Hi together,
I was wondering whether sending a message on the I2C bus to the address 0x00 actually results in a General Call when using Arduinos Wire library for all clients. The detailed reference of the Wire library [1] states that this option is deactivated by default. I have been looking around in the forum and there was some talk about using the General Call but as far as I see there were no Arduino slaves involved.
Note that in the Wire library, the TWGCE bit is not set. This means that the Arduino will not respond to the I2C General Call address (address 0x00, which is basically an I2C broadcast).
Would I have to activate this option by setting that bit? Why is it deactivated anyway?
Thanks and Cheers
ff