Added DHT22 sensor
This commit is contained in:
Eric Teunis de Boone
parent
ec91729896
commit
b231ada9dc
12 changed files with 482 additions and 170 deletions
95
mpduino/layout.ino
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95
mpduino/layout.ino
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/*
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Define one function to control all of the layout.
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It works per line with only one variable (tick).
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This one gives a way of scrolling through text.
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*/
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#define FLASH_LINE_TICKS 3
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void initial_layout() {
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display.clearDisplay();
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display.setTextSize(2);
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display.setTextColor(WHITE);
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display.setCursor(0, 8);
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display.println("Waiting..");
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display.display();
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}
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void layout( unsigned int tick ) {
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display.clearDisplay();
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display.setTextSize(1);
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display.setTextColor(WHITE);
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display.setTextWrap(false);
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if ( playing || tick % FLASH_LINE_TICKS ) {
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display.setCursor(0, 0);
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// First line (20)
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if (volume == 100 || volume == 0){
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if (volume == 100) display.print('00');
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else display.print('--');
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}
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else display.print(volume);
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display.print(F("% "));
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display.print(round(temperature));
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display.print(F("C "));
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display.print(round(humidity));
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display.print(F("% |"));
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if (repeat_bool) display.print('r');
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else display.print(' ');
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if (random_bool) display.print('x');
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else display.print(' ');
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if (single_bool) display.print('s');
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else display.print(' ');
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if (consume_bool) display.print('c');
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else display.print(' ');
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if (shuffle_bool) display.print('z');
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else display.print(' ');
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if (updating_bool) display.print('u');
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else display.print(' ');
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}
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//line 2
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display.setCursor(0, 8);
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display.print(textscroll(title,tick));
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display.startscrollleft(0x06, 0x0F);
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//line 3
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display.setCursor(0, 16);
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display.print(textscroll(artist, tick));
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//line 4
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display.setCursor(0, 24);
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display.print(textscroll(album, tick));
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display.display();
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}
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String textscroll(String text, unsigned int tick) {
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int chars = 21;
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int len = text.length();
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String newstring = "";
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if ( len < chars) {
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for ( int i = len; i < chars -1; i+=2){
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text = " "+text+" ";
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}
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if ( text.length() == chars - 1) text = text+" ";
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return text;
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}
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text = text + " - ";
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for ( int i = 0; i < chars; i++ )
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newstring += text.charAt((2*tick + i) % (len+3));
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return newstring;
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}
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int calcMaxTicks() {
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maxticks = title.length() * artist.length() * album.length();
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Serial.print("MT:");
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Serial.println(maxticks);
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return maxticks;
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}
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134
mpduino/mpduino.ino
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134
mpduino/mpduino.ino
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/*
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Project to interface a screen connected to an arduino with data from a vash script.
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Used as start up for a HTPC.
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*/
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#define BAUD 9600
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#define MAIN_DELAY 500
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#define DHT_DELAY 10000
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// STRING Commands
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#define KEY_RESET 'R'
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#define KEY_READ 'E'
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#define KEY_ECHO '!'
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#define KEY_SET 'S'
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//MPD
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#define KEY_VOLUME 'V'
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#define KEY_TITLE 'T'
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#define KEY_ARTIST 'A'
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#define KEY_ALBUM 'a'
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#define KEY_REPEAT 'r'
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#define KEY_SHUFFLE 'z'
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#define KEY_RANDOM 'x'
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#define KEY_CONSUME 'c'
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#define KEY_UPDATE 'u'
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#define KEY_SINGLE 's'
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#define KEY_PLAYING 'P'
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//Sensors
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#define KEY_DHT_HUMIDITY 'h'
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#define KEY_DHT_TEMPERATURE 't'
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// DHT
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#include <DHT.h>
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#define DHTPIN 7 // what pin we're connected to
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#define DHTTYPE DHT22 // DHT 22 (AM2302)
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DHT dht(DHTPIN, DHTTYPE); //// Initialize DHT sensor for normal 16mhz Arduino
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// OLED thingies
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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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//Functionality
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#define OLED_RESET 4
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Adafruit_SSD1306 display(OLED_RESET);
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#define NUMFLAKES 10
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#define XPOS 0
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#define YPOS 1
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#define DELTAY 2
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#define LOGO16_GLCD_HEIGHT 16
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#define LOGO16_GLCD_WIDTH 16
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static const unsigned char PROGMEM logo16_glcd_bmp[] =
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{ B00000000, B11000000,
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B00000001, B11000000,
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B00000001, B11000000,
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B00000011, B11100000,
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B11110011, B11100000,
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B11111110, B11111000,
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B01111110, B11111111,
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B00110011, B10011111,
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B00011111, B11111100,
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B00001101, B01110000,
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B00011011, B10100000,
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B00111111, B11100000,
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B00111111, B11110000,
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B01111100, B11110000,
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B01110000, B01110000,
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B00000000, B00110000 };
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#if (SSD1306_LCDHEIGHT != 32)
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#error("Height incorrect, please fix Adafruit_SSD1306.h!");
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#endif
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// Vars
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String inputString = ""; // a string to hold incoming data
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boolean stringComplete = false; // whether the string is complete
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boolean repeat_bool = false;
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boolean shuffle_bool = false;
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boolean consume_bool = false;
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boolean random_bool = false;
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boolean updating_bool = false;
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boolean single_bool = false;
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boolean playing = false;
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int volume = 100;
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String title = " << << Title >> >> ";
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String artist = " << << Artist >> >> ";
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String album = " << << Album >> >> ";
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float humidity = 0;
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float temperature = 0;
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unsigned int tick = 0;
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unsigned int maxticks = 0;
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void setup() {
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// initialise serial
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Serial.begin(BAUD);
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// by default, we'll generate the high voltage from the 3.3v line internally! (neat!)
