C12832 LCD with generic interface
Dependents: SongsAndLights I2CSong app-shield-all LCD_Games ... more
Fork of C12832_lcd_fork by
This is derived from the great work done Peter Dresche. I simply removed the MCU specific code, and added a pinmap at the top level, so that this component can we wired up any way.
Revision 15:67dfa5550b73, committed 2014-01-30
- Comitter:
- chris
- Date:
- Thu Jan 30 17:16:04 2014 +0000
- Parent:
- 14:b834d587bf45
- Child:
- 16:7de323fa46fe
- Commit message:
- think this is anothe fork
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832.cpp Thu Jan 30 17:16:04 2014 +0000 @@ -0,0 +1,589 @@ +/* mbed library for the mbed Lab Board 128*32 pixel LCD + * use C12832 controller + * Copyright (c) 2012 Peter Drescher - DC2PD + * Released under the MIT License: http://mbed.org/license/mit + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +// 13.10.12 initial design +// 25.10.12 add autorefresh of screen +// 25.10.12 add standart font +// 20.12.12 add bitmap graphics + +// optional defines : +// #define debug_lcd 1 + +#include "C12832.h" +#include "mbed.h" +#include "stdio.h" +#include "Small_7.h" + +#define BPP 1 // Bits per pixel + + +C12832_LCD::C12832_LCD(PinName mosi, PinName sck, PinName reset, PinName a0, PinName ncs, const char* name) + : _spi(mosi,NC,sck),_reset(reset),_A0(a0),_CS(ncs),GraphicsDisplay(name) +{ + orientation = 1; + draw_mode = NORMAL; + char_x = 0; + lcd_reset(); +} + + +int C12832_LCD::width() +{ + if (orientation == 0 || orientation == 2) return 32; + else return 128; +} + +int C12832_LCD::height() +{ + if (orientation == 0 || orientation == 2) return 128; + else return 32; +} + + +/*void C12832_LCD::set_orientation(unsigned int o) +{ + orientation = o; + switch (o) { + case (0): + wr_cmd(0xA0); + wr_cmd(0xC0); + break; + case (1): + wr_cmd(0xA0); + wr_cmd(0xC8); + break; + case (2): + wr_cmd(0xA1); + wr_cmd(0xC8); + break; + case (3): + wr_cmd(0xA1); + wr_cmd(0xC0); + break; + } +} + +*/ + +void C12832_LCD::invert(unsigned int o) +{ + if(o == 0) wr_cmd(0xA6); + else wr_cmd(0xA7); +} + + +void C12832_LCD::set_contrast(unsigned int o) +{ + contrast = o; + wr_cmd(0x81); // set volume + wr_cmd(o & 0x3F); +} + +unsigned int C12832_LCD::get_contrast(void) +{ + return(contrast); +} + + +// write command to lcd controller + +void C12832_LCD::wr_cmd(unsigned char cmd) +{ + _A0 = 0; + _CS = 0; + _spi.write(cmd); + _CS = 1; +} + +// write data to lcd controller + +void C12832_LCD::wr_dat(unsigned char dat) +{ + _A0 = 1; + _CS = 0; + _spi.write(dat); + _CS = 1; +} + +// reset and init the lcd controller + +void C12832_LCD::lcd_reset() +{ + + _spi.format(8,3); // 8 bit spi mode 3 + _spi.frequency(20000000); // 19,2 Mhz SPI clock + _A0 = 0; + _CS = 1; + _reset = 0; // display reset + wait_us(50); + _reset = 1; // end reset + wait_ms(5); + + /* Start Initial Sequence ----------------------------------------------------*/ + + wr_cmd(0xAE); // display off + wr_cmd(0xA2); // bias voltage + + wr_cmd(0xA0); + wr_cmd(0xC8); // colum normal + + wr_cmd(0x22); // voltage resistor ratio + wr_cmd(0x2F); // power on + //wr_cmd(0xA4); // LCD display ram + wr_cmd(0x40); // start line = 0 + wr_cmd(0xAF); // display ON + + wr_cmd(0x81); // set contrast + wr_cmd(0x17); // set contrast + + wr_cmd(0xA6); // display normal + + + // clear and update LCD + memset(buffer,0x00,512); // clear display buffer + copy_to_lcd(); + auto_up = 1; // switch on auto update + // dont do this by default. Make the user call + //claim(stdout); // redirekt printf to lcd + locate(0,0); + set_font((unsigned char*)Small_7); // standart font +} + +// set one pixel in buffer + +void C12832_LCD::pixel(int x, int y, int color) +{ + // first check parameter + if(x > 128 || y > 32 || x < 0 || y < 0) return; + + if(draw_mode == NORMAL) { + if(color == 0) + buffer[x + ((y/8) * 128)] &= ~(1 << (y%8)); // erase pixel + else + buffer[x + ((y/8) * 128)] |= (1 << (y%8)); // set pixel + } else { // XOR mode + if(color == 1) + buffer[x + ((y/8) * 128)] ^= (1 << (y%8)); // xor pixel + } +} + +// update lcd + +void C12832_LCD::copy_to_lcd(void) +{ + + int i=0; + + //page 0 + wr_cmd(0x00); // set column low nibble 0 + wr_cmd(0x10); // set column hi nibble 0 + wr_cmd(0xB0); // set page address 0 + _A0 = 1; + for(i=0; i<128; i++) { + wr_dat(buffer[i]); + } + + // page 1 + wr_cmd(0x00); // set column low nibble 0 + wr_cmd(0x10); // set column hi nibble 0 + wr_cmd(0xB1); // set page address 1 + _A0 = 1; + for(i=128; i<256; i++) { + wr_dat(buffer[i]); + } + + //page 2 + wr_cmd(0x00); // set column low nibble 0 + wr_cmd(0x10); // set column hi nibble 0 + wr_cmd(0xB2); // set page address 2 + _A0 = 