lcd: add internal columns, rows
This commit is contained in:
Vasily Davydov
parent
eec05297a3
commit
243766044c
@ -1,11 +1,11 @@
|
||||
#ifndef LiquidCrystal_h
|
||||
#define LiquidCrystal_h
|
||||
|
||||
|
||||
#include "DigitalIoPin.h"
|
||||
#include "chip.h"
|
||||
#include <cstddef>
|
||||
#include <string>
|
||||
#include "chip.h"
|
||||
#include "DigitalIoPin.h"
|
||||
|
||||
|
||||
// commands
|
||||
#define LCD_CLEARDISPLAY 0x01
|
||||
@ -45,11 +45,11 @@
|
||||
#define LCD_5x10DOTS 0x04
|
||||
#define LCD_5x8DOTS 0x00
|
||||
|
||||
class LiquidCrystal {
|
||||
class LiquidCrystal
|
||||
{
|
||||
public:
|
||||
|
||||
LiquidCrystal(DigitalIoPin *rs, DigitalIoPin *enable,
|
||||
DigitalIoPin *d0, DigitalIoPin *d1, DigitalIoPin *d2, DigitalIoPin *d3);
|
||||
LiquidCrystal (DigitalIoPin *rs, DigitalIoPin *enable, DigitalIoPin *d0,
|
||||
DigitalIoPin *d1, DigitalIoPin *d2, DigitalIoPin *d3);
|
||||
|
||||
void begin (uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS);
|
||||
|
||||
@ -92,6 +92,7 @@ private:
|
||||
uint8_t _initialized;
|
||||
|
||||
uint8_t _numlines, _currline;
|
||||
uint8_t rows, col;
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
@ -1,16 +1,39 @@
|
||||
#include "LiquidCrystal.h"
|
||||
|
||||
#include <cstring>
|
||||
#include "chip.h"
|
||||
#include <cstring>
|
||||
|
||||
#define LOW 0
|
||||
#define HIGH 1
|
||||
|
||||
|
||||
|
||||
void delayMicroseconds(unsigned int us)
|
||||
void
|
||||
delayMicroseconds (unsigned int us)
|
||||
{
|
||||
// implement with RIT
|
||||
uint32_t reg;
|
||||
// calculate compare value
|
||||
uint64_t cmp = (Chip_Clock_GetSystemClockRate () / 1000000)
|
||||
* us; // One cycle equals ~72 us, thus cycle * us
|
||||
// disable RIT – compare value may only be changed when RIT is disabled
|
||||
reg = LPC_RITIMER->CTRL & 0xF;
|
||||
LPC_RITIMER->CTRL = reg & ~RIT_CTRL_TEN;
|
||||
// set compare value to RIT
|
||||
LPC_RITIMER->COMPVAL = (uint32_t)cmp;
|
||||
LPC_RITIMER->COMPVAL_H = (uint32_t) (cmp >> 32);
|
||||
// clear RIT counter (so that counting starts from zero)
|
||||
LPC_RITIMER->COUNTER = (uint32_t)0;
|
||||
LPC_RITIMER->COUNTER_H = (uint32_t) (0 >> 32);
|
||||
// enable RIT
|
||||
reg = LPC_RITIMER->CTRL & 0xF;
|
||||
LPC_RITIMER->CTRL = reg | RIT_CTRL_TEN;
|
||||
// wait until RIT Int flag is set
|
||||
while (!(LPC_RITIMER->CTRL & RIT_CTRL_INT))
|
||||
;
|
||||
// disable RIT
|
||||
reg = LPC_RITIMER->CTRL & 0xF;
|
||||
LPC_RITIMER->CTRL = reg & ~RIT_CTRL_TEN;
|
||||
// clear RIT Int flag
|
||||
reg = LPC_RITIMER->CTRL & 0xF;
|
||||
LPC_RITIMER->CTRL = reg | RIT_CTRL_INT;
|
||||
}
|
||||
|
||||
// When the display powers up, it is configured as follows:
|
||||
@ -32,11 +55,9 @@ void delayMicroseconds(unsigned int us)
|
||||
// can't assume that its in that state when a sketch starts (and the
|
||||
// LiquidCrystal constructor is called).
