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I2C differencees between PICO V2 and V1 kits? Between different batches of PICO V2 kits?



Hello,

We have both a Beagle Board (C3) and PICO kit V1 (2) and V2 (2) kits.
We have routinely used I2C to setup PICO V1 and V2.  Now a new batch
of PICO V2 (3) comes in and the I2C commands now do not appear to work, or works occasionally.

I am interested to hear if anyone in the forum has encountered a similar problem.
Is it possible that some command timing/setup parameters have changed and
the BB software needs an update?  Is there any chance this is a hardware problem?

I am talking to the PICO with the BB over I2C with commands like
"bus3-i2c 0x1b wb4 0x05 0x00000007".  The BB has the Angstrom
distribution, purchased on SD from Special Computing. I followed
the recommended connection protocol; connect pico to BB video cable,
connect pico pwr, turn on pico pwr button, then power on and boot BB.

Thanks in advance,
John Spalding