s_accelerometer.c File Reference

#include <stdio.h>
#include "s_accelerometer.h"
#include "board.h"
#include "gpio.h"
#include "pm.h"
#include "adc.h"

Data Structures
struct	S_acc_conv_t

Functions
static void	acc_get_value (volatile avr32_adc_t *adc, unsigned char adc_channel_x, unsigned char adc_channel_y, unsigned char adc_channel_z, xyz_t *val)
static char	acc_slow ()
static void	accelerometer_action_x (char *buf)
static void	accelerometer_action_y (char *buf)
void	accelerometer_init (void)
	Init the accelerometer driver. More...
void	accelerometer_measure (U32 angle, char *buf)
	Measures the accelerometer values and converts them to X and Y angles. More...
static void	xyz_diff (xyz_t p, xyz_t q, xyz_t *r)
static int	xyz_sumsq (xyz_t p)

Variables
Avr32_acc_t	acc
struct S_acc_conv_t	acc_table []
volatile avr32_adc_t *	adc = (volatile avr32_adc_t *) &AVR32_ADC
unsigned char	adc_channel_x = 1
unsigned char	adc_channel_y = 2
unsigned char	adc_channel_z = 3
xyz_t	g_angle

static void acc_get_value ( volatile avr32_adc_t *  adc, unsigned char  adc_channel_x, unsigned char  adc_channel_y, unsigned char  adc_channel_z, xyz_t *  val  )

static

References ACC_SHIFT, adc_disable(), adc_enable(), adc_get_value(), adc_start(), xyz_t::x, xyz_t::y, and xyz_t::z.

Referenced by accelerometer_measure().

static char acc_slow ( )

static

References ACC_QUIET_HI, ACC_QUIET_LO, and Avr32_acc_t::ak2.

Referenced by accelerometer_action_x(), and accelerometer_action_y().

static void accelerometer_action_x ( char *  buf )

static

References abs, acc_slow(), acc_table, Avr32_acc_t::ak, S_acc_conv_t::angle, S_acc_conv_t::sin, xyz_t::x, and xyz_t::z.

Referenced by accelerometer_measure().

static void accelerometer_action_y ( char *  buf )

static

References abs, acc_slow(), acc_table, Avr32_acc_t::ak, S_acc_conv_t::angle, S_acc_conv_t::sin, xyz_t::y, and xyz_t::z.

Referenced by accelerometer_measure().

void accelerometer_init

(

void

)

Init the accelerometer driver.

References adc, adc_configure(), and gpio_enable_module_pin().

Referenced by device_full_custom_task_init().

void accelerometer_measure	(	U32	angle,
		char *	buf
	)

Measures the accelerometer values and converts them to X and Y angles.

Parameters

angle	Boolean (0 for X-angle, 1 for Y-angle)
buf	char buffer in which the light sensor value is stored.

References acc_get_value(), accelerometer_action_x(), accelerometer_action_y(), adc, adc_channel_x, adc_channel_y, adc_channel_z, Avr32_acc_t::ak, Avr32_acc_t::ak2, Avr32_acc_t::g, Avr32_acc_t::k, Avr32_acc_t::m, xyz_t::x, xyz_diff(), xyz_sumsq(), xyz_t::y, and xyz_t::z.

Referenced by device_full_custom_task().

static void xyz_diff ( xyz_t  p, xyz_t  q, xyz_t *  r  )

static

References xyz_t::x, xyz_t::y, and xyz_t::z.

Referenced by accelerometer_measure().

static int xyz_sumsq ( xyz_t  p )

static

References xyz_t::x, xyz_t::y, and xyz_t::z.

Referenced by accelerometer_measure().

Avr32_acc_t acc

Initial value:

= {
   
   .m = { .x=0 , .y=0 , .z=0 } ,

   
   .left = 0 ,
   .right = 0 ,
   .up = 0 ,
   .down = 0 ,
   .topdown = 0 ,

   
   .k = { .x=ACC_ZERO_X , .y=ACC_ZERO_Y , .z=ACC_ZERO_Z } ,  
   .ak = { .x=0 , .y=0 , .z=0 } ,
   .ak2 = 0 ,

   
   .g = { .x=ACC_ZERO_X , .y=ACC_ZERO_Y , .z=ACC_MIN } ,  
   .ag = { .x=0 , .y=0 , .z=0 } ,
   .ag2 = 0 ,
   .s = { .x=0 , .y=0 , .z=0 } ,
   .s2 = 0
}

struct S_acc_conv_t acc_table[]

Initial value:

=
{  {  .sin=(U16)(SIN90 * ACC_1G), .angle=90}
,  {  .sin=(U16)(SIN85 * ACC_1G), .angle=85}
,  {  .sin=(U16)(SIN80 * ACC_1G), .angle=80}
,  {  .sin=(U16)(SIN75 * ACC_1G), .angle=75}
,  {  .sin=(U16)(SIN70 * ACC_1G), .angle=70}
,  {  .sin=(U16)(SIN65 * ACC_1G), .angle=65}
,  {  .sin=(U16)(SIN60 * ACC_1G), .angle=60}
,  {  .sin=(U16)(SIN55 * ACC_1G), .angle=55}
,  {  .sin=(U16)(SIN50 * ACC_1G), .angle=50}
,  {  .sin=(U16)(SIN45 * ACC_1G), .angle=45}
,  {  .sin=(U16)(SIN40 * ACC_1G), .angle=40}
,  {  .sin=(U16)(SIN35 * ACC_1G), .angle=35}
,  {  .sin=(U16)(SIN30 * ACC_1G), .angle=30}
,  {  .sin=(U16)(SIN25 * ACC_1G), .angle=25}
,  {  .sin=(U16)(SIN20 * ACC_1G), .angle=20}
,  {  .sin=(U16)(SIN15 * ACC_1G), .angle=15}
,  {  .sin=(U16)(SIN10 * ACC_1G), .angle=10}
,  {  .sin=(U16)(SIN5  * ACC_1G), .angle=5 }
,  {  .sin=(U16)(SIN0  * ACC_1G), .angle=0 }
}

Referenced by accelerometer_action_x(), and accelerometer_action_y().

volatile avr32_adc_t* adc = (volatile avr32_adc_t *) &AVR32_ADC

Referenced by accelerometer_init(), accelerometer_measure(), b_light_get_value(), and b_temperature_get_value().

unsigned char adc_channel_x = 1

Referenced by accelerometer_measure().

unsigned char adc_channel_y = 2

Referenced by accelerometer_measure().

unsigned char adc_channel_z = 3

Referenced by accelerometer_measure().

xyz_t g_angle