmax;
char sound_pause;
static int8_t mode;
static int8_t sample_div;
static int8_t ctr;
static int16_t *sample_buffer;
static int buffer_size;
static int buf_pos;
/*---------------------------------------------------------------------------*/
static void
init(void)
{
/* Initialization of ADC12 done by irq */
mode = 0;
}
/*---------------------------------------------------------------------------*/
static int
@ -55,6 +63,20 @@ irq(void)
if (!sound_pause) {
micdiff = micdiff + abs(ADC12MEM4 - sound) - (micdiff >> 3);
if(mode == SAMPLE) {
leds_invert(LEDS_RED);
ctr++;
if(ctr >= sample_div) {
ctr = 0;
sample_buffer[buf_pos++] = ADC12MEM4;
if(buf_pos >= buffer_size) {
mode = 0;
leds_off(LEDS_RED);
sensors_changed(&sound_sensor);
}
}
}
/* if (micdiff > MIC_MIN_SENS) { */
/* sensors_changed(&sound_sensor); */
@ -84,7 +106,6 @@ irq(void)
sound = ADC12MEM4;
return 0;
}
/*---------------------------------------------------------------------------*/
@ -93,6 +114,10 @@ activate(void)
{
sound = micdiff = micmax = 0;
sound_pause = 0;
mode = 0;
ctr = 0;
sample_div = 0;
buf_pos = 0;
avgmax = 5000;
irq_adc12_activate(&sound_sensor, 4, INCH_0 + SREF_0);
}
@ -123,12 +148,29 @@ value(int type)
static int
configure(int type, void *c)
{
if(type == SOUND_SET_BUFFER_PTR) {
sample_buffer = (int16_t *) c;
} else if (type == SOUND_SET_BUFFER_SIZE) {
buffer_size = (int) c;
} else if (type == SOUND_SET_DIV) {
sample_div = (int8_t) c;
} else if(type == SOUND_START_SAMPLE) {
if(buffer_size > 0) {
leds_on(LEDS_RED);
buf_pos = 0;
ctr = 0;
mode = SAMPLE;
}
}
return 0;
}
/*---------------------------------------------------------------------------*/
static void *
status(int type)
{
if(type == SOUND_SAMPLING) {
return (void *) (mode == SAMPLE);
}
return NULL;
}
/*---------------------------------------------------------------------------*/

7
platform/esb/dev/sound-sensor.h
View File

@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: sound-sensor.h,v 1.1 2006/06/18 07:49:33 adamdunkels Exp $
* @(#)$Id: sound-sensor.h,v 1.2 2008/04/25 15:55:37 joxe Exp $
*/
#ifndef __SOUND_SENSOR_H__
#define __SOUND_SENSOR_H__
@ -38,5 +38,10 @@
extern const struct sensors_sensor sound_sensor;
#define SOUND_SENSOR "Sound"
#define SOUND_SET_BUFFER_PTR 1
#define SOUND_SET_BUFFER_SIZE 2
#define SOUND_START_SAMPLE 3
#define SOUND_SET_DIV 4
#define SOUND_SAMPLING 1
#endif /* __SOUND_SENSOR_H__ */