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A few questions about eeprom 24AA12 and 16F690
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Arakel



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PostPosted: Sat Mar 25, 2017 9:58 am     Reply with quote
temtronic wrote:
One hardware problem I see in your schematic is your MAX232. It needs 4 caps for the charge pump to properly work. Now the old(original) 'MAX232' used 10mfd caps, newer ones smaller value, but still 4 caps. Just Google image 'max232', you'll see what I mean.
Since I never use a simulator, I can't comment on the results but you need to add 'errors' to the #use RS232( ...options....) so the hardware UART won't lockup, freeze when more than 2 characters come from the PC.

Jay


This is probably the problem, no "errors". For the caps, I saw both options and the 2 caps on VS+/VS- were connected to ground, however on most examples in google, there was 1 cap with no ground.

[img]https://www.dropbox.com/s/4pfkdntebkg31rq/RS232-16F690-2caps.jpg?dl=0[/img]

I will test with this and see what happens.
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Yo! I love learning and technology! I just do not have experience so do not be angry if I ask a stupid question about a detail! From so much to remember sometimes I forget the details in order to remember the big problems!
Arakel



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PostPosted: Sat Mar 25, 2017 10:38 am     Reply with quote
Since I can't do much to return the favour, if anyone needs anything with computers, ask! To solve a problem, say which is better and which is not, etc.
_________________
Yo! I love learning and technology! I just do not have experience so do not be angry if I ask a stupid question about a detail! From so much to remember sometimes I forget the details in order to remember the big problems!
Arakel



Joined: 06 Aug 2016
Posts: 107
Location: Moscow

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Latest version after the revision
PostPosted: Tue Apr 18, 2017 9:22 am     Reply with quote
After reading the datasheet, I got to this, but it does not work, I get from the EEPROM "10100001" which is the "control byte".

Source code:
https://www.dropbox.com/s/rs5njdodryrgs1r/i2c-CCS.txt?dl=0

Schematic:
https://www.dropbox.com/s/80eg1twryy3y6up/i2c-CCS.jpg?dl=0
_________________
Yo! I love learning and technology! I just do not have experience so do not be angry if I ask a stupid question about a detail! From so much to remember sometimes I forget the details in order to remember the big problems!
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