|
||||
|
||||
|
||||
|
||||
|
||||
LiquidCrystal::LiquidCrystal (DigitalIoPin *rs, DigitalIoPin *enable,
|
||||
DigitalIoPin *d0, DigitalIoPin *d1, DigitalIoPin *d2, DigitalIoPin *d3)
|
||||
DigitalIoPin *d0, DigitalIoPin *d1,
|
||||
DigitalIoPin *d2, DigitalIoPin *d3)
|
||||
{
|
||||
rs_pin = rs;
|
||||
enable_pin = enable;
|
||||
@ -51,21 +72,28 @@ LiquidCrystal::LiquidCrystal(DigitalIoPin *rs, DigitalIoPin *enable,
|
||||
begin (16, 2); // default to 16x2 display
|
||||
}
|
||||
|
||||
void LiquidCrystal::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
|
||||
if (lines > 1) {
|
||||
void
|
||||
LiquidCrystal::begin (uint8_t cols, uint8_t lines, uint8_t dotsize)
|
||||
{
|
||||
this->rows = lines;
|
||||
this->col = cols;
|
||||
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)) {
|
||||
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
|
||||
// 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
|
||||
rs_pin->write (false); // digitalWrite(_rs_pin, LOW);
|
||||
@ -73,7 +101,8 @@ void LiquidCrystal::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
|
||||
|
||||
// note: this port supports only 4 bit mode
|
||||
// put the LCD into 4 bit or 8 bit mode
|
||||
if (! (_displayfunction & LCD_8BITMODE)) {
|
||||
if (!(_displayfunction & LCD_8BITMODE))
|
||||
{
|
||||
// this is according to the hitachi HD44780 datasheet
|
||||
// figure 24, pg 46
|
||||
|
||||
@ -91,7 +120,9 @@ void LiquidCrystal::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
|
||||
|
||||
// finally, set to 4-bit interface
|
||||
write4bits (0x02);
|
||||
} else {
|
||||
}
|
||||
else
|
||||
{
|
||||
// this is according to the hitachi HD44780 datasheet
|
||||
// page 45 figure 23
|
||||
|
||||
@ -121,35 +152,47 @@ void LiquidCrystal::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
|
||||
_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
|
||||
// set the entry mode
|
||||
command (LCD_ENTRYMODESET | _displaymode);
|
||||
|
||||
}
|
||||
|
||||
/********** high level commands, for the user! */
|
||||
void LiquidCrystal::clear()
|
||||
void
|
||||
LiquidCrystal::clear ()
|
||||
{
|
||||
command (LCD_CLEARDISPLAY); // clear display, set cursor position to zero
|
||||
delayMicroseconds (2000); // this command takes a long time!
|
||||
}
|
||||
|
||||
void LiquidCrystal::home()
|
||||
void
|
||||
LiquidCrystal::home ()
|
||||
{
|
||||
command (LCD_RETURNHOME); // set cursor position to zero
|
||||
delayMicroseconds (2000); // this command takes a long time!
|
||||
}
|
||||
|
||||
|
||||
void LiquidCrystal::print(std::string const &s)
|
||||
void
|
||||
LiquidCrystal::print (std::string const &s)
|
||||
{
|
||||
this->print (s.c_str ());
|
||||
}
|
||||
|
||||
void LiquidCrystal::print(const char *s)
|
||||
void
|
||||
LiquidCrystal::print (const char *s)
|
||||
{
|
||||
int char_counter = 0;
|
||||
while (*s && char_counter < this->col)
|
||||
{
|
||||
send (*s, HIGH);
|
||||
char_counter++;
|
||||
s++;
|
||||
}
|
||||
}
|
||||
|
||||
void LiquidCrystal::setCursor(uint8_t col, uint8_t row)
|
||||
void
|
||||
LiquidCrystal::setCursor (uint8_t col, uint8_t row)
|
||||
{
|
||||
int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
|
||||
if ( row >= _numlines ) {
|
||||
if (row >= _numlines)
|
||||
{
|
||||
row = _numlines - 1; // we count rows starting w/0
|
||||
}
|
||||
|
||||
@ -157,84 +200,115 @@ void LiquidCrystal::setCursor(uint8_t col, uint8_t row)
|
||||
}
|
||||
|
||||
// Turn the display on/off (quickly)
|
||||
void LiquidCrystal::noDisplay() {
|
||||
void
|
||||
LiquidCrystal::noDisplay ()
|
||||
{
|
||||
_displaycontrol &= ~LCD_DISPLAYON;
|
||||
command (LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
void LiquidCrystal::display() {
|
||||
void
|
||||
LiquidCrystal::display ()
|
||||
{
|
||||
_displaycontrol |= LCD_DISPLAYON;
|
||||
command (LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
|
||||
// Turns the underline cursor on/off
|
||||
void LiquidCrystal::noCursor() {
|
||||
void
|
||||
LiquidCrystal::noCursor ()
|
||||
{
|
||||
_displaycontrol &= ~LCD_CURSORON;
|
||||
command (LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
