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Commands on EEPROM
So, I found this in my mailbox today:
http://i43.tinypic.com/2qu3rjc.jpg An AT24C02 EEPROM with a wopping 256 bytes of data :p Since EEPROMS are very very easy to program, this is a very quick way to make your custom OH instantly very awesome! But, since I am an extreme hardware guy (and a little low on software knowlegde), what to put on them?? Howto: -download a picture and set it as ambiance? -download and install a program? -change settings? -start a daemon? Also, they are dirt-cheap. |
Re: Commands on EEPROM
Also, GITHUB has this page
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Re: Commands on EEPROM
Well, 256 bytes don't hold very impressive images or sounds. that's for sure :D
I'd imagine what you can put there is an URL that gets downloaded by the system when you insert the EEPROM, for example. Now you'd need to write up a daemon that gets kicked when an EEPROM of the signature you have gets inserted to I2C... |
Re: Commands on EEPROM
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Otherwise, how does read/write cycles in NFS tags and EEPROMs compare, when they are used to periodically store temporary data? |
Re: Commands on EEPROM
Remember that the VDD in toh is 3.3V, and I2C levels are 1.8V CMOS, so the EEPROM might not talk with you.
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Anyway, the question was not 'if' but 'how'! What kind of commands could you put on there? |
Re: Commands on EEPROM
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VinHIlow = VCCx0.7V (aka CMOS) and when VCC is 3.3V, means that SDA/SCL needs to be ~2.3V to make sure them to be high. (Ref AT24C02 datasheet) |
Re: Commands on EEPROM
Okay, then i put an regulator in between that outputs 2 volt to the Vcc of the EEPROM, problem solved. At least for trial fase.
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Re: Commands on EEPROM
In recent developments, the qwerty-oh is upgraded with a 1.8V voltage regulator, which mean I will very probably also stick an EEPROM on there.
Has anyone -by chance- come by some EEPROM commands for Sailfish? |
Re: Commands on EEPROM
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An eeprom is programmed by electric signals on designated addressbusses and will output whatever you put in their. Those instructions can then be used by microcontrollers, or TOH, interpreting the output. http://www.engineersgarage.com/elect...s/24c02-eeprom |
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