Updates test_3_mux_2024.py

dev/test_3_mux_2024.py

@@ -55,7 +55,13 @@ if within_ohmpi:
     k._hw.calibrate_rx_bias()  # electrodes 1 4 2 3 should be connected to a reference circuit
     # print(f'Resistance: {k._hw.last_rho :.2f} ohm, dev. {k._hw.last_dev:.2f} %, rx bias: {k._hw.rx._bias:.2f} mV')
     # k._hw._plot_readings()
-    d= k.run_measurement([A, B, M, N], injection_duration=6.)
+    k._hw.switch_mux([A, B, M, N], state='on')
+    k._hw.vab_square_wave(3., 1)
+    k._hw.switch_mux([A, B, M, N], state='off')
+    print(f'Resistance: {k._hw.last_rho :.2f} ohm, dev. {k._hw.last_dev:.2f} %, rx bias: {k._hw.rx._bias:.2f} mV')
+    k._hw._plot_readings()
+    print('using OhmPi')
+    d = k.run_measurement([A, B, M, N], injection_duration=6.)
     print(d)
     # k._hw._plot_readings()
     print(f'Resistance: {k._hw.last_rho :.2f} ohm, dev. {k._hw.last_dev:.2f} %, rx bias: {k._hw.rx._bias:.2f} mV')