Moified C21832 library
Fork of C12832 by
Diff: C12832.cpp
- Revision:
- 15:67dfa5550b73
- Child:
- 16:7de323fa46fe
--- /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); + } + } + } + +} + +