Compile issue using RTC on 1604 2.1.5

[ldalep]

My thoughts were to use an external 32Khz clock and use the millis() function to do accurate time keeping for battery app. If i read the docs correct this could be a crystal with caps on the TX and RX pins of the 1604. Move the TX, RX to optional pins. I am having problems understanding which pull down to use because they seem duplicated twice under (millis()/micros()). Trying any of them using the RTC seems to give me the following compile error

Ultimately I would like to use the power saving part but am wondering does the external 32Khz oscillator defeat the purpose

Arduino: 1.8.13 (Mac OS X), Board: "ATtiny1614/1604/814/804/414/404/214/204, No (saves space), ATtiny1604, 20 MHz Internal, 1.8V (5 MHz or less), Disabled/Disabled, EEPROM retained, RTC w/w32.768 kHz ext. crystal (1/2-series only, no micros), UPDI (pick this unless you have an HV UPDI programmer!), 8ms, Closer to 5v"

             from /Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring_private.h:26,
             from /Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring.c:23:

/Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring.c: In function 'init_millis':
/Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring.c:508:28: error: 'CLKCTRL_t {aka struct CLKCTRL_struct}' has no member named 'XOSC32KCTRLA'; did you mean 'OSC32KCTRLA'?
_PROTECTED_WRITE(CLKCTRL.XOSC32KCTRLA, CLKCTRL_CSUT_16K_gc | CLKCTRL_ENABLE_bm | CLKCTRL_RUNSTDBY_bm);
^
In file included from /Users/ldalep/Library/Arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7/avr/include/avr/io.h:722:0,
from /Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring_private.h:26,
from /Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring.c:23:
/Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring.c:508:42: error: 'CLKCTRL_CSUT_16K_gc' undeclared (first use in this function); did you mean 'CLKCTRL_PDIV_16X_gc'?
_PROTECTED_WRITE(CLKCTRL.XOSC32KCTRLA, CLKCTRL_CSUT_16K_gc | CLKCTRL_ENABLE_bm | CLKCTRL_RUNSTDBY_bm);
^
/Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring.c:508:42: note: each undeclared identifier is reported only once for each function it appears in
/Users/ldalep/Library/Arduino15/packages/megaTinyCore/hardware/megaavr/2.1.5/cores/megatinycore/wiring.c:508:64: error: 'CLKCTRL_ENABLE_bm' undeclared (first use in this function); did you mean 'CCL_ENABLE_bm'?
_PROTECTED_WRITE(CLKCTRL.XOSC32KCTRLA, CLKCTRL_CSUT_16K_gc | CLKCTRL_ENABLE_bm | CLKCTRL_RUNSTDBY_bm);
^
exit status 1
Error compiling for board ATtiny1614/1604/814/804/414/404/214/204.

[ldalep]

Sigh .... in reading the closed issues this isn’t going to do what I want .... definitely not a biggy

[SpenceKonde]

Wait for the magic sleep library yo ;-)

[SpenceKonde]

Oh, didn't you read the option? The external 32.768kHz timebase options are only available on the 1/2-series parts. You are using a 0-series part. The hardware does not support this functionality.

[ldalep]

Thank You - somewhat clearer..... It does compile if I choose 1614 but does not on the RTC choice ( I assume this is internal) .... Also I have duplicate choices for the external crystal. Not sure what happened there

[SpenceKonde]

The options are Ext. Oscillator and Ext. Crystal.

A crystal connects with two pins and is just a passive piece of precision shaped quartz in a can. An oscillator connects with one pin and requires power connection as well, and also costs a heck of a lot more :-P but frequently is more accurate.

[ldalep]

Great.... Got that now but what is simply RTC - That does not compile with 1614

[SpenceKonde]

Fixing that, trivial blunder - RTC without anything external uses the internal (low accuracy) 32 KHz ULP oscillator.

(and to answer a question well above, a watch cerystal can dissipate a minicule amount of power :-P

[ldalep]

Sorry to bug you - RTC should work on series 0 as well as 1

[SpenceKonde]

Yes, correct. But the way it's written currently, it won't even compile anywhere :-P

…

On Thu, Dec 10, 2020 at 10:01 AM ldalep ***@***.***> wrote: Sorry to bug you - RTC should work on series 0 as well as 1 — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#275 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABTXEW6YCE4A2NAWQC6HZ2DSUDPETANCNFSM4USWAZOQ> .

--

____________ Spence Konde Azzy’S Electronics New products! Check them out at tindie.com/stores/DrAzzy GitHub: github.com/SpenceKonde ATTinyCore <https://github.com/SpenceKonde/ATTinyCore>: Arduino support for all pre-2016 tinyAVR with >2k flash! megaTinyCore <https://github.com/SpenceKonde/megaTinyCore>: Arduino support for all post-2016 tinyAVR parts! DxCore <https://github.com/SpenceKonde/DxCore>: Arduino support for the AVR Dx-series parts, the latest and greatest from Microchip! Contact: spencekonde@gmail.com

[ldalep]

Thank you for the hard work and the fast turn :)

[SpenceKonde]

fix for the RTC millis issue is in github.

[ldalep]

Works great verified the crystal in hardware can't wait for the low power libraries - this gets me to the consumer / battery are that is needed