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A C12832 LCD with generic interface
Dependents: mbed_blinky HTTPClient_HelloWorld websocketandnode xbeerx ... more
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C12832
by 
Chris Styles
Diff: C12832_lcd.cpp
- Revision:
- 15:67dfa5550b73
- Parent:
- 14:b834d587bf45
- Child:
- 16:7de323fa46fe
--- 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);
- }
- }
- }
-
-}
-
-