├── LiquidCrystal_I2C ├── GitHub.txt ├── examples │ ├── HelloWorld │ │ └── HelloWorld.ino │ ├── BlinkingCursor │ │ └── BlinkingCursor.ino │ ├── SerialDisplay │ │ └── SerialDisplay.ino │ └── CustomChars │ │ └── CustomChars.ino ├── README.txt ├── keywords.txt ├── LiquidCrystal_I2C.h └── LiquidCrystal_I2C.cpp ├── DigiSpark_ATTiny85_DoubleBlink └── DigiSpark_ATTiny85_DoubleBlink.ino ├── TinyWireM ├── keywords.txt ├── TinyWireM.h ├── examples │ ├── Tiny85_Temp │ │ └── Tiny85_Temp.pde │ ├── Tiny85_Temp_LCD │ │ └── Tiny85_Temp_LCD.pde │ └── Tiny85_Temp_LCD_RTC │ │ └── Tiny85_Temp_LCD_RTC.pde ├── TinyWireM.cpp ├── USI_TWI_Master.h └── USI_TWI_Master.cpp ├── ATTiny85_I2C_LCD_Demo └── ATTiny85_I2C_LCD_Demo.ino ├── ATTiny85_RGB_Demo ├── ATTiny85_RGB_Demo.ino └── ATTiny85_RGB_FadeDemo.ino ├── README.md ├── ATTiny85_TempDS18B20_Sensor └── ATTiny85_TempDS18B20_Sensor.ino ├── ATTiny85_RGB_Fade_Demo └── ATTiny85_RGB_Fade_Demo.ino └── LICENSE /LiquidCrystal_I2C/GitHub.txt: -------------------------------------------------------------------------------- 1 | https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library -------------------------------------------------------------------------------- /LiquidCrystal_I2C/examples/HelloWorld/HelloWorld.ino: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | // Set the LCD address to 0x27 for a 16 chars and 2 line display 5 | LiquidCrystal_I2C lcd(0x27, 16, 2); 6 | 7 | void setup() 8 | { 9 | // initialize the LCD 10 | lcd.begin(); 11 | 12 | // Turn on the blacklight and print a message. 13 | lcd.backlight(); 14 | lcd.print("Hello, world!"); 15 | } 16 | 17 | void loop() 18 | { 19 | // Do nothing here... 20 | } 21 | -------------------------------------------------------------------------------- /LiquidCrystal_I2C/README.txt: -------------------------------------------------------------------------------- 1 | # Installation # 2 | Create a new folder called "LiquidCrystal_I2C" under the folder named "libraries" in your Arduino sketchbook folder. 3 | Create the folder "libraries" in case it does not exist yet. Place all the files in the "LiquidCrystal_I2C" folder. 4 | 5 | # Usage # 6 | To use the library in your own sketch, select it from *Sketch > Import Library*. 7 | 8 | ------------------------------------------------------------------------------------------------------------------- 9 | This library is based on work done by DFROBOT (www.dfrobot.com). -------------------------------------------------------------------------------- /LiquidCrystal_I2C/examples/BlinkingCursor/BlinkingCursor.ino: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | // Set the LCD address to 0x27 for a 16 chars and 2 line display 5 | LiquidCrystal_I2C lcd(0x27, 16, 2); 6 | 7 | void setup() 8 | { 9 | // initialize the LCD 10 | lcd.begin(); 11 | } 12 | 13 | void loop() 14 | { 15 | bool blinking = true; 16 | lcd.cursor(); 17 | 18 | while (1) { 19 | if (blinking) { 20 | lcd.clear(); 21 | lcd.print("No cursor blink"); 22 | lcd.noBlink(); 23 | blinking = false; 24 | } else { 25 | lcd.clear(); 26 | lcd.print("Cursor blink"); 27 | lcd.blink(); 28 | blinking = true; 29 | } 30 | delay(4000); 31 | } 32 | } 33 | -------------------------------------------------------------------------------- /DigiSpark_ATTiny85_DoubleBlink/DigiSpark_ATTiny85_DoubleBlink.ino: -------------------------------------------------------------------------------- 1 | #define LED 0 2 | 3 | // the setup routine runs once when you press reset: 4 | void setup() { 5 | // initialize the digital pin as an output. 6 | pinMode(LED, OUTPUT); //LED on Model B 7 | //pinMode(1, OUTPUT); //LED on Model A or Pro 8 | 9 | //pinMode(2, INPUT); 10 | } 11 | 12 | // the loop routine runs over and over again forever: 13 | void loop() { 14 | //if (digitalRead(2) == LOW) 15 | { 16 | 17 | digitalWrite(LED, HIGH); 18 | delay(150); 19 | 20 | digitalWrite(LED, LOW); 21 | delay(150); 22 | 23 | digitalWrite(LED, HIGH); 24 | delay(150); 25 | 26 | digitalWrite(LED, LOW); 27 | delay(1000); 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /TinyWireM/keywords.txt: -------------------------------------------------------------------------------- 1 | ####################################### 2 | # Syntax Coloring Map For TinyWireM 3 | ####################################### 4 | 5 | ####################################### 6 | # Datatypes (KEYWORD1) 7 | ####################################### 8 | 9 | ####################################### 10 | # Methods and Functions (KEYWORD2) 11 | ####################################### 12 | 13 | begin KEYWORD2 14 | beginTransmission KEYWORD2 15 | endTransmission KEYWORD2 16 | requestFrom KEYWORD2 17 | send KEYWORD2 18 | receive KEYWORD2 19 | 20 | ####################################### 21 | # Instances (KEYWORD2) 22 | ####################################### 23 | 24 | TinyWireM KEYWORD2 25 | 26 | ####################################### 27 | # Constants (LITERAL1) 28 | ####################################### 29 | 30 | -------------------------------------------------------------------------------- /ATTiny85_I2C_LCD_Demo/ATTiny85_I2C_LCD_Demo.ino: -------------------------------------------------------------------------------- 1 | // ATTINY85 I2C to LCD demo 2 | 3 | #include // I2C Master lib for ATTinys which use USI 4 | #include // for LCD w/ GPIO MODIFIED for the ATtiny85 5 | 6 | #define GPIO_ADDR 0x27 // (PCA8574A A0-A2 @5V) typ. A0-A3 Gnd 0x20 / 0x38 for A 7 | LiquidCrystal_I2C lcd(GPIO_ADDR, 16, 2); // set address & 16 chars / 2 lines 8 | 9 | void setup() { 10 | TinyWireM.begin(); // initialize I2C lib 11 | lcd.init(); // initialize the lcd 12 | lcd.backlight(); // Print a message to the LCD. 13 | lcd.print("Hello, Temp!"); 14 | delay (2000); 15 | } 16 | 17 | void loop() { 18 | /* 19 | lcd.clear(); // display it 20 | lcd.print("C: "); 21 | lcd.print(tempC,DEC); 22 | lcd.setCursor(7,0); 23 | lcd.print("F: "); 24 | */ 25 | } 26 | -------------------------------------------------------------------------------- /LiquidCrystal_I2C/examples/SerialDisplay/SerialDisplay.ino: -------------------------------------------------------------------------------- 1 | /** 2 | * Displays text sent over the serial port (e.g. from the Serial Monitor) on 3 | * an attached LCD. 4 | */ 5 | #include 6 | #include 7 | 8 | // Set the LCD address to 0x27 for a 16 chars and 2 line display 9 | LiquidCrystal_I2C lcd(0x27, 16, 2); 10 | 11 | void setup() 12 | { 13 | lcd.begin(); 14 | lcd.backlight(); 15 | 16 | // Initialize the serial port at a speed of 9600 baud 17 | Serial.begin(9600); 18 | } 19 | 20 | void loop() 21 | { 22 | // If characters arrived over the serial port... 23 | if (Serial.available()) { 24 | // Wait a bit for the entire message to arrive 25 | delay(100); 26 | // Clear the screen 27 | lcd.clear(); 28 | 29 | // Write all characters received with the serial port to the LCD. 30 | while (Serial.available() > 0) { 31 | lcd.write(Serial.read()); 32 | } 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /ATTiny85_RGB_Demo/ATTiny85_RGB_Demo.ino: -------------------------------------------------------------------------------- 1 | // RGB_Tiny Board Testing for Common Anode Rgb Leds 2 | // with LOW it lgiths up the led and with HIGH it lights off because its INVERTED due to common anode rgb led 3 | 4 | // Defining ATtiny pins with RGB Led pins 5 | const int redPin = 2; 6 | const int grnPin = 1; 7 | const int bluPin = 0; 8 | int del = 500; // delay 9 | 10 | // Setup for outputs 11 | void setup() 12 | { 13 | 14 | pinMode(redPin, OUTPUT); 15 | pinMode(grnPin, OUTPUT); 16 | pinMode(bluPin, OUTPUT); 17 | 18 | digitalWrite(redPin, HIGH); 19 | digitalWrite(bluPin, HIGH); 20 | digitalWrite(grnPin, HIGH); 21 | 22 | } 23 | 24 | // Loop for fading 25 | void loop() { 26 | digitalWrite(redPin, LOW); 27 | delay(del); 28 | digitalWrite(redPin, HIGH); 29 | delay(del/2); 30 | digitalWrite(bluPin, LOW); 31 | delay(del); 32 | digitalWrite(bluPin, HIGH); 33 | delay(del/2); 34 | digitalWrite(grnPin, LOW); 35 | delay(del); 36 | digitalWrite(grnPin, HIGH); 37 | delay(del/2); 38 | digitalWrite(redPin, LOW); 39 | digitalWrite(bluPin, LOW); 40 | digitalWrite(grnPin, LOW); 41 | delay(del); 42 | digitalWrite(redPin, HIGH); 43 | digitalWrite(bluPin, HIGH); 44 | digitalWrite(grnPin, HIGH); 45 | delay(del/2); 46 | } 47 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ATTiny85 2 | Several sketches and library files that work with the ATTiny85. 