def tweak_mesh_voltage(self, deltaVolt):
"""
Continuously Increase/decrease power supply voltage by
specifed amount using arrow keys
Parameters
----------
deltaVolt: int or float
Amount to change voltage (in Volts) from its current value at
each step. After calling with specified step size, use arrow keys
to keep changing
^C:
exits tweak mode
"""
print('Use arrow keys (left, right) to step voltage (-, +)')
while True:
key = key_press.get_input()
if key in ('q', None):
return
elif key == key_press.arrow_right:
self.set_rel_mesh_voltage(deltaVolt,
wait=False,
do_print=False)
elif key == key_press.arrow_left:
self.set_rel_mesh_voltage(-deltaVolt,
wait=False,
do_print=False)
def test_get_input_shift_arrow(sim_input):
logger.debug('test_get_input_arrow')
input_later(sim_input, util.shift_arrow_up + '\n')
assert util.get_input() == util.shift_arrow_up
def test_cbreak(sim_input):
logger.debug('test_cbreak')
# send the ctrl+c character
input_later(sim_input, '\x03\n')
assert util.get_input() == '\n'
def test_get_input_waits(sim_input):
logger.debug('test_get_input_waits')
input_later(sim_input, 'a\n', delay=2)
assert util.get_input() == 'a'