def test_pwm_duty_modified(self):
PWM.start("P9_14", 0)
files = os.listdir('/sys/devices')
ocp = '/sys/devices/'+[s for s in files if s.startswith('ocp')][0]
files = os.listdir(ocp)
pwm_test = ocp+'/'+[s for s in files if s.startswith('pwm_test_P9_14')][0]
assert os.path.exists(pwm_test)
duty = open(pwm_test + '/duty').read()
period = open(pwm_test + '/period').read()
assert int(duty) == 0
assert int(period) == 500000
PWM.set_duty_cycle("P9_14", 100)
duty = open(pwm_test + '/duty').read()
period = open(pwm_test + '/period').read()
assert int(duty) == 500000
assert int(period) == 500000
PWM.cleanup()
def convert(s):
global last
values = map(ord, s)
output = ''
#send servo commands to Arduino based on command string
for x in range(1, 6):
if values[8] == 250:
output = 'FAILSAFE MODE!!!!!!!!!!!!!!!!!!!!!!!'
elif values[8] == 125:
arm_motors()
else:
if values[x] != last[x]:
mapped = map_val(values[x], 0, 250, 5.0, 10.0)
PWM.set_duty_cycle(pins[x], float(mapped))
if x < 4:
output += ' | ' + str(mapped) + ','
else:
output += ' | ' + str(mapped)
output += str(values[x]) + ' | '
print output
last = s
def test_pwm_duty_cycle_invalid_value_negative(self):
PWM.start("P9_14", 0)
with pytest.raises(ValueError):
PWM.set_duty_cycle("P9_14", -1)
PWM.cleanup()
def test_pwm_duty_cycle_invalid_key(self):
with pytest.raises(ValueError):
PWM.set_duty_cycle("P9_15", 100)
PWM.cleanup()
def test_pwm_duty_cycle_non_setup_key(self):
with pytest.raises(RuntimeError):
PWM.set_duty_cycle("P9_14", 100)
PWM.cleanup()
def test_pwm_duty_cycle_invalid_value_string(self):
PWM.start("P9_14", 0)
with pytest.raises(TypeError):
PWM.set_duty_cycle("P9_14", "a")
PWM.cleanup()
def arm_motors():
PWM.set_duty_cycle(pins[1], 5)
PWM.set_duty_cycle(pins[2], 10)
PWM.set_duty_cycle(pins[3], 5)
PWM.set_duty_cycle(pins[4], 10)
