Diff: N3310LCD.cpp

Revision:

0:36fb749b83c7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/N3310LCD.cpp	Mon Dec 07 17:24:52 2009 +0000
@@ -0,0 +1,176 @@
+/*
+* N3310LCD. A program to interface mbed with the nuelectronics
+* Nokia 3310 LCD shield from www.nuelectronics.com. Ported from
+* the nuelectronics Arduino code.
+*
+* Copyright (C) <2009> Petras Saduikis <petras@petras.co.uk>
+*
+* This file is part of N3310LCD.
+*
+* N3310LCD is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+* 
+* N3310LCD is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with N3310LCD.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "N3310LCD.h"
+#include "N3310Fonts.h"
+
+N3310LCD::N3310LCD (PinName mosi, PinName miso, PinName sck, 
+                    PinName ce, PinName dat_cmd, PinName lcd_rst, PinName bl_on) : 
+                    lcdPort(mosi, miso, sck),
+                    ceWire(ce), dcWire(dat_cmd), rstWire(lcd_rst), blWire(bl_on)
+{
+}
+
+void N3310LCD::init()
+{
+    // use default SPI format
+    lcdPort.format(8,0);
+    lcdPort.frequency(1000000);
+    
+    // lcd reset
+    wait_ms(1);
+    rstWire = 0;
+    wait_ms(1);
+    rstWire = 1;
+    
+    write(0x21, CMD);    
+    write(0xc8, CMD);    
+    write(0x06, CMD);    
+    write(0x13, CMD);    
+    write(0x20, CMD);    
+    cls();            
+    write(0x0c, CMD);
+}
+
+void N3310LCD::cls()
+{
+    write(0x0c, CMD);            
+    write(0x80, CMD);            
+
+    for (int i = 0; i < 504; i++)
+    {
+        write(0, DATA);
+    }
+}
+
+void N3310LCD::backlight(eBacklight state)
+{
+    // switch off/on back light
+    blWire = state;
+}
+
+void N3310LCD::write(BYTE data, eRequestType req_type)
+{
+    // bring CS low for write
+    ceWire = 0;
+    
+    if (CMD == req_type)
+        dcWire = 0;
+    else // DATA
+        dcWire = 1;
+        
+    lcdPort.write(data);
+    
+    // write finished
+    ceWire = 1;
+}
+
+void N3310LCD::locate(BYTE xPos, BYTE yPos)
+{
+    write(0x40 | yPos, CMD);      // column
+    write(0x80 | xPos, CMD);      // row    
+}
+
+void N3310LCD::drawBitmap(BYTE xPos, BYTE yPos, BYTE* bitmap, BYTE bmpXSize, BYTE bmpYSize)
+{
+    BYTE row;
+    
+    if (0 == bmpYSize % 8)
+        row = bmpYSize/8;  
+    else
+        row = bmpYSize/8 + 1;
+    
+    for (BYTE n = 0; n < row; n++)
+    {
+        locate(xPos, yPos);
+        for(BYTE i = 0; i < bmpXSize; i++)
+        {
+            write(bitmap[i + (n * bmpXSize)], DATA);
+        }
+        yPos++;                       
+    }
+}
+
+void N3310LCD::writeString(BYTE xPos, BYTE yPos, char* string, eDisplayMode mode)
+{
+    locate(xPos, yPos);
+    
+    while (*string) 
+    {
+        writeChar(*string++, mode);
+    }
+}
+                  
+void N3310LCD::writeStringBig(BYTE xPos, BYTE yPos, char* string, eDisplayMode mode)
+{
+    while (*string)
+    {     
+        writeCharBig(xPos, yPos, *string , mode);
+        
+        if('.' == *string++)
+            xPos += 5;
+        else
+            xPos += 12;
+    }
+}
+
+void N3310LCD::writeChar(BYTE ch, eDisplayMode mode)
+{
+    BYTE sendByte;
+    
+    unsigned char* pFont = (unsigned char*)font6_8;
+    ch -= 32;
+
+    for (BYTE line = 0; line < 6; line++)
+    {
+        sendByte = *(pFont + ch*6 + line);
+        write((mode == NORMAL)? sendByte: (sendByte ^ 0xff) , DATA);
+    }
+}
+
+void N3310LCD::writeCharBig(BYTE xPos, BYTE yPos, BYTE ch, eDisplayMode mode)
+{
+    BYTE sendByte;
+   
+    unsigned char* pFont = (unsigned char *) big_number;
+   
+    if('.' == ch)
+        ch = 10;
+    else if ('+' == ch)
+        ch = 11;
+    else if ('-' == ch)
+        ch = 12;
+    else
+        ch = ch & 0x0f;
+    
+    for(BYTE i = 0; i < 3; i++)
+    {    
+        locate(xPos, yPos + i);
+ 
+        for(BYTE j = 0; j < 16; j++)
+        {
+            sendByte =  *(pFont + ch*48 + i*16 + j);
+            write((mode == NORMAL)? sendByte : (sendByte^0xff), DATA);
+        }
+    }
+}