| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese |
| * Revisions copyright (C) 2005 by Gerald Van Baren |
| * |
| * All files in this archive are subject to the GNU General Public License. |
| * See the file COPYING in the source tree root for full license agreement. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| #include "config.h" |
| #include "cpu.h" |
| #include "kernel.h" |
| #include "thread.h" |
| #include "system.h" |
| #include "debug.h" |
| #include "panic.h" |
| #include "adc.h" |
| #include "string.h" |
| #include "sprintf.h" |
| #include "ata.h" |
| #include "power.h" |
| #include "button.h" |
| #include "ata.h" |
| #include "audio.h" |
| #include "mp3_playback.h" |
| #include "usb.h" |
| #include "powermgmt.h" |
| #include "backlight.h" |
| #include "lcd.h" |
| #include "rtc.h" |
| #ifdef CONFIG_TUNER |
| #include "fmradio.h" |
| #endif |
| #ifdef HAVE_UDA1380 |
| #include "uda1380.h" |
| #elif HAVE_TLV320 |
| #include "tlv320.h" |
| #endif |
| #ifdef HAVE_LCD_BITMAP |
| #include "font.h" |
| #endif |
| #include "logf.h" |
| #include "lcd-remote.h" |
| |
| /* |
| * Define DEBUG_FILE to create a csv (spreadsheet) with battery information |
| * in it (one sample per minute). This is only for very low level debug. |
| */ |
| #undef DEBUG_FILE |
| #if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL) |
| #include "file.h" |
| #define DEBUG_FILE_NAME "/powermgmt.csv" |
| #define DEBUG_MESSAGE_LEN 133 |
| static char debug_message[DEBUG_MESSAGE_LEN]; |
| #define DEBUG_STACK ((0x1000)/sizeof(long)) |
| static int fd; /* write debug information to this file */ |
| static int wrcount; |
| #else |
| #define DEBUG_STACK 0 |
| #endif |
| |
| static int shutdown_timeout = 0; |
| |
| #ifdef SIMULATOR /***********************************************************/ |
| |
| int battery_level(void) |
| { |
| return 75; |
| } |
| |
| int battery_time(void) |
| { |
| return 500; |
| } |
| |
| bool battery_level_safe(void) |
| { |
| return battery_level() >= 10; |
| } |
| |
| void set_poweroff_timeout(int timeout) |
| { |
| (void)timeout; |
| } |
| |
| void set_battery_capacity(int capacity) |
| { |
| (void)capacity; |
| } |
| |
| void reset_poweroff_timer(void) |
| { |
| } |
| |
| |
| #else /* not SIMULATOR ******************************************************/ |
| |
| static const int poweroff_idle_timeout_value[15] = |
| { |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 30, 45, 60 |
| }; |
| |
| static const unsigned int battery_level_dangerous[BATTERY_TYPES_COUNT] = |
| { |
| #if CONFIG_BATTERY == BATT_LIION2200 /* FM Recorder, LiIon */ |
| 280 |
| #elif CONFIG_BATTERY == BATT_3AAA /* Ondio */ |
| 310, 345 /* alkaline, NiHM */ |
| #elif CONFIG_BATTERY == BATT_LIPOL1300 /* iRiver H1x0 */ |
| 339 |
| #else /* Player/recorder, NiMH */ |
| 475 |
| #endif |
| }; |
| |
| static const short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = |
| /* voltages (centivolt) of 0%, 10%, ... 100% when charging disabled */ |
| { |
| #if CONFIG_BATTERY == BATT_LIION2200 |
| /* measured values */ |
| { 260, 285, 295, 303, 311, 320, 330, 345, 360, 380, 400 } |
| #elif CONFIG_BATTERY == BATT_3AAA |
| /* measured values */ |
| { 280, 325, 341, 353, 364, 374, 385, 395, 409, 427, 475 }, /* alkaline */ |
| { 310, 355, 363, 369, 372, 374, 376, 378, 380, 386, 405 } /* NiMH */ |
