diff --git a/libraries/Adafruit_LiquidCrystal/Adafruit_LiquidCrystal.cpp b/libraries/Adafruit_LiquidCrystal/Adafruit_LiquidCrystal.cpp new file mode 100644 index 0000000..b8fbfb7 --- /dev/null +++ b/libraries/Adafruit_LiquidCrystal/Adafruit_LiquidCrystal.cpp @@ -0,0 +1,453 @@ +#include "Arduino.h" +#include "Adafruit_LiquidCrystal.h" +#include +#include +#include + +// FOR Arduino Due +#if !defined(_BV) +# define _BV(bit) (1 << (bit)) +#endif + + +// When the display powers up, it is configured as follows: +// +// 1. Display clear +// 2. Function set: +// DL = 1; 8-bit interface data +// N = 0; 1-line display +// F = 0; 5x8 dot character font +// 3. Display on/off control: +// D = 0; Display off +// C = 0; Cursor off +// B = 0; Blinking off +// 4. Entry mode set: +// I/D = 1; Increment by 1 +// S = 0; No shift +// +// Note, however, that resetting the Arduino doesn't reset the LCD, so we +// can't assume that its in that state when a sketch starts (and the +// Adafruit_LiquidCrystal constructor is called). + +Adafruit_LiquidCrystal::Adafruit_LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, + uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7) +{ + init(0, rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7); +} + +Adafruit_LiquidCrystal::Adafruit_LiquidCrystal(uint8_t rs, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, + uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7) +{ + init(0, rs, 255, enable, d0, d1, d2, d3, d4, d5, d6, d7); +} + +Adafruit_LiquidCrystal::Adafruit_LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3) +{ + init(1, rs, rw, enable, d0, d1, d2, d3, 0, 0, 0, 0); +} + +Adafruit_LiquidCrystal::Adafruit_LiquidCrystal(uint8_t rs, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3) +{ + init(1, rs, 255, enable, d0, d1, d2, d3, 0, 0, 0, 0); +} + +Adafruit_LiquidCrystal::Adafruit_LiquidCrystal(uint8_t i2caddr) { + _i2cAddr = i2caddr; + + _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS; + + // the I/O expander pinout + _rs_pin = 1; + _rw_pin = 255; + _enable_pin = 2; + _data_pins[0] = 3; // really d4 + _data_pins[1] = 4; // really d5 + _data_pins[2] = 5; // really d6 + _data_pins[3] = 6; // really d7 + + // we can't begin() yet :( +} + + +Adafruit_LiquidCrystal::Adafruit_LiquidCrystal(uint8_t data, uint8_t clock, uint8_t latch ) { + _i2cAddr = 255; + + _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS; + + // the SPI expander pinout + _rs_pin = 1; + _rw_pin = 255; + _enable_pin = 2; + _data_pins[0] = 6; // really d4 + _data_pins[1] = 5; // really d5 + _data_pins[2] = 4; // really d6 + _data_pins[3] = 3; // really d7 + + _SPIdata = data; + _SPIclock = clock; + _SPIlatch = latch; + + _SPIbuff = 0; + + // we can't begin() yet :( +} + + +void Adafruit_LiquidCrystal::init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, + uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7) +{ + _rs_pin = rs; + _rw_pin = rw; + _enable_pin = enable; + + _data_pins[0] = d0; + _data_pins[1] = d1; + _data_pins[2] = d2; + _data_pins[3] = d3; + _data_pins[4] = d4; + _data_pins[5] = d5; + _data_pins[6] = d6; + _data_pins[7] = d7; + + _i2cAddr = 255; + _SPIclock = _SPIdata = _SPIlatch = 255; + + if (fourbitmode) + _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS; + else + _displayfunction = LCD_8BITMODE | LCD_1LINE | LCD_5x8DOTS; +} + +void Adafruit_LiquidCrystal::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) { + // check if i2c + if (_i2cAddr != 255) { + _i2c.begin(_i2cAddr); + + _i2c.pinMode(7, OUTPUT); // backlight + _i2c.digitalWrite(7, HIGH); // backlight + + for (uint8_t i=0; i<4; i++) + _pinMode(_data_pins[i], OUTPUT); + + _i2c.pinMode(_rs_pin, OUTPUT); + _i2c.pinMode(_enable_pin, OUTPUT); + } else if (_SPIclock != 255) { + pinMode(_SPIdata, OUTPUT); + pinMode(_SPIclock, OUTPUT); + pinMode(_SPIlatch, OUTPUT); + _SPIbuff = 0x80; // backlight + } else { + pinMode(_rs_pin, OUTPUT); + // we can save 1 pin by not using RW. Indicate by passing 255 instead of pin# + if (_rw_pin != 255) { + pinMode(_rw_pin, OUTPUT); + } + pinMode(_enable_pin, OUTPUT); + + } + + + + if (lines > 1) { + _displayfunction |= LCD_2LINE; + } + _numlines = lines; + _currline = 0; + + // for some 1 line displays you can select a 10 pixel high font + if ((dotsize != 0) && (lines == 1)) { + _displayfunction |= LCD_5x10DOTS; + } + + // SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION! + // according to datasheet, we need at least 40ms after power rises above 2.7V + // before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50 + delayMicroseconds(50000); + // Now we pull both RS and R/W low to begin commands + _digitalWrite(_rs_pin, LOW); + _digitalWrite(_enable_pin, LOW); + if (_rw_pin != 255) { + _digitalWrite(_rw_pin, LOW); + } + + //put the LCD into 4 bit or 8 bit mode + if (! (_displayfunction & LCD_8BITMODE)) { + // this is according to the hitachi HD44780 datasheet + // figure 24, pg 46 + + // we start in 8bit mode, try to set 4 bit mode + write4bits(0x03); + delayMicroseconds(4500); // wait min 4.1ms + + // second try + write4bits(0x03); + delayMicroseconds(4500); // wait min 4.1ms + + // third go! + write4bits(0x03); + delayMicroseconds(150); + + // finally, set to 8-bit interface + write4bits(0x02); + } else { + // this is according to the hitachi HD44780 datasheet + // page 45 figure 23 + + // Send function set command sequence + command(LCD_FUNCTIONSET | _displayfunction); + delayMicroseconds(4500); // wait more than 4.1ms + + // second try + command(LCD_FUNCTIONSET | _displayfunction); + delayMicroseconds(150); + + // third go + command(LCD_FUNCTIONSET | _displayfunction); + } + + // finally, set # lines, font size, etc. + command(LCD_FUNCTIONSET | _displayfunction); + + // turn the display on with no cursor or blinking default + _displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF; + display(); + + // clear it off + clear(); + + // Initialize to default text direction (for romance languages) + _displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT; + // set the entry mode + command(LCD_ENTRYMODESET | _displaymode); + +} + +/********** high level commands, for the user! */ +void Adafruit_LiquidCrystal::clear() +{ + command(LCD_CLEARDISPLAY); // clear display, set cursor position to zero + delayMicroseconds(2000); // this command takes a long time! +} + +void Adafruit_LiquidCrystal::home() +{ + command(LCD_RETURNHOME); // set cursor position to zero + delayMicroseconds(2000); // this command takes a long time! +} + +void Adafruit_LiquidCrystal::setCursor(uint8_t col, uint8_t row) +{ + int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 }; + if ( row > _numlines ) { + row = _numlines-1; // we count rows starting w/0 + } + + command(LCD_SETDDRAMADDR | (col + row_offsets[row])); +} + +// Turn the display on/off (quickly) +void Adafruit_LiquidCrystal::noDisplay() { + _displaycontrol &= ~LCD_DISPLAYON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} +void Adafruit_LiquidCrystal::display() { + _displaycontrol |= LCD_DISPLAYON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} + +// Turns