RTC calibration
Options
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2012-03-28 10:42 PM
Posted on March 29, 2012 at 07:42
Hi all,
I wanted to know is there any software workaround to compensate for negative ppm values.I am using STM32F100V8 controller. According to the rtc digital calibration manual(attached) you can only subtract the cycles(make clock slower). I just need to know how to speed up the rtc clock. Any code snippets explaining this concept would help me a lot.Please help me.
4 REPLIES 4
Options
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2012-03-30 06:34 AM
Posted on March 30, 2012 at 15:34
many have tried, none have succeeded using a RC clock for the RTC. Not using a crystal produces a URTC
ErikOptions
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2012-04-03 05:32 AM
Posted on April 03, 2012 at 14:32
> I just need to know how to speed up the rtc clock.
I suppose, you generate 1 second pulses/interrupts by RTC. So load a lower value into the RTC prescaler register.Options
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2012-04-04 05:18 AM
Posted on April 04, 2012 at 14:18
Is this the only way to speed up the rtc clock?
Options
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2012-04-05 12:06 AM
Posted on April 05, 2012 at 09:06
By the software - yes.
