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"""
Created on Tue Dec 7 06:39:33 2021
Code for testing switch MUX for ohmpi 2
@author: remi.clement
"""
import time , board, busio,adafruit_tca9548a
from adafruit_mcp230xx.mcp23017 import MCP23017
import digitalio
from digitalio import Direction
address=0X70# choose the mux board address
activation_time=1 # choose your activation time in second
i2c = busio.I2C(board.SCL, board.SDA) #activation du protocle I2C
def switch_mux_on(electrode,address):
tca= adafruit_tca9548a.TCA9548A(i2c, address)
if electrode < 17:
nb_i2C=7
a=electrode
elif electrode > 16 and electrode< 33:
nb_i2C=6
a=electrode-16
elif electrode > 32 and electrode < 49:
nb_i2C=5
a=electrode-32
elif electrode > 48 and electrode < 65:
nb_i2C=4
a=electrode-48
mcp2 = MCP23017(tca[nb_i2C])
mcp2.get_pin(a-1).direction=Direction.OUTPUT
mcp2.get_pin(a-1).value=True
def switch_mux_off(electrode,address):
tca= adafruit_tca9548a.TCA9548A(i2c, address)
if electrode < 17:
nb_i2C=7
a=electrode
elif electrode > 16 and electrode < 33:
nb_i2C=6
a=electrode-16
elif electrode > 32 and electrode < 49:
nb_i2C=5
a=electrode-32
elif electrode > 48 and electrode < 65:
nb_i2C=4
a=electrode-48
mcp2 = MCP23017(tca[nb_i2C])
mcp2.get_pin(a-1).direction=digitalio.Direction.OUTPUT
mcp2.get_pin(a-1).value=False
a=input(' if vous want try 1 channel choose 1, if you want try all channel choose 2!')
if a=='1':
b=0
print ("run channel by channel test")
electrode=int(input(' Choose your electrode number (integer):'))
switch_mux_on(electrode,address)
print('electrode:',electrode,' activate' )
time.sleep(activation_time)
switch_mux_off(electrode,address)
print('electrode:',electrode,' deactivate' )
if a== '2':
for electrode in range(1, 65):
switch_mux_on(electrode,address)
print('electrode:',electrode,' activate' )
time.sleep(activation_time)
switch_mux_off(electrode,address)
print('electrode:',electrode,' deactivate' )
time.sleep(activation_time)
if a not in ['1', '2']:
print ("Wrong choice !")