ctr_mcu/trunk/adc.c
fujita_ryohei 282ee86c5f 0B
git-svn-id: file:///Volumes/Transfer/gigaleak_20231201/2020-05-23%20-%20ctr.7z%20+%20svn_v1.068.zip/ctr/svn/ctr_mcu@43 013db118-44a6-b54f-8bf7-843cb86687b1
2009-12-09 07:19:13 +00:00

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7.4 KiB
C
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/* ========================================================
藤田@開技
nintendo
'09 Apr
======================================================== */
#include "incs.h"
#include "adc.h"
#include "pm.h"
#include "led.h"
bit adc_updated;
#define INTERVAL_TSK_ADC 16
/* ========================================================
ADC設定と、開始
以下のピンは主にここで操作・監視されます。
・BT_TEMP,_P
・ADIN1
・VOL
関係ありそうですが別のところで管理しています
・PM_BT_DET,_P PM_init
・8tics毎に呼ばれ、チャンネル分取り込むとADCを停止します。
 タスク起動時、レジスタには前回の取り込み値が入っています。
======================================================== */
void tsk_adc( )
{
static u8 task_interval = 0;
static u8 old_tune;
static u8 sndvol_codec;
static u8 bt_temp_old;
if( task_interval-- != 0 )
{
return;
}
else
{
task_interval = (u8)( INTERVAL_TSK_ADC / SYS_INTERVAL_TICK );
}
if( adc_updated )
{
if( system_status.pwr_state == ON )
{
// Tune //
#if 0
tune ・フ変化では割り込みを入れない
// tune
if( abs( old_tune - vreg_ctr[VREG_TUNE] ) >= 4 )
{
old_tune = vreg_ctr[VREG_TUNE];
vreg_ctr[VREG_C_IRQ0] |= REG_BIT_VR_TUNE_CHANGE;
if( ( vreg_ctr[VREG_C_IRQ_MASK0] & REG_BIT_VR_TUNE_CHANGE ) == 0 )
{
IRQ0_ast;
}
}
#endif
// Volume //
{
static u8 vol_old;
static u8 class_old;
u8 class;
static u8 tokidoki = 0; // todo ポーリングは不要になる予定
if( abs( vol_old - vreg_ctr[VREG_C_SND_VOL] ) > 3 )
{
vol_old = vreg_ctr[VREG_C_SND_VOL];
// TWLに通知してやる
vreg_twl[ REG_TWL_INT_ADRS_VOL ] = vol_old / ( 256 / 32 );
// 割り込みはHorizonを通してコマンドを発行されるのを待てばよい
class = vreg_ctr[VREG_C_SND_VOL] / ( 256 / 8 );
if( class != class_old )
{
class_old = class;
set_irq( VREG_C_IRQ0, REG_BIT_VR_SNDVOL_CHANGE );
}
}
// デバイスに伝える
if(( sndvol_codec != vreg_ctr[VREG_C_SND_VOL] )
|| ( tokidoki == 0 ))
{
sndvol_codec = vreg_ctr[VREG_C_SND_VOL];
// DCPにも伝えておく
iic_mcu_write_a_byte( IIC_SLA_DCP, 0,
sndvol_codec / 2 + sndvol_codec / 4 ); // 簡易スケーリング todo
// codecに伝える
iic_mcu_write_a_byte( IIC_SLA_CODEC, CODEC_REG_VOL,
127 - ( sndvol_codec / 2 + sndvol_codec / 4 )/2 );
}
tokidoki += 1;
}
// TUNE_LED //
// ここで?仕様?