| #elif CONFIG_BATTERY == BATT_LIPOL1300 |
| /* Below 337 the backlight starts flickering during HD access */ |
| { 337, 358, 365, 369, 372, 377, 383, 389, 397, 406, 413 } |
| #else /* NiMH */ |
| /* original values were taken directly after charging, but it should show |
| 100% after turning off the device for some hours, too */ |
| { 450, 481, 491, 497, 503, 507, 512, 514, 517, 525, 540 } |
| /* orig. values: ...,528,560 */ |
| #endif |
| }; |
| |
| #ifdef HAVE_CHARGING |
| /* voltages (centivolt) of 0%, 10%, ... 100% when charging enabled */ |
| static const short percent_to_volt_charge[11] = |
| { |
| /* values guessed, see |
| http://www.seattlerobotics.org/encoder/200210/LiIon2.pdf until someone |
| measures voltages over a charging cycle */ |
| 476, 544, 551, 556, 561, 564, 566, 576, 582, 584, 585 /* NiMH */ |
| }; |
| #endif /* HAVE_CHARGING */ |
| |
| #if defined(HAVE_CHARGE_CTRL) || CONFIG_BATTERY == BATT_LIION2200 |
| charge_state_type charge_state; /* charging mode */ |
| #endif |
| |
| #ifdef HAVE_CHARGING |
| /* |
| * Flag that the charger has been plugged in/removed: this is set for exactly |
| * one time through the power loop when the charger has been plugged in. |
| */ |
| static enum { |
| NO_CHARGER, |
| CHARGER_UNPLUGGED, /* transient state */ |
| CHARGER_PLUGGED, /* transient state */ |
| CHARGER |
| } charger_input_state; |
| #endif |
| |
| #ifdef HAVE_CHARGE_CTRL |
| int long_delta; /* long term delta battery voltage */ |
| int short_delta; /* short term delta battery voltage */ |
| |
| char power_message[POWER_MESSAGE_LEN] = ""; /* message that's shown in |
| debug menu */ |
| /* percentage at which charging |
| starts */ |
| int powermgmt_last_cycle_startstop_min = 0; /* how many minutes ago was the |
| charging started or |
| stopped? */ |
| int powermgmt_last_cycle_level = 0; /* which level had the |
| batteries at this time? */ |
| int trickle_sec = 0; /* how many seconds should the |
| charger be enabled per |
| minute for trickle |
| charging? */ |
| int pid_p = 0; /* PID proportional term */ |
| int pid_i = 0; /* PID integral term */ |
| #endif /* HAVE_CHARGE_CTRL */ |
| |
| /* |
| * Average battery voltage and charger voltage, filtered via a digital |
| * exponential filter. |
| */ |
| static unsigned int battery_centivolts;/* filtered battery voltage, centvolts */ |
| static unsigned int avgbat; /* average battery voltage (filtering) */ |
| #define BATT_AVE_SAMPLES 32 /* filter constant / @ 2Hz sample rate */ |
| |
| /* battery level (0-100%) of this minute, updated once per minute */ |
| static int battery_percent = -1; |
| static int battery_capacity = BATTERY_CAPACITY_MIN; /* default value, mAH */ |
| static int battery_type = 0; |
| |
| /* Power history: power_history[0] is the newest sample */ |
| unsigned short power_history[POWER_HISTORY_LEN]; |
| |
| static char power_stack[DEFAULT_STACK_SIZE + DEBUG_STACK]; |
| static const char power_thread_name[] = "power"; |
| |
| static int poweroff_timeout = 0; |
| static int powermgmt_est_runningtime_min = -1; |
| |
| static bool sleeptimer_active = false; |
| static long sleeptimer_endtick; |
| |
| static long last_event_tick; |
| |
| static void battery_status_update(void); |
| static int runcurrent(void); |
| |
| void reset_poweroff_timer(void) |
| { |
| last_event_tick = current_tick; |