the underline cursor on/off +void Adafruit_LiquidCrystal::noCursor() { + _displaycontrol &= ~LCD_CURSORON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} +void Adafruit_LiquidCrystal::cursor() { + _displaycontrol |= LCD_CURSORON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} + +// Turn on and off the blinking cursor +void Adafruit_LiquidCrystal::noBlink() { + _displaycontrol &= ~LCD_BLINKON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} +void Adafruit_LiquidCrystal::blink() { + _displaycontrol |= LCD_BLINKON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} + +// These commands scroll the display without changing the RAM +void Adafruit_LiquidCrystal::scrollDisplayLeft(void) { + command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT); +} +void Adafruit_LiquidCrystal::scrollDisplayRight(void) { + command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT); +} + +// This is for text that flows Left to Right +void Adafruit_LiquidCrystal::leftToRight(void) { + _displaymode |= LCD_ENTRYLEFT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// This is for text that flows Right to Left +void Adafruit_LiquidCrystal::rightToLeft(void) { + _displaymode &= ~LCD_ENTRYLEFT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// This will 'right justify' text from the cursor +void Adafruit_LiquidCrystal::autoscroll(void) { + _displaymode |= LCD_ENTRYSHIFTINCREMENT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// This will 'left justify' text from the cursor +void Adafruit_LiquidCrystal::noAutoscroll(void) { + _displaymode &= ~LCD_ENTRYSHIFTINCREMENT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// Allows us to fill the first 8 CGRAM locations +// with custom characters +void Adafruit_LiquidCrystal::createChar(uint8_t location, uint8_t charmap[]) { + location &= 0x7; // we only have 8 locations 0-7 + command(LCD_SETCGRAMADDR | (location << 3)); + for (int i=0; i<8; i++) { + write(charmap[i]); + } +} + +/*********** mid level commands, for sending data/cmds */ + +inline void Adafruit_LiquidCrystal::command(uint8_t value) { + send(value, LOW); +} + +#if ARDUINO >= 100 +inline size_t Adafruit_LiquidCrystal::write(uint8_t value) { + send(value, HIGH); + return 1; +} +#else +inline void Adafruit_LiquidCrystal::write(uint8_t value) { + send(value, HIGH); +} +#endif + +/************ low level data pushing commands **********/ + +// little wrapper for i/o writes +void Adafruit_LiquidCrystal::_digitalWrite(uint8_t p, uint8_t d) { + if (_i2cAddr != 255) { + // an i2c command + _i2c.digitalWrite(p, d); + } else if (_SPIclock != 255) { + if (d == HIGH) + _SPIbuff |= (1 << p); + else + _SPIbuff &= ~(1 << p); + + digitalWrite(_SPIlatch, LOW); + shiftOut(_SPIdata, _SPIclock, MSBFIRST,_SPIbuff); + digitalWrite(_SPIlatch, HIGH); + } else { + // straightup IO + digitalWrite(p, d); + } +} + +// Allows to set the backlight, if the LCD backpack is used +void Adafruit_LiquidCrystal::setBacklight(uint8_t status) { + // check if i2c or SPI + if ((_i2cAddr != 255) || (_SPIclock != 255)) { + _digitalWrite(7, status); // backlight is on pin 7 + } +} + +// little wrapper for i/o directions +void Adafruit_LiquidCrystal::_pinMode(uint8_t p, uint8_t d) { + if (_i2cAddr != 255) { + // an i2c command + _i2c.pinMode(p, d); + } else if (_SPIclock != 255) { + // nothing! + } else { + // straightup IO + pinMode(p, d); + } +} + +// write either command or data, with automatic 4/8-bit selection +void Adafruit_LiquidCrystal::send(uint8_t value, boolean