Connect two Teensy´s and Audio Shield via I2C

[itsunreal]

Hello,

i would like to connect a Teensy 3.2 (with Audio Shield) with a Teensy 3.6 via I2C. The Teensy 3.2 should operate as the slave and the 3.6 as the master. But when i send a message from the 3.6 to the 3.2, then the 3.2 is crashing, the audio don´t play and no message received. I think this is because the audio shield is also using the I2C. How can I fix that?

 

[Theremingenieur]

I2C0 is used by the audio library in master mode to control the SG5000. Thus, for any communication in slave mode, you'd need to use I2C1, accessible through the bottom pads 29 and 30 (SCL1 and SDA1).