void LiquidCrystal::cursor() {
|
||||
void
|
||||
LiquidCrystal::cursor ()
|
||||
{
|
||||
_displaycontrol |= LCD_CURSORON;
|
||||
command (LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
|
||||
// Turn on and off the blinking cursor
|
||||
void LiquidCrystal::noBlink() {
|
||||
void
|
||||
LiquidCrystal::noBlink ()
|
||||
{
|
||||
_displaycontrol &= ~LCD_BLINKON;
|
||||
command (LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
void LiquidCrystal::blink() {
|
||||
void
|
||||
LiquidCrystal::blink ()
|
||||
{
|
||||
_displaycontrol |= LCD_BLINKON;
|
||||
command (LCD_DISPLAYCONTROL | _displaycontrol);
|
||||
}
|
||||
|
||||
// These commands scroll the display without changing the RAM
|
||||
void LiquidCrystal::scrollDisplayLeft(void) {
|
||||
void
|
||||
LiquidCrystal::scrollDisplayLeft (void)
|
||||
{
|
||||
command (LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
|
||||
}
|
||||
void LiquidCrystal::scrollDisplayRight(void) {
|
||||
void
|
||||
LiquidCrystal::scrollDisplayRight (void)
|
||||
{
|
||||
command (LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
|
||||
}
|
||||
|
||||
// This is for text that flows Left to Right
|
||||
void LiquidCrystal::leftToRight(void) {
|
||||
void
|
||||
LiquidCrystal::leftToRight (void)
|
||||
{
|
||||
_displaymode |= LCD_ENTRYLEFT;
|
||||
command (LCD_ENTRYMODESET | _displaymode);
|
||||
}
|
||||
|
||||
// This is for text that flows Right to Left
|
||||
void LiquidCrystal::rightToLeft(void) {
|
||||
void
|
||||
LiquidCrystal::rightToLeft (void)
|
||||
{
|
||||
_displaymode &= ~LCD_ENTRYLEFT;
|
||||
command (LCD_ENTRYMODESET | _displaymode);
|
||||
}
|
||||
|
||||
// This will 'right justify' text from the cursor
|
||||
void LiquidCrystal::autoscroll(void) {
|
||||
void
|
||||
LiquidCrystal::autoscroll (void)
|
||||
{
|
||||
_displaymode |= LCD_ENTRYSHIFTINCREMENT;
|
||||
command (LCD_ENTRYMODESET | _displaymode);
|
||||
}
|
||||
|
||||
// This will 'left justify' text from the cursor
|
||||
void LiquidCrystal::noAutoscroll(void) {
|
||||
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_t location, uint8_t charmap[]) {
|
||||
void
|
||||
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++) {
|
||||
for (int i = 0; i < 8; i++)
|
||||
{
|
||||
write (charmap[i]);
|
||||
}
|
||||
}
|
||||
|
||||
/*********** mid level commands, for sending data/cmds */
|
||||
|
||||
inline void LiquidCrystal::command(uint8_t value) {
|
||||
inline void
|
||||
LiquidCrystal::command (uint8_t value)
|
||||
{
|
||||
send (value, LOW);
|
||||
}
|
||||
|
||||
inline size_t LiquidCrystal::write(uint8_t value) {
|
||||
inline size_t
|
||||
LiquidCrystal::write (uint8_t value)
|
||||
{
|
||||
send (value, HIGH);
|
||||
return 1; // assume sucess
|
||||
}
|
||||
@ -242,14 +316,18 @@ inline size_t LiquidCrystal::write(uint8_t value) {
|
||||
/************ low level data pushing commands **********/
|
||||
|
||||
// write either command or data
|
||||
void LiquidCrystal::send(uint8_t value, uint8_t mode) {
|
||||
void
|
||||
LiquidCrystal::send (uint8_t value, uint8_t mode)
|
||||
{
|
||||
rs_pin->write (mode); // digitalWrite(_rs_pin, mode);
|
||||
|
||||
write4bits (value >> 4);
|
||||
write4bits (value);
|
||||
}
|
||||
|
||||
void LiquidCrystal::pulseEnable(void) {
|
||||
void
|
||||
LiquidCrystal::pulseEnable (void)
|
||||
{
|
||||
enable_pin->write (false); // digitalWrite(_enable_pin, LOW);
|
||||
delayMicroseconds (1);
|
||||
enable_pin->write (true); // digitalWrite(_enable_pin, HIGH);
|
||||
@ -258,11 +336,15 @@ void LiquidCrystal::pulseEnable(void) {
|
||||
delayMicroseconds (100); // commands need > 37us to settle
|
||||
}
|
||||
|
||||
void LiquidCrystal::write4bits(uint8_t value) {
|
||||
for (int i = 0; i < 4; i++) {
|
||||
data_pins[i]->write((value >> i) & 0x01); //digitalWrite(_data_pins[i], (value >> i) & 0x01);
|
||||
void
|
||||
LiquidCrystal::write4bits (uint8_t value)
|
||||
{
|
||||
for (int i = 0; i < 4; i++)
|
||||
{
|
||||
data_pins[i]->write (
|
||||
(value >> i)
|
||||
& 0x01); // digitalWrite(_data_pins[i], (value >> i) & 0x01);
|
||||
}
|
||||
|
||||
pulseEnable ();
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user