I2C & DK3200

[christian2]

Posted on August 23, 2003 at 14:57

I2C & DK3200

[christian2]

Posted on May 17, 2011 at 11:55

I saw that the development board has a RTC using the I2C interface.

Can I use the I2C interface to communicate with 3 or 4 devices by selecting with a corresponding Chip Select? I want to know if the RTC is always enabled? Could I use I2C for communicating with other devices? Regards Christian

[simonharrison9]

Posted on May 17, 2011 at 11:55

Hi,

The idea of I2C is to allow numerous devices to communicate over only two wires. no other chip selects are requried. When you look in the datasheet for the devices you are going to use, you will see that each device has an address. You state this address during communications, so only that device responds. Hope this helps Simon

[christian2]

Posted on May 17, 2011 at 11:55

Yes thank you for your help, i was not really familiar with this protocole. By reading some I2C devices, i have seen that we have to send an address in order to wake up the device.

Thanks