title: How to set brightness through ADB on nexus 7
body: <p>I found some info on the web:</p>
  
  <p><code>echo 1 /sys/devices/platform/flashlight.0/leds/flashlight/brightness</code></p>
  
  <p>But on my Nexus 7 (flashed an AOSP), I couldn't find that directory.</p>
  
  <p>Any idea about which file should I write to? Is this doable?</p>
  
  <p>After <code>ls /sys/devices/platform</code>, I got:</p>
  
  <pre><code>LID
  alarm
  arm-pmu.0
  bcm4330_rfkill
  bcmdhd_wlan.1
  bluesleep
  fiq_debugger.0
  fsl-tegra-udc
  gpio-keys.0
  grouper_misc
  leds-gpio
  oprofile-perf.0
  power
  power.0
  pwm-backlight
  ram_console
  reg-dummy
  reg-fixed-voltage.1
  reg-fixed-voltage.10
  reg-fixed-voltage.11
  reg-fixed-voltage.2
  reg-fixed-voltage.3
  reg-fixed-voltage.4
  reg-fixed-voltage.6
  reg-fixed-voltage.8
  regulatory.0
  sdhci-tegra.2
  sdhci-tegra.3
  serial8250
  snd-soc-dummy
  spdif-dit.0
  spdif-dit.1
  spi_tegra.0
  spi_tegra.3
  tegra-ehci.1
  tegra-i2c.0
  tegra-i2c.1
  tegra-i2c.2
  tegra-i2c.3
  tegra-i2c.4
  tegra-nvmap
  tegra-otg
  tegra-pcm-audio
  tegra-se
  tegra-snd-rt5640.0
  tegra30-ahub
  tegra30-dam.0
  tegra30-dam.1
  tegra30-dam.2
  tegra30-hda
  tegra30-i2s.1
  tegra30-i2s.3
  tegra30-i2s.4
  tegra30-spdif
  tegra_camera
  tegra_pwm.0
  tegra_rtc
  tegra_smmu
  tegra_uart.1
  tegra_uart.2
  tegra_uart.3
  tegra_uart.4
  tegra_wdt
  uevent
  </code></pre>