# ok now set up gpioa0, set it to the opposite of twi_sda (0) i.e. gpioa0=1
# and test that... then switch over pin0/mux=3
# ok now set up gpioa0, set it to the opposite of twi_sda (0) i.e. gpioa0=1
# and test that... then switch over pin0/mux=3
dut.mux_lines_cell0_mux_in = 0
dut.EN_mux_lines_cell0_mux = 1
dut.iocell_side_io0_cell_in_in = 1 # twi_sda=0, so gpioa0 should be 1
dut.mux_lines_cell0_mux_in = 0
dut.EN_mux_lines_cell0_mux = 1
dut.iocell_side_io0_cell_in_in = 1 # twi_sda=0, so gpioa0 should be 1