Librarie pour ecran 128x32 de MyLab
C12832.cpp
- Committer:
- lucas_favre
- Date:
- 2016-03-29
- Revision:
- 12:00bbd42614c7
- Parent:
- 11:c00a727f140f
File content as of revision 12:00bbd42614c7:
/* 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" #include "Arial_9.h" #define BPP 1 // Bits per pixel C12832::C12832(PinName e,PinName rw, PinName a0,PinName cs, PinName d0, PinName d1,PinName d2, PinName d3,PinName d4,PinName d5,PinName d6,PinName d7,const char* name) : GraphicsDisplay(name), _e(e), _a0(a0),_cs(cs),_rw(rw), _d(d0, d1, d2, d3,d4,d5,d6,d7) { _cs = 1; RESET(); Delay(1000); CLEAR_ADC(); //Normal disrect (SEG0-SEG128) SET_SHL(); // SHL 1,COM33-COM0 SET_BIAS(); // 1/7 BIAS Power_Control(0x07); //Booster circuit: ON Voltage regulator circuit: ON Voltage follower circuit: ON Regulor_Resistor_Select(0x05); //V0 voltage regulator internal resistance ratio register value and (1 + Rb/Ra) ratio (Reference value) 5.5 Set_Contrast_Control_Register(19); Initial_Dispay_Line(0x00); //Dispay Line 0 wr_cmd(0xF8); //select booster ratio wr_cmd(0x00); //4X DISPLAY_ON(); // 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 } void C12832::Delay(uint32_t n) { uint32_t a; for (a = 0; a < n; a++); } //Specify DDRAM line for COM0 0~63 void C12832::Initial_Dispay_Line(unsigned char line) { line|=0x40; wr_cmd(line); return; } void C12832::Power_Control(unsigned char vol) { wr_cmd((0x28|vol)); return; } /* Regulor resistor select ** 1+Rb/Ra Vo=(1+Rb/Ra)Vev Vev=(1-(63-a)/162)Vref 2.1v ** 0 3.0 4 5.0(default) ** 1 3.5 5 5.5 ** 2 4 6 6 ** 3 4.5 7 6.4 */ void C12832::Regulor_Resistor_Select(unsigned char r) { wr_cmd((0x20|r)); return; } //a(0-63) 32default Vev=(1-(63-a)/162)Vref 2.1v void C12832::Set_Contrast_Control_Register(unsigned char mod) { wr_cmd(0x81); wr_cmd(mod); return; } int C12832::width() { return 128; } int C12832::height() { return 32; } void C12832::invert(unsigned int o) { if(o == 0) wr_cmd(0xA6); else wr_cmd(0xA7); } void C12832::set_contrast(unsigned int o) { contrast = o; wr_cmd(0x81); // set volume wr_cmd(o & 0x3F); } unsigned int C12832::get_contrast(void) { return(contrast); } // write command to lcd controller void C12832::wr_cmd(unsigned char cmd) { _cs =0; _a0 = 0; _rw = 0; _d = cmd; LPC_GPIO2->FIODIR |= 0xFF; _e = 1; asm("nop"); _e = 0; LPC_GPIO2->FIODIR &= ~0xFF; _rw=1; _cs=1; } // write data to lcd controller void C12832::wr_dat(unsigned char dat) { _cs = 0; _a0 = 1; _rw = 0; _d = dat; LPC_GPIO2->FIODIR |= 0xFF; _e = 1; asm("nop"); _e = 0; LPC_GPIO2->FIODIR &= ~0xFF; _rw=1; _cs=1; } // set one pixel in buffer void C12832::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::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::cls(void) { memset(buffer,0x00,512); // clear display buffer copy_to_lcd(); } void C12832::setmode(int mode) { draw_mode = mode; } void C12832::locate(int x, int y) { char_x = x; char_y = y; } int C12832::columns() { return width() / font[1]; } int C12832::rows() { return height() / font[2]; } int C12832::_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::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::set_font(unsigned char* f) { font = f; } void C12832::set_auto_up(unsigned int up) { if(up ) auto_up = 1; else auto_up = 0; } unsigned int C12832::get_auto_up(void) { return (auto_up); } void C12832::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); } } } }