From: jobarjo <jobarjo78_at_yahoo.fr>
Date: Thu, 01 Apr 2004 14:39:52 +0200

Fernando Birra wrote:

>Hi again,
>
>
>
>>"jobarjo" <jobarjo78_at_yahoo.fr> escreveu na mensagem
>>
>>
>news:406BF99F.60506_at_yahoo.fr...
>
>
>>maybe you should just forget the 6 cd organisation? When you press 'CD6'
>>button, does the HU automatically displays 'cd number 6' or is it the
>>rockbox that tells it the number to display?
>>
>>
>
>When I press CD6 on the headunit a message request to switch to CD6 is sent
>to the AJB. I need to acknowledge the request but I think I can send a reply
>telling that instead of CD6 we are in CD1 or any other CD number. The text
>is displayed by the headunit it self. However it uses the contents of the
>message replyed from the CD changer to display the right numbers. For
>instance, imagine we pressed CD 5 but the CD changer finds errors on in and
>reverts to the previous CD. The headunit displays whatever we tell it that
>we are playing. The format is however fixed to one digit per disc number and
>2 digits per track. The display is in the form: CD X-YY.
>
>
>
>
>>whatever, if you press 'CD6' twice, does the rockbox receive 2
>>notification of the cd6 button?
>>
>>
>
>In that case only one request is sent to the rockbox. The headunit is a
>little bit inteligent and it finds that we are switching to the current disc
>so no action is needed.
>
>
>
>>In this case you just map these actions as standard rockbox buttons. you
>>just have to post an entry in the button_queue. the rockbox will do the
>>rest.
>>this way you have the entire rockbox behaviour through your HU. maybe
>>you could use the talkbox feature also?
>>
>>
>
>I see... To tell you the truth, having to memorize what each button
>represents doesn't atract me. Also, the problem that the headunit filters
>the key presses imposes additional restrictions. I thought of using the scan
>(Play Intro) button to virtualize the the 6 Cds. Let's say I would switch
>intro play mode twice in a short period (1-2 seconds). This could be mappe
>to play discs 7-12. The problem is that the available set of headunit
>buttons that we can use is not large enough. Apart from the disc access
>buttons (1-6) that have the problem I mentioned, there is a Scan (Intro)
>button and a Random button, apart from the Previous and Next Tracks.
>
>Thinking better now, perhaps some of the 6 direct disc access buttons could
>be used for whatever I wish. Suppose I press button 3, I could reply that we
>are still inside CD1 and that way, a second press on the same button would
>generate the event again... Maybe the HU can be fooled ;)
>
>
yeah just fool it!

>Now, suppose I map HU keys to rockbox buttons. I would need a way to receive
>feedback. Although I can also display text on the HU display, this can only
>be done while the HU is in idle mode. The HU is used to display the time and
>so there is a button that toggles from FM or CD display to Clock display. To
>display a message on the HU display I simply change a message as if I were
>some other component on the bus letting the HU know the current time (a time
>broadcast message to be more specific). The message is limited to 7 chars
>and I have beed using this facility to debug. However, as soon as I press a
>key on the HU the display mode will switch to Normal Mode (CD or RADIO
>display modes) and any feedback text that I would like to display will only
>be visible after 5 or 6 seconds of inactivity. I guess the talkbox feature
>
>
I see.
maybe the sony HU does the same also. I think you just need the time and
the track number to be updated regularly.
access to the menus might be a little useless? This is the same for the
sony. maybe you just need to display the songname?
we should have also some more extended buttons so we should not rely too
much on feedback.
for example 'next folder', 'prev folder'

>could help in this situation. I've been working hard on this and I have
>missed most of the discussions about this feature. What can it do? I suppose
>it plays some pre-recorded clips as a feedback right? Could it be used to
>"read" folder names (even if we need to store an mp3 file inside each
>folder)?
>
>
Haven't tried it yet but it seems really cool. If a blind user can use
rockbox confortably, a driver can use it also, and it is much more secure!

>
>
>>another advantage is that the buttons are still available and there is
>>no 'cd changer mode' it can cohabit easily.
>>you can look in serial.c and button.c in the firmware dir.
>>
>>
>>
>
>The jukebox buttons are still available (as I said, I exit this special mode
>if I press the STOP button). The only thing that is missing are the remote
>buttons because I need to reprogram the Rx pin to my own purposes. Of
>course, as you suggest, the jukebox could be simultaneously operated on the
>HU and on its keypad...
>
>Fernando Birra
>
>
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>
>
>

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Received on 2004-04-01