Enable I2C1 and I2C2 on BBB by default

Luiz Otavio O Souza loos.br at gmail.com
Wed Feb 19 12:58:58 UTC 2014


Is there any problem if i enable the second and the third I2C controllers by default on BBB ?

ATM only the first controller is enabled and it is only used to connect the on-board devices (PMIC and HDMI framer), this iicbus isn’t exposed on the expansion headers.

The two additional controllers are exposed on P9 expansion header, the I2C1 is at pins 17 and 18 and the I2C2 is at pins 19 and 20.

The I2C2 is the default iicbus used to read the cape eeprom contents (when you have a cape installed).

Both controllers had been tested and seems to work fine on my BBB.

Regards,
Luiz




-------------- next part --------------
A non-text attachment was scrubbed...
Name: bbb-i2c.diff
Type: application/octet-stream
Size: 1432 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-arm/attachments/20140219/b1cbc431/attachment.obj>


More information about the freebsd-arm mailing list