3 | To be used in conjunction with Youtube video #82 https://www.youtube.com/c/RalphBacon 4 | 5 | 6 | 7 | Add this address to File > Preferences > Additional Boards Manager URLs 8 | https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json 9 | 10 | Other boards can be added too if you want: 11 | https://raw.githubusercontent.com/sparkfun/Arduino_Boards/master/IDE_Board_Manager/package_sparkfun_index.json 12 | http://digistump.com/package_digistump_index.json 13 | http://arduino.esp8266.com/stable/package_esp8266com_index.json 14 | 15 | Arduino Playground article on I2C for the ATTiny85 (Master & Slave) 16 | http://playground.arduino.cc/Code/USIi2c 17 | 18 | ATTiny85 Spec Sheet 19 | http://www.atmel.com/images/atmel-2586-avr-8-bit-microcontroller-attiny25-attiny45-attiny85_datasheet.pdf 20 | 21 | DS18B20 Datasheet (OneWire) 22 | https://datasheets.maximintegrated.com/en/ds/DS18B20.pdf 23 | 24 | Arduino/ATTiny85 website (contains RGB LED fader sketch for ATTiny85) 25 | http://attiny85.blogspot.co.uk/2013/05/rgb-tiny-rgb-led-controlled-by-attiny85.html 26 | -------------------------------------------------------------------------------- /LiquidCrystal_I2C/keywords.txt: -------------------------------------------------------------------------------- 1 | ########################################### 2 | # Syntax Coloring Map For LiquidCrystal_I2C 3 | ########################################### 4 | 5 | ########################################### 6 | # Datatypes (KEYWORD1) 7 | ########################################### 8 | 9 | LiquidCrystal_I2C KEYWORD1 10 | 11 | ########################################### 12 | # Methods and Functions (KEYWORD2) 13 | ########################################### 14 | init KEYWORD2 15 | begin KEYWORD2 16 | clear KEYWORD2 17 | home KEYWORD2 18 | noDisplay KEYWORD2 19 | display KEYWORD2 20 | noBlink KEYWORD2 21 | blink KEYWORD2 22 | noCursor KEYWORD2 23 | cursor KEYWORD2 24 | scrollDisplayLeft KEYWORD2 25 | scrollDisplayRight KEYWORD2 26 | leftToRight KEYWORD2 27 | rightToLeft KEYWORD2 28 | shiftIncrement KEYWORD2 29 | shiftDecrement KEYWORD2 30 | noBacklight KEYWORD2 31 | backlight KEYWORD2 32 | autoscroll KEYWORD2 33 | noAutoscroll KEYWORD2 34 | createChar KEYWORD2 35 | setCursor KEYWORD2 36 | print KEYWORD2 37 | blink_on KEYWORD2 38 | blink_off KEYWORD2 39 | cursor_on KEYWORD2 40 | cursor_off KEYWORD2 41 | setBacklight KEYWORD2 42 | load_custom_character KEYWORD2 43 | printstr KEYWORD2 44 | ########################################### 45 | # Constants (LITERAL1) 46 | ########################################### 47 | -------------------------------------------------------------------------------- /LiquidCrystal_I2C/examples/CustomChars/CustomChars.ino: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | 4 | uint8_t bell[8] = {0x4, 0xe, 0xe, 0xe, 0x1f, 0x0, 0x4}; 5 | uint8_t note[8] = {0x2, 0x3, 0x2, 0xe, 0x1e, 0xc, 0x0}; 6 | uint8_t clock[8] = {0x0, 0xe, 0x15, 0x17, 0x11, 0xe, 0x0}; 7 | uint8_t heart[8] = {0x0, 0xa, 0x1f, 0x1f, 0xe, 0x4, 0x0}; 8 | uint8_t duck[8] = {0x0, 0xc, 0x1d, 0xf, 0xf, 0x6, 0x0}; 9 | uint8_t check[8] = {0x0, 0x1 ,0x3, 0x16, 0x1c, 0x8, 0x0}; 10 | uint8_t cross[8] = {0x0, 0x1b, 0xe, 0x4, 0xe, 0x1b, 0x0}; 11 | uint8_t retarrow[8] = { 0x1, 0x1, 0x5, 0x9, 0x1f, 0x8, 0x4}; 12 | 13 | // Set the LCD address to 0x27 for a 16 chars and 2 line display 14 | LiquidCrystal_I2C lcd(0x27, 16, 2); 15 | 16 | void setup() 17 | { 18 | lcd.begin(); 19 | lcd.backlight(); 20 | 21 | lcd.createChar(0, bell); 22 | lcd.createChar(1, note); 23 | lcd.createChar(2, clock); 24 | lcd.createChar(3, heart); 25 | lcd.createChar(4, duck); 26 | lcd.createChar(5, check); 27 | lcd.createChar(6, cross); 28 | lcd.createChar(7, retarrow); 29 | lcd.home(); 30 | 31 | lcd.print("Hello world..."); 32 | lcd.setCursor(0, 1); 33 | lcd.print(" i "); 34 | lcd.write(3); 35 | lcd.print(" arduinos!"); 36 | delay(5000); 37 | displayKeyCodes(); 38 | } 39 | 40 | // display all keycodes 41 | void displayKeyCodes(void) { 42 | uint8_t i = 0; 43 | 44 | while (1) { 45 | lcd.clear(); 46 | lcd.print("Codes 0x"); 47 | lcd.print(i, HEX); 48 | lcd.print("-0x"); 49 | lcd.print(i + 16, HEX); 50 | lcd.setCursor(0, 1); 51 | 52 | for (int j = 0; j < 16; j++) { 53 | lcd.write(i + j); 54 | } 55 | i += 16; 56 | 57 | delay(4000); 58 | } 59 | } 60 | 61 | void loop() 62 | { 63 | // Do nothing here... 64 | } 65 | 66 | -------------------------------------------------------------------------------- /ATTiny85_TempDS18B20_Sensor/ATTiny85_TempDS18B20_Sensor.ino: -------------------------------------------------------------------------------- 1 | /* 2 | * Demo sketch for ATTiny85 using I2C driving a standard 16 x 2 LCD 3 | * with PCF8574AT driver chip (that uses the I2C to communicatate with 4 | * both the Tiny85 and the LCD - a middleman) 5 | */ 6 | // This library is modified to serve standard Arduino boards AND ATTiny85 7 | // The main difference is that the Wire.h library is included for standard 8 | // Arduino boards, but the TinyWireM.h library is used for ATTiny85 9 | #include 10 | 11 | // Measure temp using a DS18B20 one wire device 12 | #include 13 | #include 14 | 15 | // Pin connections (also for ATTiny85 Development board) 16 | /* 17 | * Connect your LCD display as follows to the Tiny85 (pin numbers refer 18 | * to the physical pins of the chip starting with pin 1 in top left corner 19 | * and working round the chip ANTI-CLOCKWISE with pin 8 top right corner. 20 | * 21 | * SDA - pin 5 22 | * SCL - pin 7 23 | * 24 | * ATTiny85 Pin Use Summary: 25 | * 26 | * ATtiny Pin 1 = (RESET) Not Used ATtiny Pin 2 = (D3) Not used 27 | * ATtiny Pin 3 = (D4) to LED1 ATtiny Pin 4 = GND 28 | * ATtiny Pin 5 = SDA & GPIO ATtiny Pin 6 = (D1) to LED2 29 | * ATtiny Pin 7 = SCL & GPIO ATtiny Pin 8 = VCC (2.7-5.5V) 30 | */ 31 | 32 | /* 33 | * Set the LCD address for a 16 chars and 2 line display. 34 | * 35 | * This is determined by whether the pads on the backpack PCF8574AT 36 | * has had any of the A0/A1/A2 solder pads bridged 37 | * 38 | * None bridged: 0x3F 39 | * 40 | * Address can range from 0x38 to 0x3F depending on which pads are 41 | * bridged. See http://www.nxp.com/documents/data_sheet/PCF8574_PCF8574A.pdf 42 | * section 7.11 for further details. 43 | */ 44 | uint8_t hexAddr = 0x3F; 45 | 46 | // It's a 16 x 2 LCD device in this demo. 47 | uint8_t rows = 2; 48 | uint8_t cols = 16; 49 | 50 | // Instantiate the LCD object with all these parameters 51 | LiquidCrystal_I2C lcd(hexAddr, cols, rows); 52 | 53 | // One wire on GPIO pin 54 | OneWire onewire(1); 55 | DallasTemperature tempSensor(&onewire); 56 | 57 | // ------------------------------------------------------------------- 58 | // 59 | // ------------------------------------------------------------------- 60 | void setup() 61 | { 62 | // initialize the LCD. NB do not use begin() use init() now. 63 | lcd.init(); 64 | 65 | // Start the temperature sensor 66 | tempSensor.begin(); 67 | 68 | // Turn on the blacklight, clear the display and print a message. 