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crystal_lattice
Joined: 13 Jun 2006
Posts: 164
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| EEPROM Help needed, please |
 Posted: Tue Jun 13, 2006 12:16 pm |
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Hi, im using a 16f877 pic with a ds1302 RTC.
I want to make a basic datalogger that logs the date & time and a value, say a 16bit value. Using 93LC66 as external eeprom. My plan is to convert the date & time to a 32bit value to save space. my problem is that the two values differ in size, will that complicate the eeprom write?
I am a beginner so take it easy on me.
1) Does any one have a good explanation of how the eeprom is structured so that i can visualize it so i can understand it better? I am new to this eeprom memory and a good explanation will help me alot.
2) Does anyone have a working example of a program that uses the 93LC66 or the 24LC00, just so i can check if all my hardware is working, then i can modify/ experiment in my own time. As in somthing i can take 'as is' and compile it and it works.
Thanx in advance! |
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Mark
Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA
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| Re: EEPROM Help needed, please |
| Posted: Tue Jun 13, 2006 12:53 pm |
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| Quote: | Hi, im using a 16f877 pic with a ds1302 RTC.
I want to make a basic datalogger that logs the date & time and a value, say a 16bit value. Using 93LC66 as external eeprom. My plan is to convert the date & time to a 32bit value to save space. my problem is that the two values differ in size, will that complicate the eeprom write?
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No. You will only write 8 bits anyways.
| Quote: |
1) Does any one have a good explanation of how the eeprom is structured so that i can visualize it so i can understand it better? I am new to this eeprom memory and a good explanation will help me alot.
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Yes. It is called a datasheet.
| Quote: |
2) Does anyone have a working example of a program that uses the 93LC66 or the 24LC00, just so i can check if all my hardware is working, then i can modify/ experiment in my own time. As in somthing i can take 'as is' and compile it and it works.
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The drivers are in the drivers directly. There are plenty of examples in the examples directory as well as tons of info on this forum. |
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