forked from Akcelerometry_drgania_WMT/PI_mikrokontroler
445 lines
13 KiB
C++
445 lines
13 KiB
C++
#include "LiquidCrystal_I2C.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).
|
|
LiquidCrystal_I2C::LiquidCrystal_I2C(uint8_t addr, uint8_t cols, uint8_t rows)
|
|
{
|
|
_Addr = addr;
|
|
_cols = cols;
|
|
_rows = rows;
|
|
_backlightval = LCD_NOBACKLIGHT;
|
|
}
|
|
|
|
void LiquidCrystal_I2C::init(){
|
|
init_priv();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::init_priv()
|
|
{
|
|
Wire.begin();
|
|
_displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
|
|
begin(_cols, _rows);
|
|
}
|
|
|
|
void LiquidCrystal_I2C::begin(uint8_t cols, uint8_t lines, uint8_t charsize) {
|
|
if (lines > 1) {
|
|
_displayfunction |= LCD_2LINE;
|
|
}
|
|
_numlines = lines;
|
|
|
|
// for some 1 line displays you can select a 10 pixel high font
|
|
if ((charsize != 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 before 4.5V so we'll wait 50
|
|
delayMicroseconds(50000);
|
|
|
|
// Now we pull both RS and R/W low to begin commands
|
|
expanderWrite(_backlightval); // reset expanderand turn backlight off (Bit 8 =1)
|
|
delay(1000);
|
|
|
|
// put the LCD into 4 bit mode
|
|
// this is according to the hitachi HD44780 datasheet
|
|
// figure 24, pg 46
|
|
|
|
// we start in 8bit mode, try to set 4 bit mode
|
|
write4bits(0x30);
|
|
delayMicroseconds(4500); // wait min 4.1ms
|
|
|
|
// second try
|
|
write4bits(0x30);
|
|
delayMicroseconds(4500); // wait min 4.1ms
|
|
|
|
// third go!
|
|
write4bits(0x30);
|
|
delayMicroseconds(150);
|
|
|
|
// finally, set to 4-bit interface
|
|
write4bits(0x20);
|
|
|
|
|
|
// 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 roman languages)
|
|
_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
|
|
|
|
// set the entry mode
|
|
command(LCD_ENTRYMODESET | _displaymode);
|
|
|
|
home();
|
|
|
|
}
|
|
|
|
|
|
|
|
/********** high level commands, for the user! */
|
|
void LiquidCrystal_I2C::clear(){
|
|
command(LCD_CLEARDISPLAY); // clear display, set cursor position to zero
|
|
delayMicroseconds(2000); // this command takes a long time!
|
|
}
|
|
|
|
// Clear particular segment of a row
|
|
void LiquidCrystal_I2C::clear(uint8_t rowStart, uint8_t colStart, uint8_t colCnt) {
|
|
// Maintain input parameters
|
|
rowStart = constrain(rowStart, 0, _rows - 1);
|
|
colStart = constrain(colStart, 0, _cols - 1);
|
|
colCnt = constrain(colCnt, 0, _cols - colStart);
|
|
// Clear segment
|
|
setCursor(colStart, rowStart);
|
|
for (uint8_t i = 0; i < colCnt; i++) write(' ');
|
|
// Go to segment start
|
|
setCursor(colStart, rowStart);
|
|
}
|
|
|
|
|
|
void LiquidCrystal_I2C::home(){
|
|
command(LCD_RETURNHOME); // set cursor position to zero
|
|
delayMicroseconds(2000); // this command takes a long time!