69 | lcd.backlight(); 70 | lcd.clear(); 71 | 72 | lcd.print("Found: "); 73 | lcd.print(String(tempSensor.getDeviceCount())); 74 | } 75 | 76 | // ------------------------------------------------------------------- 77 | // 78 | // ------------------------------------------------------------------- 79 | void loop() 80 | { 81 | tempSensor.requestTemperatures(); 82 | delay(1000); 83 | float celsius = tempSensor.getTempCByIndex(0); 84 | 85 | lcd.setCursor(0,1); // column, row (zero based) 86 | lcd.print(celsius); 87 | } 88 | -------------------------------------------------------------------------------- /ATTiny85_RGB_Fade_Demo/ATTiny85_RGB_Fade_Demo.ino: -------------------------------------------------------------------------------- 1 | // ATtiny RGB Fading for Common Anode Rgb Leds 2 | 3 | // Defining ATtiny pins with RGB Led pins 4 | const int redPin = 2; 5 | const int grnPin = 1; 6 | const int bluPin = 0; 7 | 8 | // Setup for outputs 9 | void setup() 10 | { 11 | pinMode(redPin, OUTPUT); 12 | pinMode(grnPin, OUTPUT); 13 | pinMode(bluPin, OUTPUT); 14 | } 15 | 16 | // Loop for fading 17 | void loop() { 18 | redtoyellow(); 19 | yellowtogreen(); 20 | greentocyan(); 21 | cyantoblue(); 22 | bluetomagenta(); 23 | magentatored(); 24 | } 25 | 26 | // Functions for fade between 2 colors 27 | void redtoyellow() 28 | { 29 | digitalWrite(redPin, LOW); 30 | digitalWrite(bluPin, HIGH); 31 | 32 | // fade up green 33 | for(byte i=1; i<100; i++) { 34 | byte on = i; 35 | byte off = 100-on; 36 | for( byte a=0; a<100; a++ ) { 37 | digitalWrite(grnPin, LOW); 38 | delayMicroseconds(on); 39 | digitalWrite(grnPin, HIGH); 40 | delayMicroseconds(off); 41 | } 42 | } 43 | } 44 | 45 | void yellowtogreen() 46 | { 47 | digitalWrite(grnPin, LOW); 48 | digitalWrite(bluPin, HIGH); 49 | 50 | // fade down red 51 | for(byte i=1; i<100; i++) { 52 | byte on = 100-i; 53 | byte off = i; 54 | for( byte a=0; a<100; a++ ) { 55 | digitalWrite(redPin, LOW); 56 | delayMicroseconds(on); 57 | digitalWrite(redPin, HIGH); 58 | delayMicroseconds(off); 59 | } 60 | } 61 | } 62 | 63 | void greentocyan() 64 | { 65 | digitalWrite(grnPin, LOW); 66 | digitalWrite(redPin, HIGH); 67 | 68 | // fade up blue 69 | for(byte i=1; i<100; i++) { 70 | byte on = i; 71 | byte off = 100-on; 72 | for( byte a=0; a<100; a++ ) { 73 | digitalWrite(bluPin, LOW); 74 | delayMicroseconds(on); 75 | digitalWrite(bluPin, HIGH); 76 | delayMicroseconds(off); 77 | } 78 | } 79 | } 80 | 81 | void cyantoblue() 82 | { 83 | digitalWrite(bluPin, LOW); 84 | digitalWrite(redPin, HIGH); 85 | 86 | // fade down green 87 | for(byte i=1; i<100; i++) { 88 | byte on = 100-i; 89 | byte off = i; 90 | for( byte a=0; a<100; a++ ) { 91 | digitalWrite(grnPin, LOW); 92 | delayMicroseconds(on); 93 | digitalWrite(grnPin, HIGH); 94 | delayMicroseconds(off); 95 | } 96 | } 97 | } 98 | 99 | void bluetomagenta() 100 | { 101 | digitalWrite(bluPin, LOW); 102 | digitalWrite(grnPin, HIGH); 103 | 104 | // fade up red 105 | for(byte i=1; i<100; i++) { 106 | byte on = i; 107 | byte off = 100-on; 108 | for( byte a=0; a<100; a++ ) { 109 | digitalWrite(redPin, LOW); 110 | delayMicroseconds(on); 111 | digitalWrite(redPin, HIGH); 112 | delayMicroseconds(off); 113 | } 114 | } 115 | } 116 | 117 | void magentatored() 118 | { 119 | digitalWrite(redPin, LOW); 120 | digitalWrite(grnPin, HIGH); 121 | 122 | // fade down blue 123 | for(byte i=1; i<100; i++) { 124 | byte on = 100-i; 125 | byte off = i; 126 | for( byte a=0; a<100; a++ ) { 127 | digitalWrite(bluPin, LOW); 128 | delayMicroseconds(on); 129 | digitalWrite(bluPin, HIGH); 130 | delayMicroseconds(off); 131 | } 132 | } 133 | } 134 | -------------------------------------------------------------------------------- /ATTiny85_RGB_Demo/ATTiny85_RGB_FadeDemo.ino: -------------------------------------------------------------------------------- 1 | // ATtiny RGB Fading for Common Anode Rgb Leds 2 | 3 | // Defining ATtiny pins with RGB Led pins 4 | const int redPin = 2; 5 | const int grnPin = 1; 6 | const int bluPin = 0; 7 | 8 | // Setup for outputs 9 | void setup() 10 | { 11 | pinMode(redPin, OUTPUT); 12 | pinMode(grnPin, OUTPUT); 13 | pinMode(bluPin, OUTPUT); 14 | } 15 | 16 | // Loop for fading 17 | void loop() { 18 | redtoyellow(); 19 | yellowtogreen(); 20 | greentocyan(); 21 | cyantoblue(); 22 | bluetomagenta(); 23 | magentatored(); 24 | } 25 | 26 | // Functions for fade between 2 colors 27 | void redtoyellow() 28 | { 29 | digitalWrite(redPin, LOW); 30 | digitalWrite(bluPin, HIGH); 31 | 32 | // fade up green 33 | for(byte i=1; i<100; i++) { 34 | byte on = i; 35 | byte off = 100-on; 36 | for( byte a=0; a<100; a++ ) { 37 | digitalWrite(grnPin, LOW); 38 | delayMicroseconds(on); 39 | digitalWrite(grnPin, HIGH); 40 | delayMicroseconds(off); 41 | } 42 | } 43 | } 44 | 45 | void yellowtogreen() 46 | { 47 | digitalWrite(grnPin, LOW); 48 | digitalWrite(bluPin, HIGH); 49 | 50 | // fade down red 51 | for(byte i=1; i<100; i++) { 52 | byte on = 100-i; 53 | byte off = i; 54 | for( byte a=0; a<100; a++ ) { 55 | digitalWrite(redPin, LOW); 56 | delayMicroseconds(on); 57 | digitalWrite(redPin, HIGH); 58 | delayMicroseconds(off); 59 | } 60 | } 61 | } 62 | 63 | void greentocyan() 64 | { 65 | digitalWrite(grnPin, LOW); 66 | digitalWrite(redPin, HIGH); 67 | 68 | // fade up blue 69 | for(byte i=1; i<100; i++) { 70 | byte on = i; 71 | byte off = 100-on; 72 | for( byte a=0; a<100; a++ ) { 73 | digitalWrite(bluPin, LOW); 74 | delayMicroseconds(on); 75 | digitalWrite(bluPin, HIGH); 76 | delayMicroseconds(off); 77 | } 78 | } 79 | } 80 | 81 | void cyantoblue() 82 | { 83 | digitalWrite(bluPin, LOW); 84 | digitalWrite(redPin, HIGH); 85 | 86 | // fade down green 87 | for(byte i=1; i<100; i++) { 88 | byte on = 100-i; 89 | byte off = i; 90 | for( byte a=0; a<100; a++ ) { 91 | digitalWrite(grnPin, LOW); 92 | delayMicroseconds(on); 93 | digitalWrite(grnPin, HIGH); 94 | delayMicroseconds(off); 95 | } 96 | } 97 | } 98 | 99 | void bluetomagenta() 100 | { 101 | digitalWrite(bluPin, LOW); 102 | digitalWrite(grnPin, HIGH); 103 | 104 | // fade up red 105 | for(byte i=1; i<100; i++) { 106 | byte on = i; 107 | byte off = 100-on; 108 | for( byte a=0; a<100; a++ ) { 109 | digitalWrite(redPin, LOW); 110 | delayMicroseconds(on); 111 | digitalWrite(redPin, HIGH); 112 | delayMicroseconds(off); 113 | } 114 | } 115 | } 116 | 117 | void magentatored() 118 | { 119 | digitalWrite(redPin, LOW); 120 | digitalWrite(grnPin, HIGH); 121 | 122 | // fade down blue 123 | for(byte i=1; i<100; i++) { 124 | byte on = 100-i; 125 | byte off = i; 126 | for( byte a=0; a<100; a++ ) { 127 | digitalWrite(bluPin, LOW); 128 | delayMicroseconds(on); 129 | digitalWrite(bluPin, HIGH); 130 | delayMicroseconds(off); 131 | } 132 | } 133 | } 134 | 135 | 136 | 137 | -------------------------------------------------------------------------------- /TinyWireM/TinyWireM.h: -------------------------------------------------------------------------------- 1 | /* 2 | TinyWireM.h - a wrapper(+) class for TWI/I2C Master library for the ATtiny on Arduino 3 | 1/21/2011 BroHogan - brohoganx10 at gmail dot com 4 | 5 | Thanks to 'jkl' for the gcc version of Atmel's USI_TWI_Master code 6 | http://www.cs.cmu.edu/~dst/ARTSI/Create/PC%20Comm/ 7 | I added Atmel's original Device dependant defines section back into USI_TWI_Master.h 8 | 9 | 10 | NOTE! - It's very important to use pullups on the SDA & SCL lines! More so than with the Wire lib. 11 | 12 | USAGE is modeled after the standard Wire library . . . 13 | Put in setup(): 14 | TinyWireM.begin(){ // initialize I2C lib 15 | To Send: 16 | TinyWireM.beginTransmission(uint8_t slaveAddr){ // setup slave's address (7 bit address - same as Wire) 17 | TinyWireM.send(uint8_t data){ // buffer up bytes to send - can be called multiple times 18 | someByte = TinyWireM.endTransmission(){ // actually send the bytes in the buffer 19 | // returns (optional) 0 = sucess or see USI_TWI_Master.h for error codes 20 | To Receive: 21 | someByte = TinyWireM.requestFrom(uint8_t slaveAddr, uint8_t numBytes){ // reads 'numBytes' from slave's address 22 | // (usage optional) returns 0= success or see USI_TWI_Master.h for error codes 23 | someByte = TinyWireM.receive(){ // returns the next byte in the received buffer - called multiple times 24 | someByte = TinyWireM.available(){ // returns the number of unread bytes in the received buffer 25 | 26 | TODO: (by others!) 27 | - merge this class with TinyWireS for master & slave support in one library 28 | 29 | This library is free software; you can redistribute it and/or modify it under the 30 | terms of the GNU General Public License as published by the Free Software 31 | Foundation; either version 2.1 of the License, or any later version. 32 | This program is distributed in the hope that it will be useful, but WITHOUT ANY 33 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 34 | PARTICULAR PURPOSE. See the GNU General Public License for more details. 