252 lines
7.8 KiB
C++
252 lines
7.8 KiB
C++
/*
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* CanGrow - simply DIY automatic plant grow system (for cannabis).
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*
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* Pin assignment
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* ==============
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*
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* D0 - MOSFET Fan
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* D1, D2 - I2C
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* D3 - DHT11
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* D5 - MOSFET Grow LED, PWM
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* D6 - MOSFET Pump
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* D7 - waterlevel (set HIGH to read value)
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* D8 - analog soil moisture (set HIGH to read value)
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* A0 - analog input for soil moisture and waterlevel readings
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*
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* D4 and D7 cannot be HIGH at the same time!
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*/
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#include <SPI.h>
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#include <Wire.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_SSD1306.h>
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#include "DHT.h"
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// D0 is HIGH at boot, no PWM
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uint8_t PINfan = D0;
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// If D3 is pulled to LOW, boot fails
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uint8_t PINdht = D3;
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// D4 is HIGH at boot, boot fail if pulled to LOW
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uint8_t PINled = D5; //
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uint8_t PINpump = D6;
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uint8_t PINwaterlevel = D7;
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uint8_t PINsoilmoisture = D8;
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uint8_t PINanalog = A0;
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#define WIRE Wire
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#define DHTTYPE DHT11
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Adafruit_SSD1306 display = Adafruit_SSD1306(128, 32, &WIRE);
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// 'CanGrow_Logo', 128x32px
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const unsigned char bmpCanGrow_Logo [] PROGMEM = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x03, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x0f, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x07, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x03, 0xe0, 0x00, 0x1f, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x0e, 0x03, 0x00, 0x00, 0x00, 0x00, 0x03, 0xe0, 0x00, 0x38, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x1c, 0x03, 0x00, 0x00, 0x00, 0x00, 0x07, 0xe0, 0x00, 0x70, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x18, 0x03, 0x00, 0x00, 0x00, 0x04, 0x07, 0xe0, 0x20, 0x60, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x18, 0x03, 0x00, 0x00, 0x00, 0x06, 0x07, 0xe0, 0xe0, 0x60, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x18, 0x00, 0x00, 0x00, 0x00, 0x03, 0x87, 0xe1, 0xc0, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x30, 0x00, 0x3f, 0xc3, 0xff, 0x03, 0xc7, 0xe3, 0xc0, 0xcf, 0xf9, 0xff, 0xe3, 0xfc, 0xc1, 0x83,
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0x30, 0x00, 0x7f, 0xe3, 0xff, 0x83, 0xe7, 0xe7, 0xc0, 0xcf, 0xfb, 0xff, 0xe7, 0xfe, 0xc3, 0x87,
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0x30, 0x00, 0xe0, 0x73, 0x80, 0xc1, 0xf7, 0xef, 0xc0, 0xc0, 0x1b, 0x80, 0x0e, 0x03, 0xc3, 0x86,
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0x30, 0x00, 0xc0, 0x33, 0x00, 0xc1, 0xff, 0xff, 0x80, 0xc0, 0x1b, 0x00, 0x0c, 0x03, 0xc7, 0x8e,
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0x30, 0x01, 0xc0, 0x37, 0x00, 0xc0, 0xff, 0xff, 0x80, 0xc0, 0x3b, 0x00, 0x1c, 0x03, 0xc7, 0x8c,
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0x60, 0x01, 0xc0, 0x37, 0x00, 0xc0, 0xff, 0xff, 0x01, 0x80, 0x3f, 0x00, 0x18, 0x03, 0xcf, 0x9c,
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0x60, 0x00, 0x00, 0x37, 0x00, 0xc0, 0x7f, 0xfe, 0x01, 0x80, 0x37, 0x00, 0x18, 0x03, 0xcf, 0x9c,
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0x60, 0x00, 0x00, 0x76, 0x01, 0xc0, 0x1f, 0xfc, 0x01, 0x80, 0x36, 0x00, 0x18, 0x06, 0xdf, 0xb8,
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0x60, 0x00, 0x7f, 0xe6, 0x01, 0x9f, 0x9f, 0xfc, 0xf9, 0x80, 0x36, 0x00, 0x18, 0x06, 0xdd, 0xb8,
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0x60, 0x00, 0xff, 0xe6, 0x01, 0x87, 0xff, 0xff, 0xf1, 0x80, 0x76, 0x00, 0x18, 0x06, 0xdd, 0xb0,
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0xc0, 0x01, 0xc0, 0xee, 0x01, 0x83, 0xff, 0xff, 0xc3, 0x00, 0x7e, 0x00, 0x30, 0x06, 0xf9, 0xf0,
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0xc0, 0x0b, 0x80, 0x6e, 0x01, 0x81, 0xff, 0xff, 0x83, 0x00, 0x6e, 0x00, 0x30, 0x06, 0xf9, 0xe0,
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0xc0, 0x1b, 0x00, 0xec, 0x01, 0x80, 0x1f, 0xf8, 0x03, 0x00, 0x6c, 0x00, 0x30, 0x0e, 0xf1, 0xe0,
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0xc0, 0x3b, 0x00, 0xcc, 0x03, 0x80, 0x3f, 0xfc, 0x03, 0x00, 0xec, 0x00, 0x30, 0x0c, 0xf1, 0xc0,
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0xc0, 0x7b, 0x01, 0xcc, 0x03, 0x00, 0x7f, 0xfe, 0x03, 0x01, 0xec, 0x00, 0x30, 0x1c, 0xe1, 0xc0,
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0x7f, 0xf1, 0xff, 0xdc, 0x03, 0x00, 0xf0, 0x8f, 0x01, 0xff, 0xfc, 0x00, 0x1f, 0xf8, 0xe1, 0xc0,
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0x3f, 0xe0, 0xff, 0xcc, 0x03, 0x00, 0x00, 0x80, 0x00, 0xff, 0xcc, 0x00, 0x0f, 0xf0, 0xc1, 0x80,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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// Array of all bitmaps for convenience. (Total bytes used to store images in PROGMEM = 528)
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const int bmpallArray_LEN = 1;
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const unsigned char* bmpallArray[1] = {
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bmpCanGrow_Logo
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};
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DHT dht(PINdht, DHTTYPE);
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void writeI2CRegister8bit(int addr, int value) {
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Wire.beginTransmission(addr);
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Wire.write(value);
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Wire.endTransmission();
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}
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unsigned int readI2CRegister16bit(int addr, int reg) {
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Wire.beginTransmission(addr);
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Wire.write(reg);
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Wire.endTransmission();
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delay(20);
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Wire.requestFrom(addr, 2);
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unsigned int t = Wire.read() << 8;
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t = t | Wire.read();
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return t;
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}
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int getWaterlevel() {
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/*
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* waterlevelRAW
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* ===========
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* 0 - 199 : CRITICAL
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* 200 - 399 : WARNING
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* >400 : OK
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*
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* waterlevel
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* ==========
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* 2 : CRITICAL
