LCD implementation of our project.
Dependencies: mbed mbed-rtos MLX90614
st7565LCD.cpp
- Committer:
- ovidiup13
- Date:
- 2015-06-03
- Revision:
- 10:97389d774ae1
- Parent:
- 0:1e597b0f8b3b
File content as of revision 10:97389d774ae1:
/* $Id:$ ST7565 LCD library! Copyright (C) 2010 Limor Fried, Adafruit Industries 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 Street, Fifth Floor, Boston, MA 02110-1301 USA // some of this code was written by <cstone@pobox.com> originally; it is in the public domain. ******the library is modified for mbed********** http://www.adafruit.com/products/250 *!function drawbitmap(); is left undone!* 2014/03/18 by imachooon mailto: imachooon@gmail.com ************************************************ */ #include "st7565LCD.h" #include "st7565LCDfont.h" #define ST7565_STARTBYTES 1 uint8_t is_reversed = 0; // a handy reference to where the pages are on the screen const uint8_t pagemap[] = { 3, 2, 1, 0, 7, 6, 5, 4 }; // a 5x7 font table extern const uint8_t font[]; // the memory buffer for the LCD uint8_t st7565_buffer[1024] = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x7, 0xF, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7F, 0x3F, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1F, 0x3F, 0x70, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6, 0x6, 0x0, 0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0xF, 0x7, 0x7, 0x7, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3E, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xF, 0x3F, 0x70, 0x60, 0x60, 0x60, 0x60, 0x30, 0x7F, 0x3F, 0x0, 0x0, 0x1F, 0x3F, 0x70, 0x60, 0x60, 0x60, 0x60, 0x39, 0xFF, 0xFF, 0x0, 0x6, 0x1F, 0x39, 0x60, 0x60, 0x60, 0x60, 0x30, 0x3F, 0x7F, 0x0, 0x0, 0x60, 0xFF, 0xFF, 0x60, 0x60, 0x0, 0x7F, 0x7F, 0x70, 0x60, 0x60, 0x40, 0x0, 0x7F, 0x7F, 0x0, 0x0, 0x0, 0x0, 0x7F, 0x7F, 0x0, 0x0, 0x0, 0x7F, 0x7F, 0x0, 0x0, 0x60, 0xFF, 0xFF, 0x60, 0x60, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0xF8, 0xFC, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xEF, 0xE7, 0xE7, 0xE3, 0xF3, 0xF9, 0xFF, 0xFF, 0xFF, 0xF7, 0x7, 0x1F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x3F, 0x3F, 0x1F, 0xF, 0x7, 0x3, 0x0, 0x0, 0x0, 0xC0, 0xE0, 0x60, 0x20, 0x20, 0x60, 0xE0, 0xE0, 0xE0, 0x0, 0x0, 0x80, 0xC0, 0xE0, 0x60, 0x20, 0x60, 0x60, 0xE0, 0xE0, 0xE0, 0x0, 0x0, 0x80, 0xC0, 0x60, 0x60, 0x20, 0x60, 0x60, 0xE0, 0xE0, 0x0, 0x0, 0x0, 0xE0, 0xE0, 0x0, 0x0, 0x0, 0xE0, 0xE0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0xE0, 0x60, 0x60, 0x60, 0x60, 0xE0, 0x80, 0x0, 0x0, 0x0, 0xE0, 0xE0, 0x0, 0x0, 0x0, 0xE0, 0xE0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x7, 0x1F, 0x9F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFD, 0xF1, 0xE3, 0xE3, 0xCF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xFC, 0x7F, 0x3F, 0x3F, 0x3F, 0x3F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFC, 0xF0, 0xE0, 0x80, 0x0, 0x0, 0x0, 0xC, 0x1C, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7F, 0x7F, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7, 0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1C, 0xC, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFE, 0xFE, 0xFE, 0xFC, 0xF8, 