| } |
| |
| #if BATTERY_TYPES_COUNT > 1 |
| void set_battery_type(int type) |
| { |
| if (type != battery_type) { |
| battery_type = type; |
| battery_status_update(); /* recalculate the battery status */ |
| } |
| } |
| #endif |
| |
| void set_battery_capacity(int capacity) |
| { |
| battery_capacity = capacity; |
| if (battery_capacity > BATTERY_CAPACITY_MAX) |
| battery_capacity = BATTERY_CAPACITY_MAX; |
| if (battery_capacity < BATTERY_CAPACITY_MIN) |
| battery_capacity = BATTERY_CAPACITY_MIN; |
| battery_status_update(); /* recalculate the battery status */ |
| } |
| |
| int battery_time(void) |
| { |
| return powermgmt_est_runningtime_min; |
| } |
| |
| /* Returns battery level in percent */ |
| int battery_level(void) |
| { |
| return battery_percent; |
| } |
| |
| /* Tells if the battery level is safe for disk writes */ |
| bool battery_level_safe(void) |
| { |
| return battery_centivolts > battery_level_dangerous[battery_type]; |
| } |
| |
| void set_poweroff_timeout(int timeout) |
| { |
| poweroff_timeout = timeout; |
| } |
| |
| void set_sleep_timer(int seconds) |
| { |
| if(seconds) { |
| sleeptimer_active = true; |
| sleeptimer_endtick = current_tick + seconds * HZ; |
| } |
| else { |
| sleeptimer_active = false; |
| sleeptimer_endtick = 0; |
| } |
| } |
| |
| int get_sleep_timer(void) |
| { |
| if(sleeptimer_active) |
| return (sleeptimer_endtick - current_tick) / HZ; |
| else |
| return 0; |
| } |
| |
| /* look into the percent_to_volt_* table and get a realistic battery level |
| percentage */ |
| static int voltage_to_percent(int voltage, const short* table) |
| { |
| if (voltage <= table[0]) |
| return 0; |
| else |
| if (voltage >= table[10]) |
| return 100; |
| else { |
| /* search nearest value */ |
| int i = 0; |
| while ((i < 10) && (table[i+1] < voltage)) |
| i++; |
| /* interpolate linear between the smaller and greater value */ |
| return (i * 10) /* Tens digit, 10% per entry */ |
| + (((voltage - table[i]) * 10) |
| / (table[i+1] - table[i])); /* Ones digit: interpolated */ |
| } |
| } |
| |
| /* update battery level and estimated runtime, called once per minute or |
| * when battery capacity / type settings are changed */ |
| static void battery_status_update(void) |
| { |
| int level; |
| |
| #ifdef HAVE_CHARGE_CTRL |
| if (charge_state == DISCHARGING) { |
| level = voltage_to_percent(battery_centivolts, |
| percent_to_volt_discharge[battery_type]); |
| } |
| else if (charge_state == CHARGING) { |
| /* battery level is defined to be < 100% until charging is finished */ |
| level = MIN(voltage_to_percent(battery_centivolts, |
| percent_to_volt_charge), 99); |
| } |
| else { /* in topoff/trickle charge, the battery is by definition 100% full */ |
| level = 100; |
| } |
| #else |
| /* always use the discharge table */ |
| level = voltage_to_percent(battery_centivolts, |
| percent_to_volt_discharge[battery_type]); |
| #endif |
| |
| #ifndef HAVE_MMC /* this adjustment is only needed for HD based */ |
| if (battery_percent == -1) { /* first run of this procedure */ |
| /* The battery voltage is usually a little lower directly after |
| turning on, because the disk was used heavily. Raise it by 5. % */ |
| level = (level > 95) ? 100 : level + 5; |
| } |
| #endif |
| battery_percent = level; |
| |
| /* calculate estimated remaining running time */ |
