vjclearscreen
622 lines
20 KiB
Arduino
622 lines
20 KiB
Arduino
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/*************************************************************************************
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Kevin Lo, March 2015
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This program will show PH , Room Temperature and Water Temperature on the LCD panel.
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Also support serial communication.
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Connection:
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1) Plug the LCD Keypad to the UNO
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2) Connect Arduino D2 to PH Meter Board T2 (DS18B20)
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3) Connect Arduino A1 to PH Meter Board T1 (LM35)
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4) Connect Arduino A2 to PH Meter Board P0 (PH)
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5) Connect Arduino 5V to PH Meter Board Vcc
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6) Connect Arduino GND to PH Meter Board GND
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Require Library :
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LiquidCrystal : http://arduino.cc/en/Reference/LiquidCrystal
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OneWire : http://www.pjrc.com/teensy/td_libs_OneWire.html
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DallasTemperature : http://milesburton.com/Dallas_Temperature_Control_Library
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Serial Communication :
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Send command in HEX format .
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AA 01 01 BB , Enquiry DS18B20 temperature
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AA 01 02 BB , Enquiry LM35 temperature
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AA 01 03 BB , Enquiry PH reading
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AA 01 04 BB , Enqyiry DS18B20 , LM35 and Ph
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Version :
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v0.1 5/3/2015 First Version by https://github.com/kevinlohk/ArduinoPhMeter
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v0.2 3/9/2015 Vesrion by clemsail@free.fr with calibrating to EEPROM and data send with mySensor
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**************************************************************************************/
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/**************************************************************************************
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modif file : myconfig.h
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/**********************************
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* NRF24L01 Driver Defaults
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***********************************
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#define RF24_CE_PIN 48
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#define RF24_CS_PIN 49
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#define RF24_PA_LEVEL RF24_PA_MAX
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#define RF24_PA_LEVEL_GW RF24_PA_LOW
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**************************************************************************************
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* PIN NRF Mysensor on a arduino Mega : *
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**************************************************************************************
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48 CE orange
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49 CSN/CS jaune
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52 SCK vert
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51 MOSI bleu
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50 MISO violet
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2 IRQ gris
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**************************************************************************************/
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#include <LiquidCrystal.h>
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#include <OneWire.h>
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#include <DallasTemperature.h>
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#include <Wire.h>
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#include <EEPROM.h>
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// My Sensor
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#include <SPI.h>
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#include <MySensor.h>
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// my sensor config
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MySensor gw;
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MyMessage msgPH(0, V_VAR1);
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MyMessage msgTempROOM(1, V_TEMP);
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MyMessage msgTempWATER(2, V_TEMP);
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double lastPhValue = 7;
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// lcd config
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LiquidCrystal lcd(8, 9, 4, 5, 6, 7); // select the pins used on the LCD panel
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#define ONE_WIRE_BUS 3 // DS18B20 connect to Pin 2
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// temp config
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OneWire oneWire(ONE_WIRE_BUS);
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DallasTemperature sensors(&oneWire);
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#define STX 0xAA // define STX for serial communication
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#define ETX 0XBB // define ETX for serial communication
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byte RxCmd [4] = {0, 0, 0, 0};
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// define some values used by the panel and buttons
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int lcd_key = -1;
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int adc_key_in = 0;
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int adc_key_prev = -1;
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int CurrentMode = 0; // 0 = Normal Display , 1 = Debug1 , 2 = Debug2
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int CalSelect = 0; // 0 = PH4 Calibration Select , 1 = PH7 Calibration Select
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// value for temp and Ph
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const int NumReadings = 10; // number of reading for LM35
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int Index = 0; // index
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int TempReadings[NumReadings]; // array for store LM35 readings
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int TempTotal = 0; // LM35 running total
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int TempAverage = 0; // LM35 average reading
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double TempValue = 0; // LM35 Temperature Data in Human Reading Format after calculation
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float lastTempROOM = 0;
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float lastTempWATER = 0;
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int PhReadings[NumReadings]; // array for store PH readings
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int PhTotal = 0; // PH running total
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int PhAverage = 0; // PH average reading
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// the current address to stock calibrating value in the EEPROM
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int addrph4 = 40;
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int addrph7 = 70;
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// value of calibrated Ph
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double Ph7Buffer = 7.00; // For PH7 buffer solution's PH value , 7 or 6.86
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double Ph4Buffer = 4.01; // For PH4 buffer solution's PH value , 4 or 4.01
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double Ph4Reading = EEreadFloat(addrph4);
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double Ph7Reading = EEreadFloat(addrph7);
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int calibrate = 0;
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double PhRatio = 0; // PH Step
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double PhValue = 0; // Ph Value in Human Reading Format after calculation
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// button lcd
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#define btnRIGHT 0
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#define btnUP 1
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#define btnDOWN 2
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#define btnLEFT 3
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#define btnSELECT 4
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#define btnNONE 5
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int read_LCD_buttons() { // read the buttons
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adc_key_in = analogRead(0); // read the value from the sensor
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delay(10); // switch debounce delay. Increase this delay if incorrect switch selections are returned.
