Using Softcklock (RTC) together with Dcf77.lib?

DG7GJ · Joined: 21 Jan 2010 Posts: 6

Hello!

I confused since days:
An Softclock with an 32,768kHz Crystal at Timer2 in Asyncron-Modus via "Config Clock = Soft" will rum without problems.
But if I use "Config Dcf77..." the compiler will always ignore the asynchron Timer2 always.

I dosen't matter if I configure the Timer2 with

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

first of all try the sample, dcf77 you will find it under datetime sample
then try to add a timer
JP

Evert :-) · Joined: 18 Feb 2005 Posts: 2156

If you are using dcf77 then there is already a softclock running so I don't think you can run 2 clocks at the same time.

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

Whoooo Evert Smile

2000 post !

Bravo !
JP Wink

Evert :-) · Joined: 18 Feb 2005 Posts: 2156

Missed that !
2000 posts in 12 year, that's a lot of hours typing.

What I find even more incredible is my an#148, that has been downloaded now 158000 times.

Thanks JP
Now 2001 posts, time for some champagne.

albertsm · Joined: 09 Apr 2004 Posts: 5920 Location: Holland

Well done Evert !

mat-sche · Joined: 02 Apr 2006 Posts: 13

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

Hi,
the problem is : DCF77 routine used by bascom use or not the soft clock var from Bascom (_sec _min,.... _year) ? yes it does ! I checked.

Because bad reception on DCF77 I don't use it any more, now I use DS3231 RTC, it is very accurate.
And, I think you can use it with DCF77 if you need a better accuracy.
I give you the .inc file, if you want to use it you need to replace the Bascom clock var (_sec _min,.... _year) with your own variables
You can found some shield with DS3231 for less than a good crystal. because some 32...k crystal are very bad, I tested some with a frequency meter

add in you main prog

$lib "i2c_twi.lbx" ' we do not use software emulated I2C but the TWI
' Configure the SCL and SDA pins
Config Sda = Portd.1
Config Scl = Portd.0
'--------------constant--------------------------------------------------------------------------
Const Ds3231r = &B11010001 'Ds3231 is very similar to DS1307 but it include a precise crystal
Const Ds3231w = &B11010000

and put the GND of M3260 common with DS3231...
JP Wink

mat-sche · Joined: 02 Apr 2006 Posts: 13

Hello JP

Thank's for your replay!
Currently I use the ds 1307 RTC-Chip from Dallas.
My Think it was, the best way is I use a softclock with a µC and a high precission quarz on the tosc 1/2 pin from controller and use the dcf signal to update from time to time the internal clock data.
Now I'm looking for a method to change the dcf lib. It's possible this?

Duval JP · Joined: 22 Jun 2004 Posts: 1161 Location: France

I make a mistake, I reed to fast the .lib file, the var are different but the lib use the
Getdatetime:
Setdate:
Settime:

where these var are called. please read the config clock chapter in the help about these label, my inc file is done with these help file.

I don't know enough assembler and the lib to help you more.

so If you modified the lib, you have to make a copy before !
Let me know for the future.
"bon courage"
JP

albertsm · Joined: 09 Apr 2004 Posts: 5920 Location: Holland

i think this has been asked before and if i remember there is even code for it, but i am not sure.
when using dcf77 there are multiple variables created.
the most important ones :

Dcf_sec As Byte
Dcf_min As Byte
Dcf_hour As Byte
Dcf_day As Byte
Dcf_month As Byte
Dcf_year As Byte
Dcf_weekday As Byte

you can check those and/or fill them. for other dcf variables, check the report.