| /* discharging: remaining running time */ |
| /* charging: remaining charging time */ |
| #ifdef HAVE_CHARGE_CTRL |
| if (charge_state == CHARGING) { |
| powermgmt_est_runningtime_min = (100 - level) * battery_capacity / 100 |
| * 60 / (CURRENT_MAX_CHG - runcurrent()); |
| } |
| else |
| #endif |
| { |
| powermgmt_est_runningtime_min = level * battery_capacity / 100 |
| * 60 / runcurrent(); |
| } |
| } |
| |
| /* |
| * We shut off in the following cases: |
| * 1) The unit is idle, not playing music |
| * 2) The unit is playing music, but is paused |
| * |
| * We do not shut off in the following cases: |
| * 1) The USB is connected |
| * 2) The charger is connected |
| * 3) We are recording, or recording with pause |
| */ |
| static void handle_auto_poweroff(void) |
| { |
| long timeout = poweroff_idle_timeout_value[poweroff_timeout]*60*HZ; |
| int audio_stat = audio_status(); |
| |
| #ifdef HAVE_CHARGING |
| /* |
| * Inhibit shutdown as long as the charger is plugged in. If it is |
| * unplugged, wait for a timeout period and then shut down. |
| */ |
| if(charger_input_state == CHARGER || audio_stat == AUDIO_STATUS_PLAY) { |
| last_event_tick = current_tick; |
| } |
| #endif |
| |
| if(timeout && |
| #ifdef CONFIG_TUNER |
| (!radio_powered()) && |
| #endif |
| !usb_inserted() && |
| ((audio_stat == 0) || |
| ((audio_stat == (AUDIO_STATUS_PLAY | AUDIO_STATUS_PAUSE)) && |
| !sleeptimer_active))) |
| { |
| if(TIME_AFTER(current_tick, last_event_tick + timeout) && |
| TIME_AFTER(current_tick, last_disk_activity + timeout)) |
| { |
| sys_poweroff(); |
| } |
| } |
| else |
| { |
| /* Handle sleeptimer */ |
| if(sleeptimer_active && !usb_inserted()) |
| { |
| if(TIME_AFTER(current_tick, sleeptimer_endtick)) |
| { |
| audio_stop(); |
| #if defined(HAVE_CHARGING) && !defined(HAVE_POWEROFF_WHILE_CHARGING) |
| if((charger_input_state == CHARGER) || |
| (charger_input_state == CHARGER_PLUGGED)) |
| { |
| DEBUGF("Sleep timer timeout. Stopping...\n"); |
| set_sleep_timer(0); |
| backlight_off(); /* Nighty, nighty... */ |
| } |
| else |
| #endif |
| { |
| DEBUGF("Sleep timer timeout. Shutting off...\n"); |
| sys_poweroff(); |
| } |
| } |
| } |
| } |
| } |
| |
| /* |
| * Estimate how much current we are drawing just to run. |
| */ |
| static int runcurrent(void) |
| { |
| int current; |
| |
| #if MEM == 8 && !defined(HAVE_MMC) |
| /* assuming 192 kbps, the running time is 22% longer with 8MB */ |
| current = (CURRENT_NORMAL*100/122); |
| #else |
| current = CURRENT_NORMAL; |
| #endif /* MEM == 8 */ |
| |
| if(usb_inserted() |
| #if defined(HAVE_USB_POWER) && (CURRENT_USB < CURRENT_NORMAL) |
| || usb_powered() |
| #endif |
| ) |
| { |
| current = CURRENT_USB; |
| } |
| |
| #if defined(CONFIG_BACKLIGHT) && !defined(BOOTLOADER) |
| if (backlight_get_current_timeout() == 0) /* LED always on */ |
| current += CURRENT_BACKLIGHT; |
| #endif |
| |
| return(current); |
| } |
| |
| |
| /* Check to see whether or not we've received an alarm in the last second */ |
| #ifdef HAVE_ALARM_MOD |
| static void power_thread_rtc_process(void) |
| { |
| if (rtc_check_alarm_flag()) { |
| rtc_enable_alarm(false); |
| } |
| } |
| #endif |
| |
| /* |
| * This function is called to do the relativly long sleep waits from within the |
| * main power_thread loop while at the same time servicing any other periodic |
