Rockbox

  • Status Closed
  • Percent Complete
    0%
  • Task Type Feature Requests
  • Category Applications
  • Assigned To No-one
  • Operating System Sansa e200
  • Severity Low
  • Priority Very Low
  • Reported Version Daily build (which?)
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by casainho - 2007-11-07
Last edited by pondlife - 2007-11-07

FS#8110 - Dimming Sansa wheel light

I would like to see wheel light fade in/fade out. I think that should not be difficult to implement in software, maybe PWM, changing the duty-cycle.

Also the constant quantity of light in wheel.

Its a question of harmony, as the natural light of sun reach us, fading in on morning and out on evening. Rapid transitions are not natural to humans and I believe that behavior passes some stress to us, for example in illumination on our houses (at least in mine, here in Portugal).

Closed by  zagor

Reason for closing:  
Additional comments about closing:   Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407

Closing all feature requests.

GodEater commented on 2007-11-07 17:00

For reference - this is a request for the sansa.

casainho commented on 2007-11-07 17:29

Please see more information for the request and ideas at the mesage in the forum:
http://forums.rockbox.org/index.php?topic=13628.msg102659

casainho commented on 2007-11-21 19:45

I got it :-) - I had to make function that runs with hight frequency, in this case, every 100us. First I tried with tick_add_task(); but It was not enought the 100Hz.

Now I need to have the timeout wheel light working and after put a menu entry in options for configure the value of the wheel_light_quantity.

FILE: firmware/drivers/button.c

timer_register(1, NULL, TIMER_FREQ/10000, 1, wheel_light_quantity_isr); /* Call “wheel_light_quantity_isr” every 100us. */

static signed char wheel_light_quantity = 10; /* 10% of light in whell. */

static void wheel_light_quantity_isr(void)
{ 

  static char pwm_counter = 0;
  if (wheel_light_quantity == 0) /* wheel_light turned off. */
  {
       GPIOG_OUTPUT_VAL &=~ 0x80; /*  Button light OFF. */
       return;
  }
  if (++pwm_counter > 100)
      pwm_counter = 1;
  if (pwm_counter <= wheel_light_quantity)
      GPIOG_OUTPUT_VAL |= 0x80; /*  Button light ON. */

  else
      GPIOG_OUTPUT_VAL &=~ 0x80; /*  Button light OFF. */

}

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