mode) { + _digitalWrite(_rs_pin, mode); + + // if there is a RW pin indicated, set it low to Write + if (_rw_pin != 255) { + _digitalWrite(_rw_pin, LOW); + } + + if (_displayfunction & LCD_8BITMODE) { + write8bits(value); + } else { + write4bits(value>>4); + write4bits(value); + } +} + +void Adafruit_LiquidCrystal::pulseEnable(void) { + _digitalWrite(_enable_pin, LOW); + delayMicroseconds(1); + _digitalWrite(_enable_pin, HIGH); + delayMicroseconds(1); // enable pulse must be >450ns + _digitalWrite(_enable_pin, LOW); + delayMicroseconds(100); // commands need > 37us to settle +} + +void Adafruit_LiquidCrystal::write4bits(uint8_t value) { + if (_i2cAddr != 255) { + uint8_t out = 0; + + out = _i2c.readGPIO(); + + + // speed up for i2c since its sluggish + for (int i = 0; i < 4; i++) { + out &= ~_BV(_data_pins[i]); + out |= ((value >> i) & 0x1) << _data_pins[i]; + } + + // make sure enable is low + out &= ~ _BV(_enable_pin); + + _i2c.writeGPIO(out); + + // pulse enable + delayMicroseconds(1); + out |= _BV(_enable_pin); + _i2c.writeGPIO(out); + delayMicroseconds(1); + out &= ~_BV(_enable_pin); + _i2c.writeGPIO(out); + delayMicroseconds(100); + } else { + for (int i = 0; i < 4; i++) { + _pinMode(_data_pins[i], OUTPUT); + _digitalWrite(_data_pins[i], (value >> i) & 0x01); + } + pulseEnable(); + } +} + +void Adafruit_LiquidCrystal::write8bits(uint8_t value) { + for (int i = 0; i < 8; i++) { + _pinMode(_data_pins[i], OUTPUT); + _digitalWrite(_data_pins[i], (value >> i) & 0x01); + } + + pulseEnable(); +} diff --git a/libraries/Adafruit_LiquidCrystal/Adafruit_LiquidCrystal.h b/libraries/Adafruit_LiquidCrystal/Adafruit_LiquidCrystal.h new file mode 100644 index 0000000..3ed6f33 --- /dev/null +++ b/libraries/Adafruit_LiquidCrystal/Adafruit_LiquidCrystal.h @@ -0,0 +1,124 @@ +#ifndef Adafruit_LiquidCrystal_h +#define Adafruit_LiquidCrystal_h + +#include "Arduino.h" +#include +#include "Print.h" +#include "utility/Adafruit_MCP23008.h" + +// commands +#define LCD_CLEARDISPLAY 0x01 +#define LCD_RETURNHOME 0x02 +#define LCD_ENTRYMODESET 0x04 +#define LCD_DISPLAYCONTROL 0x08 +#define LCD_CURSORSHIFT 0x10 +#define LCD_FUNCTIONSET 0x20 +#define LCD_SETCGRAMADDR 0x40 +#define LCD_SETDDRAMADDR 0x80 + +// flags for display entry mode +#define LCD_ENTRYRIGHT 0x00 +#define LCD_ENTRYLEFT 0x02 +#define LCD_ENTRYSHIFTINCREMENT 0x01 +#define LCD_ENTRYSHIFTDECREMENT 0x00 + +// flags for display on/off control +#define LCD_DISPLAYON 0x04 +#define LCD_DISPLAYOFF 0x00 +#define LCD_CURSORON 0x02 +#define LCD_CURSOROFF 0x00 +#define LCD_BLINKON 0x01 +#define LCD_BLINKOFF 0x00 + +// flags for display/cursor shift +#define LCD_DISPLAYMOVE 0x08 +#define LCD_CURSORMOVE 0x00 +#define LCD_MOVERIGHT 0x04 +#define LCD_MOVELEFT 0x00 + +// flags for function set +#define LCD_8BITMODE 0x10 +#define LCD_4BITMODE 0x00 +#define LCD_2LINE 0x08 +#define LCD_1LINE 0x00 +#define LCD_5x10DOTS 0x04 +#define LCD_5x8DOTS 0x00 + +class Adafruit_LiquidCrystal : public Print { +public: + Adafruit_LiquidCrystal(uint8_t rs, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, + uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7); + Adafruit_LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, + uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7); + Adafruit_LiquidCrystal(uint8_t rs, uint8_t rw, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3); + Adafruit_LiquidCrystal(uint8_t rs, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3); + + Adafruit_LiquidCrystal(uint8_t i2cAddr); + Adafruit_LiquidCrystal(uint8_t