diff options
author | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
---|---|---|
committer | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /lib/usbhost/USB_Host_Shield_2.0/max_LCD.h | |
parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)
Diffstat (limited to 'lib/usbhost/USB_Host_Shield_2.0/max_LCD.h')
-rw-r--r-- | lib/usbhost/USB_Host_Shield_2.0/max_LCD.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/lib/usbhost/USB_Host_Shield_2.0/max_LCD.h b/lib/usbhost/USB_Host_Shield_2.0/max_LCD.h new file mode 100644 index 0000000000..950c9c5aa3 --- /dev/null +++ b/lib/usbhost/USB_Host_Shield_2.0/max_LCD.h @@ -0,0 +1,106 @@ +/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved. + +This software may be distributed and modified under the terms of the GNU +General Public License version 2 (GPL2) as published by the Free Software +Foundation and appearing in the file GPL2.TXT included in the packaging of +this file. Please note that GPL2 Section 2[b] requires that all works based +on this software must also be made publicly available under the terms of +the GPL2 ("Copyleft"). + +Contact information +------------------- + +Circuits At Home, LTD +Web : http://www.circuitsathome.com +e-mail : support@circuitsathome.com + */ +//HD44780 compatible LCD display via MAX3421E GPOUT support header +//pinout: D[4-7] -> GPOUT[4-7], RS-> GPOUT[2], E ->GPOUT[3] +// + +#ifndef _Max_LCD_h_ +#define _Max_LCD_h_ + +#include "Usb.h" +#include "Print.h" + +// commands +#define LCD_CLEARDISPLAY 0x01 +#define LCD_RETURNHOME 0x02 +#define LCD_ENTRYMODESET 0x04 +#define LCD_DISPLAYCONTROL 0x08 +#define LCD_CURSORSHIFT 0x10 +#define LCD_FUNCTIONSET 0x20 +#define LCD_SETCGRAMADDR 0x40 +#define LCD_SETDDRAMADDR 0x80 + +// flags for display entry mode +#define LCD_ENTRYRIGHT 0x00 +#define LCD_ENTRYLEFT 0x02 +#define LCD_ENTRYSHIFTINCREMENT 0x01 +#define LCD_ENTRYSHIFTDECREMENT 0x00 + +// flags for display on/off control +#define LCD_DISPLAYON 0x04 +#define LCD_DISPLAYOFF 0x00 +#define LCD_CURSORON 0x02 +#define LCD_CURSOROFF 0x00 +#define LCD_BLINKON 0x01 +#define LCD_BLINKOFF 0x00 + +// flags for display/cursor shift +#define LCD_DISPLAYMOVE 0x08 +#define LCD_CURSORMOVE 0x00 +#define LCD_MOVERIGHT 0x04 +#define LCD_MOVELEFT 0x00 + +// flags for function set +#define LCD_8BITMODE 0x10 +#define LCD_4BITMODE 0x00 +#define LCD_2LINE 0x08 +#define LCD_1LINE 0x00 +#define LCD_5x10DOTS 0x04 +#define LCD_5x8DOTS 0x00 + +class Max_LCD : public Print { + USB *pUsb; + +public: + Max_LCD(USB *pusb); + void init(); + void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS); + void clear(); + void home(); + void noDisplay(); + void display(); + void noBlink(); + void blink(); + void noCursor(); + void cursor(); + void scrollDisplayLeft(); + void scrollDisplayRight(); + void leftToRight(); + void rightToLeft(); + void autoscroll(); + void noAutoscroll(); + void createChar(uint8_t, uint8_t[]); + void setCursor(uint8_t, uint8_t); + void command(uint8_t); + +#if defined(ARDUINO) && ARDUINO >=100 + size_t write(uint8_t); + using Print::write; +#else + void write(uint8_t); +#endif + +private: + void sendbyte(uint8_t val); + uint8_t _displayfunction; //tokill + uint8_t _displaycontrol; + uint8_t _displaymode; + uint8_t _initialized; + uint8_t _numlines, _currline; +}; + +#endif |