1; + for(i=256; i<384; i++) { + wr_dat(buffer[i]); + } + + //page 3 + wr_cmd(0x00); // set column low nibble 0 + wr_cmd(0x10); // set column hi nibble 0 + wr_cmd(0xB3); // set page address 3 + _A0 = 1; + + _CS = 0; + + for(i=384; i<512; i++) { + wr_dat(buffer[i]); + } + +} + +void C12832_LCD::cls(void) +{ + memset(buffer,0x00,512); // clear display buffer + copy_to_lcd(); +} + + +void C12832_LCD::line(int x0, int y0, int x1, int y1, int color) +{ + int dx = 0, dy = 0; + int dx_sym = 0, dy_sym = 0; + int dx_x2 = 0, dy_x2 = 0; + int di = 0; + + dx = x1-x0; + dy = y1-y0; + + // if (dx == 0) { /* vertical line */ + // if (y1 > y0) vline(x0,y0,y1,color); + // else vline(x0,y1,y0,color); + // return; + // } + + if (dx > 0) { + dx_sym = 1; + } else { + dx_sym = -1; + } + // if (dy == 0) { /* horizontal line */ + // if (x1 > x0) hline(x0,x1,y0,color); + // else hline(x1,x0,y0,color); + // return; + // } + + if (dy > 0) { + dy_sym = 1; + } else { + dy_sym = -1; + } + + dx = dx_sym*dx; + dy = dy_sym*dy; + + dx_x2 = dx*2; + dy_x2 = dy*2; + + if (dx >= dy) { + di = dy_x2 - dx; + while (x0 != x1) { + + pixel(x0, y0, color); + x0 += dx_sym; + if (di<0) { + di += dy_x2; + } else { + di += dy_x2 - dx_x2; + y0 += dy_sym; + } + } + pixel(x0, y0, color); + } else { + di = dx_x2 - dy; + while (y0 != y1) { + pixel(x0, y0, color); + y0 += dy_sym; + if (di < 0) { + di += dx_x2; + } else { + di += dx_x2 - dy_x2; + x0 += dx_sym; + } + } + pixel(x0, y0, color); + } + if(auto_up) copy_to_lcd(); +} + +void C12832_LCD::rect(int x0, int y0, int x1, int y1, int color) +{ + + if (x1 > x0) line(x0,y0,x1,y0,color); + else line(x1,y0,x0,y0,color); + + if (y1 > y0) line(x0,y0,x0,y1,color); + else line(x0,y1,x0,y0,color); + + if (x1 > x0) line(x0,y1,x1,y1,color); + else line(x1,y1,x0,y1,color); + + if (y1 > y0) line(x1,y0,x1,y1,color); + else line(x1,y1,x1,y0,color); + + if(auto_up) copy_to_lcd(); +} + +void C12832_LCD::fillrect(int x0, int y0, int x1, int y1, int color) +{ + int l,c,i; + if(x0 > x1) { + i = x0; + x0 = x1; + x1 = i; + } + + if(y0 > y1) { + i = y0; + y0 = y1; + y1 = i; + } + + for(l = x0; l<= x1; l ++) { + for(c = y0; c<= y1; c++) { + pixel(l,c,color); + } + } + if(auto_up) copy_to_lcd(); +} + + + +void C12832_LCD::circle(int x0, int y0, int r, int color) +{ + + int draw_x0, draw_y0; + int draw_x1, draw_y1; + int draw_x2, draw_y2; + int draw_x3, draw_y3; + int draw_x4, draw_y4; + int draw_x5, draw_y5; + int draw_x6, draw_y6; + int draw_x7, draw_y7; + int xx, yy; + int di; + //WindowMax(); + if (r == 0) { /* no radius */ + return; + } + + draw_x0 = draw_x1 = x0; + draw_y0 = draw_y1 = y0 + r; + if (draw_y0 < height()) { + pixel(draw_x0, draw_y0, color); /* 90 degree */ + } + + draw_x2 = draw_x3 = x0; + draw_y2 = draw_y3 = y0 - r; + if (draw_y2 >= 0) { + pixel(draw_x2, draw_y2, color); /* 270 degree */ + } + + draw_x4 = draw_x6 = x0 + r; + draw_y4 = draw_y6 = y0; + if (draw_x4 < width()) { + pixel(draw_x4, draw_y4, color); /* 0 degree */ + } + + draw_x5 = draw_x7 = x0 - r; + draw_y5 = draw_y7 = y0; + if (draw_x5>=0) { + pixel(draw_x5, draw_y5, color); /* 180 degree */ + } + + if (r == 1) { + return; + } + + di = 3 - 2*r; + xx = 0; + yy = r; + while (xx < yy) { + + if (di < 0) { + di += 4*xx + 6; + } else { + di += 4*(xx - yy) + 10; + yy--; + draw_y0--; + draw_y1--; + draw_y2++; + draw_y3++; + draw_x4--; + draw_x5++; + draw_x6--; + draw_x7++; + } + xx++; + draw_x0++; + draw_x1--; + draw_x2++; + draw_x3--; + draw_y4++; + draw_y5++; + draw_y6--; + draw_y7--; + + if ( (draw_x0 <= width()) && (draw_y0>=0) ) { + pixel(draw_x0, draw_y0, color); + } + + if ( (draw_x1 >= 0) && (draw_y1 >= 0) ) { + pixel(draw_x1, draw_y1, color); + } + + if ( (draw_x2 <= width()) && (draw_y2 <= height()) ) { + pixel(draw_x2, draw_y2, color); + } + + if ( (draw_x3 >=0 ) && (draw_y3 <= height()) ) { + pixel(draw_x3, draw_y3, color); + } + + if ( (draw_x4 <= width()) && (draw_y4 >= 0) ) { + pixel(draw_x4, draw_y4, color); + } + + if ( (draw_x5 >= 0) && (draw_y5 >= 0) ) { + pixel(draw_x5, draw_y5, color); + } + if ( (draw_x6 <=width()) && (draw_y6 <= height()) ) { + pixel(draw_x6, draw_y6, color); + } + if ( (draw_x7 >= 0) && (draw_y7 <= height()) ) { + pixel(draw_x7, draw_y7, color); + } + } + if(auto_up) copy_to_lcd(); +} + +void C12832_LCD::fillcircle(int x, int y, int r, int color) +{ + int i,up; + up = auto_up; + auto_up = 0; // off + for (i = 0; i <= r; i++) + circle(x,y,i,color); + auto_up = up; + if(auto_up) copy_to_lcd(); +} + +void C12832_LCD::setmode(int mode) +{ + draw_mode = mode; +} + +void C12832_LCD::locate(int x, int y) +{ + char_x = x; + char_y = y; +} + + + +int C12832_LCD::columns() +{ + return