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/**
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* Copyright (c) 2007 Colony Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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**/
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/**
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* @file lcd.c
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* @brief LCD
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*
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* Implementation of functions for using the LCD.
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*
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* @author Colony Project, CMU Robotics Club
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**/
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#include <avr/io.h> |
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#include <avr/pgmspace.h> |
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#include "lcd.h" |
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#include "time.h" |
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//LCD defines
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#define RST _BV(4) // pd4 (GPIO) |
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#define SCE _BV(0) // pb0 (~SS) |
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#define D_C _BV(5) // pd5 (GPIO?) |
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#define SDI _BV(2) // pb2 (MOSI) |
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#define SCK _BV(1) // pb1 (SCK) |
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#define LCDPORT PORTB
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#define LCDDDR DDRB
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#define LCDRESETPORT PORTD
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#define LCDRESETDDR DDRD
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void lcd_putbyte(unsigned char b); |
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//**************************************Old shit below!*****************
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/*
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FontLookup - a lookup table for all characters
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*/
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static const unsigned char FontLookup [][5] PROGMEM = |
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{ |
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{ 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp |
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{ 0x00, 0x00, 0x5f, 0x00, 0x00 }, // ! |
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{ 0x00, 0x07, 0x00, 0x07, 0x00 }, // " |
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{ 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // # |
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{ 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $ |
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{ 0x23, 0x13, 0x08, 0x64, 0x62 }, // % |
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{ 0x36, 0x49, 0x55, 0x22, 0x50 }, // & |
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{ 0x00, 0x05, 0x03, 0x00, 0x00 }, // ' |
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{ 0x00, 0x1c, 0x22, 0x41, 0x00 }, // ( |
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{ 0x00, 0x41, 0x22, 0x1c, 0x00 }, // ) |
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{ 0x14, 0x08, 0x3E, 0x08, 0x14 }, // * |
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{ 0x08, 0x08, 0x3E, 0x08, 0x08 }, // + |
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{ 0x00, 0x00, 0x50, 0x30, 0x00 }, // , |
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{ 0x10, 0x10, 0x10, 0x10, 0x10 }, // - |
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{ 0x00, 0x60, 0x60, 0x00, 0x00 }, // . |
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{ 0x20, 0x10, 0x08, 0x04, 0x02 }, // / |
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{ 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0 |
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{ 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1 |
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{ 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2 |
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{ 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3 |
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{ 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4 |
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{ 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5 |
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{ 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6 |
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{ 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7 |
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{ 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8 |
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{ 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9 |
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{ 0x00, 0x36, 0x36, 0x00, 0x00 }, // : |
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{ 0x00, 0x56, 0x36, 0x00, 0x00 }, // ; |
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{ 0x08, 0x14, 0x22, 0x41, 0x00 }, // < |
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{ 0x14, 0x14, 0x14, 0x14, 0x14 }, // = |
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{ 0x00, 0x41, 0x22, 0x14, 0x08 }, // > |
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{ 0x02, 0x01, 0x51, 0x09, 0x06 }, // ? |
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{ 0x32, 0x49, 0x59, 0x51, 0x3E }, // @ |
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{ 0x7E, 0x11, 0x11, 0x11, 0x7E }, // A |
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{ 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B |
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{ 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C |
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{ 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D |
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{ 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E |
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{ 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F |
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{ 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G |
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{ 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H |
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{ 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I |
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{ 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J |
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{ 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K |
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{ 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L |
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{ 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M |
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{ 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N |
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{ 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O |
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{ 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P |
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{ 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q |
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{ 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R |
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{ 0x46, 0x49, 0x49, 0x49, 0x31 }, // S |
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{ 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T |
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{ 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U |
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{ 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V |
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{ 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W |
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{ 0x63, 0x14, 0x08, 0x14, 0x63 }, // X |
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{ 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y |
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{ 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z |
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{ 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [ |
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{ 0x02, 0x04, 0x08, 0x10, 0x20 }, // backslash |
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{ 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ] |
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{ 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^ |
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{ 0x40, 0x40, 0x40, 0x40, 0x40 }, // _ |
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{ 0x00, 0x01, 0x02, 0x04, 0x00 }, // ' |
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{ 0x20, 0x54, 0x54, 0x54, 0x78 }, // a |
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{ 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b |
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{ 0x38, 0x44, 0x44, 0x44, 0x20 }, // c |
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{ 0x38, 0x44, 0x44, 0x48, 0x7F }, // d |
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{ 0x38, 0x54, 0x54, 0x54, 0x18 }, // e |
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{ 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f |
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{ 0x0C, 0x52, 0x52, 0x52, 0x3E }, // g |
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{ 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h |
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{ 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i |
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{ 0x20, 0x40, 0x44, 0x3D, 0x00 }, // j |
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{ 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k |
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{ 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l |
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{ 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m |
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{ 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n |
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{ 0x38, 0x44, 0x44, 0x44, 0x38 }, // o |
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{ 0x7C, 0x14, 0x14, 0x14, 0x08 }, // p |
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{ 0x08, 0x14, 0x14, 0x18, 0x7C }, // q |
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{ 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r |
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{ 0x48, 0x54, 0x54, 0x54, 0x20 }, // s |
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{ 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t |
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{ 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u |
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{ 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v |
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{ 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w |
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{ 0x44, 0x28, 0x10, 0x28, 0x44 }, // x |
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{ 0x0C, 0x50, 0x50, 0x50, 0x3C }, // y |
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{ 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z |
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{ 0x00, 0x08, 0x36, 0x41, 0x41 }, // { |
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{ 0x00, 0x00, 0x7F, 0x00, 0x00 }, // | |
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{ 0x41, 0x41, 0x36, 0x08, 0x00 }, // } |
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{ 0x02, 0x01, 0x01, 0x02, 0x01 }, // ~ |
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{ 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // del |
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}; |
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/**
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* @defgroup lcd LCD
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* @brief Functions for the LCD
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* Functions for writing to the LCD.
