From cf03a3343db19fcce3c73a3a61ab863563950878 Mon Sep 17 00:00:00 2001
From: Clement Remi <remi.clement@irstea.fr>
Date: Sat, 15 Apr 2023 19:03:05 +0200
Subject: [PATCH] update test_mux function and fix some bugs
---
ohmpi.py | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/ohmpi.py b/ohmpi.py
index fbbc5cd9..b151d7cc 100644
--- a/ohmpi.py
+++ b/ohmpi.py
@@ -1582,18 +1582,19 @@ class OhmPi(object):
# find I2C address of the electrode and corresponding relay
# considering that one MCP23017 can cover 16 electrodes
i2c_address = 7 - (electrode_nr - 1) // 16 # quotient without rest of the division
- relay_nr = electrode_nr - (electrode_nr // 16) * 16 + 1
+ relay_nr = (electrode_nr-1) - ((electrode_nr-1) // 16) * 16
+
if i2c_address is not None:
# select the MCP23017 of the selected MUX board
mcp2 = MCP23017(tca[i2c_address])
- mcp2.get_pin(relay_nr - 1).direction = digitalio.Direction.OUTPUT
+ mcp2.get_pin(relay_nr).direction = digitalio.Direction.OUTPUT
# activate relay for given time
- mcp2.get_pin(relay_nr - 1).value = True
+ mcp2.get_pin(relay_nr).value = True
print('electrode:', electrode_nr, ' activated...', end='', flush=True)
time.sleep(activation_time)
- mcp2.get_pin(relay_nr - 1).value = False
+ mcp2.get_pin(relay_nr).value = False
print(' deactivated')
time.sleep(activation_time)
print('Test finished.')
--
GitLab