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display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3C (for the 128x32)
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// init done
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display.clearDisplay();
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display.display();
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delay(MAIN_DELAY);
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initial_layout();
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while(!Serial);
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establishContact();
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layout(tick);
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calcMaxTicks();
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}
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void loop() {
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// print the string when a newline arrives:
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if (stringComplete) {
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setFromSerial( inputString );
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// clear the string:
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inputString = "";
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stringComplete = false;
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}
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layout(tick++);
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update_sensor_readings(tick);
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if ( tick > maxticks ) tick = 0;
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delay(MAIN_DELAY);
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}
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29
mpduino/rot_encoder.ino
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29
mpduino/rot_encoder.ino
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/* Functions to control playback */
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void nextSong() {
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}
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void forward() {
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}
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void prevSong() {
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}
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void backward() {
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}
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void pause() {
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}
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void voldown() {
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}
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void volup() {
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}
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14
mpduino/sensors.ino
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14
mpduino/sensors.ino
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/*
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Main function for sensors
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*/
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void update_sensor_readings( unsigned int tick ){
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if ( tick % (DHT_DELAY / MAIN_DELAY) == 0)
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{
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humidity = dht.readHumidity();
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temperature = dht.readTemperature();
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writeDHT(humidity, temperature);
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}
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}
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88
mpduino/serial.ino
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88
mpduino/serial.ino
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/*
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SerialEvent occurs whenever a new data comes in the
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hardware serial RX. This routine is run between each
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time loop() runs, so using delay inside loop can delay
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response. Multiple bytes of data may be available.
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*/
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void serialEvent() {
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while (Serial.available()) {
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// get the new byte:
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char inChar = (char)Serial.read();
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// add it to the inputString:
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inputString += inChar;
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// if the incoming character is a newline, set a flag
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// so the main loop can do something about it:
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if (inChar == '\n') {
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stringComplete = true;
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}
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}
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}
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void establishContact(){
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while (Serial.available() <= 0) {
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Serial.println(KEY_RESET); // send an initial string
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delay(300);
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}
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Serial.println(KEY_RESET+KEY_RESET+KEY_RESET+KEY_RESET);
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}
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void setFromSerial (String inputString) {
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//remove newline
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inputString = inputString.substring(0, inputString.length() -1);
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char operation1 = inputString.charAt(0);
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String string = "";
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if ( operation1 == KEY_READ ){
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//Echo string like: EV means echo volume
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switch ( inputString.charAt(1) ) {
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case KEY_VOLUME: string = volume; break;
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case KEY_TITLE: string = title; break;
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case KEY_ARTIST: string = artist; break;
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case KEY_ALBUM: string = album; break;
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case KEY_REPEAT: string = repeat_bool; break;
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case KEY_SHUFFLE: string = shuffle_bool; break;
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case KEY_RANDOM: string = random_bool; break;
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// case KEY_CONSUME: string = consume_bool; break;
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// case KEY_UPDATE: string = updating_bool; break;
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// case KEY_SINGLE: string = single_bool; break;
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case KEY_PLAYING: string = playing; break;
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case KEY_DHT_HUMIDITY: string = humidity; break;
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case KEY_DHT_TEMPERATURE: string = temperature; break;
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default: string = KEY_ECHO; break;
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}
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Serial.println(string);
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}
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else if ( operation1 == KEY_SET ){
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bool success = true;
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string = inputString.substring(2);
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switch ( inputString.charAt(1) ) {
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case KEY_VOLUME: volume = string.toInt(); break;
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case KEY_TITLE: title = string; break;
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case KEY_ARTIST: artist = string; break;
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case KEY_ALBUM: album = string; break;
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case KEY_REPEAT: repeat_bool = (string != '0'); break;
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case KEY_SHUFFLE: shuffle_bool = (string != '0'); break;
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case KEY_RANDOM: random_bool = (string != '0'); break;
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// case KEY_CONSUME: consume_bool = (string != '0'); break;
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// case KEY_UPDATE: updating_bool = (string != '0'); break;
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// case KEY_SINGLE: single_bool = (string != '0'); break;
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case KEY_PLAYING: playing = (string != '0'); break;
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//Echo
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case KEY_ECHO: Serial.println(string); break;
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default: success = false; break;
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}
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calcMaxTicks();
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Serial.println(int(success), DEC);
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}
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else Serial.println(-1, DEC);
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}
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// write to serial from arduino
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void writeDHT(float humidity, float temperature){
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Serial.println(KEY_DHT_HUMIDITY+String(humidity));
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delay(100);
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Serial.println(KEY_DHT_TEMPERATURE+String(temperature));
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}
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