0xF8, 0xF0, 0xFE, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x1F, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xFF, 0xFF, 0x0, 0x0, 0x0, 0xFF, 0xFF, 0xE0, 0xC0, 0xC0, 0xC0, 0xFF, 0x7F, 0x0, 0x0, 0x1E, 0x7F, 0xE1, 0xC0, 0xC0, 0xC0, 0xC0, 0x61, 0xFF, 0xFF, 0x0, 0x0, 0xFE, 0xFF, 0x1, 0x0, 0x0, 0x0, 0xFF, 0xFF, 0x0, 0x0, 0x21, 0xF9, 0xF8, 0xDC, 0xCC, 0xCF, 0x7, 0x0, 0xC0, 0xFF, 0xFF, 0xC0, 0x80, 0x0, 0xFF, 0xFF, 0xC0, 0xC0, 0x80, 0x0, 0x0, 0xFF, 0xFF, 0x0, 0x0, 0x1F, 0x7F, 0xF9, 0xC8, 0xC8, 0xC8, 0xC8, 0x79, 0x39, 0x0, 0x0, 0x71, 0xF9, 0xD8, 0xCC, 0xCE, 0x47, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0xC0, 0xE0, 0xF0, 0xF8, 0xF8, 0xFC, 0xFC, 0xFC, 0xFC, 0xF8, 0xF0, 0xC0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xC0, 0xC0, 0x0, 0x0, 0x0, 0xC0, 0xC0, 0x0, 0x0, 0x0, 0x0, 0xC0, 0xC0, 0x0, 0x0, 0x0, 0x80, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0x80, 0xC0, 0xC0, 0x0, 0x0, 0x0, 0x80, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0x80, 0x0, 0x0, 0x80, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0x0, 0x0, 0x0, 0xC0, 0xC0, 0x0, 0x0, 0x0, 0xC0, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0xC0, 0xC0, 0x0, 0x0, 0x0, 0x80, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0x80, 0x80, 0x0, 0x0, 0x80, 0xC0, 0xC0, 0xC0, 0xC0, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, }; // reduces how much is refreshed, which speeds it up! // originally derived from Steve Evans/JCW's mod but cleaned up and // optimized #define enablePartialUpdate #ifdef enablePartialUpdate static uint8_t xUpdateMin, xUpdateMax, yUpdateMin, yUpdateMax; #endif static void updateBoundingBox(uint8_t xmin, uint8_t ymin, uint8_t xmax, uint8_t ymax) { #ifdef enablePartialUpdate if (xmin < xUpdateMin) xUpdateMin = xmin; if (xmax > xUpdateMax) xUpdateMax = xmax; if (ymin < yUpdateMin) yUpdateMin = ymin; if (ymax > yUpdateMax) yUpdateMax = ymax; #endif } /* void ST7565::drawbitmap(uint8_t x, uint8_t y, const uint8_t *bitmap, uint8_t w, uint8_t h, uint8_t color) { for (uint8_t i=0; i<h; i++) { for (uint8_t j=0; j<w; j++ ) { if (pgm_read_byte(bitmap + j + (j/8)*w) & _BV(j%8)) { my_setpixel(x+j, y+i, color); } } } updateBoundingBox(x, y, x+w, y+h); } */ void ST7565::drawstring(uint8_t x, uint8_t line, char *c) { while (*c != '\0') { drawchar(x, line, *c); *c++; x += 6; // 6 pixels wide if (x + 6 >= LCDWIDTH) { x = 0; // ran out of this line line++; } if (line >= (LCDHEIGHT/8)) return; // ran out of space :( } } void ST7565::drawchar(uint8_t x, uint8_t line, char c) { for (uint8_t i =0; i<5; i++ ) { *(st7565_buffer + x + line*128) = *(font + (c*5) + i); x++; } updateBoundingBox(x, line*8, x+5, line*8+8); //only updates relevant area of LCD } // bresenham's algorithm - thx wikpedia void ST7565::drawline(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t color) { uint8_t steep = abs(y1 - y0) > abs(x1 - x0); if (steep) { swap(x0, y0); swap(x1, y1); } if (x0 > x1) { swap(x0, x1); swap(y0, y1); } // much faster to put the test here, since we've already sorted the points updateBoundingBox(x0, y0, x1, y1); uint8_t dx, dy; dx = x1 - x0; dy = abs(y1 - y0); int8_t err = dx / 2; int8_t ystep; if (y0 < y1) { ystep = 1; } else { ystep = -1; } for (; x0<=x1; x0++) { if (steep) { my_setpixel(y0, x0, color); } else { my_setpixel(x0, y0, color); } err -= dy; if (err < 0) { y0 += ystep; err += dx; } } } // filled rectangle void ST7565::fillrect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t color) { // stupidest version - just pixels - but fast with internal buffer! for (uint8_t i=x; i<x+w; i++) { for (uint8_t j=y; j<y+h; j++) { my_setpixel(i, j, color); } } updateBoundingBox(x, y, x+w, y+h); } // draw a rectangle void ST7565::drawrect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t color) { // stupidest version - just pixels - but fast with internal buffer! for (uint8_t i=x; i<x+w; i++) { my_setpixel(i, y, color); my_setpixel(i, y+h-1, color); } for (uint8_t i=y; i<y+h; i++) { my_setpixel(x, i, color); my_setpixel(x+w-1, i, color); } updateBoundingBox(x, y, x+w, y+h); } // draw a circle outline void ST7565::drawcircle(uint8_t x0, uint8_t y0, uint8_t r, uint8_t color) { updateBoundingBox(x0-r, y0-r, x0+r, y0+r); int8_t f = 1 - r; int8_t ddF_x = 1; int8_t ddF_y = -2 * r; int8_t x = 0; int8_t y = r; my_setpixel(x0, y0+r, color); my_setpixel(x0, y0-r, color); my_setpixel(x0+r, y0, color); my_setpixel(x0-r, y0, color); while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; my_setpixel(x0 + x, y0 + y, color); my_setpixel(x0 - x, y0 + y, color); my_setpixel(x0 + x, y0 - y, color); my_setpixel(x0 - x, y0 - y, color); my_setpixel(x0 + y, y0 + x, color); my_setpixel(x0 - y, y0 + x, color); my_setpixel(x0 + y, y0 - x, color); my_setpixel(x0 - y, y0 - x, color); } } void ST7565::fillcircle(uint8_t x0, uint8_t y0, uint8_t r, uint8_t color) { updateBoundingBox(x0-r, y0-r, x0+r, y0+r); int8_t f = 1 - r; int8_t ddF_x = 1; int8_t ddF_y = -2 * r; int8_t x = 0; int8_t y = r; for (uint8_t i=y0-r; i<=y0+r; i++) { my_setpixel(x0, i, color); } while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; for (uint8_t i=y0-y; i<=y0+y; i++) { my_setpixel(x0+x, i, color); my_setpixel(x0-x, i, color); } for (uint8_t i=y0-x; i<=y0+x; i++) { my_setpixel(x0+y, i, color); my_setpixel(x0-y, i, color); } } } void ST7565::my_setpixel(uint8_t x, uint8_t y, uint8_t color) { if ((x >= LCDWIDTH) || (y >= LCDHEIGHT)) return; // x is which column if (color) st7565_buffer[x+ (y/8)*128] |= _BV(7-(y%8)); else st7565_buffer[x+ (y/8)*128] &= _nBV(7-(y%8)); } // the most basic function, set a single pixel void ST7565::setpixel(uint8_t x, uint8_t y, uint8_t color) { if ((x >= LCDWIDTH) || (y >= LCDHEIGHT)) return; // x is which column if (color) st7565_buffer[x+ (y/8)*128] |= _BV(7-(y%8)); else st7565_buffer[x+ (y/8)*128] &= _nBV(7-(y%8)); updateBoundingBox(x,y,x,y); } // the most basic function, get a single pixel uint8_t ST7565::getpixel(uint8_t x, uint8_t y) { if ((x >= LCDWIDTH) || (y >= LCDHEIGHT)) return 0; return (st7565_buffer[x+ (y/8)*128] >> (7-(y%8))) & 0x1; } ST7565::ST7565(PinName mosi, PinName sclk, PinName cs, PinName rst, PinName a0) // set pin directions : _spi(mosi, NC, sclk), _cs(cs), _rst(rst), _a0(a0) { _spi.format(8, 0); _spi.frequency(1000000); } void ST7565::st7565_init(void) { wait_ms(100); _rst = 0; wait_ms(100); _rst = 1; // LCD bias select st7565_command(CMD_SET_BIAS_7); // ADC select st7565_command(CMD_SET_ADC_NORMAL); // SHL select st7565_command(CMD_SET_COM_NORMAL); // turn on voltage converter (VC=1, VR=0, VF=0) st7565_command(CMD_SET_POWER_CONTROL | 0x4); // wait for 50% rising wait_ms(50); // turn on voltage regulator (VC=1, VR=1, VF=0) st7565_command(CMD_SET_POWER_CONTROL | 0x6); // wait >=50ms wait_ms(20); // turn on voltage follower (VC=1, VR=1, VF=1) st7565_command(CMD_SET_POWER_CONTROL | 0x7); // wait wait_ms(10); // set lcd operating voltage (regulator resistor, ref voltage resistor) st7565_command(CMD_SET_RESISTOR_RATIO | 0x4); wait_ms(10); // st7565_set_brightness(INITIAL_CONTRAST); // set up a bounding box for screen updates updateBoundingBox(0, 0, LCDWIDTH-1, LCDHEIGHT-1); st7565_command(CMD_DISPLAY_ON); st7565_command(CMD_SET_ALLPTS_NORMAL); // reference voltage resistor st7565_command(CMD_SET_VOLUME_FIRST); wait_ms(10); st7565_command(CMD_SET_VOLUME_SECOND); wait_ms(10); // Initial display line ( = 0) st7565_command(CMD_SET_DISP_START_LINE); // Initial page address ( = 0) st7565_command(CMD_SET_PAGE); st7565_command(CMD_SET_COLUMN_UPPER); st7565_command(CMD_SET_COLUMN_LOWER); } inline void ST7565::spiwrite(uint8_t c) { _spi.write(c); } void ST7565::st7565_command(uint8_t c) { _cs = 0; _a0 = 0; _spi.write(c); _cs = 1; } void ST7565::st7565_data(uint8_t c) { _cs = 0; _a0 = 1; _spi.write(c); _cs = 1; } void ST7565::st7565_set_brightness(uint8_t val) { st7565_command(CMD_SET_VOLUME_FIRST); st7565_command(CMD_SET_VOLUME_SECOND | (val & 0x3f)); } void ST7565::begin(uint8_t contrast){ st7565_init(); st7565_command(CMD_DISPLAY_ON); st7565_command(CMD_SET_ALLPTS_NORMAL); st7565_set_brightness(contrast); } void ST7565::display(void) { uint8_t col, maxcol, p; for(p = 0; p < 8; p++) { #ifdef enablePartialUpdate // check if this page is part of update if ( yUpdateMin >= ((p+1)*8) ) { continue; // nope, skip it! } if (yUpdateMax < p*8) { break; } #endif st7565_command(CMD_SET_PAGE | pagemap[p]); #ifdef enablePartialUpdate col = xUpdateMin; maxcol = xUpdateMax; #else // start at the beginning of the row col = 0; maxcol = LCDWIDTH-1; #endif st7565_command(CMD_SET_COLUMN_LOWER | ((col+ST7565_STARTBYTES) & 0xf)); st7565_command(CMD_SET_COLUMN_UPPER | (((col+ST7565_STARTBYTES) >> 4) & 0x0F)); st7565_command(CMD_RMW); for(; col <= maxcol; col++) { st7565_data(st7565_buffer[(128*p)+col]); } } #ifdef enablePartialUpdate xUpdateMin = LCDWIDTH - 1; xUpdateMax = 0; yUpdateMin = LCDHEIGHT-1; yUpdateMax = 0; #endif } // clear everything void ST7565::clear(void) { memset(st7565_buffer, 0, 1024); updateBoundingBox(0, 0, LCDWIDTH-1, LCDHEIGHT-1); } // this doesnt touch the buffer, just clears the display RAM - might be handy void ST7565::clear_display(void) { uint8_t p, c; for(p = 0; p < 8; p++) { st7565_command(CMD_SET_PAGE | p); for(c = 0; c < 129; c++) { st7565_command(CMD_SET_COLUMN_LOWER | (c & 0xf)); st7565_command(CMD_SET_COLUMN_UPPER | ((c >> 4) & 0xf)); st7565_data(0x0); } } } //additional function to set a bit uint8_t ST7565::_BV(uint8_t bit) { return 1 << bit; } uint8_t ST7565::_nBV(uint8_t bit) { return 0 << bit; }