Common Device Tree (Jessie) settings

Note. Whilst you can set multiple configurations, some options use the same GPIO pins. All "dtparam=" configs go into your config.txt (and you must reboot before they will take effect). I2C - "dtparam=i2c_arm=on" SPI - "dtparam=spi=on" I2S - "dtparam=i2s=on" lirc-rpi - "dtoverlay=lirc-rpi" The lirc-rpi module parameters are added to the end of the dtoverlay line, like this: "dtoverlay=lirc-rpi,gpio_in_pin=16,gpio_in_pull=high". w1-gpio - If you require the external pullup enable pin - "dtoverlay=w1-gpio-pullup,gpiopin=,extpullup=" otherwise - "dtoverlay=w1-gpio,gpiopin=" (where and are GPIO pins, obviously). If you are using the parasitic power (power over data, 2-wire) mode, add ",pullup=1" (or ",pullup=on") pps-gpio - "dtoverlay=pps-gpio,gpiopin=" Audio modules - add one of the following:- dtoverlay=hifiberry-dac dtoverlay=hifiberry-dacplus dtoverlay=hifiberry-digi dtoverlay=hifiberry-amp dtoverlay=iqaudio-dac dtoverlay=iqaudio-dacplus If your card doesn't appear here, you'll need to turn off device tree for now ("device_tree=") and contact the manufacturer for a rebuilt kernal I2C Real Time Clock - dtoverlay=i2c-rtc, where is one of: ds1307, ds3231, pcf2127, pcf8523, pcf8563 Use the LED as a 'heartbeat' -