|
|
}
|
|
|
|
void LiquidCrystal_I2C::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 LiquidCrystal_I2C::noDisplay() {
|
|
_displaycontrol &= ~LCD_DISPLAYON;
|
|
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
|
}
|
|
void LiquidCrystal_I2C::display() {
|
|
_displaycontrol |= LCD_DISPLAYON;
|
|
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
|
}
|
|
|
|
// Turns the underline cursor on/off
|
|
void LiquidCrystal_I2C::noCursor() {
|
|
_displaycontrol &= ~LCD_CURSORON;
|
|
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
|
}
|
|
void LiquidCrystal_I2C::cursor() {
|
|
_displaycontrol |= LCD_CURSORON;
|
|
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
|
}
|
|
|
|
// Turn on and off the blinking cursor
|
|
void LiquidCrystal_I2C::noBlink() {
|
|
_displaycontrol &= ~LCD_BLINKON;
|
|
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
|
}
|
|
void LiquidCrystal_I2C::blink() {
|
|
_displaycontrol |= LCD_BLINKON;
|
|
command(LCD_DISPLAYCONTROL | _displaycontrol);
|
|
}
|
|
|
|
// These commands scroll the display without changing the RAM
|
|
void LiquidCrystal_I2C::scrollDisplayLeft(void) {
|
|
command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
|
|
}
|
|
void LiquidCrystal_I2C::scrollDisplayRight(void) {
|
|
command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
|
|
}
|
|
|
|
// This is for text that flows Left to Right
|
|
void LiquidCrystal_I2C::leftToRight(void) {
|
|
_displaymode |= LCD_ENTRYLEFT;
|
|
command(LCD_ENTRYMODESET | _displaymode);
|
|
}
|
|
|
|
// This is for text that flows Right to Left
|
|
void LiquidCrystal_I2C::rightToLeft(void) {
|
|
_displaymode &= ~LCD_ENTRYLEFT;
|
|
command(LCD_ENTRYMODESET | _displaymode);
|
|
}
|
|
|
|
// This will 'right justify' text from the cursor
|
|
void LiquidCrystal_I2C::autoscroll(void) {
|
|
_displaymode |= LCD_ENTRYSHIFTINCREMENT;
|
|
command(LCD_ENTRYMODESET | _displaymode);
|
|
}
|
|
|
|
// This will 'left justify' text from the cursor
|
|
void LiquidCrystal_I2C::noAutoscroll(void) {
|
|
_displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
|
|
command(LCD_ENTRYMODESET | _displaymode);
|
|
}
|
|
|
|
// Allows us to fill the first 8 CGRAM locations
|
|
// with custom characters
|
|
void LiquidCrystal_I2C::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]);
|
|
}
|
|
}
|
|
|
|
// Turn the (optional) backlight off/on
|
|
void LiquidCrystal_I2C::noBacklight(void) {
|
|
_backlightval=LCD_NOBACKLIGHT;
|
|
expanderWrite(0);
|
|
}
|
|
|
|
void LiquidCrystal_I2C::backlight(void) {
|
|
_backlightval=LCD_BACKLIGHT;
|
|
expanderWrite(0);
|
|
}
|
|
|
|
|
|
|
|
/*********** mid level commands, for sending data/cmds */
|
|
|
|
inline void LiquidCrystal_I2C::command(uint8_t value) {
|
|
send(value, 0);
|
|
}
|
|
|
|
inline size_t LiquidCrystal_I2C::write(uint8_t value) {
|
|
send(value, Rs);
|
|
return 1; // Number of processed bytes
|
|
}
|
|
|
|
|
|
|
|
/************ low level data pushing commands **********/
|
|
|
|
// write either command or data
|
|
void LiquidCrystal_I2C::send(uint8_t value, uint8_t mode) {
|
|
uint8_t highnib = value & 0xF0;
|
|
uint8_t lownib = value << 4;
|
|
write4bits((highnib)|mode);
|
|
write4bits((lownib)|mode);
|
|
}
|
|
|
|
void LiquidCrystal_I2C::write4bits(uint8_t value) {
|
|
expanderWrite(value);
|
|
pulseEnable(value);
|
|
}
|
|
|
|
void LiquidCrystal_I2C::expanderWrite(uint8_t _data){
|
|
Wire.beginTransmission(_Addr);