data, uint8_t clock, uint8_t latch); + + void init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable, + uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, + uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7); + + void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS); + + void clear(); + void home(); + + void noDisplay(); + void display(); + void noBlink(); + void blink(); + void noCursor(); + void cursor(); + void scrollDisplayLeft(); + void scrollDisplayRight(); + void leftToRight(); + void rightToLeft(); + void autoscroll(); + void noAutoscroll(); + + // only if using backpack + void setBacklight(uint8_t status); + + void createChar(uint8_t, uint8_t[]); + void setCursor(uint8_t, uint8_t); +#if ARDUINO >= 100 + virtual size_t write(uint8_t); +#else + virtual void write(uint8_t); +#endif + void command(uint8_t); +private: + void send(uint8_t value, boolean mode); + void write4bits(uint8_t); + void write8bits(uint8_t); + void pulseEnable(); + void _digitalWrite(uint8_t, uint8_t); + void _pinMode(uint8_t, uint8_t); + + uint8_t _rs_pin; // LOW: command. HIGH: character. + uint8_t _rw_pin; // LOW: write to LCD. HIGH: read from LCD. + uint8_t _enable_pin; // activated by a HIGH pulse. + uint8_t _data_pins[8]; + + uint8_t _displayfunction; + uint8_t _displaycontrol; + uint8_t _displaymode; + + uint8_t _initialized; + + uint8_t _numlines,_currline; + + uint8_t _SPIclock, _SPIdata, _SPIlatch; + uint8_t _SPIbuff; + + uint8_t _i2cAddr; + Adafruit_MCP23008 _i2c; +}; + +#endif diff --git a/libraries/Adafruit_LiquidCrystal/README.md b/libraries/Adafruit_LiquidCrystal/README.md new file mode 100644 index 0000000..99584c2 --- /dev/null +++ b/libraries/Adafruit_LiquidCrystal/README.md @@ -0,0 +1,37 @@ +# Adafruit_LiquidCrystal + +This library has been renamed Adafruit_LiquidCrystal so as not to conflict with LiquidCrystal. Also, it now works with tiny85's if you have Adafruit AVR board pkg 1.4.3+ + + + +## Compatibility + +MCU | Tested Works | Doesn't Work | Not Tested | Notes +----------------- | :----------: | :----------: | :---------: | ----- +Atmega328 @ 16MHz | X | | | +Atmega328 @ 12MHz | X | | | For SPI, Pro Trinket has no pin 2, can move to pin 5. +Atmega32u4 @ 16MHz | X | | | +Atmega32u4 @ 8MHz | X | | | +ESP8266 | X | | | For SPI, ESP8266 has no pin 3, moved to pin 5. +Atmega2560 @ 16MHz | X | | | +ATSAM3X8E | X | | | +ATSAM21D | | X | | I2C works, use SDA and SCL pins. For SPI, LCD blinks once on start up. +ATtiny85 @ 16MHz | | X | | Use TinyLiquidCrystal libray instead: https://github.com/adafruit/TinyLiquidCrystal + +I2C uses SDA & SCL pins 0 & 2 +ATtiny85 @ 8MHz | | X | | Use TinyLiquidCrystal libray instead: https://github.com/adafruit/TinyLiquidCrystal + +I2C uses SDA & SCL pins 0 & 2 + + * ATmega328 @ 16MHz : Arduino UNO, Adafruit Pro Trinket 5V, Adafruit Metro 328, Adafruit Metro Mini + * ATmega328 @ 12MHz : Adafruit Pro Trinket 3V + * ATmega32u4 @ 16MHz : Arduino Leonardo, Arduino Micro, Arduino Yun, Teensy 2.0 + * ATmega32u4 @ 8MHz : Adafruit Flora, Bluefruit Micro + * ESP8266 : Adafruit Huzzah + * ATmega2560 @ 16MHz : Arduino Mega + * ATSAM3X8E : Arduino Due + * ATSAM21D : Arduino Zero, M0 Pro + * ATtiny85 @ 16MHz : Adafruit Trinket 5V + * ATtiny85 @ 8MHz : Adafruit Gemma, Arduino Gemma, Adafruit Trinket 3V + + diff --git a/libraries/Adafruit_LiquidCrystal/keywords.txt b/libraries/Adafruit_LiquidCrystal/keywords.txt new file mode 100644 index 0000000..6c67c51 --- /dev/null +++ b/libraries/Adafruit_LiquidCrystal/keywords.txt @@ -0,0 +1,38 @@ +####################################### +# Syntax Coloring Map For LiquidCrystal +####################################### + +####################################### +# Datatypes (KEYWORD1) +####################################### + +Adafruit_LiquidCrystal KEYWORD1 + +####################################### +# Methods and Functions (KEYWORD2) +####################################### + +begin KEYWORD2 +clear KEYWORD2 +home KEYWORD2 +print KEYWORD2 +setCursor KEYWORD2 +cursor KEYWORD2 +noCursor KEYWORD2 +blink KEYWORD2 +noBlink KEYWORD2 +display KEYWORD2 +noDisplay KEYWORD2 +autoscroll KEYWORD2 +noAutoscroll KEYWORD2 +leftToRight KEYWORD2 +rightToLeft KEYWORD2 +scrollDisplayLeft KEYWORD2 +scrollDisplayRight KEYWORD2 +createChar KEYWORD2 +setBacklight KEYWORD2 + +####################################### +# Constants (LITERAL1) +####################################### + diff --git a/libraries/Adafruit_LiquidCrystal/library.properties b/libraries/Adafruit_LiquidCrystal/library.properties new file mode 100644 index 0000000..071b6d5 --- /dev/null +++ b/libraries/Adafruit_LiquidCrystal/library.properties @@ -0,0 +1,9 @@ +name=Adafruit LiquidCrystal +version=1.0.0 +author=Adafruit +maintainer=Adafruit +sentence=Fork of LiquidCrystal HD44780-compatible LCD driver library, now with support for ATtiny85. +paragraph=Fork of LiquidCrystal HD44780-compatible LCD driver library, now with support for ATtiny85. +category=Display +url=https://github.com/adafruit/LiquidCrystal/ +architectures=* diff --git a/libraries/Adafruit_LiquidCrystal/utility/Adafruit_MCP23008.cpp b/libraries/Adafruit_LiquidCrystal/utility/Adafruit_MCP23008.cpp new file mode 100644 index 0000000..c85dfe4 --- /dev/null +++ b/libraries/Adafruit_LiquidCrystal/utility/Adafruit_MCP23008.cpp @@ -0,0 +1,175 @@ +/*************************************************** + This is a library for the MCP23008 i2c port expander + + These displays use I2C to communicate, 2 pins are required to + interface + Adafruit invests time and resources providing this open source code, + please support Adafruit and open-source hardware by purchasing + products from Adafruit! + + Written by Limor Fried/Ladyada for Adafruit Industries. + BSD license, all text above must be included in any redistribution + ****************************************************/ + +#if ARDUINO >= 100 + #include "Arduino.h" +#else + #include "WProgram.h" +#endif +#include +#include "Adafruit_MCP23008.h" + + +//////////////////////////////////////////////////////////////////////////////// +// RTC_DS1307 implementation + +void Adafruit_MCP23008::begin(uint8_t addr) { + addr &= 7; + + i2caddr = addr; + + Wire.begin(); + + // set defaults! + Wire.beginTransmission(MCP23008_ADDRESS | i2caddr); +#if ARDUINO >= 100 + Wire.write((byte)MCP23008_IODIR); + Wire.write((byte)0xFF); // all inputs + Wire.write((byte)0x00); + Wire.write((byte)0x00); + Wire.write((byte)0x00); + Wire.write((byte)0x00); + Wire.write((byte)0x00); + Wire.write((byte)0x00); + Wire.write((byte)0x00); + Wire.write((byte)0x00); + Wire.write((byte)0x00); +#else + Wire.send(MCP23008_IODIR); + Wire.send(0xFF); // all inputs + Wire.send(0x00); + Wire.send(0x00); + Wire.send(0x00); + Wire.send(0x00); + Wire.send(0x00); + Wire.send(0x00); + Wire.send(0x00); + Wire.send(0x00); + Wire.send(0x00); +#endif + Wire.endTransmission(); + +} + +void Adafruit_MCP23008::begin(void) { + begin(0); +} + +void Adafruit_MCP23008::pinMode(uint8_t p, uint8_t d) { + uint8_t iodir; + + + // only 8 bits! + if (p > 7) + return; + + iodir = read8(MCP23008_IODIR); + + // set the pin and direction + if (d == INPUT) { + iodir |= 1 << p; + } else { + iodir &= ~(1 << p); + } + + // write the new IODIR + write8(MCP23008_IODIR, iodir); +} + +uint8_t Adafruit_MCP23008::readGPIO(void) { + // read the current GPIO input + return read8(MCP23008_GPIO); +} + +void Adafruit_MCP23008::writeGPIO(uint8_t gpio) { + write8(MCP23008_GPIO, gpio); +} + + +void Adafruit_MCP23008::digitalWrite(uint8_t p, uint8_t d) { + uint8_t gpio; + + // only 8 bits! + if (p > 7) + return; + + // read the current GPIO output latches + gpio = readGPIO(); + + // set the pin and direction + if (d == HIGH) { + gpio |= 1 << p; + } else { + gpio &= ~(1 << p); + } + + // write the new GPIO + writeGPIO(gpio); +} + +void Adafruit_MCP23008::pullUp(uint8_t p, uint8_t d) { + uint8_t gppu; + + // only 8 bits! + if (p > 7) + return; + + gppu = read8(MCP23008_GPPU); + // set the pin and direction + if (d == HIGH) { + gppu |= 1 << p; + } else { + gppu &= ~(1 << p); + } + // write the new GPIO + write8(MCP23008_GPPU, gppu); +} + +uint8_t Adafruit_MCP23008::digitalRead(uint8_t p) { + // only 8 bits! + if (p > 7) + return 0; + + // read the current GPIO + return (readGPIO() >> p) & 0x1; +} + +uint8_t Adafruit_MCP23008::read8(uint8_t addr) { + Wire.beginTransmission(MCP23008_ADDRESS | i2caddr); +#if ARDUINO >= 100 + Wire.write((byte)addr); +#else + Wire.send(addr); +#endif + Wire.endTransmission(); + Wire.requestFrom(MCP23008_ADDRESS | i2caddr, 1); + +#if ARDUINO >= 100 + return Wire.read(); +#else + return Wire.receive(); +#endif +} + + +void Adafruit_MCP23008::write8(uint8_t addr, uint8_t data) { + Wire.beginTransmission(MCP23008_ADDRESS | i2caddr); +#if ARDUINO >= 100 + Wire.write((byte)addr); + Wire.write((byte)data); +#else + Wire.send(addr); + Wire.send(data); +#endif + Wire.endTransmission(); +} diff --git a/libraries/Adafruit_LiquidCrystal/utility/Adafruit_MCP23008.h b/libraries/Adafruit_LiquidCrystal/utility/Adafruit_MCP23008.h new file mode 100644 index 0000000..fe13d4d --- /dev/null +++ b/libraries/Adafruit_LiquidCrystal/utility/Adafruit_MCP23008.h @@ -0,0 +1,50 @@ +/*************************************************** + This is a library for the MCP23008 i2c port expander + + These displays use I2C to communicate, 2 pins are required to + interface + Adafruit invests time and resources providing this open source code, + please support Adafruit and open-source hardware by purchasing + products from Adafruit! + + Written by Limor Fried/Ladyada for Adafruit Industries. + BSD license, all text above must be included in any redistribution + ****************************************************/ + +#ifndef _ADAFRUIT_MCP23008_H +#define _ADAFRUIT_MCP23008_H +// Don't forget the Wire library +class Adafruit_MCP23008 { +public: + void begin(uint8_t addr); + void begin(void); + + void pinMode(uint8_t p, uint8_t d); + void digitalWrite(uint8_t p, uint8_t d); + void pullUp(uint8_t p, uint8_t d); + uint8_t digitalRead(uint8_t p); + uint8_t readGPIO(void); + void writeGPIO(uint8_t); + + private: + uint8_t i2caddr; + uint8_t read8(uint8_t addr); + void write8(uint8_t addr, uint8_t data); +}; + +#define MCP23008_ADDRESS 0x20 + +// registers +#define MCP23008_IODIR 0x00 +#define MCP23008_IPOL 0x01 +#define MCP23008_GPINTEN 0x02 +#define MCP23008_DEFVAL 0x03 +#define MCP23008_INTCON 0x04 +#define MCP23008_IOCON 0x05 +#define MCP23008_GPPU 0x06 +#define MCP23008_INTF 0x07 +#define MCP23008_INTCAP 0x08 +#define MCP23008_GPIO 0x09 +#define MCP23008_OLAT 0x0A + +#endif