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Line 163:
Line 163: − # This Python block returns with the brightness sensor value in the heap+ − # a range of parameters can be measured, for example, substitute any of+ − # these strings for the string in the program below.+ − #+ − # /sys/devices/platform/olpc-battery.0/power_supply/olpc-battery/current_now+ − # /sys/devices/platform/olpc-battery.0/power_supply/olpc-battery/voltage_now+ − # /sys/devices/platform/dcon/backlight/dcon-bl/actual_brightness+ − + Line 185:
Line 185: − + − # If you can work out how to use them...+ − # accelerometer: /dev/input/event0 ???+ − # power button: /dev/input/event1+ − # lid switch: /dev/input/event2+ − # ebook: /dev/input/event3+ − # headphone jack: /dev/input/event7+ − # microphone jack: /dev/input/event8+ − # rotate, cursor, and game pad keys: /dev/input/event10+
Activities/Turtle Art/Programmable Brick (view source)
Revision as of 21:15, 26 August 2011
, 21:15, 26 August 2011→Device I/O
====Device I/O====
====Device I/O====
This Python block returns with the brightness sensor value in the heap
a range of parameters can be measured, for example, substitute any of
these strings for the string in the program below.
* /sys/devices/platform/olpc-battery.0/power_supply/olpc-battery/current_now
* /sys/devices/platform/olpc-battery.0/power_supply/olpc-battery/voltage_now
* /sys/devices/platform/dcon/backlight/dcon-bl/actual_brightness
def myblock(tw, x): # ignores second argument
def myblock(tw, x): # ignores second argument
import os
import os
# The light sensor is only available on the XO 1.75
# The light sensor is only available on the XO 1.75
device = '/sys/devices/platform/olpc-ols.0/power_state'
device = '/sys/devices/platform/olpc-ols.0/power_state'
else:
else:
tw.lc.heap.append(-1)
tw.lc.heap.append(-1)
If you can work out how to use them...
* accelerometer: /dev/input/event0 ???
* power button: /dev/input/event1
* lid switch: /dev/input/event2
* ebook: /dev/input/event3
* headphone jack: /dev/input/event7
* microphone jack: /dev/input/event8
* rotate, cursor, and game pad keys: /dev/input/event10
===Understanding the structure of the Turtle Art program===
===Understanding the structure of the Turtle Art program===