May 16 firmware: AIRPI i2c BMP085 and BMP180 temp and pressure sensors misread

[g7ruh]

May 16th firmware causes temp and pressure sensors to misread

reverting to May 13th firmware fixes the problem. This is on 2 PIs here : https://xively.com/develop/a73wzKTeenrmwkbKnrZq and here https://xively.com/develop/5sS4LOiW-HpUN0kuPKG0 Note that the graphs show average so take time to "change". Viewing raw data shows fix works.

reposted here as requested by popcornmix

[popcornmix]

Looks to be caused by:
#318

@cbeytas can you help with this?

[cinhil]

Hello,
I also have i2c issues since 16 May firmware. Reverting to 13th May fixes the problem.
I have sometimes read and write problem on RTC clock ds1307. It fails in 10% of read/write test.

[cinhil]

Hello,
With a revert of "Perform I2C combined transactions when possible" commit, I do not have any problem with the RTC DS1307 anymore.
Regards,

[Swap-File]

I also have i2c issues with my Minimu9 http://www.pololu.com/product/1268 running Minimu9-ahrs https://github.com/DavidEGrayson/minimu9-ahrs since the May 16th firmware. I reverted to May 13th firmware and it fixed it.

[popcornmix]

The combined I2C transactions commit is now disabled by default.
Please run rpi-update and test.

[g7ruh]

Hi popcornmix,

updated and tested, all back to normal, many thanks for all your hard work making the pi GREAT (and others too)

Roger aka G7RUH

[popcornmix]

Exellent. Okay to close?

[Swap-File]

It's tested and working for me too. Thanks!

[g7ruh]

Thanks Swap-File too.
Popcornmix, fine to close.