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int k = (analogRead(0) - adc_key_in); // gives the button a slight range to allow for a little contact resistance noise
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if (5 < abs(k)) return btnNONE; // double checks the keypress. If the two readings are not equal +/-k value after debounce delay, it tries again.
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//lcd.print(adc_key_in); // read button value and print for calibrate
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if (adc_key_in > 1000) return btnNONE;
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if (adc_key_in < 50) return btnRIGHT;
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if (adc_key_in < 150) return btnUP;
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if (adc_key_in < 350) return btnDOWN;
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if (adc_key_in < 550) return btnLEFT;
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if (adc_key_in < 750) return btnSELECT;
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return btnNONE; // when all others fail, return this.
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}
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// reading routin
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int reading() {
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// read ph calibrated value in EEPROM
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double Ph4Reading = EEreadFloat(addrph4);
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double Ph7Reading = EEreadFloat(addrph7);
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// Reading LM35 and PH Data
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// Samplin LM35 and PH Value
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TempTotal = TempTotal - TempReadings[Index]; // subtract the last reading:
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PhTotal = PhTotal - PhReadings[Index]; // subtract the last reading:
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TempReadings[Index] = analogRead(1); // read from the sensor : LM35
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PhReadings[Index] = analogRead(2); // read from the sensor : PH
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TempTotal = TempTotal + TempReadings[Index]; // add the reading to the temperature total:
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PhTotal = PhTotal + PhReadings[Index]; // add the reading to the ph total:
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Index = Index + 1; // advance to the next position in the array:
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if (Index >= NumReadings) { // if we're at the end of the array...
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Index = 0; // ...wrap around to the beginning:
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TempAverage = TempTotal / NumReadings; // calculate the average:
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PhAverage = PhTotal / NumReadings; // calculate the average:
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}
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TempValue = (double) TempAverage / 3.4 * (5 / 10.24); // LM35 connect to CA3140 for amplify 3 time
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PhValue = (Ph7Reading - PhAverage) / PhRatio + Ph7Buffer; // Calculate PH
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/**************************************************************************************
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to turn on/off a Ph down pump to have a 6.5 Ph
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for the moment
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i've not implemented to have two perstatic pump (Ph down/ Ph Up)
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and can chose a cosigne of Ph value and store it to EEPROM
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use a mosfet (TIP12*) connected with a 1k restistor to control 12V of peristatic pump
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or for better security to arduino use a optocoupler
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**************************************************************************************/
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if (PhValue > 6.5) {
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digitalWrite(53, HIGH); // turn pompe on
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}
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if (PhValue < 6) {
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digitalWrite(53, LOW); // turn pompe off
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}
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/**************************************************************************************/
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if (PhValue > lastPhValue + 0.3) {
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double PHsend = PhValue;
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gw.send(msgPH.set(PHsend, 1)); // Send Ph value to mysensor
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lastPhValue = PhValue;
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}
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if (PhValue < lastPhValue - 0.3) {
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double PHsend = PhValue;
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gw.send(msgPH.set(PHsend, 1)); // Send Ph value
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lastPhValue = PhValue; // Save new ph for next compare
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}
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// Only send data if ROOM Temperature has changed and no error
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if (lastTempROOM < TempValue - 0.5 && TempValue != -127.00 && TempValue != 85.00) {
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if (TempValue != -127.00 && TempValue != 85.00) {
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// Send in the new temperature
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gw.send(msgTempROOM.set(TempValue, 1));
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// Save new temperatures for next compare
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lastTempROOM = TempValue;
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}
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}
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// Only send data if ROOM Temperature has changed and no error
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if (lastTempROOM > TempValue + 0.5 && TempValue != -127.00 && TempValue != 85.00) {
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if (TempValue != -127.00 && TempValue != 85.00) {
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// Send in the new temperature
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gw.send(msgTempROOM.set(TempValue, 1));
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// Save new temperatures for next compare
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lastTempROOM = TempValue;
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}