| * functions in the power thread which need to be called at a faster periodic |
| * rate than the slow periodic rate of the main power_thread loop. |
| * |
| * While we are waiting for the time to expire, we average the battery |
| * voltages. |
| */ |
| static void power_thread_sleep(int ticks) |
| { |
| int small_ticks; |
| |
| while (ticks > 0) { |
| |
| #ifdef HAVE_CHARGING |
| /* |
| * Detect charger plugged/unplugged transitions. On a plugged or |
| * unplugged event, we return immediately, run once through the main |
| * loop (including the subroutines), and end up back here where we |
| * transition to the appropriate steady state charger on/off state. |
| */ |
| if(charger_inserted()) { |
| switch(charger_input_state) { |
| case NO_CHARGER: |
| case CHARGER_UNPLUGGED: |
| charger_input_state = CHARGER_PLUGGED; |
| return; |
| case CHARGER_PLUGGED: |
| queue_broadcast(SYS_CHARGER_CONNECTED, NULL); |
| charger_input_state = CHARGER; |
| break; |
| case CHARGER: |
| break; |
| } |
| } else { /* charger not inserted */ |
| switch(charger_input_state) { |
| case NO_CHARGER: |
| break; |
| case CHARGER_UNPLUGGED: |
| queue_broadcast(SYS_CHARGER_DISCONNECTED, NULL); |
| charger_input_state = NO_CHARGER; |
| break; |
| case CHARGER_PLUGGED: |
| case CHARGER: |
| charger_input_state = CHARGER_UNPLUGGED; |
| return; |
| } |
| } |
| #endif |
| |
| small_ticks = MIN(HZ/2, ticks); |
| sleep(small_ticks); |
| ticks -= small_ticks; |
| |
| /* If the power off timeout expires, the main thread has failed |
| to shut down the system, and we need to force a power off */ |
| if(shutdown_timeout) { |
| shutdown_timeout -= small_ticks; |
| if(shutdown_timeout <= 0) |
| power_off(); |
| } |
| |
| #ifdef HAVE_ALARM_MOD |
| power_thread_rtc_process(); |
| #endif |
| |
| /* |
| * Do a digital exponential filter. We don't sample the battery if |
| * the disk is spinning unless we are in USB mode (the disk will most |
| * likely always be spinning in USB mode). |
| */ |
| if (!ata_disk_is_active() || usb_inserted()) { |
| avgbat = avgbat - (avgbat / BATT_AVE_SAMPLES) + |
| adc_read(ADC_UNREG_POWER); |
| /* |
| * battery_centivolts is the centivolt-scaled filtered battery value. |
| */ |
| battery_centivolts = ((avgbat / BATT_AVE_SAMPLES) * |
| BATTERY_SCALE_FACTOR) / 10000; |
| } |
| #if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL) |
| /* |
| * If we have a lot of pending writes or if the disk is spining, |
| * fsync the debug log file. |
| */ |
| if((wrcount > 10) || |
| ((wrcount > 0) && ata_disk_is_active())) { |
| fsync(fd); |
| wrcount = 0; |
| } |
| #endif |
| } |
| } |
| |
| |
| /* |
| * This power thread maintains a history of battery voltage |
| * and implements a charging algorithm. |
| * For a complete description of the charging algorithm read |
| * docs/CHARGING_ALGORITHM. |
| */ |
| |
| static void power_thread(void) |
| { |
| int i; |
| short *phps, *phpd; /* power history rotation pointers */ |
| #ifdef HAVE_CHARGE_CTRL |
| unsigned int target_voltage; /* desired topoff/trickle voltage level */ |
| int charge_max_time_now = 0; /* max. charging duration, calculated at |
| beginning of charging */ |
| #endif |
| |
| /* initialize the voltages for the exponential filter */ |
| |
| avgbat = adc_read(ADC_UNREG_POWER) * BATT_AVE_SAMPLES; |
