progreess on b_field_rotation; TODO: finish the tail end of the func, copy from b_val_sweep
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@ -8,7 +8,7 @@ Lightfield + Positioner
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# Packages from Ryan
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import re
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import math
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from threading import Thread
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import threading
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import pyvisa
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# from pyvisa import ResourceManager, constants
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@ -673,9 +673,6 @@ def b_field_rotation(instr1:pyvisa.resources.Resource, instr2:pyvisa.resources.R
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sweepdown (bool, optional): after finishing the rotation, both B-field components should be set to 0 T. Defaults to False.
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"""
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def wait_for_b_val_helper_func(instr,):
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pass
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if path_save =='':
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path_save = datetime.datetime.now().strftime("%Y_%m_%d_%H%M_hrs_") # TODO: add path_save, base_file_name in the function header
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if base_file_name =='':
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@ -702,7 +699,9 @@ def b_field_rotation(instr1:pyvisa.resources.Resource, instr2:pyvisa.resources.R
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# initialise the sweep angle list as well as the sweep limits and directions for each instrument
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instr1_lim, instr2_lim = 'LLIM', 'ULIM'
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instr1_sweep, instr2_sweep = 'DOWN', 'UP'
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angles, cartesian_coords = polar_to_cartesian(Babs, startangle, endangle, angle_stepsize, clockwise=clockwise) # create lists of angles and discrete Cartesian coordinates
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# create lists of angles and discrete Cartesian coordinates
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angles, cartesian_coords = polar_to_cartesian(Babs, startangle, endangle, angle_stepsize, clockwise=clockwise)
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if clockwise: # NOTE: old conditional was: startangle > endangle see if this works....
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# reverse sweep limits and directions for the clockwise rotation
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@ -733,29 +732,86 @@ def b_field_rotation(instr1:pyvisa.resources.Resource, instr2:pyvisa.resources.R
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# TODO: begin the rotation of the B-field, saving the spectrum for each angle, including the start- and end angles
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# NOTE: implement PID control, possibly best option to manage the b field DO THIS LATER ON, WE DO DISCRETE B VALUES RN
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# bug fix for polar_to_cartesian (27.08.2024, 15:52 hrs)
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# TODO: write the for loop for the rotation here, implement threading => create a helper function to enter into the threads
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for idx, angle in enumerate(angles):
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pass
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# # we acquire with the LF
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# acquire_name_spe = f'{base_file_name}_{bval}T'
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# AcquireAndLock(acquire_name_spe) #this creates a .spe file with the scan name.
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# TODO: define the helper functions for threading here, write the commented code inside this function and call the function below + the other
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# functionalities in b_val_sweep later on....
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# SEE ThreadTest2.py for the helper functions
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# Helper function that listens to a device
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def listen_to_device(device_id, target_value, shared_values, lock, all_targets_met_event):
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while not all_targets_met_event.is_set(): # Loop until the event is set
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# value = 0 # Simulate receiving a float from the device INSERT QUERY NO ECHO HERE TO ASK FOR DEVICE IMAG
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if '2301034' in device_id:
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value = sep_num_from_units(query_no_echo(instr1, 'IMAG?'))[0]*0.1 # convert kG to T
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elif '2101014' in device_id:
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value = sep_num_from_units(query_no_echo(instr2, 'IMAG?'))[0]*0.1 # convert kG to T
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print(f"Device {device_id} reports value: {value} T")
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# # read the .spe file and get the data as loaded_files
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# cwd = os.getcwd() # save original directory
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# os.chdir(path_save) #change directory
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# loaded_files = sl.load_from_files([acquire_name_spe + '.spe']) # get the .spe file as a variable
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# os.chdir(cwd) # go back to original directory
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with lock:
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shared_values[device_id] = value
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# Check if both devices have met their targets
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if all(shared_values.get(device) is not None and abs(shared_values[device] - target_value[device]) <= 0.0001
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for device in shared_values): # TODO: MODIFY THE IF CONDITIONAL HERE TO THAT IN B VAL SWEEP
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print(f"Both devices reached their target values: {shared_values}")
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all_targets_met_event.set() # Signal that both targets are met
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# # Delete the created .spe file from acquiring after getting necessary info
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# spe_file_path = os.path.join(path_save, acquire_name_spe + '.spe')
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# os.remove(spe_file_path)
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# time.sleep(1) # Simulate periodic data checking
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# Main function to manage threads and iterate over target values
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def monitor_devices(device_target_values, angles_lst):
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for iteration, target in enumerate(device_target_values):
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print(f"\nStarting iteration {iteration+1} for target values: {target}")
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# Shared dictionary to store values from devices
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shared_values = {device: None for device in target.keys()}
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# Event to signal when both target values are reached
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all_targets_met_event = threading.Event()
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# Lock to synchronize access to shared_values
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lock = threading.Lock()
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# Create and start threads for each device
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threads = []
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for device_id in target.keys():
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thread = threading.Thread(target=listen_to_device, args=(device_id, target, shared_values, lock, all_targets_met_event))
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threads.append(thread)
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thread.start()
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# Wait until both devices meet their target values
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all_targets_met_event.wait()
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print(f"Both target values for iteration {iteration+1} met. Performing action...")
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# Perform some action after both targets are met
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# we acquire with the LF
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acquire_name_spe = f'{base_file_name}_{angles_lst[iteration]}°' # NOTE: save each intensity file with the given angle
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AcquireAndLock(acquire_name_spe) #this creates a .spe file with the scan name.
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# read the .spe file and get the data as loaded_files
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cwd = os.getcwd() # save original directory
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os.chdir(path_save) #change directory
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loaded_files = sl.load_from_files([acquire_name_spe + '.spe']) # get the .spe file as a variable
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os.chdir(cwd) # go back to original directory
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# Delete the created .spe file from acquiring after getting necessary info
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spe_file_path = os.path.join(path_save, acquire_name_spe + '.spe')
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os.remove(spe_file_path)
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# points_left = total_points - i - 1 # TODO: SEE IF THIS IS CORRECT
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# print('Points left in the scan: ', points_left)
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# #append the intensity data as it is (so after every #of_wl_points, the spectrum of the next point begins)
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# intensity_data.append(loaded_files.data[0][0][0])
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#append the intensity data as it is (so after every #of_wl_points, the spectrum of the next point begins)
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intensity_data.append(loaded_files.data[0][0][0])
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# Clean up threads
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for thread in threads:
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thread.join()
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print(f"Threads for iteration {iteration+1} closed.\n")
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# modify cartesian_coords to suite the required data struct in monitor_devices
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cartesian_coords = [{'2301034': t[0], '2101014': t[1]} for t in cartesian_coords]
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monitor_devices(cartesian_coords, angles)
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# TODO: add the end functionalities for saving the intensity data (see b-val_sweep), modify if necessary
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# SEE LINES 554 TO 577 in code (version on 28.08.2024, 12.49 hrs)
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################################################################# END OF FUNCTION DEFS ###########################################################################################
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