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}
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}
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void setup() {
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// TIP122 with peristatic pump to PH down
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pinMode(53, OUTPUT);
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// start mysensor
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gw.begin();
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// Send the sketch version information to the gateway and Controller
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gw.sendSketchInfo("PH Temp Sensor", "1.0");
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delay(200);
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// Register all sensors to gw (they will be created as child devices)
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gw.present(0, S_TEMP); // ph
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delay(200);
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gw.present(1, S_TEMP); // room temp
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delay(200);
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gw.present(2, S_TEMP); // water temp
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delay(200);
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lcd.begin(16, 2); // start LCD library
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for (int TempThisReading = 0; TempThisReading < NumReadings; TempThisReading++) // initialize all the LM35 readings to 0:
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TempReadings[TempThisReading] = 0;
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for (int PhThisReading = 0; PhThisReading < NumReadings; PhThisReading++) // initialize all the Ph readings to 0:
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PhReadings[PhThisReading] = 0;
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PhRatio = (Ph4Reading - Ph7Reading) / (Ph7Buffer - Ph4Buffer); // Calculate Ph Ratio
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Serial.begin(115200);
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while (Serial.available()) Serial.read(); // empty RX buffer
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Serial.println("Starting");
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}
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void loop() {
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if (Serial.available()) {
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delay(2);
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RxCmd[0] = Serial.read();
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if (RxCmd[0] == STX) {
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int i = 1;
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while (Serial.available()) {
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delay(1);
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RxCmd[i] = Serial.read();
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//if (RxCmd[i]>127 || i>7) break; //Communication error
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if (RxCmd[i] == ETX) {
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break; //Read all data
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}
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i++;
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}
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}
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}
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if ( RxCmd[1] == 1 ) {
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lcd.setCursor(9, 1);
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switch (RxCmd[2]) {
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case 1: {
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//Serial.print("Command 1 Received "); // Enquiry Water Temperature (DS18B20)
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Serial.println(sensors.getTempCByIndex(0), 2); // Return DS18B20 Data
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break;
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}
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case 2: {
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//Serial.print("Command 2 Received "); // Enquiry Room Temperature (LM35)
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Serial.println(TempValue, 2); // Return LM35 Data
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break;
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}
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case 3: {
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//Serial.print("Command 3 Received "); // Enquiry PH Data
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Serial.println(PhValue, 2); // Return PH Data
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break;
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}
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case 4: {
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//Serial.println("Command 4 Received "); // Enquiry Water Temp. & Room Temp. & PH
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Serial.println(sensors.getTempCByIndex(0), 2); // Return DS18B20 Data
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Serial.println(TempValue, 2); // Return LM35 Data
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Serial.println(PhValue, 2); // Return PH Data
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break;
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}
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}
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}
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for (int i = 0 ; i < 5 ; i++) {
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RxCmd[i] = 0;
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}
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if (CurrentMode == 0) // Nomral Display Mode
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{
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reading(); // Reading LM35 and PH Data for display
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lcd.setCursor(13, 0);
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lcd.print("PH ");
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lcd.setCursor(0, 0); // set the LCD cursor position
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lcd.print("Room");
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lcd.setCursor(0, 1);
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lcd.print("Water");
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lcd.setCursor(6, 0);
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lcd.print(TempValue); // display room temperature value (LM35)
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delay(1); // delay in between reads for stability
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// Display 18B20 Temperature
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lcd.setCursor(6, 1); // move cursor to second line "1" and 6 spaces over
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sensors.requestTemperatures(); // Read DS18B20 data
