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author | Marti Bolivar <mbolivar@mit.edu> | 2010-12-27 17:09:34 -0500 |
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committer | Marti Bolivar <mbolivar@mit.edu> | 2010-12-27 17:09:34 -0500 |
commit | 82077200e036c1f12d885fabbcbd95eb4bfa415b (patch) | |
tree | 6f28cb48c3c0b11e0b541754f151f65ba6b8d10c /libraries/LiquidCrystal | |
parent | d5ad2a27f4e69e6cc9324331945937c983c30366 (diff) | |
download | librambutan-82077200e036c1f12d885fabbcbd95eb4bfa415b.tar.gz librambutan-82077200e036c1f12d885fabbcbd95eb4bfa415b.zip |
adding missing libraries from maple-ide repo
Diffstat (limited to 'libraries/LiquidCrystal')
-rw-r--r-- | libraries/LiquidCrystal/LiquidCrystal.cpp | 324 | ||||
-rw-r--r-- | libraries/LiquidCrystal/LiquidCrystal.h | 105 | ||||
-rw-r--r-- | libraries/LiquidCrystal/rules.mk | 29 |
3 files changed, 458 insertions, 0 deletions
diff --git a/libraries/LiquidCrystal/LiquidCrystal.cpp b/libraries/LiquidCrystal/LiquidCrystal.cpp new file mode 100644 index 0000000..52f0308 --- /dev/null +++ b/libraries/LiquidCrystal/LiquidCrystal.cpp @@ -0,0 +1,324 @@ +#include "LiquidCrystal.h" + +#include <stdio.h> +#include <string.h> +#include "WProgram.h" + +// 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 +// LiquidCrystal constructor is called). + +// This library has been modified to be compatible with the LeafLabs Maple; +// very conservative timing is used due to problems with delayMicroseconds() +// that should be fixed in the 0.0.7 release of the libmaple. [bnewbold] + +LiquidCrystal::LiquidCrystal(uint8 rs, uint8 rw, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3, + uint8 d4, uint8 d5, uint8 d6, uint8 d7) +{ + init(0, rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7); +} + +LiquidCrystal::LiquidCrystal(uint8 rs, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3, + uint8 d4, uint8 d5, uint8 d6, uint8 d7) +{ + init(0, rs, 255, enable, d0, d1, d2, d3, d4, d5, d6, d7); +} + +LiquidCrystal::LiquidCrystal(uint8 rs, uint8 rw, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3) +{ + init(1, rs, rw, enable, d0, d1, d2, d3, 0, 0, 0, 0); +} + +LiquidCrystal::LiquidCrystal(uint8 rs, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3) +{ + init(1, rs, 255, enable, d0, d1, d2, d3, 0, 0, 0, 0); +} + +void LiquidCrystal::init(uint8 fourbitmode, uint8 rs, uint8 rw, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3, + uint8 d4, uint8 d5, uint8 d6, uint8 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; + + 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 (fourbitmode) + _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS; + else + _displayfunction = LCD_8BITMODE | LCD_1LINE | LCD_5x8DOTS; + + // TODO: bnewbold, re-enable this? + begin(16, 1); +} + +void LiquidCrystal::begin(uint8 cols, uint8 lines, uint8 dotsize) { + 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 + delay(50); // Maple mod + //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); + delay(5); // Maple mod + //delayMicroseconds(4500); // wait min 4.1ms + + // second try + write4bits(0x03); + delay(5); // Maple mod + //delayMicroseconds(4500); // wait min 4.1ms + + // third go! + write4bits(0x03); + delay(1); // Maple mod + //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); + delay(5); // Maple mod + //delayMicroseconds(4500); // wait more than 4.1ms + + // second try + command(LCD_FUNCTIONSET | _displayfunction); + delay(1); // Maple mod + //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 LiquidCrystal::clear() +{ + command(LCD_CLEARDISPLAY); // clear display, set cursor position to zero + delay(2); // Maple mod + //delayMicroseconds(2000); // this command takes a long time! +} + +void LiquidCrystal::home() +{ + command(LCD_RETURNHOME); // set cursor position to zero + delay(2); // Maple mod + //delayMicroseconds(2000); // this command takes a long time! +} + +void LiquidCrystal::setCursor(uint8 col, uint8 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 LiquidCrystal::noDisplay() { + _displaycontrol &= ~LCD_DISPLAYON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} +void LiquidCrystal::display() { + _displaycontrol |= LCD_DISPLAYON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} + +// Turns the underline cursor on/off +void LiquidCrystal::noCursor() { + _displaycontrol &= ~LCD_CURSORON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} +void LiquidCrystal::cursor() { + _displaycontrol |= LCD_CURSORON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} + +// Turn on and off the blinking cursor +void LiquidCrystal::noBlink() { + _displaycontrol &= ~LCD_BLINKON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} +void LiquidCrystal::blink() { + _displaycontrol |= LCD_BLINKON; + command(LCD_DISPLAYCONTROL | _displaycontrol); +} + +// These commands scroll the display without changing the RAM +void LiquidCrystal::scrollDisplayLeft(void) { + command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT); +} +void LiquidCrystal::scrollDisplayRight(void) { + command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT); +} + +// This is for text that flows Left to Right +void LiquidCrystal::leftToRight(void) { + _displaymode |= LCD_ENTRYLEFT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// This is for text that flows Right to Left +void LiquidCrystal::rightToLeft(void) { + _displaymode &= ~LCD_ENTRYLEFT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// This will 'right justify' text from the cursor +void LiquidCrystal::autoscroll(void) { + _displaymode |= LCD_ENTRYSHIFTINCREMENT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// This will 'left justify' text from the cursor +void LiquidCrystal::noAutoscroll(void) { + _displaymode &= ~LCD_ENTRYSHIFTINCREMENT; + command(LCD_ENTRYMODESET | _displaymode); +} + +// Allows us to fill the first 8 CGRAM locations +// with custom characters +void LiquidCrystal::createChar(uint8 location, uint8 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 LiquidCrystal::command(uint8 value) { + send(value, LOW); +} + +inline void LiquidCrystal::write(uint8 value) { + send(value, HIGH); +} + +/************ low level data pushing commands **********/ + +// write either command or data, with automatic 4/8-bit selection +void LiquidCrystal::send(uint8 value, uint8 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 LiquidCrystal::pulseEnable(void) { + digitalWrite(_enable_pin, LOW); + delay(1); // Maple mod + //delayMicroseconds(1); + digitalWrite(_enable_pin, HIGH); + delay(1); // Maple mod + //delayMicroseconds(1); // enable pulse must be >450ns + digitalWrite(_enable_pin, LOW); + delay(1); // Maple mod + //delayMicroseconds(100); // commands need > 37us to settle +} + +void LiquidCrystal::write4bits(uint8 value) { + for (int i = 0; i < 4; i++) { + pinMode(_data_pins[i], OUTPUT); + digitalWrite(_data_pins[i], (value >> i) & 0x01); + } + + pulseEnable(); +} + +void LiquidCrystal::write8bits(uint8 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/LiquidCrystal/LiquidCrystal.h b/libraries/LiquidCrystal/LiquidCrystal.h new file mode 100644 index 0000000..0baf543 --- /dev/null +++ b/libraries/LiquidCrystal/LiquidCrystal.h @@ -0,0 +1,105 @@ +#ifndef LiquidCrystal_h +#define LiquidCrystal_h + +//#include <inttypes.h> +#include "wirish.h" +#include "Print.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 LiquidCrystal : public Print { +public: + LiquidCrystal(uint8 rs, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3, + uint8 d4, uint8 d5, uint8 d6, uint8 d7); + LiquidCrystal(uint8 rs, uint8 rw, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3, + uint8 d4, uint8 d5, uint8 d6, uint8 d7); + LiquidCrystal(uint8 rs, uint8 rw, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3); + LiquidCrystal(uint8 rs, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3); + + void init(uint8 fourbitmode, uint8 rs, uint8 rw, uint8 enable, + uint8 d0, uint8 d1, uint8 d2, uint8 d3, + uint8 d4, uint8 d5, uint8 d6, uint8 d7); + + void begin(uint8 cols, uint8 rows, uint8 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(); + + void createChar(uint8, uint8[]); + void setCursor(uint8, uint8); + virtual void write(uint8); + void command(uint8); +private: + void send(uint8, uint8); + void write4bits(uint8); + void write8bits(uint8); + void pulseEnable(); + + uint8 _rs_pin; // LOW: command. HIGH: character. + uint8 _rw_pin; // LOW: write to LCD. HIGH: read from LCD. + uint8 _enable_pin; // activated by a HIGH pulse. + uint8 _data_pins[8]; + + uint8 _displayfunction; + uint8 _displaycontrol; + uint8 _displaymode; + + uint8 _initialized; + + uint8 _numlines,_currline; +}; + +#endif diff --git a/libraries/LiquidCrystal/rules.mk b/libraries/LiquidCrystal/rules.mk new file mode 100644 index 0000000..7b18203 --- /dev/null +++ b/libraries/LiquidCrystal/rules.mk @@ -0,0 +1,29 @@ +# Standard things +sp := $(sp).x +dirstack_$(sp) := $(d) +d := $(dir) +BUILDDIRS += $(BUILD_PATH)/$(d) + +# Local flags +CFLAGS_$(d) := $(WIRISH_INCLUDES) $(LIBMAPLE_INCLUDES) + +# Local rules and targets +cSRCS_$(d) := + +cppSRCS_$(d) := LiquidCrystal.cpp + +cFILES_$(d) := $(cSRCS_$(d):%=$(d)/%) +cppFILES_$(d) := $(cppSRCS_$(d):%=$(d)/%) + +OBJS_$(d) := $(cFILES_$(d):%.c=$(BUILD_PATH)/%.o) \ + $(cppFILES_$(d):%.cpp=$(BUILD_PATH)/%.o) +DEPS_$(d) := $(OBJS_$(d):%.o=%.d) + +$(OBJS_$(d)): TGT_CFLAGS := $(CFLAGS_$(d)) + +TGT_BIN += $(OBJS_$(d)) + +# Standard things +-include $(DEPS_$(d)) +d := $(dirstack_$(sp)) +sp := $(basename $(sp))
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