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  Topic: Problem with set_port_b on PIC16F1847
jake1272

Replies: 2
Views: 11064

PostForum: General CCS C Discussion   Posted: Sat Apr 24, 2021 10:10 am   Subject: Problem with set_port_b on PIC16F1847
Hi everyone I am working with PIC16F1847 and I want to configure the pin RB0 as input but every time I am getting an Undefined identifier set_port_b_tris from the compilier.
Could you please let ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Tue Apr 13, 2021 6:02 am   Subject: Problem with DS3231 and PIC16F1847
FWIW...
I posted my 'basic DS3231 driver' code in the code library. While it doesn't do 'alarms', I know it works,at least on the 18F46k22, 26k22 devices. I modified DS1307 code( device address, some ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Tue Apr 13, 2021 4:00 am   Subject: Problem with DS3231 and PIC16F1847
Er. On the 16F1847, the default pin location for I2C1 is pins B1 & B4,
which clashes with the button locations shown...
You are going to have to switch to using software I2C or move some of
the ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Tue Apr 13, 2021 3:55 am   Subject: Problem with DS3231 and PIC16F1847
Do a web search for:
rtc 165:165:
Read all the hits and see if any of it might apply to your problem.

Thanks, PCM programmer here is what I have found:
The I2C interface is accessible whenever ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Tue Apr 13, 2021 1:58 am   Subject: Problem with DS3231 and PIC16F1847
Hi Jerson, If I don't include I2C1 in #use I2C(MASTER, I2C1, SLOW = 100000, STREAM = DS3231_STREAM), I can edit date, time alarms. But with I2C1 included the LCD is blank.
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Tue Apr 13, 2021 12:13 am   Subject: Problem with DS3231 and PIC16F1847
I
removed the I2C1 and the LCD does display the date and time in a wrong format and the time it is not running as well.

Post what you see on the LCD.
Post the date which shows in a wrong for ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Mon Apr 12, 2021 8:25 am   Subject: Problem with DS3231 and PIC16F1847
To begin with debugging your code, I would

* comment all calls to the RTC driver functions.
* Replace the print statement with dummy values for each variable you print
* If you succeed with this ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Mon Apr 12, 2021 8:19 am   Subject: Problem with DS3231 and PIC16F1847
That RTC has an 'osc-enable' bit, maybe the driver doesn't enable the enable ?? It 'should', by default be enabled, at least for a 5 volt PIC, if my fuzzy memory serves me right. You do HAVE a battery ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Mon Apr 12, 2021 7:53 am   Subject: Problem with DS3231 and PIC16F1847
In the main code :


I removed the I2C1 and the LCD does display the date and time in a wrong format and the time it is not running as well
#use I2C(MASTER, SLOW = 100000, STREAM = DS3231_ ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Mon Apr 12, 2021 1:44 am   Subject: Problem with DS3231 and PIC16F1847
Similar DS3231:https://www.digitspace.com/ds3231-rtc-module-real-time-clock-module-at24c32-high-accuracy
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Mon Apr 12, 2021 1:01 am   Subject: Problem with DS3231 and PIC16F1847
I think you mean that you're using a module with a battery installed on
the back side of the board.

Is there a battery installed ? Can you measure the voltage of it ?

Yes there is a battery i ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Mon Apr 12, 2021 12:43 am   Subject: Problem with DS3231 and PIC16F1847
Yes, I have done that as well. Sad I even replaced the DS3231 still
What are your connections to the Vbat and RST pins on the ds3231 ?

What is the voltage on the Vcc pin of the ds3231 ?

What ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Mon Apr 12, 2021 12:32 am   Subject: Problem with DS3231 and PIC16F1847
Found it !!!! well, I think so....

https://simple-circuit.com/ds3231-rtc-driver-ccs-c-compiler/

He had the driver in the original post, but removed it, as moderator thought it was an official CC ...
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Sun Apr 11, 2021 12:38 pm   Subject: Problem with DS3231 and PIC16F1847
Yes, I have done that as well. Sad I even replaced the DS3231 still
  Topic: Problem with DS3231 and PIC16F1847
jake1272

Replies: 45
Views: 99511

PostForum: General CCS C Discussion   Posted: Sun Apr 11, 2021 10:39 am   Subject: Problem with DS3231 and PIC16F1847
Big key difference between the working test and the problem code is
selecting fast_io. Don't. 99% of CCS code does not use fast_io...

Thanks for the suggestion I have removed that, still it doesn' ...
 
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