Diff: TextLCD_595.cpp

Revision:

3:e604470d1838

Parent:

0:d4a4f76fffb5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD_595.cpp	Tue Apr 07 21:34:23 2015 +0000
@@ -0,0 +1,361 @@
+/* mbed TextLCD_595 Library, for a 4-bit LCD based on HD44780
+ * Copyright (c) 2007-2010, sford, http://mbed.org
+ * Changes by Erik Kerger
+ *
+ *
+ * Changes by Bogomazyuk Vasiliy (Богомазюк Василий) 
+ * Модуль испытан на жидкокристаллическом модуле MT–16S2D
+ *
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "TextLCD_595.h"
+#include "mbed.h"
+
+#include <string>
+
+#define __nop1 wait_us(1)
+
+const unsigned char utf_recode[] =
+{
+  0x41,0xa0,0x42,0xa1,0xe0,0x45,0xa3,0xa4,
+  0xa5,0xa6,0x4b,0xa7,0x4d,0x48,0x4f,0xa8,
+  0x50,0x43,0x54,0xa9,0xaa,0x58,0xe1,0xab,
+  0xac,0xe2,0xad,0xae,0x62,0xaf,0xb0,0xb1,
+  0x61,0xb2,0xb3,0xb4,0xe3,0x65,0xb6,0xb7,
+  0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0x6f,0xbe,
+  0x70,0x63,0xbf,0x79,0xe4,0x78,0xe5,0xc0,
+  0xc1,0xe6,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7
+};
+
+int ConvertChar(int c)
+{
+    int i=c;
+    if ((c>=0xD090)and(c<=0xD0BF))i=utf_recode[c-0xD090];
+    if ((c>=0xD180)and(c<=0xD18F))i=utf_recode[c-0xD150];
+    if (c==0xD081) i=0xA2;
+    if (c==0xD191) i=0xB5;
+    return i;
+}
+
+#define _BL 0x40
+#define _RS 0x10
+#define _E  0x20
+#define _D4 0x01
+#define _D5 0x02
+#define _D6 0x04
+#define _D7 0x08
+
+TextLCD_595::TextLCD_595(SPI *spi, PinName CS, LCDType type) : 
+                        _spi(spi), 
+                        _cs(CS), 
+                        _type(type) {
+        _spi->format(8,0);
+        _spi->frequency(1000000);
+
+        _cs = 0;
+        _spi->write(0x0);
+        _cs = 1;
+    if (_type != LCDuser)
+        setLCDparam(_type); // otherwise rows, colums, comdelay, adresses must be set before
+
+    wait(0.050f);       // Wait 50ms to ensure powered up
+
+    // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
+    // this sets controler into 8 bit mode, so we have a defined state
+    for (int i=0; i<3; i++) {
+        _cs = 0;
+        _spi->write(_E);
+        _cs = 1;
+        __nop1;
+        _cs = 0;
+        _spi->write(_E|_D4|_D5);
+        _cs = 1;
+        __nop1;
+        _cs = 0;
+        _spi->write(_D4|_D5);
+        _cs = 1;
+        wait_us(LCDparam.delay);
+       }
+    _cs = 0;
+    _spi->write(_E|_D4|_D5);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_E|_D5);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_D5);
+    _cs = 1;
+    wait_us(LCDparam.delay);
+    _comm = _D5;
+    
+    writeCommand(0x28); // Function set 4 Bit, 2Line, 5*7
+    writeCommand(0x08); // Display off
+    cls();              // clear display, reset _column and _row
+    writeCommand(0x04); // cursor right, Display is not shifted
+    _bl=_BL;            // Backlight on
+    writeCommand(0x0C); // Display on , Cursor off     
+    _setCursor=0x0;     //Курсор выключен и не мигает
+}
+
+void TextLCD_595::character(int column, int row, int c) {
+    int a = 0x80 | (LCDparam.adresses[row & 3] + column);
+    writeCommand(a);    // set cursor address
+    writeData(c);       // write char
+}
+
+void TextLCD_595::cls() {
+    writeCommand(0x01); // cls, and set cursor to 0
+    locate(0, 0);       // set internal position
+    wait_us(45 * LCDparam.delay);   // CLS need much time
+}
+
+void TextLCD_595::locate(int column, int row) {
+    _column = column;   // set position for next char
+    _row = row;         // note: cursor is not set yet
+}
+
+
+
+int TextLCD_595::_putc(int value) {
+    if (value == '\n') {
+        _column = 0;
+        _row++;
+        if (_row >= LCDparam.rows) {
+            _row = 0;
+        }
+    } else {
+        character(_column, _row, value);
+        _column++;
+        if (_column >= LCDparam.columns) {
+            _column = 0;
+            _row++;
+            if (_row >= LCDparam.rows) {
+                _row = 0;
+            }
+        }
+    }
+    return value;
+}
+
+// Dummy function - read not supported
+int TextLCD_595::_getc() {
+    return -1;
+}
+
+void TextLCD_595::writeByte(int value) {
+    _cs = 0;
+    _spi->write(_E|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _comm = value >> 4;        // higher nibble first
+    _cs = 0;
+    _spi->write(_E|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_E|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _comm = value & 0x0F;        // then lower
+    _cs = 0;
+    _spi->write(_E|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_bl|_comm);
+    _cs = 1;
+    __nop1;
+}
+
+void TextLCD_595::writeByteData(int value) {
+    _cs = 0;
+    _spi->write(_RS|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_E|_RS|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _comm = value >> 4;        // higher nibble first
+    _cs = 0;
+    _spi->write(_E|_RS|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_RS|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_E|_RS|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _comm = value & 0x0F;        // then lower
+    _cs = 0;
+    _spi->write(_E|_RS|_bl|_comm);
+    _cs = 1;
+    __nop1;
+    _cs = 0;
+    _spi->write(_RS|_bl|_comm);
+    _cs = 1;
+    wait_us(LCDparam.delay);
+    _cs = 0;
+    _spi->write(_bl|_comm);
+    _cs = 1;
+    __nop1;
+}
+
+
+void TextLCD_595::writeCommand(int command) {
+    writeByte(command);
+    wait_us(LCDparam.delay);
+}
+
+
+void TextLCD_595::writeData(int data) {
+    writeByteData(data);
+    wait_us(LCDparam.delay);
+}
+
+
+// set user defined char 
+void  TextLCD_595::writeCGRAM(int address, int pattern[8]){
+    int i;
+    address = address & 7;  //max 8 char
+    for(i=0;i<8;i++){
+        writeCommand(0x40 | (address * 8) + i);
+        writeData(pattern[i]);
+        }
+}   
+
+void TextLCD_595::setLCDparam(LCDType _type){
+    switch (_type) {
+    
+        case LCD16x2:
+        case LCD16x2B:
+            LCDparam.columns = 16;
+            break;
+        case LCD20x2:
+        case LCD20x4:
+            LCDparam.columns = 20;
+            break;
+        case LCD24x2:
+            LCDparam.columns = 24;
+            break;
+    }
+    if (_type == LCD20x4) 
+        LCDparam.rows = 4;
+    else 
+        LCDparam.rows = 2;
+        
+    LCDparam.adresses[0] = 0;
+    
+    if (_type == LCD16x2B)
+        LCDparam.adresses[1] = 40;
+    else
+        LCDparam.adresses[1] = 0x40;
+        
+    if (_type == LCD20x4) {
+        LCDparam.adresses[2] = 0x14;
+        LCDparam.adresses[3] = 0x54;}
+    else {
+        LCDparam.adresses[2] = 0;
+        LCDparam.adresses[3] = 0;}
+        
+    LCDparam.delay = 50;            // 50 us delays as default              
+}
+
+int TextLCD_595::putc_rus(int c) {
+    return putc(ConvertChar(c));
+}
+
+void TextLCD_595::print_rus(const string rustext){
+    int len = rustext.length();
+    for (int i=0; i<len; i++) {
+        uint16_t temp=uint8_t(rustext[i]);
+        i++;
+        temp=temp<<8|uint8_t(rustext[i]);
+        putc(ConvertChar(temp));  
+    };
+}
+
+
+void TextLCD_595::ShiftLCD_Left() {
+    writeCommand(0x18);
+}
+
+void TextLCD_595::ShiftLCD_Right() {
+    writeCommand(0x1C);
+}
+
+void TextLCD_595::ShiftCursor_Left() {
+    writeCommand(0x10);
+}
+
+void TextLCD_595::ShiftCursor_Right() {
+    writeCommand(0x14);
+}
+
+
+void TextLCD_595::home() {
+    writeCommand(0x2);
+}
+
+void TextLCD_595::on() {
+    writeCommand(0xC|_setCursor);
+}
+
+void TextLCD_595::off() {
+    writeCommand(0x8|_setCursor);
+}
+
+
+void TextLCD_595::SetCursor(int modeCursor) {
+    _setCursor=modeCursor;
+    writeCommand(0xC|_setCursor);
+}
+
+void TextLCD_595::CursorPosition(int column, int row) { //Устанавливаем позицию курсора
+    writeCommand(0x80 | (LCDparam.adresses[row & 3] + column));
+}
+
+
+void TextLCD_595::BackLightOn(){
+    _bl=_BL;
+    _cs = 0;
+    _spi->write(_bl|_comm);
+    _cs = 1;
+    __nop1;
+}
+
+void TextLCD_595::BackLightOff(){
+    _bl=0;
+    _cs = 0;
+    _spi->write(_bl|_comm);
+    _cs = 1;
+    __nop1;
+}
\ No newline at end of file