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* 1 : WARNING
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* 0 : OK
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*/
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int waterlevelWARN = 200;
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int waterlevelOK = 400;
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int waterlevelRAW = 0;
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int waterlevel = 0;
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// enable Vcc for water level sensor
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digitalWrite(PINwaterlevel, HIGH);
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// wait a bit to let the circuit stabilize
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delay(200);
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// get the value
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waterlevelRAW = analogRead(PINanalog);
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// disable Vcc for the sensor to prevent electrolysis effect
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digitalWrite(PINwaterlevel, LOW);
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if( waterlevelRAW >= waterlevelOK) {
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waterlevel = 0;
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} else if( waterlevelRAW >= waterlevelWARN) {
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waterlevel = 1;
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} else {
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waterlevel = 2;
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}
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return waterlevel;
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}
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float getTemperature(bool tempSensor) {
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/*
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* tempSensor
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* ==========
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* 0/false : DHT11 temp sensor
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* 1/true : chirp I2C temp sensor
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*/
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float temperature = 0;
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if(tempSensor == false ) {
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// read temperature from DHT11
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temperature = dht.readTemperature();
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} else {
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// read temperature from chrip I2C
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temperature = readI2CRegister16bit(0x20, 5) * 0.10 ;
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}
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return temperature;
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}
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float getHumidity() {
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float humidity = dht.readHumidity();
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return humidity;
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}
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int getSoilmoisture() {
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int soilmoisture = readI2CRegister16bit(0x20, 0);
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return soilmoisture;
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}
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int getLightchirp() {
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// get the "light value" from I2C chirp module
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writeI2CRegister8bit(0x20, 3); //request light measurement
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int lightchirp = readI2CRegister16bit(0x20, 4);
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return lightchirp;
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}
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void setup() {
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// setup pins
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pinMode(PINfan, OUTPUT);
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pinMode(PINdht, INPUT);
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pinMode(PINwaterlevel, OUTPUT);
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pinMode(PINled, OUTPUT);
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pinMode(PINpump, OUTPUT);
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// set all OUTPUT to low
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digitalWrite(PINfan, LOW);
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digitalWrite(PINwaterlevel, LOW);
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digitalWrite(PINled, LOW);
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digitalWrite(PINpump, LOW);
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// initialise Wire for I2C
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Wire.begin();
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// initialise Serial output
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Serial.begin(115200);
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// reset chirp
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writeI2CRegister8bit(0x20, 6); //reset
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// initialise I2C display
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display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // Address 0x3C for 128x32
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// initialise DHT11
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dht.begin();
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display.clearDisplay();
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display.display();
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// set display settings
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display.setTextSize(1);
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display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
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// display Logo
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display.drawBitmap(0, 0, bmpCanGrow_Logo, 128, 32, WHITE);
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display.display();
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delay(2500);
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// clear display
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display.clearDisplay();
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display.display();
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}
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void loop() {
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// set display cursor to top left
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display.setCursor(0,0);
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// display text
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display.print("I2C: ");
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display.print(getSoilmoisture());
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display.print(", ");
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display.println(getTemperature(1));
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display.print("DHT11: ");
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display.print(getTemperature(0));
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display.print(", ");
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display.println(getHumidity());
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display.display();
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display.print("Water Status: ");
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display.println(getWaterlevel());
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display.print("light: ");
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display.println(getLightchirp());
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// print everything on the display
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display.display();
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delay(800);
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}
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