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Old 02-14-2013, 08:34 PM   #41 (permalink)
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Canadian version 082

I haven't worked on this for quite awhile, but here is the version I am using - it does have the feature you want, I think.

I don't know about the clock crystal, probably it will work fine.

Mike

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Old 02-15-2013, 08:33 AM   #42 (permalink)
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Originally Posted by mluckham View Post
I haven't worked on this for quite awhile, but here is the version I am using - it does have the feature you want, I think.

I don't know about the clock crystal, probably it will work fine.

Mike
Thank you very much ! I'll try it right now...
If you use a 20Mhz then to avoid any problems i will just hook up one when i am going to built the simplified mpguino board.

Thank you! Hail Canada

Also to add this version (0.82) can not be compiled with latest IDE But version (0.81) can , just to help other users

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Old 02-15-2013, 08:49 AM   #43 (permalink)
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I made few minor changes to be able to be compiled with the latest 1.0.3 ide
i hope this doesn't bother you
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Old 02-19-2013, 03:35 AM   #44 (permalink)
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Mike,

I have a problem with both v0.81 and v0.82 (haven't checked other versions). Theoretically MPGuino should save tank data to EEPROM to restore its previous state after power outage. I was testing recently standalone (not mounted in the car) MPGuino with signals feed from the generator. Anyway after I collected some data I needed to disconect it from the power. So I've waited for MPGuino to go into the sleep mode, it should save tank data then. But after connecting the power again all data was gone. I was trying to solve the issue on my own, but I'm still learning Arduino programming and I just don't have enough knowledge to find what can be wrong.

Can you help me with this issue? Any help will be appreciated
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Old 02-22-2013, 06:19 AM   #45 (permalink)
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Mike,

I have a problem with both v0.81 and v0.82 (haven't checked other versions). Theoretically MPGuino should save tank data to EEPROM to restore its previous state after power outage. I was testing recently standalone (not mounted in the car) MPGuino with signals feed from the generator. Anyway after I collected some data I needed to disconect it from the power. So I've waited for MPGuino to go into the sleep mode, it should save tank data then. But after connecting the power again all data was gone. I was trying to solve the issue on my own, but I'm still learning Arduino programming and I just don't have enough knowledge to find what can be wrong.

Can you help me with this issue? Any help will be appreciated

Andrzej it seems to me that you have a problem with your eprom , i had the same problem once with a pic that was just broken...
Did you try with another pic?

- Did you try to load the erase eprom sketch?
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Old 02-22-2013, 06:23 AM   #46 (permalink)
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I will try to erase EEPROM data and try again MPGuino. Thanks for the tip
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Old 02-22-2013, 07:00 AM   #47 (permalink)
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And if nothing happens try to find a diagnostic sketch i saw it somewhere but i can not find it ,i'll search for it later
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Old 02-22-2013, 07:33 AM   #48 (permalink)
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Cool, thanks
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Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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Old 02-24-2013, 02:09 PM   #49 (permalink)
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So I've checked EEPROM in my MPGuino and it's working fine. I was able to fill it with any value I wanted from first to the very last byte. All settings are stored in EEPROM correctly pulses per mile or us per galon etc. But saving tank data to EEPROM doesn't work. After power disconnection, no matter how long I'm waiting first after the last pulse, all tank/trip data are gone. I'm trying to find why is that but it will take a while since I need to go step by step with the code.

I'm working with Arduino UNO, Atmega328-P 16MHz
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Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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Old 02-25-2013, 06:36 AM   #50 (permalink)
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Mike,

I just wanted to ask you. What you're using I2C for? I can see that you're transfering all data from MPGuino with it, but what's the client for this data?

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