| battery_centivolts = ((avgbat / BATT_AVE_SAMPLES) * BATTERY_SCALE_FACTOR) / 10000; |
| |
| #if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL) |
| fd = -1; |
| wrcount = 0; |
| #endif |
| |
| while (1) |
| { |
| /* rotate the power history */ |
| phpd = &power_history[POWER_HISTORY_LEN - 1]; |
| phps = phpd - 1; |
| for (i = 0; i < POWER_HISTORY_LEN-1; i++) |
| *phpd-- = *phps--; |
| |
| /* insert new value at the start, in centivolts 8-) */ |
| power_history[0] = battery_centivolts; |
| |
| /* update battery status every minute */ |
| battery_status_update(); |
| |
| #if CONFIG_BATTERY == BATT_LIION2200 |
| /* We use the information from the ADC_EXT_POWER ADC channel, which |
| tells us the charging current from the LTC1734. When DC is |
| connected (either via the external adapter, or via USB), we try |
| to determine if it is actively charging or only maintaining the |
| charge. My tests show that ADC readings below about 0x80 means |
| that the LTC1734 is only maintaining the charge. */ |
| if(charger_inserted()) { |
| if(adc_read(ADC_EXT_POWER) < 0x80) { |
| charge_state = TRICKLE; |
| } else { |
| charge_state = CHARGING; |
| } |
| } else { |
| charge_state = DISCHARGING; |
| } |
| #endif /* # if CONFIG_BATTERY == BATT_LIION2200 */ |
| |
| #ifdef HAVE_CHARGE_CTRL |
| if (charger_input_state == CHARGER_PLUGGED) { |
| pid_p = 0; |
| pid_i = 0; |
| snprintf(power_message, POWER_MESSAGE_LEN, "Charger plugged in"); |
| /* |
| * The charger was just plugged in. If the battery level is |
| * nearly charged, just trickle. If the battery is low, start |
| * a full charge cycle. If the battery level is in between, |
| * top-off and then trickle. |
| */ |
| if(battery_percent > START_TOPOFF_CHG) { |
| powermgmt_last_cycle_level = battery_percent; |
| powermgmt_last_cycle_startstop_min = 0; |
| if(battery_percent >= START_TRICKLE_CHG) { |
| charge_state = TRICKLE; |
| } else { |
| charge_state = TOPOFF; |
| } |
| } else { |
| /* |
| * Start the charger full strength |
| */ |
| i = CHARGE_MAX_TIME_1500 * battery_capacity / 1500; |
| charge_max_time_now = |
| i * (100 + 35 - battery_percent) / 100; |
| if (charge_max_time_now > i) { |
| charge_max_time_now = i; |
| } |
| snprintf(power_message, POWER_MESSAGE_LEN, |
| "ChgAt %d%% max %dm", battery_level(), |
| charge_max_time_now); |
| |
| /* enable the charger after the max time calc is done, |
| because battery_level depends on if the charger is |
| on */ |
| DEBUGF("power: charger inserted and battery" |
| " not full, charging\n"); |
| powermgmt_last_cycle_level = battery_percent; |
| powermgmt_last_cycle_startstop_min = 0; |
| trickle_sec = 60; |
| long_delta = short_delta = 999999; |
| charge_state = CHARGING; |
| } |
| } |
| if (charge_state == CHARGING) { |
| snprintf(power_message, POWER_MESSAGE_LEN, |
| "Chg %dm, max %dm", powermgmt_last_cycle_startstop_min, |
| charge_max_time_now); |
| /* |
| * Check the delta voltage over the last X minutes so we can do |
| * our end-of-charge logic based on the battery level change. |
| */ |
| if (powermgmt_last_cycle_startstop_min > CHARGE_MIN_TIME) { |
| short_delta = power_history[0] - |
| power_history[CHARGE_END_NEGD - 1]; |
| } |
| if (powermgmt_last_cycle_startstop_min > CHARGE_END_ZEROD) { |
| /* |
| * Scan the history: if we have a big delta in the middle of |
