Development environment setup

Install Arduino IDE (v1.8.12 used for development)
Install required Arduino IDE Lbraries:

-Adafruit MCP23017 Arduino Library (Use Arduino Library Manager)
Install Arduino IDE board support for Teensy 4.1:

-The Teensy Loader Application
Either clone repo with git or download zip
Install Git

-Git installers

-Create a folder in the Arduino Sketch folder labled "DetergentDoser"

-Navigate to the ~/Ardino/DetergentDoser folder in your Command Line Interpreter

-Clone repository with command "git clone https://github.com/ScarceSam/DetergentDoser.git
Download Zip

-DetergentDoser-master.zip

-Unzip file into Arduino Sketch folder

-Remove "-master" from folder name
DetergentDoser.ino can now be opened with Arduino IDE and loaded onto an Artemis ATP

Hardware components

Pin	Use
0	- Display RS
1	- Display E
2	- Display D4
3	- Display D5
4	- Display D6
5	- Display D7
6	- Display R cathode(Not Used)
7	- Display G cathode
8	- Display B cathode
18	- All GPIO Expanders SDA
19	- All GPIO Expanders SLC
20	- MCP23017 GPIO Expanders interrupt
21	- SX1509 GPIO Expander interrupt
26	- Feedline Line-End Drain Valve
27	- Feedline Water Valve
28	- Feedline Manifold Drain Valve
29	- Detergent 1 pump
30	- Detergent 2 pump
31	- Detergent 3 pump
32	- Detergent 4 pump
37	- Feedline Flow sensor
38	- Detergent 1 Level sensor
39	- Detergent 2 Level sensor
40	- Detergent 3 Level sensor
41	- Detergent 4 Level sensor

(W= Washer, R= Relay, VA- Valve)

Pin	Address 0x20	Address 0x21	Address 0x22	Address 0x23	Address 0x24	Address 0x25	Address 0x26	Address 0x27
PA0	W1 R1	W4 R1	W7 R1	W10 R1	W13 R1	W16 R1	W19 R1	W22 R1
PA1	W1 R2	W4 R2	W7 R2	W10 R2	W13 R2	W16 R2	W19 R2	W22 R2
PA2	W1 R3	W4 R3	W7 R3	W10 R3	W13 R3	W16 R3	W19 R3	W22 R3
PA3	W1 R4	W4 R4	W7 R4	W10 R4	W13 R4	W16 R4	W19 R4	W22 R4
PA4	W1 VA	W4 VA	W7 VA	W10 VA	W13 VA	W16 VA	W19 VA	W22 VA
PA5	W2 R1	W5 R1	W8 R1	W11 R1	W14 R1	W17 R1	W20 R1	W23 R1
PA6	W2 R2	W5 R2	W8 R2	W11 R2	W14 R2	W17 R2	W20 R2	W23 R2
PA7	W2 R3	W5 R3	W8 R3	W11 R3	W14 R3	W17 R3	W20 R3	W23 R3
PB0	W2 R4	W5 R4	W8 R4	W11 R4	W14 R4	W17 R4	W20 R4	W23 R4
PB1	W2 VA	W5 VA	W8 VA	W11 VA	W14 VA	W17 VA	W20 VA	W23 VA
PB2	W3 R1	W6 R1	W9 R1	W12 R1	W15 R1	W18 R1	W21 R1	W24 R1
PB3	W3 R2	W6 R2	W9 R2	W12 R2	W15 R2	W18 R2	W21 R2	W24 R2
PB4	W3 R3	W6 R3	W9 R3	W12 R3	W15 R3	W18 R3	W21 R3	W24 R3
PB5	W3 R4	W6 R4	W9 R4	W12 R4	W15 R4	W18 R4	W21 R4	W24 R4
PB6	W3 VA	W6 VA	W9 VA	W12 VA	W15 VA	W18 VA	W21 VA	W24 VA
PB7

Barr Group: Embedded C Coding standard (BARR-C 2018)