{
switch ( vreg_ctr[VREG_C_LED_TUNE] )
{
case LED_TUNE_ILM_ON:
LED_duty_TUNE = vreg_ctr[VREG_C_LED_BRIGHT];
break;
case LED_TUNE_ILM_SVR:
LED_duty_TUNE = vreg_ctr[VREG_C_TUNE] / 16;
break;
case LED_TUNE_ILM_OFF:
default:
LED_duty_TUNE = 0;
break;
}
}
adc_updated = 0;
}
}
ADCEN = 1;
ADM = 0b00011011; // セレクトモード、章圧、fCLK/6 ///ここから ↓
ADPC = 0x02; // ADCポートのセレクト
ADS = ADC_SEL_AMB_BRIT;
// NOP();
ADCS = 1; // AD開始。 /// ここまで  までに1us以上開ける
ADIF = 0;
ADMK = 0;
}
/* ========================================================
 過去つのminでもMAXでもない値を返す
 突発的なノイズを除く。
 根本対策ではないが、これはこれで使い道がある。
======================================================== */
static u8 getmean3( u8 * hist )
{
if( *hist > *( hist + 1 ) )
{
if( *hist > *( hist + 2 ) )
{
return( ( *( hist + 1 ) > *( hist + 2 ) ) ? *( hist + 1 ) : *( hist + 2 ) );
}
else
{
return( *hist );
}
}else{
if( *hist > *( hist + 2 ) )
{
return( *hist );
}
else
{
return( ( *( hist + 1 ) < *( hist + 2 ) ) ? *( hist + 1 ) : *( hist + 2 ) );
}
}
}
/* ========================================================
 自前で次のチャンネル
  一通り終わったら止める
======================================================== */
__interrupt void int_adc( )
{
static u8 hist_tune[3];
static u8 hist_snd_vol[3];
static u8 hist_bt_temp[3];
static u8 index;
u8 temp;
EI( );
switch ( ADS )
{
case ( ADC_SEL_AMB_BRIT ):
vreg_ctr[ VREG_C_AMBIENT_BRIGHTNESS ] = ADCRH;
break;
case ( ADC_SEL_GYRO_YAW ):
vreg_ctr[ VREG_C_GYRO_YAW ] = ADCRH;
break;
case ( ADC_SEL_GYRO_PITCH ):
vreg_ctr[ VREG_C_GYRO_PITCH ] = ADCRH;
break;
case ( ADC_SEL_GYRO_ROLL ):
vreg_ctr[ VREG_C_GYRO_ROLL ] = ADCRH;
break;
case ( ADC_SEL_TUNE ):
hist_tune[index] = ADCRH;
#ifdef _MODEL_WM0_
vreg_ctr[ VREG_C_TUNE ] = 255 - getmean3( hist_tune );
#else
vreg_ctr[ VREG_C_TUNE ] = getmean3( hist_tune );
#endif
break;
case ( ADC_SEL_VOL ):
hist_snd_vol[index] = ADCRH;
vreg_ctr[VREG_C_SND_VOL] = getmean3( hist_snd_vol );
break;
case ( ADC_SEL_BATT_TEMP ):
hist_bt_temp[index] = ADCRH;
raw_adc_temperature = getmean3( hist_bt_temp );
renge_task_immed_add( PM_bt_temp_update );
break;
case ( ADC_SEL_BATT_DET ):
// vreg_ctr[ VREG_C_DBG_BATT_DET ] = ADCRH;
// todo
break;
}
// もっとまともな書き方がありそうだ
// if( ADS == ADC_SEL_BATT_DET ){b
if( ADS != ADC_SEL_BATT_TEMP )
{ // 電池判別は電源投入の一回のみ
ADS += 1; // 次のチャンネル
BT_TEMP_P = 1; // 電池温度監視スタート
}
else
{
ADCEN = 0; // 止めてしまう
BT_TEMP_P = 0; // 電池温度監視スタート
adc_updated = 1;
index = ( index == 2 ) ? 0 : ( index + 1 );
}
}
/* ========================================================
tsk_adcと競合することを考慮していません。
======================================================== */
u8 get_adc( u8 ch )
{
u8 temp;
ADMK = 1;
ADIF = 0;
ADCEN = 1;
ADCS = 0;
ADM = 0b00100011; // セレクトモード、昇圧、fCLK/6 ///ここから↓
ADPC = 0x02; // ADCポートのセレクト
ADS = ch;
ADCS = 1; // AD開始。 /// ここまで↑ に、1us以上開ける
ADMK = 0;
while( ADIF == 0 ){;}
temp = ADCRH;
ADCEN = 0;
return ( temp );
}