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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2016 by Roman Stolyarov
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "cpu.h"
#include "button.h"
#include "button-target.h"
#include "powermgmt.h"
#include "kernel.h"
#include "backlight.h"
#include "logf.h"
#include "adc.h"
#define PIN_BTN_POWER (32*0+30)
#define PIN_BTN_HOLD (32*1+15)
#define PIN_KEY_INT (32*4+13)
#define KEY_INT_IRQ GPIO141
#define PIN_CHARGE_CON (32*1+7)
#define PIN_PH_DECT (32*1+11)
#define IRQ_PH_DECT GPIO_IRQ(PIN_PH_DECT)
#define GPIO_PH_DECT GPIO43
#define PIN_LO_DECT (32*1+12)
#define IRQ_LO_DECT GPIO_IRQ(PIN_LO_DECT)
#define GPIO_LO_DECT GPIO44
static volatile unsigned short bat_val,key_val;
bool headphones_inserted(void)
{
return (__gpio_get_pin(PIN_PH_DECT) != 0);
}
void button_init_device(void)
{
key_val = 0xfff;
__gpio_as_input(PIN_BTN_POWER);
__gpio_as_input(PIN_BTN_HOLD);
__gpio_disable_pull(PIN_BTN_POWER);
__gpio_disable_pull(PIN_BTN_HOLD);
#if 0
/* We poll this, no need to set it up for an interrupt */
__gpio_as_irq_fall_edge(PIN_KEY_INT);
system_enable_irq(GPIO_IRQ(PIN_KEY_INT));
#endif
__gpio_set_pin(PIN_CHARGE_CON); /* 0.7 A */
__gpio_as_output(PIN_CHARGE_CON);
__gpio_as_input(PIN_LO_DECT);
__gpio_as_input(PIN_PH_DECT);
__gpio_disable_pull(PIN_LO_DECT);
__gpio_disable_pull(PIN_PH_DECT);
}
bool button_hold(void)
{
return (__gpio_get_pin(PIN_BTN_HOLD) ? true : false);
}
int button_read_device(void)
{
static bool hold_button = false;
bool hold_button_old;
hold_button_old = hold_button;
hold_button = (__gpio_get_pin(PIN_BTN_HOLD) ? true : false);
int btn = BUTTON_NONE;
bool gpio_btn = (__gpio_get_pin(PIN_BTN_POWER) ? false : true);
REG_SADC_ADCFG = ADCFG_VBAT_SEL + ADCFG_CMD_AUX(1);
REG_SADC_ADENA = ADENA_VBATEN + ADENA_AUXEN;
#ifndef BOOTLOADER
if (hold_button != hold_button_old) {
backlight_hold_changed(hold_button);
}
if (hold_button) {
return BUTTON_NONE;
}
#endif
if (gpio_btn)
btn |= BUTTON_POWER;
if (key_val < 261)
btn |= BUTTON_VOL_UP;
else
if (key_val < 653)
btn |= BUTTON_VOL_DOWN;
else
if (key_val < 1101)
btn |= BUTTON_PREV;
else
if (key_val < 1498)
btn |= BUTTON_NEXT;
else
if (key_val < 1839)
btn |= BUTTON_PLAY;
else
if (key_val < 2213)
btn |= BUTTON_OPTION;
else
if (key_val < 2600)
btn |= BUTTON_HOME;
return btn;
}
/* called on button press interrupt */
void KEY_INT_IRQ(void)
{
}
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
/* 5% */
3634
};
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
/* 0% */
3300
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
{ 3300, 3652, 3704, 3730, 3753, 3786, 3836, 3906, 3973, 4061, 4160 }
};
#if CONFIG_CHARGING
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
const unsigned short percent_to_volt_charge[11] =
{ 3300, 3652, 3704, 3730, 3753, 3786, 3836, 3906, 3973, 4061, 4160 };
#endif /* CONFIG_CHARGING */
/* VBAT = (BDATA/1024) * 2.5V */
#define BATTERY_SCALE_FACTOR 2460
/* Returns battery voltage from ADC [millivolts] */
int _battery_voltage(void)
{
return (bat_val*BATTERY_SCALE_FACTOR)>>10;
}
void adc_init(void)
{
bat_val = 0xfff;
__cpm_start_sadc();
mdelay(10);
REG_SADC_ADENA = 0; /* Power Up */
mdelay(70);
REG_SADC_ADSTATE = 0;
REG_SADC_ADCTRL = ADCTRL_MASK_ALL - ADCTRL_ARDYM - ADCTRL_VRDYM;
REG_SADC_ADCFG = ADCFG_VBAT_SEL + ADCFG_CMD_AUX(1);
REG_SADC_ADCLK = (4 << 16) | (1 << 8) | 59; /* 200KHz */
system_enable_irq(IRQ_SADC);
}
void adc_close(void)
{
REG_SADC_ADENA = ADENA_POWER; /* Power Down */
__intc_mask_irq(IRQ_SADC);
mdelay(20);
__cpm_stop_sadc();
}
/* Interrupt handler */
void SADC(void)
{
unsigned char state;
unsigned char sadcstate;
sadcstate = REG_SADC_ADSTATE;
state = REG_SADC_ADSTATE & (~REG_SADC_ADCTRL);
REG_SADC_ADSTATE &= sadcstate;
if(state & ADCTRL_ARDYM)
{
key_val = REG_SADC_ADADAT;
}
if(state & ADCTRL_VRDYM)
{
bat_val = REG_SADC_ADVDAT;
}
}
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