Diff: SerialLCD/SerialLCD.cpp

Revision:

0:289aecd28ddc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SerialLCD/SerialLCD.cpp	Mon Sep 23 02:15:27 2013 +0000
@@ -0,0 +1,249 @@
+/*
+  SerialLCD.h - Serial LCD driver Library
+  2010 Copyright (c) Seeed Technology Inc.  All right reserved.
+ 
+  Original Author: Jimbo.We
+  Contribution: Visweswara R 
+  
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "SerialLCD.h"
+
+//Initialization Commands or Responses
+
+#define SLCD_INIT   0xA3
+#define SLCD_INIT_ACK   0xA5
+#define SLCD_INIT_DONE  0xAA
+
+//WorkingMode Commands or Responses
+#define SLCD_CONTROL_HEADER 0x9F
+#define SLCD_CHAR_HEADER    0xFE
+#define SLCD_CURSOR_HEADER  0xFF
+#define SLCD_CURSOR_ACK     0x5A
+
+#define SLCD_RETURN_HOME    0x61
+#define SLCD_DISPLAY_OFF    0x63
+#define SLCD_DISPLAY_ON     0x64
+#define SLCD_CLEAR_DISPLAY  0x65
+#define SLCD_CURSOR_OFF     0x66
+#define SLCD_CURSOR_ON      0x67
+#define SLCD_BLINK_OFF      0x68
+#define SLCD_BLINK_ON       0x69
+#define SLCD_SCROLL_LEFT    0x6C
+#define SLCD_SCROLL_RIGHT   0x72
+#define SLCD_NO_AUTO_SCROLL 0x6A
+#define SLCD_AUTO_SCROLL    0x6D
+#define SLCD_LEFT_TO_RIGHT  0x70
+#define SLCD_RIGHT_TO_LEFT  0x71
+#define SLCD_POWER_ON       0x83
+#define SLCD_POWER_OFF      0x82
+#define SLCD_INVALIDCOMMAND 0x46
+#define SLCD_BACKLIGHT_ON   0x81
+#define SLCD_BACKLIGHT_OFF  0x80
+
+SerialLCD::SerialLCD(PinName rx, PinName tx) : Serial(rx,tx)
+{
+    Serial::baud(9600);
+}
+
+/********** High level commands, for the user! **********/
+
+// Initialize the Serial LCD Driver. SerialLCD Module initiates the communication.
+void SerialLCD::begin()
+{
+    wait_ms(2);
+    Serial::putc(SLCD_CONTROL_HEADER);   
+    Serial::putc(SLCD_POWER_OFF); 
+    wait_ms(1);
+    Serial::putc(SLCD_CONTROL_HEADER);   
+    Serial::putc(SLCD_POWER_ON);
+    wait_ms(1);
+    Serial::putc(SLCD_INIT_ACK);
+    while(1)
+    {
+        if (Serial::readable() > 0 &&Serial::getc()==SLCD_INIT_DONE)
+            break;
+    }
+    wait_ms(2);
+}
+
+// Clear the display
+void SerialLCD::clear()
+{
+    Serial::putc(SLCD_CONTROL_HEADER);   
+    Serial::putc(SLCD_CLEAR_DISPLAY);   
+}
+
+// Return to home(top-left corner of LCD)
+void SerialLCD::home()
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_RETURN_HOME);  
+    wait_ms(2);//this command needs more time;  
+}
+
+// Set Cursor to (Column,Row) Position
+void SerialLCD::setCursor(uint8_t column, uint8_t row)
+{
+    Serial::putc(SLCD_CONTROL_HEADER); 
+    Serial::putc(SLCD_CURSOR_HEADER); //cursor header command
+    Serial::putc(column);
+    Serial::putc(row);
+}
+
+// Switch the display off without clearing RAM
+void SerialLCD::noDisplay() 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_DISPLAY_OFF);    
+}
+
+// Switch the display on
+void SerialLCD::display() 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_DISPLAY_ON);    
+}
+
+// Switch the underline cursor off
+void SerialLCD::noCursor() 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_CURSOR_OFF);     
+}
+
+// Switch the underline cursor on
+void SerialLCD::cursor() 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_CURSOR_ON);     
+}
+
+// Switch off the blinking cursor
+void SerialLCD::noBlink() 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_BLINK_OFF);     
+}
+
+// Switch on the blinking cursor
+void SerialLCD::blink() 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_BLINK_ON);     
+}
+
+// Scroll the display left without changing the RAM
+void SerialLCD::scrollDisplayLeft(void) 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_SCROLL_LEFT);
+}
+
+// Scroll the display right without changing the RAM
+void SerialLCD::scrollDisplayRight(void) 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_SCROLL_RIGHT);
+}
+
+// Set the text flow "Left to Right"
+void SerialLCD::leftToRight(void) 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_LEFT_TO_RIGHT);
+}
+
+// Set the text flow "Right to Left"
+void SerialLCD::rightToLeft(void) 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_RIGHT_TO_LEFT);
+}
+
+// This will 'right justify' text from the cursor
+void SerialLCD::autoscroll(void) 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_AUTO_SCROLL);
+}
+
+// This will 'left justify' text from the cursor
+void SerialLCD::noAutoscroll(void) 
+{
+    Serial::putc(SLCD_CONTROL_HEADER);
+    Serial::putc(SLCD_NO_AUTO_SCROLL);
+}
+void SerialLCD::Power(void)
+{
+    Serial::putc(SLCD_CONTROL_HEADER);   
+    Serial::putc(SLCD_POWER_ON); 
+}
+void SerialLCD::noPower(void)
+{
+    Serial::putc(SLCD_CONTROL_HEADER);   
+    Serial::putc(SLCD_POWER_OFF); 
+}
+//Turn off the backlight
+void SerialLCD::noBacklight(void)
+{
+    Serial::putc(SLCD_CONTROL_HEADER);   
+    Serial::putc(SLCD_BACKLIGHT_OFF);   
+}
+//Turn on the back light
+void SerialLCD::backlight(void)
+{
+    Serial::putc(SLCD_CONTROL_HEADER);   
+    Serial::putc(SLCD_BACKLIGHT_ON);   
+}
+// Print Commands
+
+void SerialLCD::print(uint8_t b)
+{
+    Serial::putc(SLCD_CHAR_HEADER);
+    Serial::putc(b);
+}
+void SerialLCD::print(const char b[])
+{
+    Serial::putc(SLCD_CHAR_HEADER);
+    Serial::puts(b);
+}
+
+void SerialLCD::print(unsigned long n, uint8_t base)
+{
+    unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars.
+    unsigned long i = 0;
+
+    if (base == 0) print(n);
+
+    else if(base!=0)
+    {
+        if (n == 0) {
+            print('0');
+            return;
+        }
+
+        while (n > 0) {
+            buf[i++] = n % base;
+            n /= base;
+        }
+
+        for (; i > 0; i--)
+            print((char) (buf[i - 1] < 10 ?
+                          '0' + buf[i - 1] :
+                          'A' + buf[i - 1] - 10));
+    }
+}