width() / font[1]; +} + + + +int C12832_LCD::rows() +{ + return height() / font[2]; +} + + + +int C12832_LCD::_putc(int value) +{ + if (value == '\n') { // new line + char_x = 0; + char_y = char_y + font[2]; + if (char_y >= height() - font[2]) { + char_y = 0; + } + } else { + character(char_x, char_y, value); + if(auto_up) copy_to_lcd(); + } + return value; +} + +void C12832_LCD::character(int x, int y, int c) +{ + unsigned int hor,vert,offset,bpl,j,i,b; + unsigned char* zeichen; + unsigned char z,w; + + if ((c < 31) || (c > 127)) return; // test char range + + // read font parameter from start of array + offset = font[0]; // bytes / char + hor = font[1]; // get hor size of font + vert = font[2]; // get vert size of font + bpl = font[3]; // bytes per line + + if (char_x + hor > width()) { + char_x = 0; + char_y = char_y + vert; + if (char_y >= height() - font[2]) { + char_y = 0; + } + } + + zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap + w = zeichen[0]; // width of actual char + // construct the char into the buffer + for (j=0; j<vert; j++) { // vert line + for (i=0; i<hor; i++) { // horz line + z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1]; + b = 1 << (j & 0x07); + if (( z & b ) == 0x00) { + pixel(x+i,y+j,0); + } else { + pixel(x+i,y+j,1); + } + + } + } + + char_x += w; +} + + +void C12832_LCD::set_font(unsigned char* f) +{ + font = f; +} + +void C12832_LCD::set_auto_up(unsigned int up) +{ + if(up ) auto_up = 1; + else auto_up = 0; +} + +unsigned int C12832_LCD::get_auto_up(void) +{ + return (auto_up); +} + +void C12832_LCD::print_bm(Bitmap bm, int x, int y) +{ + int h,v,b; + char d; + + for(v=0; v < bm.ySize; v++) { // lines + for(h=0; h < bm.xSize; h++) { // pixel + if(h + x > 127) break; + if(v + y > 31) break; + d = bm.data[bm.Byte_in_Line * v + ((h & 0xF8) >> 3)]; + b = 0x80 >> (h & 0x07); + if((d & b) == 0) { + pixel(x+h,y+v,0); + } else { + pixel(x+h,y+v,1); + } + } + } + +} + +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832.h Thu Jan 30 17:16:04 2014 +0000 @@ -0,0 +1,313 @@ +/* mbed library for the mbed Lab Board 128*32 pixel LCD + * use C12832 controller + * Copyright (c) 2012 Peter Drescher - DC2PD + * Released under the MIT License: http://mbed.org/license/mit + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef C12832_H +#define C12832_H + +#include "mbed.h" +#include "GraphicsDisplay.h" + + +/** optional Defines : + * #define debug_lcd 1 enable infos to PC_USB + */ + +// some defines for the DMA use +#define DMA_CHANNEL_ENABLE 1 +#define DMA_TRANSFER_TYPE_M2P (1UL << 11) +#define DMA_CHANNEL_TCIE (1UL << 31) +#define DMA_CHANNEL_SRC_INC (1UL << 26) +#define DMA_MASK_IE (1UL << 14) +#define DMA_MASK_ITC (1UL << 15) +#define DMA_SSP1_TX (1UL << 2) +#define DMA_SSP0_TX (0) +#define DMA_DEST_SSP1_TX (2UL << 6) +#define DMA_DEST_SSP0_TX (0UL << 6) + +/** Draw mode + * NORMAl + * XOR set pixel by xor the screen + */ +enum {NORMAL,XOR}; + +/** Bitmap + */ +struct Bitmap{ + int xSize; + int ySize; + int Byte_in_Line; + char* data; + }; + +class C12832_LCD : public GraphicsDisplay +{ +public: + /** Create a C12832_LCD object connected to SPI1 + * + */ + + C12832_LCD(PinName mosi, PinName sck, PinName reset, PinName a0, PinName ncs, const char* name = "LCD"); + + + /** Get the width of the screen in pixel + * + * @param + * @returns width of screen in pixel + * + */ + virtual int width(); + + /** Get the height of the screen in pixel + * + * @returns height of screen in pixel + * + */ + virtual int height(); + + /** Draw a pixel at x,y black or white + * + * @param x horizontal position + * @param y vertical position + * @param colour ,1 set pixel ,0 erase pixel + */ + virtual void pixel(int x, int y,int colour); + + /** draw a circle + * + * @param x0,y0 center + * @param r radius + * @param colour ,1 set pixel ,0 erase pixel + * + */ + void circle(int x, int y, int r, int colour); + + /** draw a filled circle + * + * @param x0,y0 center + * @param r radius + * @param color ,1 set pixel ,0 erase pixel + * + * use circle with different radius, + * can miss some pixel + */ + void fillcircle(int x, int y, int r, int colour); + + /** draw a 1 pixel line + * + * @param x0,y0 start point + * @param x1,y1 stop point + * @param color ,1 set pixel ,0 erase pixel + * + */ + void line(int x0, int y0, int x1, int y1, int colour); + + /** draw a rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color 1 set pixel ,0 erase pixel + * * + */ + void rect(int x0, int y0, int x1, int y1, int colour); + + /** draw a filled rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color 1 set pixel ,0 erase pixel + * + */ + void fillrect(int x0, int y0, int x1, int