Saving synchronised 7T fMRI Triggers received via USB connected NNL SyncBox, on every TR and Task Response Keypress (PsychoPy) - triggers

Question

I would like to get synchronised timings and number of triggers for each single pulse sent by the 7T MRI scanner together with each single SPACEBAR keypress as a participant’s response when particular letters (A, B, C, X, Y) are presented on the screen, also the stimulus start time with each corresponding trigger.
So far I have added a “Waiting for scanner” routine where I get the first pulse via USB connected NNL Synbox saved in the .csv data file but I want to save each single pulse (TR) and timings. Triggers are automatically emulated as letter ‘s’ sent by the NNL Synbox.
# Code component: Creat routine "Wait for Scanner"
text_wait = visual.TextStim(win=win, name='text_wait',
text='Waiting for scanner...',
font='Arial',
pos=(0, 0), height=0.8, wrapWidth=None, ori=0,
color='white', colorSpace='rgb', opacity=1,
languageStyle='LTR',
depth=0.0);
#Set first MR Trigger
mr_trigger_number = [] # list for triggers
mr_trigger_time = [] # list for time of each trigger
ScannerKeyboard = keyboard.Keyboard() # set keyboard
count_mr_trigger = 0 # counts amount of MR scanner trigger, starts with zero
start_trigger = ScannerKeyboard.getKeys(keyList=['s'], waitRelease = False) # experiment starts with MR Scanner "s"
# Draw waiting Screen until "s" is sent from NNL Syncbox
while len(start_trigger) == 0: # if no trigger was sent show:
text_wait.draw() # Text "Waiting for scanner"
win.flip()
start_trigger = ScannerKeyboard.getKeys(keyList=['s'], waitRelease = False) # show text_wait until one "s" was received
# Get timing information and store trigger number
onset = core.getTime() # get Onset time of trigger
count_mr_trigger = count_mr_trigger + 1 # count MR Scanner trigger, add "1!
# Save time and number of MR Trigger
thisExp.addData('MR_trigger_time',onset) # save trigger time of onset
thisExp.addData('MR_trigger_number',count_mr_trigger)
And also I used the following code component in > Each Frame tab of 2 trials conditions to save the stimuli onset timings when a pulse 's' is received. This works fine but stimulus start time > stimulus_start_time = globalClock.getTime() - mr_trigger_time is saved based on first pulse only as I am unable to save each pulse timings.
#save stimulus onset time for two types of trial conditions
if trials.thisN == 0 and frameN == 0:
loop_start_time = globalClock.getTime() - mr_trigger_time
elif frameN == 1:
stimulus_start_time = globalClock.getTime() - mr_trigger_time
# store the data:
thisExp.addData('stimulus_start_time', stimulus_start_time)
if trials_2.thisN == 0 and frameN == 0:
loop_start_time = globalClock.getTime() - mr_trigger_time
elif frameN == 1:
stimulus_start_time = globalClock.getTime() - mr_trigger_time
# store the data:
thisExp.addData('stimulus_start_time', stimulus_start_time)
However, I want to record and save timings of each trigger pulse when a SPACEBAR response is pressed on a target letter (stimulus) by a participant, to compare the timings with accuracy and reaction times of the task with each corresponding trigger timings.
I would really appreciate your valuable suggestions on how to work around this, as I am quite new to the PsychoPy. I also posted to the PsychoPy forum but haven't got any update so far.
Thanks in advance!