Communication between ADAU1701 and Python scripts

I have a design to trigger 40 Hz light and sound using Python codes (example attached later)

Each signal generators have its own design:

1. Signal generator

2. light generation

3. sound generation

4. signal generator 2

Audio Visual Stim.dspproj

Currently, a common tool defines different functions to activate stimulation sessions:

import serial

from time import sleep

import sys

sys.path.insert(1, '/home/stim/Linux_Drivers/USB/python')

from usb_1208FS import *

CORRECTION_FACTOR = 1.01725

class ExperimentBoardController():

def __init__(self, com_port_stim):

self.port = serial.Serial(com_port_stim)

self.port_trig = usb_1208FS()

self.port_trig.DConfig(self.port_trig.DIO_PORTA, 0x0)

self.configure_stim('light', mode='active')

self.configure_stim('sound', mode='active')

def play_chime(self, chime_number):

self.port.write(f"play_chime({chime_number})\r".encode('ascii'))

def set_frequency(self, freq_hz):

freq_hz /= CORRECTION_FACTOR

self.port.write(f"set_freq({freq_hz})\r".encode('ascii'))

def configure_stim(self, target, **kwargs):

args = []

for k, v in kwargs.items():

if isinstance(v, str):

v = f"'{v}'"

args.append(f'{k}={v}')

args = ', '.join(args)

command = f"configure_stim('{target}', {args})\r"

self.port.write(command.encode('ascii'))

def trigger(self, trigger_id):

self.port_trig.DOut(self.port_trig.DIO_PORTA, trigger_id)

sleep(0.005)

self.port_trig.DOut(self.port_trig.DIO_PORTA, 0)

def new_phase(self, message, trigger_id, time_s, chime_num=0):

trigger_id = trigger_id + 1

self.trigger(trigger_id)

time_s = time_s

print(f'[{trigger_id}] - {time_s}sec - {message} ')

if chime_num >= 0:

self.play_chime(chime_num)

sleep(time_s)

def end(self):

self.new_phase("End", 254, 1)

This is an example of an active condition:

from time import sleep

from common_tools import ExperimentBoardController

SOUND_INTENSITY = 0.70

LIGHT_INTENSITY = 5/8

board = ExperimentBoardController('COM4', 'COM3')

board.set_frequency(40)

board.configure_stim('light', intensity=0)

board.configure_stim('sound', intensity=0)

#board.new_phase("Eyes open, no stim", 0, 30)

#board.new_phase("Eyes closed, no stim", 1, 60)

board.play_chime(0)

board.configure_stim('light', intensity=LIGHT_INTENSITY, duty_percent=50, phase_deg=0)

board.configure_stim('sound', intensity=0)

board.new_phase("40Hz Light alone", 2, 60, chime_num=-1)

board.configure_stim('light', intensity=0)

board.configure_stim('sound', intensity=0)

board.new_phase("Eyes open, no stim", 0, 30, chime_num=-1)

board.configure_stim('light', intensity=0, duty_percent=50, phase_deg=0)

board.configure_stim('sound', intensity=SOUND_INTENSITY, duty_percent=4, phase_deg=0)

board.new_phase("40Hz sound alone", 3, 60, chime_num=-1)

board.configure_stim('light', intensity=0)

board.configure_stim('sound', intensity=0)

board.new_phase("Eyes open, no stim", 0, 30, chime_num=-1)

board.configure_stim('light', intensity=LIGHT_INTENSITY, duty_percent=50, phase_deg=0)

board.configure_stim('sound', intensity=SOUND_INTENSITY, duty_percent=4, phase_deg=0)

board.new_phase("40Hz light and sound", 4, 120, chime_num=-1)

board.configure_stim('light', intensity=0)

board.configure_stim('sound', intensity=0)

board.new_phase("Eyes open, no stim", 0, 30, chime_num=0)

board.end()

I am going to design a new design paced 40 Hz light and sound with 5 Hz, like this:

My questions are:

How can I integrate the new design with the existing one? Does the chip support both designs simultaneously, or do we need to manually combine them?

If only one design can be stored in RAM at a time, how can I link the two designs and switch between them using Python?

Where can I find the correct address or commands to trigger:

only 40 Hz light or sound, and

40 Hz light/sound synchronized with 5 Hz pacing?

I’d greatly appreciate any insights!

Audio Signal Processors

hardware

SigmaDSP Audio Processors

python

light and sound

adau1701

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