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Eeprom question

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TaiChipy
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Eeprom question
Posted: Thu Feb 10, 2005 5:55 am

How to write some number let's say "5" into memory. Then read it and display it on LCD. Becuse i have to increase each number, after each button click, what is the best way to make this work... button press 5 -- write to memory read from memory display until next button click 6 -- write to memory ..... Thanx in advance

Guest

Re: Eeprom question

Posted: Thu Feb 10, 2005 7:28 am

Reply with quote

TaiChipy wrote:

How to write some number let's say "5" into memory.
Then read it and display it on LCD.

Becuse i have to increase each number, after each button click,
what is the best way to make this work...

button press
5 -- write to memory
read from memory
display until next button click
6 -- write to memory .....

After the button press, you would increment a variable in RAM at the next button click, then store it in EEPROM. You might want to read back the variable you just saved in EEPROM and verify if it matches the variable you have in RAM. Reason why i say this is - suppose the write to the EEPROM location failed for some reason or another. You don't want to display the wrong character on the LCD.

As it stands though, your pseudocode should work just fine.

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