| * our history, the long term delta isn't a valid end-of-charge |
| * indicator. |
| */ |
| long_delta = power_history[0] - |
| power_history[CHARGE_END_ZEROD - 1]; |
| for(i = 0; i < CHARGE_END_ZEROD; i++) { |
| if(((power_history[i] - power_history[i+1]) > 5) || |
| ((power_history[i] - power_history[i+1]) < -5)) { |
| long_delta = 888888; |
| break; |
| } |
| } |
| } |
| |
| /* |
| * End of charge criteria (any qualify): |
| * 1) Charged a long time |
| * 2) DeltaV went negative for a short time |
| * 3) DeltaV was close to zero for a long time |
| * Note: short_delta and long_delta are centivolts |
| */ |
| if ((powermgmt_last_cycle_startstop_min > charge_max_time_now) || |
| (short_delta <= -5) || (long_delta < 5)) |
| { |
| if (powermgmt_last_cycle_startstop_min > charge_max_time_now) { |
| DEBUGF("power: powermgmt_last_cycle_startstop_min > charge_max_time_now, " |
| "enough!\n"); |
| /* have charged too long and deltaV detection did not |
| work! */ |
| snprintf(power_message, POWER_MESSAGE_LEN, |
| "Chg tmout %d min", charge_max_time_now); |
| /* |
| * Switch to trickle charging. We skip the top-off |
| * since we've effectively done the top-off operation |
| * already since we charged for the maximum full |
| * charge time. |
| */ |
| powermgmt_last_cycle_level = battery_percent; |
| powermgmt_last_cycle_startstop_min = 0; |
| charge_state = TRICKLE; |
| } else { |
| if(short_delta <= -5) { |
| DEBUGF("power: short-term negative" |
| " delta, enough!\n"); |
| snprintf(power_message, POWER_MESSAGE_LEN, |
| "end negd %d %dmin", short_delta, |
| powermgmt_last_cycle_startstop_min); |
| } else { |
| DEBUGF("power: long-term small " |
| "positive delta, enough!\n"); |
| snprintf(power_message, POWER_MESSAGE_LEN, |
| "end lowd %d %dmin", long_delta, |
| powermgmt_last_cycle_startstop_min); |
| } |
| /* |
| * Switch to top-off charging. |
| */ |
| powermgmt_last_cycle_level = battery_percent; |
| powermgmt_last_cycle_startstop_min = 0; |
| charge_state = TOPOFF; |
| } |
| } |
| } |
| else if (charge_state > CHARGING) /* top off or trickle */ |
| { |
| /* Time to switch from topoff to trickle? |
| */ |
| if ((charge_state == TOPOFF) && |
| (powermgmt_last_cycle_startstop_min > TOPOFF_MAX_TIME)) |
| { |
| powermgmt_last_cycle_level = battery_percent; |
| powermgmt_last_cycle_startstop_min = 0; |
| charge_state = TRICKLE; |
| } |
| /* |
| * Adjust trickle charge time (proportional and integral terms). |
| * Note: I considered setting the level higher if the USB is |
| * plugged in, but it doesn't appear to be necessary and will |
| * generate more heat [gvb]. |
| */ |
| if(charge_state == TOPOFF) |
| target_voltage = TOPOFF_VOLTAGE; |
| else |
| target_voltage = TRICKLE_VOLTAGE; |
| |
| pid_p = target_voltage - battery_centivolts; |
| if((pid_p > PID_DEADZONE) || (pid_p < -PID_DEADZONE)) |
| pid_p = pid_p * PID_PCONST; |
| else |
| pid_p = 0; |
| if(battery_centivolts < target_voltage) { |
| if(pid_i < 60) { |
| pid_i++; /* limit so it doesn't "wind up" */ |
| } |
| } else { |
| if(pid_i > 0) { |
| pid_i--; /* limit so it doesn't "wind up" */ |
| } |
| } |
| |
| trickle_sec = pid_p + pid_i; |
| |
| if(trickle_sec > 60) { |
| trickle_sec = 60; |
| } |
| if(trickle_sec < 0) { |
| trickle_sec = 0; |
| } |
| |
| } else if (charge_state == DISCHARGING) { |
| trickle_sec = 0; |