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lcd.print(sensors.getTempCByIndex(0)); // Display DS18B20 Data
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int TempWATER = sensors.getTempCByIndex(0);
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// Only send data if WATER temperature has changed and no error
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if (lastTempWATER < TempWATER - 0.5 && TempWATER != -127.00 && TempWATER != 85.00) {
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if (TempWATER != -127.00 && TempWATER != 85.00) {
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// Send in the new temperature
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gw.send(msgTempWATER.set(TempWATER, 1));
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// Save new temperatures for next compare
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lastTempWATER = TempWATER;
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}
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}
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// Only send data if WATER temperature has changed and no error
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if (lastTempWATER > TempWATER + 0.5 && TempWATER != -127.00 && TempWATER != 85.00) {
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if (TempWATER != -127.00 && TempWATER != 85.00) {
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// Send in the new temperature
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gw.send(msgTempWATER.set(TempWATER, 1));
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// Save new temperatures for next compare
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lastTempWATER = TempWATER;
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}
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}
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// Display PH Data
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lcd.setCursor(13, 0);
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lcd.print("PH");
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lcd.setCursor(12, 1);
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lcd.print(PhValue); // display PH value
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delay(1); // delay in between reads for stability
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}
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if (CurrentMode == 1) {
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reading();
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lcd.setCursor(0, 0);
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lcd.print("LM35 R");
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lcd.setCursor(10, 0);
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lcd.print("T");
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lcd.setCursor(0, 1);
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lcd.print("PH R");
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lcd.setCursor(10, 1);
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lcd.print("P");
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lcd.setCursor(6, 0);
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lcd.print(TempAverage);
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lcd.setCursor(12, 0);
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lcd.print(TempValue);
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lcd.setCursor(6, 1);
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lcd.print(PhAverage);
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lcd.setCursor(11, 1);
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lcd.print(PhValue);
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}
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if (CurrentMode == 2) {
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reading();
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double PhVoltage;
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PhVoltage = (double)PhAverage * (5 / 10.24);
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lcd.setCursor(0, 0);
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lcd.print("R:");
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lcd.setCursor(3, 0);
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lcd.print(PhAverage);
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lcd.setCursor(7, 0);
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lcd.print("Ratio:");
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lcd.setCursor(13, 0);
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lcd.print(PhRatio);
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lcd.setCursor(0, 1);
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lcd.print("PH:");
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lcd.setCursor(3, 1);
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lcd.print(PhValue);
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}
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if (CurrentMode == 3) { // Calibration Mode Selection Page
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lcd.setCursor(0, 0);
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lcd.print("PH4 Cal ");
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lcd.setCursor(0, 1);
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lcd.print("PH7 Cal ");
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if (CalSelect == 0) {
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lcd.setCursor(8, 0);
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lcd.print(">>");
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}
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if (CalSelect == 1) {
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lcd.setCursor(8, 1);
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lcd.print(">>");
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}
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}
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if (CurrentMode == 4) { // PH4 Calibration Mode
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if (calibrate >= 3) {
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reading();
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lcd.setCursor(0, 0);
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lcd.print("PH4 Calibrate");
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lcd.setCursor(0, 1);
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lcd.print("C:");
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lcd.setCursor(2, 1);
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lcd.print(Ph4Reading);
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lcd.setCursor(9, 1);
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lcd.print("R:");
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lcd.setCursor(11, 1);
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lcd.print(PhAverage);
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delay(2000);
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reading();
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double Ph4Reading = PhAverage;
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lcd.setCursor(0, 0);
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lcd.print("PH4 Saving ");
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lcd.setCursor(0, 1);