|
|
Wire.write((int)(_data) | _backlightval);
|
|
Wire.endTransmission();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::pulseEnable(uint8_t _data){
|
|
expanderWrite(_data | En); // En high
|
|
delayMicroseconds(1); // enable pulse must be >450ns
|
|
|
|
expanderWrite(_data & ~En); // En low
|
|
delayMicroseconds(50); // commands need > 37us to settle
|
|
}
|
|
|
|
// Create custom characters for horizontal graphs
|
|
uint8_t LiquidCrystal_I2C::graphHorizontalChars(uint8_t rowPattern) {
|
|
uint8_t cc[LCD_CHARACTER_VERTICAL_DOTS];
|
|
for (uint8_t idxCol = 0; idxCol < LCD_CHARACTER_HORIZONTAL_DOTS; idxCol++) {
|
|
for (uint8_t idxRow = 0; idxRow < LCD_CHARACTER_VERTICAL_DOTS; idxRow++) {
|
|
cc[idxRow] = rowPattern << (LCD_CHARACTER_HORIZONTAL_DOTS - 1 - idxCol);
|
|
}
|
|
createChar(idxCol, cc);
|
|
}
|
|
return LCD_CHARACTER_HORIZONTAL_DOTS;
|
|
}
|
|
|
|
// Create custom characters for vertical graphs
|
|
uint8_t LiquidCrystal_I2C::graphVerticalChars(uint8_t rowPattern) {
|
|
uint8_t cc[LCD_CHARACTER_VERTICAL_DOTS];
|
|
for (uint8_t idxChr = 0; idxChr < LCD_CHARACTER_VERTICAL_DOTS; idxChr++) {
|
|
for (uint8_t idxRow = 0; idxRow < LCD_CHARACTER_VERTICAL_DOTS; idxRow++) {
|
|
cc[LCD_CHARACTER_VERTICAL_DOTS - idxRow - 1] = idxRow > idxChr ? B00000 : rowPattern;
|
|
}
|
|
createChar(idxChr, cc);
|
|
}
|
|
return LCD_CHARACTER_VERTICAL_DOTS;
|
|
}
|
|
|
|
// Initializes custom characters for input graph type
|
|
uint8_t LiquidCrystal_I2C::init_bargraph(uint8_t graphtype) {
|
|
// Initialize row state vector
|
|
for(byte i = 0; i < _rows; i++) {
|
|
_graphstate[i] = 255;
|
|
}
|
|
switch (graphtype) {
|
|
case LCDI2C_VERTICAL_BAR_GRAPH:
|
|
graphVerticalChars(B11111);
|
|
// Initialize column state vector
|
|
for(byte i = _rows; i < _cols; i++) {
|
|
_graphstate[i] = 255;
|
|
}
|
|
break;
|
|
case LCDI2C_HORIZONTAL_BAR_GRAPH:
|
|
graphHorizontalChars(B11111);
|
|
break;
|
|
case LCDI2C_HORIZONTAL_LINE_GRAPH:
|
|
graphHorizontalChars(B00001);
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
_graphtype = graphtype;
|
|
return 0;
|
|
}
|
|
|
|
// Display horizontal graph from desired cursor position with input value
|
|
void LiquidCrystal_I2C::draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end) {
|
|
// Maintain input parameters
|
|
row = constrain(row, 0, _rows - 1);
|
|
column = constrain(column, 0, _cols - 1);
|
|
len = constrain(len, 0, _cols - column);
|
|
pixel_col_end = constrain(pixel_col_end, 0, (len * LCD_CHARACTER_HORIZONTAL_DOTS) - 1);
|
|
_graphstate[row] = constrain(_graphstate[row], column, column + len - 1);
|
|
// Display graph
|
|
switch (_graphtype) {
|
|
case LCDI2C_HORIZONTAL_BAR_GRAPH:
|
|
setCursor(column, row);
|
|
// Display full characters
|
|
for (uint8_t i = 0; i < pixel_col_end / LCD_CHARACTER_HORIZONTAL_DOTS; i++) {
|
|
write(LCD_CHARACTER_HORIZONTAL_DOTS - 1);
|
|
column++;
|
|
}
|
|
// Display last character
|
|
write(pixel_col_end % LCD_CHARACTER_HORIZONTAL_DOTS);
|
|
// Clear remaining chars in segment
|
|
for (uint8_t i = column; i < _graphstate[row]; i++) write(' ');
|
|
// Last drawn column as graph state
|
|
_graphstate[row] = column;
|
|
break;
|
|
case LCDI2C_HORIZONTAL_LINE_GRAPH:
|
|
// Drawn column as graph state
|
|
column += pixel_col_end / LCD_CHARACTER_HORIZONTAL_DOTS;
|
|
// Clear previous drawn character if differs from new one
|
|
if (_graphstate[row] != column) {
|
|
