Support and General Use > Hardware

iriver h1x0 - RTC (real time clock) mod

<< < (7/30) > >>

roolku:

--- Quote from: LinusN on December 26, 2006, 04:48:17 AM ---I think it was a bad idea to choose a chip that outputs a waveform on the alarm pin by default.

--- End quote ---

Possibly, but that is easy to say after the fact. At the time I was just looking for a chip with the features listed at the wiki. Could you suggest a better chip?

Also once the alarm has been set, it isn't a problem anymore. The trick seems to be to disable the play button with the hold switch on the main unit and set the alarm once with the remote.

roolku:

--- Quote from: flintstone on December 25, 2006, 06:41:27 PM ---If the alarm function works properly now,
would it be possible (...he asked with
trembling hands...) to add a patch
that started and stopped recording
based on the time of day?

--- End quote ---

Yes. But someone needs to program it. I may give it a go if I got too much spare time on my hand.

jmdearras:

--- Quote from: roolku on December 26, 2006, 05:45:27 AM ---
--- Quote from: LinusN on December 26, 2006, 04:48:17 AM ---I think it was a bad idea to choose a chip that outputs a waveform on the alarm pin by default.

--- End quote ---

Possibly, but that is easy to say after the fact. At the time I was just looking for a chip with the features listed at the wiki. Could you suggest a better chip?

Also once the alarm has been set, it isn't a problem anymore. The trick seems to be to disable the play button with the hold switch on the main unit and set the alarm once with the remote.



--- End quote ---
I have ordered a few DS3231 clock chips, with TCXO, and trim.  They are the same size, and look like the firmware will operate it without change.  Pinout is different.  And the -INT/SQW pin defaults to -INT, and it's disabled.  So no square wave on startup.

YBIC,
Jim

roolku:

--- Quote from: jmdearras on December 26, 2006, 10:07:52 AM ---I have ordered a few DS3231 clock chips, with TCXO, and trim.  They are the same size, and look like the firmware will operate it without change.  Pinout is different.  And the -INT/SQW pin defaults to -INT, and it's disabled.  So no square wave on startup.

--- End quote ---

They have indeed changed the default value for the INTCN on powerup to logic 1.

Let me know how you get on.

jmdearras:

--- Quote from: roolku on December 26, 2006, 11:25:01 AM ---
--- Quote from: jmdearras on December 26, 2006, 10:07:52 AM ---I have ordered a few DS3231 clock chips, with TCXO, and trim.  They are the same size, and look like the firmware will operate it without change.  Pinout is different.  And the -INT/SQW pin defaults to -INT, and it's disabled.  So no square wave on startup.

--- End quote ---

They have indeed changed the default value for the INTCN on powerup to logic 0.

Let me know how you get on.

--- End quote ---

I will. I actually ordered these a week ago, before I hit this issue, it was luck they fix it.  I went for the TCXOw/trim feature, as I am an accuracy freak.  It also can return it's temperature.

Navigation

[0] Message Index

[#] Next page

[*] Previous page