35 | */ 36 | 37 | #ifndef TinyWireM_h 38 | #define TinyWireM_h 39 | 40 | #include 41 | #define USI_SEND 0 // indicates sending to TWI 42 | #define USI_RCVE 1 // indicates receiving from TWI 43 | #define USI_BUF_SIZE 16 // bytes in message buffer 44 | 45 | class USI_TWI 46 | { 47 | private: 48 | static uint8_t USI_Buf[]; // holds I2C send and receive data 49 | static uint8_t USI_BufIdx; // current number of bytes in the send buff 50 | static uint8_t USI_LastRead; // number of bytes read so far 51 | static uint8_t USI_BytesAvail; // number of bytes requested but not read 52 | 53 | public: 54 | USI_TWI(); 55 | void begin(); 56 | void beginTransmission(uint8_t); 57 | void send(uint8_t); 58 | uint8_t endTransmission(); 59 | uint8_t requestFrom(uint8_t, uint8_t); 60 | uint8_t receive(); 61 | uint8_t available(); 62 | }; 63 | 64 | extern USI_TWI TinyWireM; 65 | 66 | #endif 67 | 68 | -------------------------------------------------------------------------------- /TinyWireM/examples/Tiny85_Temp/Tiny85_Temp.pde: -------------------------------------------------------------------------------- 1 | /* ATtiny85 as an I2C Master Ex1 BroHogan 1/21/11 2 | * I2C master reading DS1621 temperature sensor. (display with leds) 3 | * SETUP: 4 | * ATtiny Pin 1 = (RESET) N/U ATtiny Pin 2 = (D3) LED3 5 | * ATtiny Pin 3 = (D4) to LED1 ATtiny Pin 4 = GND 6 | * ATtiny Pin 5 = SDA on DS1621 ATtiny Pin 6 = (D1) to LED2 7 | * ATtiny Pin 7 = SCK on DS1621 ATtiny Pin 8 = VCC (2.7-5.5V) 8 | * NOTE! - It's very important to use pullups on the SDA & SCL lines! 9 | * DS1621 wired per data sheet. This ex assumes A0-A2 are set LOW for an addeess of 0x48 10 | * TinyWireM USAGE & CREDITS: - see TinyWireM.h 11 | * NOTES: 12 | * The ATtiny85 + DS1621 draws 1.7mA @5V when leds are not on and not reading temp. 13 | * Using sleep mode, they draw .2 @5V @ idle - see http://brownsofa.org/blog/archives/261 14 | */ 15 | 16 | #include // I2C Master lib for ATTinys which use USI 17 | 18 | #define DS1621_ADDR 0x48 // 7 bit I2C address for DS1621 temperature sensor 19 | #define LED1_PIN 4 // ATtiny Pin 3 20 | #define LED2_PIN 1 // ATtiny Pin 6 21 | #define LED3_PIN 3 // ATtiny Pin 2 22 | 23 | int tempC = 0; // holds temp in C 24 | int tempF = 0; // holds temp in F 25 | 26 | 27 | void setup(){ 28 | pinMode(LED1_PIN,OUTPUT); 29 | pinMode(LED2_PIN,OUTPUT); 30 | pinMode(LED3_PIN,OUTPUT); 31 | Blink(LED1_PIN,2); // show it's alive 32 | TinyWireM.begin(); // initialize I2C lib 33 | Init_Temp(); // Setup DS1621 34 | delay (3000); 35 | } 36 | 37 | 38 | void loop(){ 39 | Get_Temp(); 40 | Blink(LED1_PIN,tempC/10); // blink 10's of temperature on LED 1 41 | delay (1000); 42 | Blink(LED2_PIN,tempC%10); // blink 1's of temperature on LED 2 43 | delay (4000); // wait a few sec before next reading 44 | } 45 | 46 | 47 | void Init_Temp(){ // Setup the DS1621 for one-shot mode 48 | TinyWireM.beginTransmission(DS1621_ADDR); 49 | TinyWireM.send(0xAC); // Access Command Register 50 | TinyWireM.send(B00000001); // Using one-shot mode for battery savings 51 | //TinyWireM.send(B00000000); // if setting continious mode for fast reads 52 | TinyWireM.endTransmission(); // Send to the slave 53 | } 54 | 55 | 56 | void Get_Temp(){ // Get the temperature from a DS1621 57 | TinyWireM.beginTransmission(DS1621_ADDR); 58 | TinyWireM.send(0xEE); // if one-shot, start conversions now 59 | TinyWireM.endTransmission(); // Send 1 byte to the slave 60 | delay(750); // if one-shot, must wait ~750 ms for conversion 61 | TinyWireM.beginTransmission(DS1621_ADDR); 62 | TinyWireM.send(0xAA); // read temperature (for either mode) 63 | TinyWireM.endTransmission(); // Send 1 byte to the slave 64 | TinyWireM.requestFrom(DS1621_ADDR,1); // Request 1 byte from slave 65 | tempC = TinyWireM.receive(); // get the temperature 66 | tempF = tempC * 9 / 5 + 32; // convert to Fahrenheit 67 | } 68 | 69 | 70 | void Blink(byte led, byte times){ // poor man's GUI 71 | for (byte i=0; i< times; i++){ 72 | digitalWrite(led,HIGH); 73 | delay (400); 74 | digitalWrite(led,LOW); 75 | delay (175); 76 | } 77 | } 78 | 79 | -------------------------------------------------------------------------------- /TinyWireM/TinyWireM.cpp: -------------------------------------------------------------------------------- 1 | /* 2 | TinyWireM.cpp - a wrapper class for TWI/I2C Master library for the ATtiny on Arduino 3 | 1/21/2011 BroHogan - brohoganx10 at gmail dot com 4 | 5 | **** See TinyWireM.h for Credits and Usage information **** 6 | 7 | This library is free software; you can redistribute it and/or modify it under the 8 | terms of the GNU General Public License as published by the Free Software 9 | Foundation; either version 2.1 of the License, or any later version. 10 | 11 | This program is distributed in the hope that it will be useful, but WITHOUT ANY 12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 13 | PARTICULAR PURPOSE. See the GNU General Public License for more details. 14 | */ 15 | 16 | extern "C" { 17 | //#include "USI_TWI_Master.h" 18 | //#include 19 | //#include 20 | //#include 21 | } 22 | 23 | #include "USI_TWI_Master.h" 24 | #include "TinyWireM.h" 25 | 26 | 27 | // Initialize Class Variables ////////////////////////////////////////////////// 28 | uint8_t USI_TWI::USI_Buf[USI_BUF_SIZE]; // holds I2C send and receive data 29 | uint8_t USI_TWI::USI_BufIdx = 0; // current number of bytes in the send buff 30 | uint8_t USI_TWI::USI_LastRead = 0; // number of bytes read so far 31 | uint8_t USI_TWI::USI_BytesAvail = 0; // number of bytes requested but not read 32 | 33 | // Constructors //////////////////////////////////////////////////////////////// 34 | 35 | USI_TWI::USI_TWI(){ 36 | } 37 | 38 | // Public Methods ////////////////////////////////////////////////////////////// 39 | 40 | void USI_TWI::begin(){ // initialize I2C lib 41 | USI_TWI_Master_Initialise(); 42 | } 43 | 44 | void USI_TWI::beginTransmission(uint8_t slaveAddr){ // setup address & write bit 45 | USI_BufIdx = 0; 46 | USI_Buf[USI_BufIdx] = (slaveAddr<= USI_BUF_SIZE) return; // dont blow out the buffer 51 | USI_BufIdx++; // inc for next byte in buffer 52 | USI_Buf[USI_BufIdx] = data; 53 | } 54 | 55 | uint8_t USI_TWI::endTransmission(){ // actually sends the buffer 56 | bool xferOK = false; 57 | uint8_t errorCode = 0; 58 | xferOK = USI_TWI_Start_Read_Write(USI_Buf,USI_BufIdx+1); // core func that does the work 59 | USI_BufIdx = 0; 60 | if (xferOK) return 0; 61 | else { // there was an error 62 | errorCode = USI_TWI_Get_State_Info(); // this function returns the error number 63 | return errorCode; 64 | } 65 | } 66 | 67 | uint8_t USI_TWI::requestFrom(uint8_t slaveAddr, uint8_t numBytes){ // setup for receiving from slave 68 | bool xferOK = false; 69 | uint8_t errorCode = 0; 70 | USI_LastRead = 0; 71 | USI_BytesAvail = numBytes; // save this off in a global 72 | numBytes++; // add extra byte to transmit header 73 | USI_Buf[0] = (slaveAddr< // I2C Master lib for ATTinys which use USI 18 | #include // for LCD w/ GPIO MODIFIED for the ATtiny85 19 | 20 | #define GPIO_ADDR 0x3F // (PCA8574A A0-A2 @5V) typ. A0-A3 Gnd 0x20 / 0x38 for A 21 | #define DS1621_ADDR 0x48 // 7 bit I2C address for DS1621 temperature sensor 22 | #define LED1_PIN 4 // ATtiny Pin 3 23 | #define LED2_PIN 1 // ATtiny Pin 6 24 | 25 | int tempC = 0; // holds temp in C 26 | int tempF = 0; // holds temp in F 27 | 28 | LiquidCrystal_I2C lcd(GPIO_ADDR,16,2); // set address & 16 chars / 2 lines 29 | 30 | 31 | void setup(){ 32 | #ifdef DEBUG 33 | pinMode(LED1_PIN,OUTPUT); 34 | pinMode(LED2_PIN,OUTPUT); 35 | Blink(LED1_PIN,2); // show it's alive 36 | #endif 37 | TinyWireM.begin(); // initialize I2C lib 38 | Init_Temp(); // Setup DS1621 39 | lcd.init(); // initialize the lcd 40 | lcd.backlight(); // Print a message to the LCD. 41 | lcd.print("Hello, Temp!"); 42 | delay (2000); 43 | } 44 | 45 | 46 | void loop(){ 47 | Get_Temp(); // read current temperature 48 | lcd.clear(); // display it 49 | lcd.print("C: "); 50 | lcd.print(tempC,DEC); 51 | lcd.setCursor(7,0); 52 | lcd.print("F: "); 53 | lcd.print(tempF,DEC); 54 | #ifdef DEBUG 55 | Blink(LED1_PIN,tempC/10); // blink 10's of temperature on LED 1 56 | delay (1000); 57 | Blink(LED2_PIN,tempC%10); // blink 1's of temperature on LED 2 58 | #endif 59 | delay (4000); // wait a few sec before next reading 60 | } 