Help with I2C bus

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esmeise8
Posts: 1
Joined: Mon Jan 19, 2015 6:43 pm

Help with I2C bus

Post by esmeise8 » Fri Mar 20, 2015 10:45 pm

Hi

I would like to know what is the I2C adress in order to use the function : rp_I2cRead (int addr, char *data, int length) and rp_I2cWrite (int addr, char *data, int length) ?

Thanks for your help !
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Nils Roos
Posts: 1441
Joined: Sat Jun 07, 2014 12:49 pm
Location: Königswinter

Re: Help with I2C bus

Post by Nils Roos » Fri Mar 20, 2015 10:53 pm

That depends on which device you want to address. The on-board EEPROMs for example have 0x50 and 0x51.

I2C devices usually provide a way to assign one from a range of addresses or have a fixed one. Consult the device's datasheet for details.
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