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Activities/Turtle Art/Programmable Brick (view source)
Revision as of 16:21, 21 January 2012
, 16:21, 21 January 2012→Device I/O
# 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/level'
if os.path.exists(device):
if os.path.exists(device):
cmd='sudo chmod 777 {!s}'.format(devicestr)
cmd='sudo chmod 777 {!s}'.format(devicestr)
os.system(cmd) #caution! changing system file permissions
os.system(cmd) #caution! changing system file permissions
fd =open(devicestr, 'rb')
fd = open(devicestr, 'rb')
for x in range(12):
for x in range(12):
fd.read(1) #does not return till the switch state changes
fd.read(1) #does not return till the switch state changes