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by oweno
Fri Sep 14, 2018 3:37 pm
Forum: Compute Module
Topic: WM8731 Audio Codec, I2C weirdness
Replies: 6
Views: 1968

Re: WM8731 Audio Codec, I2C weirdness

Thanks. I was hoping it was something config related, but I've been over the GPIO setup many times, unless there is something I am missing. Using i2c1 on pins 2,3 Here is "raspi-giop get": BANK0 (GPIO 0 to 27): GPIO 0: level=1 fsel=0 func=INPUT GPIO 1: level=1 fsel=0 func=INPUT GPIO 2: level=1 fsel=...
by oweno
Thu Sep 13, 2018 9:30 pm
Forum: Compute Module
Topic: WM8731 Audio Codec, I2C weirdness
Replies: 6
Views: 1968

WM8731 Audio Codec, I2C weirdness

I've been trying to get the WM8731 audio code working with the Compute Module 3. This part works fine with the Pi 3B, but is unreliable with the CM3. Using the CMIO board or our custom board, the problems seem to be I2C related. The WM8731 is configured over I2C, and on the CM3 setup many of the tra...
by oweno
Sun Feb 17, 2013 2:12 pm
Forum: Advanced users
Topic: Boot with SD readonly?
Replies: 36
Views: 24168

Re: Boot with SD readonly?

I have been mounting root read only (using the fstab posted here): proc /proc proc defaults 0 0 /dev/mmcblk0p1 /boot vfat ro 0 0 /dev/mmcblk0p2 / ext4 ro 0 0 none /var/run ramfs size=1M 0 0 none /var/log ramfs size=1M 0 0 power cycling many times so far, I have not had any problems! But does this re...

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