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Activities/Turtle Art/Programmable Brick (view source)
Revision as of 09:05, 27 August 2011
, 09:05, 27 August 2011→Device I/O
This Python block returns with the brightness sensor value in the heap.
This Python block returns with the brightness sensor value in the heap.
A range of parameters can be measured, for example, substitute any of
A range of parameters can be measured, for example, substitute any of
the path strings in the table for the 'device' in the program below.
{| border=1 cellpadding=3 style="border: 1px solid white; border-collapse: collapse; background: #e3e4e5;"
|-style="background:#787878; color: white;"
! device !! path !! notes
|-
| battery current || /sys/devices/platform/olpc-battery.0/power_supply/olpc-battery/current_now || OLPC XO
|-
| battery voltage || /sys/devices/platform/olpc-battery.0/power_supply/olpc-battery/voltage_now || OLPC XO
|-
| screen brightness || /sys/devices/platform/dcon/backlight/dcon-bl/actual_brightness || OLPC XO
|-
| light sensor || /sys/devices/platform/olpc-ols.0/power_state || OLPC XO 1.75
|}
string = fh.read()
string = fh.read()
fh.close()
fh.close()
tw.lc.heap.append(int(string)) # append as integer value to heap
tw.lc.heap.append(float(string)) # append as float value to heap
else:
else:
tw.lc.heap.append(-1)
tw.lc.heap.append(-1)