61 | 62 | 63 | void Init_Temp(){ // Setup the DS1621 for one-shot mode 64 | TinyWireM.beginTransmission(DS1621_ADDR); 65 | TinyWireM.send(0xAC); // Access Command Register 66 | TinyWireM.send(B00000001); // Using one-shot mode for battery savings 67 | //TinyWireM.send(B00000000); // if setting continious mode for fast reads 68 | TinyWireM.endTransmission(); // Send to the slave 69 | } 70 | 71 | 72 | void Get_Temp(){ // Get the temperature from a DS1621 73 | TinyWireM.beginTransmission(DS1621_ADDR); 74 | TinyWireM.send(0xEE); // if one-shot, start conversions now 75 | TinyWireM.endTransmission(); // Send 1 byte to the slave 76 | delay(750); // if one-shot, must wait ~750 ms for conversion 77 | TinyWireM.beginTransmission(DS1621_ADDR); 78 | TinyWireM.send(0xAA); // read temperature (for either mode) 79 | TinyWireM.endTransmission(); // Send 1 byte to the slave 80 | TinyWireM.requestFrom(DS1621_ADDR,1); // Request 1 byte from slave 81 | tempC = TinyWireM.receive(); // get the temperature 82 | tempF = tempC * 9 / 5 + 32; // convert to Fahrenheit 83 | } 84 | 85 | 86 | #ifdef DEBUG 87 | void Blink(byte led, byte times){ // poor man's GUI 88 | for (byte i=0; i< times; i++){ 89 | digitalWrite(led,HIGH); 90 | delay (400); 91 | digitalWrite(led,LOW); 92 | delay (175); 93 | } 94 | } 95 | #endif 96 | 97 | -------------------------------------------------------------------------------- /TinyWireM/USI_TWI_Master.h: -------------------------------------------------------------------------------- 1 | /***************************************************************************** 2 | * 3 | * 4 | * File USI_TWI_Master.h compiled with gcc 5 | * Date Friday, 10/31/08 Boo! 6 | * Updated by jkl 7 | * 8 | * 9 | * Supported devices : All device with USI module can be used. 10 | * The example is written for the ATtiny2313 11 | * 12 | * AppNote : AVR310 - Using the USI module as a TWI Master 13 | * 14 | * This is modified to just do I2C communication on ATtiny2313 running at 15 | * 1MHz. Fast mode is probably possible, but would need a faster clock 16 | * and has not been tested. 17 | * 18 | * 12/15/08 Added declaration of USI_TWI_Start_Memory_Read -jkl 19 | ****************************************************************************/ 20 | 21 | //********** Defines **********// 22 | 23 | // Defines controlling timing limits - SCL <= 100KHz. 24 | 25 | #define SYS_CLK 1000.0 // [kHz] Default for ATtiny2313 26 | 27 | // For use with _delay_us() 28 | #define T2_TWI 5 // >4,7us 29 | #define T4_TWI 4 // >4,0us 30 | 31 | // Defines error code generating 32 | //#define PARAM_VERIFICATION 33 | //#define NOISE_TESTING 34 | #define SIGNAL_VERIFY // This should probably be on always. 35 | 36 | /**************************************************************************** 37 | Bit and byte definitions 38 | ****************************************************************************/ 39 | #define TWI_READ_BIT 0 // Bit position for R/W bit in "address byte". 40 | #define TWI_ADR_BITS 1 // Bit position for LSB of the slave address bits in the init byte. 41 | #define TWI_NACK_BIT 0 // Bit position for (N)ACK bit. 42 | 43 | // Note these have been renumbered from the Atmel Apps Note. Most likely errors are now 44 | // lowest numbers so they're easily recognized as LED flashes. 45 | #define USI_TWI_NO_DATA 0x08 // Transmission buffer is empty 46 | #define USI_TWI_DATA_OUT_OF_BOUND 0x09 // Transmission buffer is outside SRAM space 47 | #define USI_TWI_UE_START_CON 0x07 // Unexpected Start Condition 48 | #define USI_TWI_UE_STOP_CON 0x06 // Unexpected Stop Condition 49 | #define USI_TWI_UE_DATA_COL 0x05 // Unexpected Data Collision (arbitration) 50 | #define USI_TWI_NO_ACK_ON_DATA 0x02 // The slave did not acknowledge all data 51 | #define USI_TWI_NO_ACK_ON_ADDRESS 0x01 // The slave did not acknowledge the address 52 | #define USI_TWI_MISSING_START_CON 0x03 // Generated Start Condition not detected on bus 53 | #define USI_TWI_MISSING_STOP_CON 0x04 // Generated Stop Condition not detected on bus 54 | #define USI_TWI_BAD_MEM_READ 0x0A // Error during external memory read 55 | 56 | // Device dependant defines ADDED BACK IN FROM ORIGINAL ATMEL .H 57 | 58 | #if defined(__AVR_AT90Mega169__) | defined(__AVR_ATmega169__) | \ 59 | defined(__AVR_AT90Mega165__) | defined(__AVR_ATmega165__) | \ 60 | defined(__AVR_ATmega325__) | defined(__AVR_ATmega3250__) | \ 61 | defined(__AVR_ATmega645__) | defined(__AVR_ATmega6450__) | \ 62 | defined(__AVR_ATmega329__) | defined(__AVR_ATmega3290__) | \ 63 | defined(__AVR_ATmega649__) | defined(__AVR_ATmega6490__) 64 | #define DDR_USI DDRE 65 | #define PORT_USI PORTE 66 | #define PIN_USI PINE 67 | #define PORT_USI_SDA PORTE5 68 | #define PORT_USI_SCL PORTE4 69 | #define PIN_USI_SDA PINE5 70 | #define PIN_USI_SCL PINE4 71 | #endif 72 | 73 | #if defined(__AVR_ATtiny25__) | defined(__AVR_ATtiny45__) | defined(__AVR_ATtiny85__) | \ 74 | defined(__AVR_AT90Tiny26__) | defined(__AVR_ATtiny26__) 75 | #define DDR_USI DDRB 76 | #define PORT_USI PORTB 77 | #define PIN_USI PINB 78 | #define PORT_USI_SDA PORTB0 79 | #define PORT_USI_SCL PORTB2 80 | #define PIN_USI_SDA PINB0 81 | #define PIN_USI_SCL PINB2 82 | #endif 83 | 84 | #if defined(__AVR_AT90Tiny2313__) | defined(__AVR_ATtiny2313__) 85 | #define DDR_USI DDRB 86 | #define PORT_USI PORTB 87 | #define PIN_USI PINB 88 | #define PORT_USI_SDA PORTB5 89 | #define PORT_USI_SCL PORTB7 90 | #define PIN_USI_SDA PINB5 91 | #define PIN_USI_SCL PINB7 92 | #endif 93 | 94 | /* From the original .h 95 | // Device dependant defines - These for ATtiny2313. // CHANGED FOR ATtiny85 96 | 97 | #define DDR_USI DDRB 98 | #define PORT_USI PORTB 99 | #define PIN_USI PINB 100 | #define PORT_USI_SDA PORTB0 // was PORTB5 - N/U 101 | #define PORT_USI_SCL PORTB2 // was PORTB7 - N/U 102 | #define PIN_USI_SDA PINB0 // was PINB5 103 | #define PIN_USI_SCL PINB2 // was PINB7 104 | */ 105 | 106 | // General defines 107 | #define TRUE 1 108 | #define FALSE 0 109 | 110 | //********** Prototypes **********// 111 | 112 | void USI_TWI_Master_Initialise( void ); 113 | unsigned char USI_TWI_Start_Random_Read( unsigned char * , unsigned char ); 114 | unsigned char USI_TWI_Start_Read_Write( unsigned char * , unsigned char ); 115 | unsigned char USI_TWI_Get_State_Info( void ); 116 | -------------------------------------------------------------------------------- /LiquidCrystal_I2C/LiquidCrystal_I2C.h: -------------------------------------------------------------------------------- 1 | // LiquidCrystal_I2C V2.0 2 | // Note: The original libe file has beem modified to support the ATtiny85 1/20/11 by "BroHogan" 3 | // All changes can be located by searching for "__AVR_ATtiny85__". 4 | 5 | #ifndef LiquidCrystal_I2C_h 6 | #define LiquidCrystal_I2C_h 7 | 8 | #include 9 | #include 10 | 11 | #if defined(__AVR_ATtiny85__) || (__AVR_ATtiny2313__) 12 | #include "TinyWireM.h" // include this if ATtiny85 or ATtiny2313 13 | #else 14 | #include // original lib include 15 | #endif 16 | 17 | // commands 18 | #define LCD_CLEARDISPLAY 0x01 19 | #define LCD_RETURNHOME 0x02 20 | #define LCD_ENTRYMODESET 0x04 21 | #define LCD_DISPLAYCONTROL 0x08 22 | #define LCD_CURSORSHIFT 0x10 23 | #define LCD_FUNCTIONSET 0x20 24 | #define LCD_SETCGRAMADDR 0x40 25 | #define LCD_SETDDRAMADDR 0x80 26 | 27 | // flags for display entry mode 28 | #define LCD_ENTRYRIGHT 0x00 29 | #define LCD_ENTRYLEFT 0x02 30 | #define LCD_ENTRYSHIFTINCREMENT 0x01 31 | #define LCD_ENTRYSHIFTDECREMENT 0x00 32 | 33 | // flags for display on/off control 34 | #define LCD_DISPLAYON 0x04 35 | #define LCD_DISPLAYOFF 0x00 36 | #define LCD_CURSORON 0x02 37 | #define LCD_CURSOROFF 0x00 38 | #define LCD_BLINKON 0x01 39 | #define LCD_BLINKOFF 0x00 40 | 41 | // flags for display/cursor shift 42 | #define LCD_DISPLAYMOVE 0x08 43 | #define LCD_CURSORMOVE 0x00 44 | #define LCD_MOVERIGHT 0x04 45 | #define LCD_MOVELEFT 0x00 46 | 47 | // flags for function set 48 | #define LCD_8BITMODE 0x10 49 | #define LCD_4BITMODE 0x00 50 | #define LCD_2LINE 0x08 51 | #define LCD_1LINE 0x00 52 | #define LCD_5x10DOTS 0x04 53 | #define LCD_5x8DOTS 0x00 54 | 55 | // flags for backlight control 56 | #define LCD_BACKLIGHT 0x08 57 | #define LCD_NOBACKLIGHT 0x00 58 | 59 | #define En B00000100 // Enable bit 60 | #define Rw B00000010 // Read/Write bit 61 | #define Rs B00000001 // Register select bit 62 | 63 | /** 64 | * This is the driver for the Liquid Crystal LCD displays that use the I2C bus. 65 | * 66 | * After creating an instance of this class, first call begin() before anything else. 67 | * The backlight is on by default, since that is the most likely operating mode in 68 | * most cases. 