| /* |
| * The charger is enabled here only in one case: if it was |
| * turned on at boot time (power_init). Turn it off now. |
| */ |
| if (charger_enabled) |
| charger_enable(false); |
| } |
| |
| if (charger_input_state == CHARGER_UNPLUGGED) { |
| /* |
| * The charger was just unplugged. |
| */ |
| DEBUGF("power: charger disconnected, disabling\n"); |
| |
| charger_enable(false); |
| powermgmt_last_cycle_level = battery_percent; |
| powermgmt_last_cycle_startstop_min = 0; |
| trickle_sec = 0; |
| pid_p = 0; |
| pid_i = 0; |
| charge_state = DISCHARGING; |
| snprintf(power_message, POWER_MESSAGE_LEN, "Charger: discharge"); |
| } |
| |
| #endif /* HAVE_CHARGE_CTRL*/ |
| |
| /* sleep for a minute */ |
| |
| #ifdef HAVE_CHARGE_CTRL |
| if(trickle_sec > 0) { |
| charger_enable(true); |
| power_thread_sleep(HZ * trickle_sec); |
| } |
| if(trickle_sec < 60) |
| charger_enable(false); |
| power_thread_sleep(HZ * (60 - trickle_sec)); |
| #else |
| power_thread_sleep(HZ * 60); |
| #endif |
| |
| #if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL) |
| if(usb_inserted()) { |
| if(fd >= 0) { |
| /* It is probably too late to close the file but we can try... */ |
| close(fd); |
| fd = -1; |
| } |
| } else { |
| if(fd < 0) { |
| fd = open(DEBUG_FILE_NAME, O_WRONLY | O_APPEND | O_CREAT); |
| if(fd >= 0) { |
| snprintf(debug_message, DEBUG_MESSAGE_LEN, |
| "cycle_min, bat_centivolts, bat_percent, chgr_state, charge_state, pid_p, pid_i, trickle_sec\n"); |
| write(fd, debug_message, strlen(debug_message)); |
| wrcount = 99; /* force a flush */ |
| } |
| } |
| if(fd >= 0) { |
| snprintf(debug_message, DEBUG_MESSAGE_LEN, "%d, %d, %d, %d, %d, %d, %d, %d\n", |
| powermgmt_last_cycle_startstop_min, battery_centivolts, |
| battery_percent, charger_input_state, charge_state, pid_p, pid_i, trickle_sec); |
| write(fd, debug_message, strlen(debug_message)); |
| wrcount++; |
| } |
| } |
| #endif |
| handle_auto_poweroff(); |
| |
| #ifdef HAVE_CHARGE_CTRL |
| powermgmt_last_cycle_startstop_min++; |
| #endif |
| } |
| } |
| |
| void powermgmt_init(void) |
| { |
| /* init history to 0 */ |
| memset(power_history, 0x00, sizeof(power_history)); |
| |
| create_thread(power_thread, power_stack, sizeof(power_stack), |
| power_thread_name); |
| } |
| |
| #endif /* SIMULATOR */ |
| |
| void sys_poweroff(void) |
| { |
| logf("sys_poweroff()"); |
| /* If the main thread fails to shut down the system, we will force a |
| power off after an 8 second timeout */ |
| shutdown_timeout = HZ*8; |
| |
| queue_post(&button_queue, SYS_POWEROFF, NULL); |
| } |
| |
| /* Various hardware housekeeping tasks relating to shutting down the jukebox */ |
| void shutdown_hw(void) |
| { |
| #ifndef SIMULATOR |
| #if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL) |
| if(fd >= 0) { |
| close(fd); |
| fd = -1; |
| } |
| #endif |
| audio_stop(); |
| #ifdef HAVE_LCD_BITMAP |
| glyph_cache_save(); |
| #endif |
| ata_flush(); |
| ata_spindown(1); |
| while(ata_disk_is_active()) |
| sleep(HZ/10); |
| |
| mp3_shutdown(); |
| #ifdef HAVE_UDA1380 |
| uda1380_close(); |
| #elif HAVE_TLV320 |
| tlv320_close(); |
| #endif |
| backlight_off(); |
| lcd_set_contrast(0); |
| #ifdef HAVE_REMOTE_LCD |
| remote_backlight_off(); |
| lcd_remote_set_contrast(0); |
| #endif |
| power_off(); |
| #endif /* #ifndef SIMULATOR */ |
| } |