y1, int colour); + + /** copy display buffer to lcd + * + */ + + void copy_to_lcd(void); + + /** set the orienation of the screen + * + */ + + //void set_orientation(unsigned int o); + + /** set the contrast of the screen + * + * @param o contrast 0-63 + */ + + void set_contrast(unsigned int o); + + /** read the contrast level + * + */ + unsigned int get_contrast(void); + + + + /** invert the screen + * + * @param o = 0 normal, 1 invert + */ + void invert(unsigned int o); + + /** clear the screen + * + */ + virtual void cls(void); + + /** set the drawing mode + * + * @param mode NORMAl or XOR + */ + + void setmode(int mode); + + virtual int columns(void); + + /** calculate the max number of columns + * + * @returns max column + * depends on actual font size + * + */ + virtual int rows(void); + + /** put a char on the screen + * + * @param value char to print + * @returns printed char + * + */ + virtual int _putc(int value); + + /** draw a character on given position out of the active font to the LCD + * + * @param x x-position of char (top left) + * @param y y-position + * @param c char to print + * + */ + virtual void character(int x, int y, int c); + + /** setup cursor position + * + * @param x x-position (top left) + * @param y y-position + */ + virtual void locate(int x, int y); + + /** setup auto update of screen + * + * @param up 1 = on , 0 = off + * if switched off the program has to call copy_to_lcd() + * to update screen from framebuffer + */ + void set_auto_up(unsigned int up); + + /** get status of the auto update function + * + * @returns if auto update is on + */ + unsigned int get_auto_up(void); + + /** Vars */ + SPI _spi; + DigitalOut _reset; + DigitalOut _A0; + DigitalOut _CS; + unsigned char* font; + unsigned int draw_mode; + + + /** select the font to use + * + * @param f pointer to font array + * + * font array can created with GLCD Font Creator from http://www.mikroe.com + * you have to add 4 parameter at the beginning of the font array to use: + * - the number of byte / char + * - the vertial size in pixel + * - the horizontal size in pixel + * - the number of byte per vertical line + * you also have to change the array to char[] + * + */ + void set_font(unsigned char* f); + + /** print bitmap to buffer + * + * @param bm Bitmap in flash + * @param x x start + * @param y y start + * + */ + + void print_bm(Bitmap bm, int x, int y); + +protected: + + /** draw a horizontal line + * + * @param x0 horizontal start + * @param x1 horizontal stop + * @param y vertical position + * @param ,1 set pixel ,0 erase pixel + * + */ + void hline(int x0, int x1, int y, int colour); + + /** draw a vertical line + * + * @param x horizontal position + * @param y0 vertical start + * @param y1 vertical stop + * @param ,1 set pixel ,0 erase pixel + */ + void vline(int y0, int y1, int x, int colour); + + /** Init the C12832 LCD controller + * + */ + void lcd_reset(); + + /** Write data to the LCD controller + * + * @param dat data written to LCD controller + * + */ + void wr_dat(unsigned char value); + + /** Write a command the LCD controller + * + * @param cmd: command to be written + * + */ + void wr_cmd(unsigned char value); + + void wr_cnt(unsigned char cmd); + + unsigned int orientation; + unsigned int char_x; + unsigned int char_y; + unsigned char buffer[512]; + unsigned int contrast; + unsigned int auto_up; + +}; + + + + +#endif
--- a/C12832_lcd.cpp Wed Jan 08 16:56:49 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,672 +0,0 @@ -/* mbed library for the mbed Lab Board 128*32 pixel LCD - * use C12832 controller - * Copyright (c) 2012 Peter Drescher - DC2PD - * Released under the MIT License: http://mbed.org/license/mit - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -// 13.10.12 initial design -// 25.10.12 add autorefresh of screen -// 25.10.12 add standart font -// 20.12.12 add bitmap graphics - -// optional defines : -// #define debug_lcd 1 - -#include "C12832_lcd.h" -#include "mbed.h" -#include "stdio.h" -#include "Small_7.h" - -#define BPP 1 // Bits per pixel - - -C12832_LCD::C12832_LCD(PinName mosi, PinName sck, PinName reset, PinName a0, PinName ncs, const char* name) - : _spi(mosi,NC,sck),_reset(reset),_A0(a0),_CS(ncs),GraphicsDisplay(name) -{ - orientation = 1; - draw_mode = NORMAL; - char_x = 0; - lcd_reset(); -} - - -int C12832_LCD::width() -{ - if (orientation == 0 || orientation == 2) return 32; - else return 128; -} - -int C12832_LCD::height() -{ - if (orientation == 0 || orientation == 2) return 128; - else return 32; -} - - -/*void C12832_LCD::set_orientation(unsigned int o) -{ - orientation = o; - switch (o) { - case (0): - wr_cmd(0xA0); - wr_cmd(0xC0); - break; - case (1): - wr_cmd(0xA0); - wr_cmd(0xC8); - break; - case (2): - wr_cmd(0xA1); - wr_cmd(0xC8); - break; - case (3): - wr_cmd(0xA1); - wr_cmd(0xC0); - break; - } -} - -*/ - -void C12832_LCD::invert(unsigned int o) -{ - if(o == 0) wr_cmd(0xA6); - else wr_cmd(0xA7); -} - - -void C12832_LCD::set_contrast(unsigned int o) -{ - contrast = o; - wr_cmd(0x81); // set volume - wr_cmd(o & 0x3F); -} - -unsigned int C12832_LCD::get_contrast(void) -{ - return(contrast); -} - - -// write command to lcd controller - -void C12832_LCD::wr_cmd(unsigned char cmd) -{ - _A0 = 0; - _CS = 0; -#if defined TARGET_LPC17699 // fast without mbed lib - LPC_SSP1->DR = cmd; - do { - } while ((LPC_SSP1->SR & 0x10) == 0x10); // wait for SPI1 idle -#else - _spi.write(cmd); -#endif - _CS = 1; -} - -// write data to lcd controller - -void C12832_LCD::wr_dat(unsigned char dat) -{ - _A0 = 1; - _CS = 0; -#if defined TARGET_LPC17699 // fast without mbed lib - LPC_SSP1->DR = dat; - do { - } while ((LPC_SSP1->SR & 0x10) == 0x10); // wait for SPI1 idle -#else - _spi.write(dat); -#endif - _CS = 1; -} - -// reset and init the lcd controller - -void C12832_LCD::lcd_reset() -{ - - _spi.format(8,3); // 8 bit spi mode 3 - _spi.frequency(20000000); // 19,2 Mhz SPI clock -// DigitalOut _reset(p6); - _A0 = 0; - _CS = 1; - _reset = 0; // display reset - wait_us(50); - _reset = 1; // end reset - wait_ms(5); - - /* Start Initial Sequence ----------------------------------------------------*/ - - wr_cmd(0xAE); // display off - wr_cmd(0xA2); // bias voltage - - wr_cmd(0xA0); - wr_cmd(0xC8); // colum normal - - wr_cmd(0x22); // voltage resistor ratio - wr_cmd(0x2F); // power on - //wr_cmd(0xA4); // LCD display ram - wr_cmd(0x40); // start line = 0 - wr_cmd(0xAF); // display ON - - wr_cmd(0x81); // set contrast - wr_cmd(0x17); // set contrast - - wr_cmd(0xA6); // display normal - - -#if defined TARGET_LPC17699 //setup DMA channel 0 - LPC_SC->PCONP |= (1UL << 29); // Power up the GPDMA - LPC_GPDMA->DMACConfig = 1; // enable DMA controller - LPC_GPDMA->DMACIntTCClear = 0x1; - LPC_GPDMA->DMACIntErrClr = 0x1; - LPC_GPDMACH0->DMACCLLI = 0; -#endif - // clear and update LCD - memset(buffer,0x00,512); // clear display buffer - copy_to_lcd(); - auto_up = 1; // switch on auto update - // dont do this by default. Make the user call - //claim(stdout); // redirekt printf to lcd - locate(0,0); - set_font((unsigned char*)Small_7); // standart font -} - -// set one pixel in buffer - -void C12832_LCD::pixel(int x, int y, int color) -{ - // first check parameter - if(x > 128 || y > 32 || x < 0 || y < 0) return; - - if(draw_mode == NORMAL) { - if(color == 0) - buffer[x + ((y/8) * 128)] &= ~(1 << (y%8)); // erase pixel - else - buffer[x + ((y/8) * 128)] |= (1 << (y%8)); // set pixel - } else { // XOR mode - if(color == 1) - buffer[x + ((y/8) * 128)] ^= (1 << (y%8)); // xor pixel - } -} - -// update lcd - -void C12832_LCD::copy_to_lcd(void) -{ -#ifndef TARGET_LPC17699 - int i; -#endif - //page 0 - wr_cmd(0x00); // set column low nibble 0 - wr_cmd(0x10); // set column hi nibble 0 - wr_cmd(0xB0); // set page address 0 - _A0 = 1; -#if defined TARGET_LPC17699 - _CS = 0; - // start 128 byte DMA transfer to SPI1 - LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 - LPC_SSP1->DMACR = 0x2; // Enable SSP1 for DMA. - LPC_GPDMA->DMACIntTCClear = 0x1; - LPC_GPDMA->DMACIntErrClr = 0x1; - LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer); - LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt - LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX; - LPC_GPDMA->DMACSoftSReq = 0x1; - do { - } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running - do { - } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle - _CS = 1; -#else // no DMA - for(i=0; i<128; i++) { - wr_dat(buffer[i]); - } -#endif - - // page 1 - wr_cmd(0x00); // set column low nibble 0 - wr_cmd(0x10); // set column hi nibble 0 - wr_cmd(0xB1); // set page address 1 - _A0 = 1; -#if defined TARGET_LPC17699 - _CS = 0; - // start 128 byte DMA transfer to SPI1 - LPC_GPDMA->DMACIntTCClear = 0x1; - LPC_GPDMA->DMACIntErrClr = 0x1; - LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + 128); - LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt - LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX; - LPC_GPDMA->DMACSoftSReq = 0x1; - do { - } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running - do { - } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle - _CS = 1; -#else // no DMA - for(i=128; i<256; i++) { - wr_dat(buffer[i]); - } -#endif - - //page 2 - wr_cmd(0x00); // set column low nibble 0 - wr_cmd(0x10); // set column hi nibble 0 - wr_cmd(0xB2); // set page address 2 - _A0 = 1; -#if defined TARGET_LPC17699 - _CS = 0; - // start 128 byte DMA transfer to SPI1 - LPC_GPDMA->DMACIntTCClear = 0x1; - LPC_GPDMA->DMACIntErrClr = 0x1; - LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + 256); - LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt - LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX ; - LPC_GPDMA->DMACSoftSReq = 0x1; - do { - } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running - do { - } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle - _CS = 1; -#else // no DMA - for(i=256; i<384; i++) { - wr_dat(buffer[i]); - } -#endif - - //page 3 - wr_cmd(0x00); // set column low nibble 0 - wr_cmd(0x10); // set column hi nibble 0 - wr_cmd(0xB3); // set page address 3 - _A0 = 1; - - _CS = 0; -#if defined TARGET_LPC17699 - // start 128 byte DMA transfer to SPI1 - LPC_GPDMA->DMACIntTCClear = 0x1; - LPC_GPDMA->DMACIntErrClr = 0x1; - LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + 384); - LPC_GPDMACH0->DMACCControl = 128 | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 8 bit transfer , address increment, interrupt - LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | DMA_DEST_SSP1_TX; - LPC_GPDMA->DMACSoftSReq = 0x1; - do { - } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running - do { - } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle - _CS = 1; -#else // no DMA - for(i=384; i<512; i++) { - wr_dat(buffer[i]); - } -#endif -} - -void C12832_LCD::cls(void) -{ - memset(buffer,0x00,512); // clear display buffer - copy_to_lcd(); -} - - -void C12832_LCD::line(int x0, int y0, int x1, int y1, int color) -{ - int dx = 0, dy = 0; - int dx_sym = 0, dy_sym = 0; - int dx_x2 = 0, dy_x2 = 0; - int di = 0; - - dx = x1-x0; - dy = y1-y0; - - // if (dx == 0) { /* vertical line */ - // if (y1 > y0) vline(x0,y0,y1,color); - // else vline(x0,y1,y0,color); - // return; - // } - - if (dx > 0) { - dx_sym = 1; - } else { - dx_sym = -1; - } - // if (dy == 0) { /* horizontal line */ - // if (x1 > x0) hline(x0,x1,y0,color); - // else hline(x1,x0,y0,color); - // return; - // } - - if (dy > 0) { - dy_sym = 1; - } else { - dy_sym = -1; - } - - dx = dx_sym*dx; - dy = dy_sym*dy; - - dx_x2 = dx*2; - dy_x2 = dy*2; - - if (dx >= dy) { - di = dy_x2 - dx; - while (x0 != x1) { - - pixel(x0, y0, color); - x0 += dx_sym; - if (di<0) { - di += dy_x2; - } else { - di += dy_x2 - dx_x2; - y0 += dy_sym; - } - } - pixel(x0, y0, color); - } else { - di = dx_x2 - dy; - while (y0 != y1) { - pixel(x0, y0, color); - y0 += dy_sym; - if (di < 0) { - di += dx_x2; - } else { - di += dx_x2 - dy_x2; - x0 += dx_sym; - } - } - pixel(x0, y0, color); - } - if(auto_up) copy_to_lcd(); -} - -void C12832_LCD::rect(int x0, int y0, int x1, int y1, int color) -{ - - if (x1 > x0) line(x0,y0,x1,y0,color); - else line(x1,y0,x0,y0,color); - - if (y1 > y0) line(x0,y0,x0,y1,color); - else line(x0,y1,x0,y0,color); - - if (x1 > x0) line(x0,y1,x1,y1,color); - else line(x1,y1,x0,y1,color); - - if (y1 > y0) line(x1,y0,x1,y1,color); - else line(x1,y1,x1,y0,color); - - if(auto_up) copy_to_lcd(); -} - -void C12832_LCD::fillrect(int x0, int y0, int x1, int y1, int color) -{ - int l,c,i; - if(x0 > x1) { - i = x0; - x0 = x1; - x1 = i; - } - - if(y0 > y1) { - i = y0; - y0 = y1; - y1 = i; - } - - for(l = x0; l<= x1; l ++) { - for(c = y0; c<= y1; c++) { - pixel(l,c,color); - } - } - if(auto_up) copy_to_lcd(); -} - - - -void C12832_LCD::circle(int x0, int y0, int r, int color) -{ - - int draw_x0, draw_y0; - int draw_x1, draw_y1; - int draw_x2, draw_y2; - int draw_x3, draw_y3; - int draw_x4, draw_y4; - int draw_x5, draw_y5; - int draw_x6, draw_y6; - int draw_x7, draw_y7; - int xx, yy; - int di; - //WindowMax(); - if (r == 0) { /* no radius */ - return; - } - - draw_x0 = draw_x1 = x0; - draw_y0 = draw_y1 = y0 + r; - if (draw_y0 < height()) { - pixel(draw_x0, draw_y0, color); /* 90 degree */ - } - - draw_x2 = draw_x3 = x0; - draw_y2 = draw_y3 = y0 - r; - if (draw_y2 >= 0) { - pixel(draw_x2, draw_y2, color); /* 270 degree */ - } - - draw_x4 = draw_x6 = x0 + r; - draw_y4 = draw_y6 = y0; - if (draw_x4 < width()) { - pixel(draw_x4, draw_y4, color); /* 0 degree */ - } - - draw_x5 = draw_x7 = x0 - r; - draw_y5 = draw_y7 = y0; - if (draw_x5>=0) { - pixel(draw_x5, draw_y5, color); /* 180 degree */ - } - - if (r == 1) { - return; - } - - di = 3 - 2*r; - xx = 0; - yy = r; - while (xx < yy) { - - if (di < 0) { - di += 4*xx + 6; - } else { - di += 4*(xx - yy) + 10; - yy--; - draw_y0--; - draw_y1--; - draw_y2++; - draw_y3++; - draw_x4--; - draw_x5++; - draw_x6--; - draw_x7++; - } - xx++; - draw_x0++; - draw_x1--; - draw_x2++; - draw_x3--; - draw_y4++; - draw_y5++; - draw_y6--; - draw_y7--; - - if ( (draw_x0 <= width()) && (draw_y0>=0) ) { - pixel(draw_x0, draw_y0, color); - } - - if ( (draw_x1 >= 0) && (draw_y1 >= 0) ) { - pixel(draw_x1, draw_y1, color); - } - - if ( (draw_x2 <= width()) && (draw_y2 <= height()) ) { - pixel(draw_x2, draw_y2, color); - } - - if ( (draw_x3 >=0 ) && (draw_y3 <= height()) ) { - pixel(draw_x3, draw_y3, color); - } - - if ( (draw_x4 <= width()) && (draw_y4 >= 0) ) { - pixel(draw_x4, draw_y4, color); - } - - if ( (draw_x5 >= 0) && (draw_y5 >= 0) ) { - pixel(draw_x5, draw_y5, color); - } - if ( (draw_x6 <=width()) && (draw_y6 <= height()) ) { - pixel(draw_x6, draw_y6, color); - } - if ( (draw_x7 >= 0) && (draw_y7 <= height()) ) { - pixel(draw_x7, draw_y7, color); - } - } - if(auto_up) copy_to_lcd(); -} - -void C12832_LCD::fillcircle(int x, int y, int r, int color) -{ - int i,up; - up = auto_up; - auto_up = 0; // off - for (i = 0; i <= r; i++) - circle(x,y,i,color); - auto_up = up; - if(auto_up) copy_to_lcd(); -} - -void C12832_LCD::setmode(int mode) -{ - draw_mode = mode; -} - -void C12832_LCD::locate(int x, int y) -{ - char_x = x; - char_y = y; -} - - - -int C12832_LCD::columns() -{ - return width() / font[1]; -} - - - -int C12832_LCD::rows() -{ - return height() / font[2]; -} - - - -int C12832_LCD::_putc(int value) -{ - if (value == '\n') { // new line - char_x = 0; - char_y = char_y + font[2]; - if (char_y >= height() - font[2]) { - char_y = 0; - } - } else { - character(char_x, char_y, value); - if(auto_up) copy_to_lcd(); - } - return value; -} - -void C12832_LCD::character(int x, int y, int c) -{ - unsigned int hor,vert,offset,bpl,j,i,b; - unsigned char* zeichen; - unsigned char z,w; - - if ((c < 31) || (c > 127)) return; // test char range - - // read font parameter from start of array - offset = font[0]; // bytes / char - hor = font[1]; // get hor size of font - vert = font[2]; // get vert size of font - bpl = font[3]; // bytes per line - - if (char_x + hor > width()) { - char_x = 0; - char_y = char_y + vert; - if (char_y >= height() - font[2]) { - char_y = 0; - } - } - - zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap - w = zeichen[0]; // width of actual char - // construct the char into the buffer - for (j=0; j<vert; j++) { // vert line - for (i=0; i<hor; i++) { // horz line - z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1]; - b = 1 << (j & 0x07); - if (( z & b ) == 0x00) { - pixel(x+i,y+j,0); - } else { - pixel(x+i,y+j,1); - } - - } - } - - char_x += w; -} - - -void C12832_LCD::set_font(unsigned char* f) -{ - font = f; -} - -void C12832_LCD::set_auto_up(unsigned int up) -{ - if(up ) auto_up = 1; - else auto_up = 0; -} - -unsigned int C12832_LCD::get_auto_up(void) -{ - return (auto_up); -} - -void C12832_LCD::print_bm(Bitmap bm, int x, int y) -{ - int h,v,b; - char d; - - for(v=0; v < bm.ySize; v++) { // lines - for(h=0; h < bm.xSize; h++) { // pixel - if(h + x > 127) break; - if(v + y > 31) break; - d = bm.data[bm.Byte_in_Line * v + ((h & 0xF8) >> 3)]; - b = 0x80 >> (h & 0x07); - if((d & b) == 0) { - pixel(x+h,y+v,0); - } else { - pixel(x+h,y+v,1); - } - } - } - -} - -
--- a/C12832_lcd.h Wed Jan 08 16:56:49 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,313 +0,0 @@ -/* mbed library for the mbed Lab Board 128*32 pixel LCD - * use C12832 controller - * Copyright (c) 2012 Peter Drescher - DC2PD - * Released under the MIT License: http://mbed.org/license/mit - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#ifndef C12832_H -#define C12832_H - -#include "mbed.h" -#include "GraphicsDisplay.h" - - -/** optional Defines : - * #define debug_lcd 1 enable infos to PC_USB - */ - -// some defines for the DMA use -#define DMA_CHANNEL_ENABLE 1 -#define DMA_TRANSFER_TYPE_M2P (1UL << 11) -#define DMA_CHANNEL_TCIE (1UL << 31) -#define DMA_CHANNEL_SRC_INC (1UL << 26) -#define DMA_MASK_IE (1UL << 14) -#define DMA_MASK_ITC (1UL << 15) -#define DMA_SSP1_TX (1UL << 2) -#define DMA_SSP0_TX (0) -#define DMA_DEST_SSP1_TX (2UL << 6) -#define DMA_DEST_SSP0_TX (0UL << 6) - -/** Draw mode - * NORMAl - * XOR set pixel by xor the screen - */ -enum {NORMAL,XOR}; - -/** Bitmap - */ -struct Bitmap{ - int xSize; - int ySize; - int Byte_in_Line; - char* data; - }; - -class C12832_LCD : public GraphicsDisplay -{ -public: - /** Create a C12832_LCD object connected to SPI1 - * - */ - - C12832_LCD(PinName mosi, PinName sck, PinName reset, PinName a0, PinName ncs, const char* name = "LCD"); - - - /** Get the width of the screen in pixel - * - * @param - * @returns width of screen in pixel - * - */ - virtual int width(); - - /** Get the height of the screen in pixel - * - * @returns height of screen in