69 | */ 70 | class LiquidCrystal_I2C : public Print { 71 | public: 72 | /** 73 | * Constructor 74 | * 75 | * @param lcd_addr I2C slave address of the LCD display. Most likely printed on the 76 | * LCD circuit board, or look in the supplied LCD documentation. 77 | * @param lcd_cols Number of columns your LCD display has. 78 | * @param lcd_rows Number of rows your LCD display has. 79 | * @param charsize The size in dots that the display has, use LCD_5x10DOTS or LCD_5x8DOTS. 80 | */ 81 | LiquidCrystal_I2C(uint8_t lcd_addr, uint8_t lcd_cols, uint8_t lcd_rows, uint8_t charsize = LCD_5x8DOTS); 82 | 83 | // LiquidCrystal_I2C(uint8_t lcd_Addr, uint8_t lcd_cols, uint8_t lcd_rows); 84 | void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS ); 85 | /** 86 | * Set the LCD display in the correct begin state, must be called before anything else is done. 87 | */ 88 | void begin(); 89 | 90 | /** 91 | * Remove all the characters currently shown. Next print/write operation will start 92 | * from the first position on LCD display. 93 | */ 94 | void clear(); 95 | 96 | /** 97 | * Next print/write operation will will start from the first position on the LCD display. 98 | */ 99 | void home(); 100 | 101 | /** 102 | * Do not show any characters on the LCD display. Backlight state will remain unchanged. 103 | * Also all characters written on the display will return, when the display in enabled again. 104 | */ 105 | void noDisplay(); 106 | 107 | /** 108 | * Show the characters on the LCD display, this is the normal behaviour. This method should 109 | * only be used after noDisplay() has been used. 110 | */ 111 | void display(); 112 | 113 | /** 114 | * Do not blink the cursor indicator. 115 | */ 116 | void noBlink(); 117 | 118 | /** 119 | * Start blinking the cursor indicator. 120 | */ 121 | void blink(); 122 | 123 | /** 124 | * Do not show a cursor indicator. 125 | */ 126 | void noCursor(); 127 | 128 | /** 129 | * Show a cursor indicator, cursor can blink on not blink. Use the 130 | * methods blink() and noBlink() for changing cursor blink. 131 | */ 132 | void cursor(); 133 | void scrollDisplayLeft(); 134 | void scrollDisplayRight(); 135 | void printLeft(); 136 | void printRight(); 137 | void leftToRight(); 138 | void rightToLeft(); 139 | void shiftIncrement(); 140 | void shiftDecrement(); 141 | void noBacklight(); 142 | void backlight(); 143 | void autoscroll(); 144 | void noAutoscroll(); 145 | void createChar(uint8_t, uint8_t[]); 146 | void setCursor(uint8_t, uint8_t); 147 | virtual size_t write(uint8_t); 148 | void command(uint8_t); 149 | void init(); 150 | 151 | inline void blink_on() { blink(); } 152 | inline void blink_off() { noBlink(); } 153 | inline void cursor_on() { cursor(); } 154 | inline void cursor_off() { noCursor(); } 155 | 156 | // Compatibility API function aliases 157 | 158 | void setBacklight(uint8_t new_val); // alias for backlight() and nobacklight() 159 | void load_custom_character(uint8_t char_num, uint8_t *rows); // alias for createChar() 160 | void printstr(const char[]); 161 | 162 | ////Unsupported API functions (not implemented in this library) 163 | uint8_t status(); 164 | void setContrast(uint8_t new_val); 165 | uint8_t keypad(); 166 | void setDelay(int,int); 167 | void on(); 168 | void off(); 169 | uint8_t init_bargraph(uint8_t graphtype); 170 | void draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end); 171 | void draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end); 172 | 173 | private: 174 | void init_priv(); 175 | void send(uint8_t, uint8_t); 176 | void write4bits(uint8_t); 177 | void expanderWrite(uint8_t); 178 | void pulseEnable(uint8_t); 179 | uint8_t _addr; 180 | uint8_t _displayfunction; 181 | uint8_t _displaycontrol; 182 | uint8_t _displaymode; 183 | uint8_t _cols; 184 | uint8_t _rows; 185 | uint8_t _charsize; 186 | uint8_t _backlightval; 187 | }; 188 | 189 | #endif // FDB_LIQUID_CRYSTAL_I2C_H 190 | -------------------------------------------------------------------------------- /TinyWireM/examples/Tiny85_Temp_LCD_RTC/Tiny85_Temp_LCD_RTC.pde: -------------------------------------------------------------------------------- 1 | /* ATtiny85 as an I2C Master Ex3 BroHogan 1/22/11 2 | * I2C master reading DS1621 temperature sensor & DS1307 RTC. Display to I2C GPIO LED. 3 | * SETUP: 4 | * ATtiny Pin 1 = (RESET) N/U ATtiny Pin 2 = (D3) N/U 5 | * ATtiny Pin 3 = (D4) to LED1 ATtiny Pin 4 = GND 6 | * ATtiny Pin 5 = SDA on all devices ATtiny Pin 6 = (D1) to LED2 7 | * ATtiny Pin 7 = SCK on all devices ATtiny Pin 8 = VCC (2.7-5.5V) 8 | * NOTE! - It's very important to use pullups on the SDA & SCL lines! 9 | * DS1621 wired per data sheet. This ex assumes A0-A2 are set LOW for an addeess of 0x48 10 | * DS1307 wired per data sheet. This ex assumes A0-A2 are set LOW for an addeess of 0x68 11 | * PCA8574A GPIO was used wired per instructions in "info" folder in the LiquidCrystal_I2C lib. 12 | * This ex assumes A0-A2 are set HIGH for an addeess of 0x3F 13 | * LiquidCrystal_I2C lib was modified for ATtiny - on Playground with TinyWireM lib. 14 | * TinyWireM USAGE & CREDITS: - see TinyWireM.h 15 | */ 16 | 17 | //#define DEBUG 18 | #include // I2C Master lib for ATTinys which use USI 19 | #include // for LCD w/ GPIO MODIFIED for the ATtiny85 20 | 21 | #define GPIO_ADDR 0x3F // (PCA8574A A0-A2 @5V) typ. A0-A3 Gnd 0x20 / 0x38 for A 22 | #define DS1307_ADDR 0x68 // I2C real time clock 23 | #define DS1621_ADDR 0x48 // 7 bit I2C address for DS1621 temperature sensor 24 | #define LED1_PIN 4 // ATtiny Pin 3 25 | #define LED2_PIN 1 // ATtiny Pin 6 26 | //#define HR24 true 27 | 28 | int tempC = 0; // holds temp in C 29 | int tempF = 0; // holds temp in F 30 | byte seconds,minutes,hours,day_of_week,days,months,years,PM,hour12,DST; 31 | char timeString[10]; // HH:MM 12 Hr. no AM/PM or 24 Hr (based on param) 32 | char dateString[10]; // MM/DD or DD/MM (based on param)- no year 33 | bool HR24; // 12/24 Hr Time and date 34 | 35 | LiquidCrystal_I2C lcd(GPIO_ADDR,16,2); // set address & 16 chars / 2 lines 36 | 37 | 38 | void setup(){ 39 | #ifdef DEBUG 40 | pinMode(LED1_PIN,OUTPUT); 41 | pinMode(LED2_PIN,OUTPUT); 42 | Blink(LED1_PIN,3); // show it's alive 43 | #endif 44 | TinyWireM.begin(); // initialize I2C lib 45 | Init_Temp(); // Setup DS1621 46 | lcd.init(); // initialize the lcd 47 | lcd.backlight(); // Print a message to the LCD. 48 | lcd.print("Hello, Temp!"); 49 | delay (2000); 50 | } 51 | 52 | 53 | void loop(){ 54 | Get_Temp(); // read current temperature 55 | Get_Time(); // read current time 56 | lcd.clear(); // display it 57 | lcd.print("C"); 58 | lcd.print((char)223); 59 | lcd.print(": "); 60 | lcd.print(tempC,DEC); 61 | lcd.setCursor(9,0); 62 | lcd.print("F"); 63 | lcd.print((char)223); 64 | lcd.print(": "); 65 | lcd.print(tempF,DEC); 66 | lcd.setCursor(0,1); 67 | lcd.print(timeString); 68 | lcd.setCursor(9,1); 69 | lcd.print(dateString); 70 | #ifdef DEBUG 71 | Blink(LED1_PIN,tempC/10); // blink 10's of temperature on LED 1 72 | delay (1000); 73 | Blink(LED2_PIN,tempC%10); // blink 1's of temperature on LED 2 74 | #endif 75 | HR24 = ! HR24; // flip the format 76 | delay (4000); // wait a few sec before next reading 77 | } 78 | 79 | 80 | void Init_Temp(){ // Setup the DS1621 for one-shot mode 81 | TinyWireM.beginTransmission(DS1621_ADDR); 82 | TinyWireM.send(0xAC); // Access Command Register 83 | TinyWireM.send(B00000001); // Using one-shot mode for battery savings 84 | //TinyWireM.send(B00000000); // if setting continious mode for fast reads 85 | TinyWireM.endTransmission(); // Send to the slave 86 | } 87 | 88 | 89 | void Get_Temp(){ // Get the temperature from a DS1621 90 | TinyWireM.beginTransmission(DS1621_ADDR); 91 | TinyWireM.send(0xEE); // if