The Debian maps the i2c-0 to i2c0, and i2c-1 to i2c2, if you use echo BB-I2C2 > /sys/devices/bone_capemgr.????/slots this enables i2c-2 maped to i2c1 on BBB in all cases the bus is configured with pull-ups, be careful with capacitance in line, long wires can add... i2c0 - internal i2c1 - pins 17-18 i2c2 - pins 19-20 Maycon
On Saturday, October 26, 2013 4:38:27 PM UTC-2, Joshua Datko wrote: > > > In the default Debian imagine, can any I2C bus be used from the P9 > expansion header, without rebuilding the kernel? If so, which pins? (19 & > 20, or 17 & 18?) > > When I run i2cdetect, I have two I2C buses, but I'm not sure which buses > they map to on the BBB: > > i2c-0 i2c OMAP I2C adapter I2C adapter > i2c-1 i2c OMAP I2C adapter I2C adapter > > Assuming I have a working I2C slave device, if I wire SDA to P9_20, SCL to > P9_19, 3.3V power to P9_3, GND to P9_1, would one expect the device to show > up on the i2c bus (the breakout board already has a pull-up resistor)? > > Josh > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
