def just_add_water(queue: Queue, completed: int):
"""
put water sample and reactant onto paper
"""
queue.put(QueueMessage('Starting', task_name='Sampling'))
queue.put(QueueMessage('Adding Water', task_name='Sampling'))
move_water_valve(1)
# push out some water then sucking back in
move_water_linear([2000, 0])
# move valve to inlet so no liquid can go on paper
queue.put(QueueMessage('Adding Reactant', task_name='Sampling'))
move_water_valve(2)
move_reactant_linear(completed)
queue.put(QueueMessage('Finished', task_name='Sampling'))
def pre_test_clean(queue: Queue):
"""
Flush the pipe with air before test begins
Assume water actuator starts in extended position
"""
# suck in air
queue.put(QueueMessage('Starting', task_name='Pre-Test Cleaning'))
queue.put(QueueMessage('Sucking in Air', task_name='Pre-Test Cleaning'))
move_water_valve(1)
move_water_linear([0])
queue.put(QueueMessage('Pushing out air, then pulling in water',
task_name='Pre-Test Cleaning'))
move_water_valve(2)
# push out air, pull in water
move_water_linear([5000, 1000])
queue.put(QueueMessage('Finished', task_name='Pre-Test Cleaning'))
def post_test_clean(queue: Queue):
"""
Empty tubes so that there is only air
"""
# make doubly sure
queue.put(QueueMessage('Starting', task_name='Post-test Clean'))
queue.put(QueueMessage('Push out water', task_name='Post-test Clean'))
move_water_valve(2)
# push water out
move_water_linear([5000])
# take in more air
queue.put(QueueMessage('Pulling in air', task_name='Post-test Clean'))
move_water_valve(1)
move_water_linear(0)
queue.put(QueueMessage('Push out air', task_name='Post-test Clean'))
move_water_valve(2)
move_water_linear([5000])
queue.put(QueueMessage('Finished', task_name='Post-test Clean'))