one-shot, start conversions now 92 | TinyWireM.endTransmission(); // Send 1 byte to the slave 93 | delay(750); // if one-shot, must wait ~750 ms for conversion 94 | TinyWireM.beginTransmission(DS1621_ADDR); 95 | TinyWireM.send(0xAA); // read temperature (for either mode) 96 | TinyWireM.endTransmission(); // Send 1 byte to the slave 97 | TinyWireM.requestFrom(DS1621_ADDR,1); // Request 1 byte from slave 98 | tempC = TinyWireM.receive(); // get the temperature 99 | tempF = tempC * 9 / 5 + 32; // convert to Fahrenheit 100 | } 101 | 102 | 103 | void Get_Time(){ // get the time and date from the DS1307 chip 104 | byte wireRet = 0; 105 | memset(timeString,0,sizeof(timeString)); // initialize the strings 106 | memset(dateString,0,sizeof(dateString)); 107 | 108 | TinyWireM.beginTransmission(DS1307_ADDR); // reset DS1307 register pointer 109 | TinyWireM.send(0); 110 | wireRet = TinyWireM.endTransmission(); 111 | if (wireRet) { // report any send esrrors 112 | lcd.clear(); 113 | lcd.print("SendError: "); 114 | lcd.print(wireRet,DEC); 115 | delay(1500); 116 | } 117 | wireRet = TinyWireM.requestFrom(DS1307_ADDR, 7); // request 7 bytes from DS1307 118 | if (wireRet) { // report any receive esrrors 119 | lcd.clear(); 120 | lcd.print("RcveError: "); 121 | lcd.print(wireRet,DEC); 122 | delay(1500); 123 | } 124 | #ifdef DEBUG 125 | lcd.clear(); 126 | lcd.print("Before Reads: "); 127 | lcd.print(TinyWireM.available(),DEC); // testing TinyWireM.available() 128 | delay(1500); 129 | #endif 130 | seconds = bcdToDec(TinyWireM.receive()); // handle the 7 bytes received 131 | minutes = bcdToDec(TinyWireM.receive()); 132 | hours = bcdToDec(TinyWireM.receive()); 133 | day_of_week = TinyWireM.receive(); 134 | days = bcdToDec(TinyWireM.receive()); 135 | months = bcdToDec(TinyWireM.receive()); 136 | years = bcdToDec(TinyWireM.receive()); 137 | #ifdef DEBUG 138 | lcd.clear(); 139 | lcd.print("After Reads: "); 140 | lcd.print(TinyWireM.available(),DEC); // testing TinyWireM.available() 141 | delay(1500); 142 | #endif 143 | // deal with AM/PM global and 12 hour clock 144 | if (hours >= 12) PM = true; 145 | else PM = false; 146 | if (hours > 12)hour12 = hours - 12; 147 | else hour12 = hours; 148 | if (hours == 0) hour12 = 12; 149 | 150 | // make time string 151 | if (HR24) AppendToString (hours,timeString); // add 24 hour time to string 152 | else AppendToString (hour12,timeString); // add 12 hour time to string 153 | strcat(timeString,":"); 154 | if (minutes < 10) strcat(timeString,"0"); 155 | AppendToString (minutes,timeString); // add MINUTES to string 156 | if (!HR24){ 157 | if (hours >= 12) strcat(timeString," PM"); // deal with AM/PM 158 | else strcat(timeString," AM"); 159 | } 160 | // make date string 161 | if (HR24)AppendToString (days,dateString); // add DAY to string 162 | else AppendToString (months,dateString); // add MONTH to string 163 | strcat(dateString,"/"); 164 | if (HR24)AppendToString (months,dateString); // add MONTH to string 165 | else AppendToString (days,dateString); // add DAY to string 166 | strcat(dateString,"/"); 167 | if (years < 10) strcat(dateString,"0"); 168 | AppendToString (years,dateString); // add YEAR to string 169 | } 170 | 171 | 172 | void AppendToString (byte bValue, char *pString){ // appends a byte to string passed 173 | char tempStr[6]; 174 | memset(tempStr,'\0',sizeof(tempStr)); 175 | itoa(bValue,tempStr,10); 176 | strcat(pString,tempStr); 177 | } 178 | 179 | 180 | byte bcdToDec(byte val) { // Convert binary coded decimal to normal decimal numbers 181 | return ((val / 16 * 10) + (val % 16)); 182 | } 183 | 184 | 185 | #ifdef DEBUG 186 | void Blink(byte led, byte times){ // poor man's GUI 187 | for (byte i=0; i< times; i++){ 188 | digitalWrite(led,HIGH); 189 | delay (400); 190 | digitalWrite(led,LOW); 191 | delay (175); 192 | } 193 | } 194 | #endif 195 | 196 | 197 | 198 | 199 | 200 | -------------------------------------------------------------------------------- /LiquidCrystal_I2C/LiquidCrystal_I2C.cpp: -------------------------------------------------------------------------------- 1 | // LiquidCrystal_I2C V2.0 2 | 3 | #include "LiquidCrystal_I2C.h" 4 | #include 5 | #if defined(__AVR_ATtiny85__) || (__AVR_ATtiny2313__) 6 | #include "TinyWireM.h" // include this if ATtiny85 or ATtiny2313 7 | #else 8 | #include // original lib include 9 | #endif 10 | #include "Arduino.h" 11 | 12 | 13 | // When the display powers up, it is configured as follows: 14 | // 15 | // 1. Display clear 16 | // 2. Function set: 17 | // DL = 1; 8-bit interface data 18 | // N = 0; 1-line display 19 | // F = 0; 5x8 dot character font 20 | // 3. Display on/off control: 21 | // D = 0; Display off 22 | // C = 0; Cursor off 23 | // B = 0; Blinking off 24 | // 4. Entry mode set: 25 | // I/D = 1; Increment by 1 26 | // S = 0; No shift 27 | // 28 | // Note, however, that resetting the Arduino doesn't reset the LCD, so we 29 | // can't assume that its in that state when a sketch starts (and the 30 | // LiquidCrystal constructor is called). 31 | 32 | LiquidCrystal_I2C::LiquidCrystal_I2C(uint8_t lcd_addr, uint8_t lcd_cols, uint8_t lcd_rows, uint8_t charsize) 33 | { 34 | _addr = lcd_addr; 35 | _cols = lcd_cols; 36 | _rows = lcd_rows; 37 | _charsize = charsize; 38 | _backlightval = LCD_BACKLIGHT; 39 | } 40 | 41 | void LiquidCrystal_I2C::init(){ 42 | init_priv(); 43 | } 44 | 45 | void LiquidCrystal_I2C::init_priv() 46 | { 47 | #if defined (__AVR_ATtiny85__) || (__AVR_ATtiny2313__) 48 | TinyWireM.begin(); // initialize I2C lib 49 | #else // original call 50 | Wire.begin(); 51 | #endif 52 | _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS; 53 | LiquidCrystal_I2C::begin(_cols, _rows); 54 | } 55 | 56 | void LiquidCrystal_I2C::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) { 57 | if (_rows > 1) { 58 | _displayfunction |= LCD_2LINE; 59 | } 60 | 61 | // for some 1 line displays you can select a 10 pixel high font 62 | if ((_charsize != 0) && (_rows == 1)) { 63 | _displayfunction |= LCD_5x10DOTS; 64 | } 65 | 66 | // SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION! 67 | // according to datasheet, we need at least 40ms after power rises above 2.7V 68 | // before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50 69 | delay(50); 70 | 71 | // Now we pull both RS and R/W low to begin commands 72 | expanderWrite(_backlightval); // reset expanderand turn backlight off (Bit 8 =1) 73 | delay(1000); 74 | 75 | //put the LCD into 4 bit mode 76 | // this is according to the hitachi HD44780 datasheet 77 | // figure 24, pg 46 78 | 79 | // we start in 8bit mode, try to set 4 bit mode 80 | write4bits(0x03 << 4); 81 | delayMicroseconds(4500); // wait min 4.1ms 82 | 83 | // second try 84 | write4bits(0x03 << 4); 85 | delayMicroseconds(4500); // wait min 4.1ms 86 | 87 | // third go! 88 | write4bits(0x03 << 4); 89 | delayMicroseconds(150); 90 | 91 | // finally, set to 4-bit interface 92 | write4bits(0x02 << 4); 93 | 94 | // set # lines, font size, etc. 95 | command(LCD_FUNCTIONSET | _displayfunction); 96 | 97 | // turn the display on with no cursor or blinking default 98 | _displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF; 99 | display(); 100 | 101 | // clear it off 102 | clear(); 103 | 104 | // Initialize to default text direction (for roman languages) 105 | _displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT; 106 | 107 | // set the entry mode 108 | command(LCD_ENTRYMODESET | _displaymode); 109 | 110 | home(); 111 | } 112 | 113 | /********** high level commands, for the user! */ 114 | void LiquidCrystal_I2C::clear(){ 115 | command(LCD_CLEARDISPLAY);// clear display, set cursor position to zero 116 | delayMicroseconds(2000); // this command takes a long time! 117 | } 118 | 119 | void LiquidCrystal_I2C::home(){ 120 | command(LCD_RETURNHOME); // set cursor position to zero 121 | delayMicroseconds(2000); // this command takes a long time! 122 | } 123 | 124 | void LiquidCrystal_I2C::setCursor(uint8_t col, uint8_t row){ 125 | int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 }; 126 | if (row > _rows) { 127 | row = _rows-1; // we count rows starting w/0 128 | } 129 | command(LCD_SETDDRAMADDR | (col + row_offsets[row])); 130 | } 131 | 132 | // Turn the display on/off (quickly) 133 | void LiquidCrystal_I2C::noDisplay() { 134 | _displaycontrol &= ~LCD_DISPLAYON; 135 | command(LCD_DISPLAYCONTROL | _displaycontrol); 136 | } 137 | void LiquidCrystal_I2C::display() { 138 | _displaycontrol |= LCD_DISPLAYON; 139 | command(LCD_DISPLAYCONTROL | _displaycontrol); 140 | } 141 | 142 | // Turns the underline cursor on/off 143 | void LiquidCrystal_I2C::noCursor() { 144 | _displaycontrol &= ~LCD_CURSORON; 145 | command(LCD_DISPLAYCONTROL | _displaycontrol); 146 | } 147 | void LiquidCrystal_I2C::cursor() { 148 | _displaycontrol |= LCD_CURSORON; 149 | command(LCD_DISPLAYCONTROL | _displaycontrol); 150 | } 151 | 152 | // Turn on and off the blinking cursor 153 | void LiquidCrystal_I2C::noBlink() { 154 | _displaycontrol &= ~LCD_BLINKON; 155 | command(LCD_DISPLAYCONTROL | _displaycontrol); 156 | } 157 | void LiquidCrystal_I2C::blink() { 158 | _displaycontrol |= LCD_BLINKON; 159 | command(LCD_DISPLAYCONTROL | _displaycontrol); 160 | } 161 | 162 | // These commands scroll the display without changing the RAM 163 | void LiquidCrystal_I2C::scrollDisplayLeft(void) { 164 | command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT); 165 | } 166 | void LiquidCrystal_I2C::scrollDisplayRight(void) { 167 | command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT); 168 | } 169 | 170 | // This is for text that flows Left to Right 171 | void LiquidCrystal_I2C::leftToRight(void) { 172 | _displaymode |= LCD_ENTRYLEFT; 173 | command(LCD_ENTRYMODESET | _displaymode); 174 | } 175 | 176 | // This is for text that flows Right to Left 177 | void LiquidCrystal_I2C::rightToLeft(void) { 178 | _displaymode &= ~LCD_ENTRYLEFT; 179 | command(LCD_ENTRYMODESET | _displaymode); 180 | } 181 | 182 | // This will 'right justify' text from the cursor 183 | void LiquidCrystal_I2C::autoscroll(void) { 184 | _displaymode |= LCD_ENTRYSHIFTINCREMENT; 185 | command(LCD_ENTRYMODESET | _displaymode); 186 | } 187 | 188 | // This will 'left justify' text from the cursor 189 | void LiquidCrystal_I2C::noAutoscroll(void) { 190 | _displaymode &= ~LCD_ENTRYSHIFTINCREMENT; 191 | command(LCD_ENTRYMODESET | _displaymode); 192 | } 193 | 194 | // Allows us to fill the first 8 CGRAM locations 195 | // with custom characters 196 | void LiquidCrystal_I2C::createChar(uint8_t location, uint8_t charmap[]) { 197 | location &= 0x7; // we only have 8 locations 0-7 198 | command(LCD_SETCGRAMADDR | (location << 3)); 199 | for (int i=0; i<8; i++) { 200 | write(charmap[i]); 201 | } 202 | } 203 | 204 | // Turn the (optional) backlight off/on 205 | void LiquidCrystal_I2C::noBacklight(void) { 206 | _backlightval=LCD_NOBACKLIGHT; 207 | expanderWrite(0); 208 | } 209 | 210 | void LiquidCrystal_I2C::backlight(void) { 211 | _backlightval=LCD_BACKLIGHT; 212 | expanderWrite(0); 213 | } 214 | 215 | /*********** mid level commands, for sending data/cmds */ 216 | 217 | inline void LiquidCrystal_I2C::command(uint8_t value) { 218 | send(value, 0); 219 | } 220 | 221 | inline size_t LiquidCrystal_I2C::write(uint8_t value) { 222 | send(value, Rs); 223 | return 1; 224 | } 225 | 226 | 227 | /************ low level data pushing commands **********/ 228 | 229 | // write either command or data 230 | void LiquidCrystal_I2C::send(uint8_t value, uint8_t mode) { 231 | uint8_t highnib=value&0xf0; 232 | uint8_t lownib=(value<<4)&0xf0; 233 | write4bits((highnib)|mode); 234 | write4bits((lownib)|mode); 235 | } 236 | 237 | void LiquidCrystal_I2C::write4bits(uint8_t value) { 238 | expanderWrite(value); 239 | pulseEnable(value); 240 | } 241 | 242 | void LiquidCrystal_I2C::expanderWrite(uint8_t _data){ 243 | #if defined(__AVR_ATtiny85__) || (__AVR_ATtiny2313__) // Replaced Wire calls with ATtiny TWI calls 244 | TinyWireM.beginTransmission(_addr); 245 | TinyWireM.send(((int)(_data) | _backlightval)); 246 | TinyWireM.endTransmission(); 247 | #else // original lib function 248 | Wire.beginTransmission(_addr); 249 | Wire.write((int)(_data) | _backlightval); 250 | Wire.endTransmission(); 251 | #endif 252 | } 253 | 254 | void LiquidCrystal_I2C::pulseEnable(uint8_t _data){ 255 | expanderWrite(_data | En); // En high 256 | delayMicroseconds(1); // enable pulse must be >450ns 257 | 258 | expanderWrite(_data & ~En); // En low 259 | delayMicroseconds(50); // commands need > 37us to settle 260 | } 261 | 262 | void LiquidCrystal_I2C::load_custom_character(uint8_t char_num, uint8_t *rows){ 263 | createChar(char_num, rows); 264 | } 265 | 266 | void LiquidCrystal_I2C::setBacklight(uint8_t new_val){ 267 | if (new_val) { 268 | backlight(); // turn backlight on 269 | } else { 270 | noBacklight(); // turn backlight off 271 | } 272 | } 273 | 274 | void LiquidCrystal_I2C::printstr(const char c[]){ 275 | //This function is not identical to the function used for "real" I2C displays 276 | //it's here so the user sketch doesn't have to be changed 277 | print(c); 278 | } 279 | 280 | 281 | // unsupported API functions 282 | void LiquidCrystal_I2C::off(){} 283 | void LiquidCrystal_I2C::on(){} 284 | void LiquidCrystal_I2C::setDelay (int cmdDelay,int charDelay) {} 285 | uint8_t LiquidCrystal_I2C::status(){return 0;} 286 | uint8_t LiquidCrystal_I2C::keypad (){return 0;} 287 | uint8_t LiquidCrystal_I2C::init_bargraph(uint8_t graphtype){return 0;} 288 | void LiquidCrystal_I2C::draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end){} 289 | void LiquidCrystal_I2C::draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_row_end){} 290 | void LiquidCrystal_I2C::setContrast(uint8_t new_val){} 291 | 292 | -------------------------------------------------------------------------------- /TinyWireM/USI_TWI_Master.cpp: -------------------------------------------------------------------------------- 1 | /***************************************************************************** 2 | * 3 | * 4 | * File USI_TWI_Master.c compiled with gcc 5 | * Date Friday, 10/31/08 Boo! 6 | * Updated by jkl 7 | * 8 | 9 | * AppNote : AVR310 - Using the USI module as a TWI Master 10 | * 11 | * Extensively modified to provide complete I2C driver. 12 | * 13 | *Notes: 14 | * - T4_TWI and T2_TWI delays are modified to work with 1MHz default clock 15 | * and now use hard code values. They would need to change 16 | * for other clock rates. Refer to the Apps Note. 17 | * 18 | * 12/17/08 Added USI_TWI_Start_Memory_Read Routine -jkl 19 | * Note msg buffer will have slave adrs ( with write bit set) and memory adrs; 20 | * length should be these two bytes plus the number of bytes to read. 21 | ****************************************************************************/ 22 | #include 23 | #define F_CPU 1000000UL // Sets up the default speed for delay.h 24 | #include 25 | #include 26 | #include "USI_TWI_Master.h" 27 | 28 | unsigned char USI_TWI_Start_Transceiver_With_Data( unsigned char * , unsigned char ); 29 | unsigned char USI_TWI_Master_Transfer( unsigned char ); 30 | unsigned char USI_TWI_Master_Stop( void ); 31 | unsigned char USI_TWI_Master_Start( void ); 32 | 33 | union USI_TWI_state 34 | { 35 | unsigned char errorState; // Can reuse the TWI_state for error states since it will not be needed if there is an error. 36 | struct 37 | { 38 | unsigned char addressMode : 1; 39 | unsigned char masterWriteDataMode : 1; 40 | unsigned char memReadMode : 1; 41 | unsigned char unused : 5; 42 | }; 43 | } USI_TWI_state; 44 | 45 | /*--------------------------------------------------------------- 46 | USI TWI single master initialization function 47 | ---------------------------------------------------------------*/ 48 | void USI_TWI_Master_Initialise( void ) 49 | { 50 | PORT_USI |= (1< (unsigned char*)RAMEND) // Test if address is outside SRAM space 146 | { 147 | USI_TWI_state.errorState = USI_TWI_DATA_OUT_OF_BOUND; 148 | return (FALSE); 149 | } 150 | if(msgSize <= 1) // Test if the transmission buffer is empty 151 | { 152 | USI_TWI_state.errorState = USI_TWI_NO_DATA; 153 | return (FALSE); 154 | } 155 | #endif 156 | 157 | #ifdef NOISE_TESTING // Test if any unexpected conditions have arrived prior to this execution. 158 | if( USISR & (1< 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------