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RE: RTC format
- To: "'Trenton D. Adams'" <tadams at extremeeng dot com>,"'eCos Discussion'" <ecos-discuss at sourceware dot cygnus dot com>
- Subject: RE: [ECOS] RTC format
- From: "Trenton D. Adams" <tadams at extremeeng dot com>
- Date: Mon, 16 Jul 2001 15:15:16 -0600
- Organization: Extreme Engineering
I just noticed it's a 1Hz clock so I assume it's stored in seconds from
1980? I don't think 49,710 years will be a problem! :)
> -----Original Message-----
> From: ecos-discuss-owner@sources.redhat.com
> [mailto:ecos-discuss-owner@sources.redhat.com] On Behalf Of
> Trenton D. Adams
> Sent: Monday, July 16, 2001 3:10 PM
> To: 'eCos Discussion'
> Subject: [ECOS] RTC format
>
>
> Is there a standard format for RTCs? I don't know what to
> write to the RTC 32-bit register to set it. I came up with
> my own hh:mm:ss.xxx format for storage in a 32 bit
> register, but I wonder if it's compatible? After all, I
> certainly hope it's not based on ms from some date because
> it would only store 49.xxx days then.
>
> bit | measurement
> _________________
> 27-23 | hours
> 22-17 | minutes
> 16-10 | seconds
> 9-0 | milliseconds
>
>