BeagleBone GREEN: Can't get grove devices to show up... anyone else?

Hi,

I’ve been having a hell of a time getting the BeagleBone Green to see Grove devices connected to it.

Running i2cdetect -r 0 results in the following output regardless of which Grove sensors are connected:

i2cdetect -r 0

WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-0 using read byte commands.
I will probe address range 0x03-0x77.
Continue? [Y/n] y
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – -- – -- – -- – -- – -- – -- –
10: – -- – -- – -- – -- – -- – -- – -- – --
20: – -- – -- UU – -- – -- – -- – -- – -- –
30: – -- – -- – -- – -- – -- – -- – -- – --
40: – -- – -- – -- – -- – -- – -- – -- – --
50: UU – -- – -- – -- – -- – -- – -- – -- –
60: – -- – -- – -- – -- – -- – -- – -- – --
70: – -- – -- – -- – --

Similarly, i2cdetect -r 1 always results in the following output:

i2cdetect -r 1

WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-1 using read byte commands.
I will probe address range 0x03-0x77.
Continue? [Y/n] y
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: – -- – -- – -- – -- – -- – -- –
10: – -- – -- – -- – -- – -- – -- – -- – --
20: – -- – -- – -- – -- – -- – -- – -- – --
30: – -- – -- – -- – -- – -- – -- – -- – --
40: – -- – -- – -- – -- – -- – -- – -- – --
50: – -- – -- UU UU UU UU – -- – -- – -- – --
60: – -- – -- – -- – -- – -- – -- – -- – --
70: – -- – -- – -- – --

I tried reflashing my board with the 2015-07-28 eMMC Flasher (console) image. My current uname -a output is: Linux greenbone 3.8.13-bone72 #1 SMP Tue Jun 16 21:36:04 UTC 2015 armv7l GNU/Linux.
However, flashing did not help.

I also tried on a second board. Same problem.
The BBG Alarm System code posted on the BBG product page also will not run.

Am I doing something wrong?

Thank you,
Ben

Try
i2cdetect -r 2
and see what you get.
— Graham

you ever get this work?