First commit

switchboard.py

+import serial
+
+class Switchboard:
+    def __init__(self, port, debug=False):
+        """
+        Constructor
+
+        port is a serial port connected to the switchboard
+
+        the serial port will be opened
+        """
+        self.ser = serial.Serial(port, 9600, timeout=5, bytesize=8, parity='N', stopbits=1)
+        self.port = port
+        self.allowed_channels = [2,3,4,5,6,7,8,9,10,11,12,13,14,15,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53]
+        self.debug = debug
+        self.current_channel = -1
+
+    def select_channel(self,channel):
+        """
+        Switch to specific channel; all other channels will be turned off
+
+        channel is an integer
+
+        returns True if switch was completed successfully
+        returns False if the channel is invalid
+        No side effects if channel is invalid
+        """
+        channel_int = int(channel)
+        #weed out channels that will always be illegal
+        if(not channel_int in self.allowed_channels):
+            return False
+        else:
+            d1 = chr(int(channel_int/10.) + ord('0'))#extract 10-digit
+            d0 = chr((channel_int % 10) + ord('0'))#extract 1-digit
+            self.ser.write(b'c')
+            self.ser.write(bytes(d1, encoding='utf8'))
+            self.ser.write(bytes(d0, encoding='utf8'))
+            response = self.ser.read(1)
+            if response == b'A':
+                if self.debug == True:
+                    print(f"Sent: {c} {d1} {d0}")
+                    print(f"Response: {response}")
+                self.current_channel = channel
+                return True
+            else:
+                if self.debug == True:
+                    print(f"Sent: {c} {d1} {d0}")
+                    print(f"Response: {response}")
+                return False
+
+    def turn_off(self):
+        """
+        Turn off all channels
+
+        returns True if operation was completed successfully
+        returns False else
+        No side effects if operation fails
+        """
+        self.ser.write(b'o')
+        self.ser.write(b'f')
+        self.ser.write(b'f')
+        response = self.ser.read(1)
+        if response == b'A':
+            if self.debug == True:
+                print(f"Sent: {o} {f} {f}")
+                print(f"Response: {response}")
+            self.current_channel = -1
+            return True
+        else:
+            if self.debug == True:
+                print(f"Sent: {o} {f} {f}")
+                print(f"Response: {response}")
+            return False
+
+    def close(self):
+        """
+        Close the serial port
+        """
+        self.ser.close()

switchboard_sandbox.ipynb

+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#currently enabled channels: 4, 9, 10, 12, 13, 14, 15, 20, 23, 46\n",
+    "enabled_channels = [4, 9, 10, 12, 13, 14, 15, 20, 23, 46]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from switchboard import *\n",
+    "import time"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "mySwitches = Switchboard('/dev/tty.usbmodem143101')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "for j in range(10):\n",
+    "    for i in enabled_channels:\n",
+    "        mySwitches.select_channel(i)\n",
+    "        time.sleep(1)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "True"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "mySwitches.turn_off()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "mySwitches.close()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.0"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}