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Add info about i2c breakage on newer firmware

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Donald Burr 2015-02-17 20:55:56 -08:00
parent 3170955894
commit 737ef135f9
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NOTES/LCD.HOWTO
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From: https://learn.adafruit.com/adafruit-16x2-character-lcd-plus-keypad-for-raspberry-pi/usage
NOTE: if i2c does not appear to work,
edit /boot/config.txt and add: dtparam=i2c1=on
(cf. http://raspberrypi.stackexchange.com/questions/27073/firmware-3-18-x-breaks-i2c-spi-audio-lirc-1-wire-e-g-dev-i2c-1-no-such-f)
* edit /etc/modules, add i2c-bcm2708 and i2c-dev
* sudo apt-get install i2c-tools python-smbus
* confirm that the lcd was detected by running: