From 1c4f7b6044bb8880886ba4d8bd578d689430377e Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Fri, 3 May 2013 00:09:07 +0200 Subject: digital/lcd/src: add first LCD program --- digital/lcd/src/lcd.hh | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 digital/lcd/src/lcd.hh (limited to 'digital/lcd/src/lcd.hh') diff --git a/digital/lcd/src/lcd.hh b/digital/lcd/src/lcd.hh new file mode 100644 index 00000000..e054c2e5 --- /dev/null +++ b/digital/lcd/src/lcd.hh @@ -0,0 +1,61 @@ +#ifndef lcd_hh +#define lcd_hh +// {{{ +// +// Copyright (C) 2013 Nicolas Schodet +// +// APBTeam: +// Web: http://apbteam.org/ +// Email: team AT apbteam DOT org +// +// This program 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 2 of the License, or +// (at your option) any later version. +// +// This program 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 this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// }}} +#include "ucoolib/common.hh" +#include "ucoolib/hal/gpio/gpio.hh" + +/// Control LCD. +class LCD +{ + public: + static const int x_max = 320, y_max = 240; + public: + /// Constructor. + LCD (); + /// Turn display on. + void on (); + /// Turn display off. + void off (); + /// Clear the whole screen with the same color (default to black). + void clear (uint16_t color = 0); + /// Fill screen with colors. + void rainbow (); + /// Convert from RGB to hardware color format. + static inline uint16_t color (uint8_t r, uint8_t g, uint8_t b) + { + return (r >> 3 << 11) | (g >> 2 << 5) | (b >> 3); + } + private: + void set_cursor (int x, int y); + void write_index (uint16_t index); + void write_data (uint16_t data); + uint16_t read_data (); + void write_reg (uint16_t index, uint16_t data); + uint16_t read_reg (uint16_t index); + private: + ucoo::Gpio cs_, rs_, wr_, rd_, reset_, bl_; +}; + +#endif // lcd_hh -- cgit v1.2.3