setCursor(_graphstate[row], row);
|
|
write(' ');
|
|
_graphstate[row] = column;
|
|
}
|
|
// Display graph character
|
|
setCursor(column, row);
|
|
write(pixel_col_end % LCD_CHARACTER_HORIZONTAL_DOTS);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
// Display horizontal graph from desired cursor position with input value
|
|
void LiquidCrystal_I2C::draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_row_end) {
|
|
// Maintain input parameters
|
|
row = constrain(row, 0, _rows - 1);
|
|
column = constrain(column, 0, _cols - 1);
|
|
len = constrain(len, 0, row + 1);
|
|
pixel_row_end = constrain(pixel_row_end, 0, (len * LCD_CHARACTER_VERTICAL_DOTS) - 1);
|
|
_graphstate[column] = constrain(_graphstate[column], row - len + 1, row);
|
|
// Display graph
|
|
switch (_graphtype) {
|
|
case LCDI2C_VERTICAL_BAR_GRAPH:
|
|
// Display full characters
|
|
for (uint8_t i = 0; i < pixel_row_end / LCD_CHARACTER_VERTICAL_DOTS; i++) {
|
|
setCursor(column, row--);
|
|
write(LCD_CHARACTER_VERTICAL_DOTS - 1);
|
|
}
|
|
// Display the highest character
|
|
setCursor(column, row);
|
|
write(pixel_row_end % LCD_CHARACTER_VERTICAL_DOTS);
|
|
// Clear remaining top chars in column
|
|
for (uint8_t i = _graphstate[column]; i < row; i++) {
|
|
setCursor(column, i);
|
|
write(' ');
|
|
}
|
|
_graphstate[column] = row; // Last drawn row as its state
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
// Overloaded methods
|
|
void LiquidCrystal_I2C::draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint16_t percentage) {
|
|
percentage = (percentage * len * LCD_CHARACTER_HORIZONTAL_DOTS / 100) - 1;
|
|
draw_horizontal_graph(row, column, len, (uint8_t) percentage);
|
|
}
|
|
void LiquidCrystal_I2C::draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, float ratio) {
|
|
ratio = (ratio * len * LCD_CHARACTER_HORIZONTAL_DOTS) - 1;
|
|
draw_horizontal_graph(row, column, len, (uint8_t) ratio);
|
|
}
|
|
void LiquidCrystal_I2C::draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint16_t percentage) {
|
|
percentage = (percentage * len * LCD_CHARACTER_VERTICAL_DOTS / 100) - 1;
|
|
draw_vertical_graph(row, column, len, (uint8_t) percentage);
|
|
}
|
|
void LiquidCrystal_I2C::draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, float ratio) {
|
|
ratio = (ratio * len * LCD_CHARACTER_VERTICAL_DOTS) - 1;
|
|
draw_vertical_graph(row, column, len, (uint8_t) ratio);
|
|
}
|
|
|
|
// Alias functions
|
|
|
|
void LiquidCrystal_I2C::on(){
|
|
display();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::off(){
|
|
noDisplay();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::cursor_on(){
|
|
cursor();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::cursor_off(){
|
|
noCursor();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::blink_on(){
|
|
blink();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::blink_off(){
|
|
noBlink();
|
|
}
|
|
|
|
void LiquidCrystal_I2C::load_custom_character(uint8_t char_num, uint8_t *rows){
|
|
createChar(char_num, rows);
|
|
}
|
|
|
|
void LiquidCrystal_I2C::setBacklight(uint8_t new_val){
|
|
if(new_val){
|
|
backlight(); // turn backlight on
|
|
}else{
|
|
noBacklight(); // turn backlight off
|
|
}
|
|
}
|
|
|
|
void LiquidCrystal_I2C::printstr(const char c[]){
|
|
//This function is not identical to the function used for "real" I2C displays
|
|
//it's here so the user sketch doesn't have to be changed
|
|
print(c);
|
|
}
|