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* All functions may be found in lcd.h.
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*
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* @{
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**/
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/**
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* Initializes the LCD. Must be called before any other
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* LCD functions.
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**/
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void lcd_init(void) { |
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LCDDDR |= (SCE | SDI | SCK); |
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LCDRESETDDR |= (RST|D_C); |
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LCDPORT &= ~( SCE | SDI | SCK); |
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LCDRESETPORT &=~(D_C); |
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SPCR |= 0x50;//0b01010000; // no SPI int, SPI en, Master, sample on rising edge, fosc/2 |
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SPSR |= 0x01; // a continuation of the above |
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LCDRESETPORT |= RST; |
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delay_ms(10);
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LCDRESETPORT &= (~RST); |
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delay_ms(100);
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LCDRESETPORT |= RST; |
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lcd_putbyte( 0x21 ); // LCD Extended Commands. |
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lcd_putbyte( 0xC8 ); // Set LCD Vop (Contrast). |
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lcd_putbyte( 0x06 ); // Set Temp coefficent. |
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lcd_putbyte( 0x13 ); // LCD bias mode 1:48. |
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lcd_putbyte( 0x20 ); // LCD Standard Commands, Horizontal addressing mode. |
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lcd_putbyte( 0x0C ); // LCD in normal mode. |
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LCDRESETPORT |= D_C; //put it in init instead of main
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lcd_clear_screen(); |
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} |
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/**
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* Clears the LCD screen. lcd_init must be called first.
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*
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* @see lcd_init
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**/
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void lcd_clear_screen( void ) { |
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int i;
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for (i = 0; i < 504; i++) |
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lcd_putbyte(0x0);
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lcd_gotoxy(0,0); |
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} |
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/**
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* Prints a character on the LCD screen. lcd_init
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* must be called before this function may be used.
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*
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* Note: pgm_read_byte() is untested
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*
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* @param c the character to print
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*
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* @see lcd_init
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**/
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void lcd_putc(char c) { |
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int i;
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for (i = 0; i < 5; i++) |
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lcd_putbyte(pgm_read_byte(&(FontLookup[c-32][i])));
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lcd_putbyte(0);
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} |
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/*
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print an entire string to the lcd
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*/
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void lcd_puts(char *s) { |
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char *t = s;
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while (*t != 0) { |
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lcd_putc(*t); |
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t++; |
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} |
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} |
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/*
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go to coordinate x, y
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y: vertically - 1 char
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x: horizontally - 1 pixel
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multiply x by 6 if want to move 1 entire character
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origin (0,0) is at top left corner of lcd screen
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*/
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/**
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* Move the current cursor position to the one specified.
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* lcd_init must be called before this function may be used.
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*
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* @param x The x coordinate of the new position
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* @param y The y coordinate of the new position
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*
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* @see lcd_init
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**/
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void lcd_gotoxy(int x, int y) { |
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LCDRESETPORT &= ~(D_C); |
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lcd_putbyte(0x40 | (y & 0x07)); |
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lcd_putbyte(0x80 | (x & 0x7f)); |
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LCDRESETPORT |= D_C; |
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} |
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/*
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prints an int to the lcd
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code adapted from Chris Efstathiou's code (hendrix@otenet.gr)
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*/
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/**
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* Print an integer to the LCD screen.
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* lcd_init must be called before this function may be used.
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*
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* @param value the integer to print
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*
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* @see lcd_init
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**/
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void lcd_puti(int value ) { |
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unsigned char lcd_data[6]={'0','0','0','0','0','0' }, position=sizeof(lcd_data), radix=10; |
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/* convert int to ascii */
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if(value<0) { |
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lcd_putc('-');
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value=-value; |
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} |
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do {
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position--; |
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*(lcd_data+position)=(value%radix)+'0';
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value/=radix; |
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} while(value);
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/* start displaying the number */
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for(;position<=(sizeof(lcd_data)-1);position++) |
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lcd_putc(lcd_data[position]); |
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return;
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} |
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/** @} **/ //end defgroup |
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void lcd_putbyte(unsigned char b) { |
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SPDR = b; |
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while (!(SPSR & 0x80)); /* Wait until SPI transaction is complete */ |
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} |