pixel - * - */ - virtual int height(); - - /** Draw a pixel at x,y black or white - * - * @param x horizontal position - * @param y vertical position - * @param colour ,1 set pixel ,0 erase pixel - */ - virtual void pixel(int x, int y,int colour); - - /** draw a circle - * - * @param x0,y0 center - * @param r radius - * @param colour ,1 set pixel ,0 erase pixel - * - */ - void circle(int x, int y, int r, int colour); - - /** draw a filled circle - * - * @param x0,y0 center - * @param r radius - * @param color ,1 set pixel ,0 erase pixel - * - * use circle with different radius, - * can miss some pixel - */ - void fillcircle(int x, int y, int r, int colour); - - /** draw a 1 pixel line - * - * @param x0,y0 start point - * @param x1,y1 stop point - * @param color ,1 set pixel ,0 erase pixel - * - */ - void line(int x0, int y0, int x1, int y1, int colour); - - /** draw a rect - * - * @param x0,y0 top left corner - * @param x1,y1 down right corner - * @param color 1 set pixel ,0 erase pixel - * * - */ - void rect(int x0, int y0, int x1, int y1, int colour); - - /** draw a filled rect - * - * @param x0,y0 top left corner - * @param x1,y1 down right corner - * @param color 1 set pixel ,0 erase pixel - * - */ - void fillrect(int x0, int y0, int x1, int y1, int colour); - - /** copy display buffer to lcd - * - */ - - void copy_to_lcd(void); - - /** set the orienation of the screen - * - */ - - //void set_orientation(unsigned int o); - - /** set the contrast of the screen - * - * @param o contrast 0-63 - */ - - void set_contrast(unsigned int o); - - /** read the contrast level - * - */ - unsigned int get_contrast(void); - - - - /** invert the screen - * - * @param o = 0 normal, 1 invert - */ - void invert(unsigned int o); - - /** clear the screen - * - */ - virtual void cls(void); - - /** set the drawing mode - * - * @param mode NORMAl or XOR - */ - - void setmode(int mode); - - virtual int columns(void); - - /** calculate the max number of columns - * - * @returns max column - * depends on actual font size - * - */ - virtual int rows(void); - - /** put a char on the screen - * - * @param value char to print - * @returns printed char - * - */ - virtual int _putc(int value); - - /** draw a character on given position out of the active font to the LCD - * - * @param x x-position of char (top left) - * @param y y-position - * @param c char to print - * - */ - virtual void character(int x, int y, int c); - - /** setup cursor position - * - * @param x x-position (top left) - * @param y y-position - */ - virtual void locate(int x, int y); - - /** setup auto update of screen - * - * @param up 1 = on , 0 = off - * if switched off the program has to call copy_to_lcd() - * to update screen from framebuffer - */ - void set_auto_up(unsigned int up); - - /** get status of the auto update function - * - * @returns if auto update is on - */ - unsigned int get_auto_up(void); - - /** Vars */ - SPI _spi; - DigitalOut _reset; - DigitalOut _A0; - DigitalOut _CS; - unsigned char* font; - unsigned int draw_mode; - - - /** select the font to use - * - * @param f pointer to font array - * - * font array can created with GLCD Font Creator from http://www.mikroe.com - * you have to add 4 parameter at the beginning of the font array to use: - * - the number of byte / char - * - the vertial size in pixel - * - the horizontal size in pixel - * - the number of byte per vertical line - * you also have to change the array to char[] - * - */ - void set_font(unsigned char* f); - - /** print bitmap to buffer - * - * @param bm Bitmap in flash - * @param x x start - * @param y y start - * - */ - - void print_bm(Bitmap bm, int x, int y); - -protected: - - /** draw a horizontal line - * - * @param x0 horizontal start - * @param x1 horizontal stop - * @param y vertical position - * @param ,1 set pixel ,0 erase pixel - * - */ - void hline(int x0, int x1, int y, int colour); - - /** draw a vertical line - * - * @param x horizontal position - * @param y0 vertical start - * @param y1 vertical stop - * @param ,1 set pixel ,0 erase pixel - */ - void vline(int y0, int y1, int x, int colour); - - /** Init the C12832 LCD controller - * - */ - void lcd_reset(); - - /** Write data to the LCD controller - * - * @param dat data written to LCD controller - * - */ - void wr_dat(unsigned char value); - - /** Write a command the LCD controller - * - * @param cmd: command to be written - * - */ - void wr_cmd(unsigned char value); - - void wr_cnt(unsigned char cmd); - - unsigned int orientation; - unsigned int char_x; - unsigned int char_y; - unsigned char buffer[512]; - unsigned int contrast; - unsigned int auto_up; - -}; - - - - -#endif