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lcd.print("C:");
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lcd.setCursor(2, 1);
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lcd.print(Ph4Reading);
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lcd.setCursor(9, 1);
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lcd.print("R:");
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lcd.setCursor(11, 1);
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lcd.print(PhAverage);
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//EEPROM.write(addrph4, PhAverage);
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EEwriteFloat(addrph4, PhAverage);
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calibrate = 0;
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delay(2000);
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}
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if (calibrate < 3) {
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reading();
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lcd.setCursor(0, 0);
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lcd.print("PH4 loded ");
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lcd.setCursor(0, 1);
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lcd.print("C:");
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lcd.setCursor(2, 1);
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lcd.print(Ph4Reading);
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lcd.setCursor(9, 1);
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lcd.print("R:");
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lcd.setCursor(11, 1);
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lcd.print(PhAverage);
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}
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}
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if (CurrentMode == 5) { // PH7 Calibration Mode
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if (calibrate >= 3) {
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reading();
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lcd.setCursor(0, 0);
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lcd.print("PH7 Calibrate");
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lcd.setCursor(0, 1);
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lcd.print("C:");
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lcd.setCursor(2, 1);
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lcd.print(Ph7Reading);
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lcd.setCursor(9, 1);
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lcd.print("R:");
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lcd.setCursor(11, 1);
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lcd.print(PhAverage);
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delay(2000);
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reading();
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double Ph7Reading = PhAverage;
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lcd.setCursor(0, 0);
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lcd.print("PH7 Saving ");
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lcd.setCursor(0, 1);
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lcd.print("C:");
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lcd.setCursor(2, 1);
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lcd.print(Ph7Reading);
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lcd.setCursor(9, 1);
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lcd.print("R:");
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lcd.setCursor(11, 1);
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lcd.print(PhAverage);
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//EEPROM.write(addrph7, PhAverage);
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EEwriteFloat(addrph7, PhAverage);
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//double Ph7Reading = PhAverage;
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calibrate = 0;
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delay(2000);
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}
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if (calibrate < 3) {
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reading();
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lcd.setCursor(0, 0);
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lcd.print("PH7 loaded ");
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lcd.setCursor(0, 1);
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lcd.print("C:");
|
|
lcd.setCursor(2, 1);
|
|
lcd.print(Ph7Reading);
|
|
lcd.setCursor(9, 1);
|
|
lcd.print("R:");
|
|
lcd.setCursor(11, 1);
|
|
lcd.print(PhAverage);
|
|
}
|
|
}
|
|
|
|
|
|
lcd.setCursor(0, 1); // move to the begining of the second line
|
|
adc_key_prev = lcd_key ; // Looking for changes
|
|
|
|
lcd_key = read_LCD_buttons(); // read the buttons
|
|
|
|
if (adc_key_prev != lcd_key)
|
|
{
|
|
//Serial.println("Key Press Change Detected");
|
|
switch (lcd_key) { // depending on which button was pushed, we perform an action
|
|
case btnRIGHT: { // push button "RIGHT" and show the word on the screen
|
|
//lcd.print("RIGHT");
|
|
|
|
calibrate ++;
|
|
|
|
|
|
if ( CurrentMode == 0 ) {
|
|
lcd.clear();
|
|
CurrentMode = 2;
|
|
}
|
|
if ( CurrentMode == 3) {
|
|
lcd.clear();
|
|
if ( CalSelect == 0 ) {
|
|
CurrentMode = 4;
|
|
}
|
|
if ( CalSelect == 1) {
|
|
CurrentMode = 5;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case btnLEFT: {
|
|
//lcd.print("LEFT "); // push button "LEFT" and show the word on the screen
|
|
if ( CurrentMode == 2 ) {
|
|
lcd.clear();
|
|
CurrentMode = 0;
|
|
}
|
|
if ( CurrentMode == 3 ) {
|
|
lcd.clear();
|
|
CurrentMode = 0;
|
|
}
|
|
if ( CurrentMode == 4 || CurrentMode == 5 ) {
|
|
lcd.clear();
|
|
CurrentMode = 3;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case btnUP: {
|
|
//lcd.print("UP "); // push button "UP" and show the word on the screen
|
|
if ( CurrentMode == 0 ) {
|
|
lcd.clear();
|
|
CurrentMode = 1;
|
|
}
|
|
if ( CurrentMode == 3 ) {
|
|
lcd.clear();
|
|
CalSelect = 0;
|
|
}
|
|
break;
|
|
}
|
|
case btnDOWN: {
|
|
//lcd.print("DOWN "); // push button "DOWN" and show the word on the screen
|
|
if ( CurrentMode == 1) {
|
|
lcd.clear();
|
|
CurrentMode = 0;
|
|
}
|
|
if ( CurrentMode == 3 ) {
|
|
lcd.clear();
|
|
CalSelect = 1;
|
|
}
|
|
break;
|
|
}
|
|
case btnSELECT: {
|
|
|
|
//lcd.print("SEL. "); // push button "SELECT" and show the word on the screen
|
|
if ( CurrentMode == 0 ) {
|
|
lcd.clear();
|
|
CurrentMode = 3;
|
|
break;
|
|
}
|
|
if ( CurrentMode == 3 ) {
|
|
lcd.clear();
|
|
CurrentMode = 0;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
}
|
|
case btnNONE: {
|
|
//lcd.print("NONE "); // No action will show "None" on the screen
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void EEwriteFloat(int addr, float f) {
|
|
unsigned char *buf = (unsigned char*)(&f);
|
|
for ( int i = 0 ; i < sizeof(f) ; i++ ) {
|
|
EEPROM.write(addr + i, buf[i]);
|
|
}
|
|
}
|
|
|
|
float EEreadFloat(int addr) {
|
|
float f;
|
|
unsigned char *buf = (unsigned char*)(&f);
|
|
for ( int i = 0 ; i < sizeof(f) ; i++ ) {
|
|
buf[i] = EEPROM.read(addr + i);
|
|
}
|
|
return f;
|
|
}
|