Test SD
Dependencies: FatFileSystem SDFileSystem mbed
TextLCD.h
00001 /* mbed TextLCD Library 00002 * Copyright (c) 2007-2009 sford 00003 * Released under the MIT License: http://mbed.org/license/mit 00004 * 00005 * TODO: Needs serious rework/neatening up! 00006 */ 00007 00008 #ifndef MBED_TEXTLCD_H 00009 #define MBED_TEXTLCD_H 00010 00011 #include "Stream.h" 00012 #include "DigitalOut.h" 00013 #include "BusOut.h" 00014 00015 namespace mbed { 00016 00017 /* Class: TextLCD 00018 * A 16x2 Text LCD controller 00019 * 00020 * Allows you to print to a Text LCD screen, and locate/cls. Could be 00021 * turned in to a more generic libray. 00022 * 00023 * If you are connecting multiple displays, you can connect them all in 00024 * parallel except for the enable (e) pin, which must be unique for each 00025 * display. 00026 * 00027 * Example: 00028 * > #include "mbed.h" 00029 * > #include "TextLCD.h" 00030 * > 00031 * > TextLCD lcd(p24, p25, p26, p27, p28, p29, p30); // rs, rw, e, d0, d1, d2, d3 00032 * > 00033 * > int main() { 00034 * > lcd.printf("Hello World!"); 00035 * > } 00036 */ 00037 class TextLCD : public Stream { 00038 00039 public: 00040 /* Constructor: TextLCD 00041 * Create a TextLCD object, connected to the specified pins 00042 * 00043 * All signals must be connected to DigitalIn compatible pins. 00044 * 00045 * Variables: 00046 * rs - Used to specify data or command 00047 * rw - Used to determine read or write 00048 * e - enable 00049 * d0..d3 - The data lines 00050 */ 00051 TextLCD(PinName rs, PinName rw, PinName e, PinName d0, PinName d1, 00052 PinName d2, PinName d3, int columns = 16, int rows = 2); 00053 00054 #if 0 // Inhereted from Stream, for documentation only 00055 /* Function: putc 00056 * Write a character 00057 * 00058 * Variables: 00059 * c - The character to write to the serial port 00060 */ 00061 int putc(int c); 00062 00063 /* Function: printf 00064 * Write a formated string 00065 * 00066 * Variables: 00067 * format - A printf-style format string, followed by the 00068 * variables to use in formating the string. 00069 */ 00070 int printf(const char* format, ...); 00071 #endif 00072 00073 /* Function: locate 00074 * Locate to a certian position 00075 * 00076 * Variables: 00077 * column - the column to locate to, from 0..15 00078 * row - the row to locate to, from 0..1 00079 */ 00080 virtual void locate(int column, int row); 00081 00082 /* Function: cls 00083 * Clear the screen, and locate to 0,0 00084 */ 00085 virtual void cls(); 00086 00087 virtual void reset(); 00088 00089 //protected: 00090 00091 void clock(); 00092 void writeData(int data); 00093 void writeCommand(int command); 00094 void writeByte(int value); 00095 void writeNibble(int value); 00096 virtual int _putc(int c); 00097 virtual int _getc(); 00098 virtual void newline(); 00099 00100 int _row; 00101 int _column; 00102 DigitalOut _rw, _rs, _e; 00103 BusOut _d; 00104 int _columns; 00105 int _rows; 00106 00107 }; 00108 00109 } 00110 00111 #endif
Generated on Sat Jul 16 2022 10:01:33 by 1.7.2