Diff: sharp_mlcd.cpp

Revision:

0:c99dda90f834

Child:

1:f8ba3b236d12

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sharp_mlcd.cpp	Sat May 10 15:32:38 2014 +0000
@@ -0,0 +1,497 @@
+/*
+ * mbed library for the Sharp memory LCD LS027BDH01 / LS013B4DN04
+ * derived from C12832_lcd
+ * Copyright (c) 2014 Masato YAMANISHI
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+/* 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 "mbed.h"
+#include "sharp_mlcd.h"
+#include "stdio.h"
+#include "Small_7.h"
+
+sharp_mlcd::sharp_mlcd(const char* name)
+  : _spi(D11,NC,D13),_EXTCOM(D9),_DISP(D8),_CS(D10), GraphicsDisplay(name) // for nucleo L152RE or other
+{
+  draw_mode = NORMAL;
+  char_x = 0;
+  lcd_reset();
+}
+
+int sharp_mlcd::width()
+{
+  return WIDTH;
+}
+
+int sharp_mlcd::height()
+{
+  return HEIGHT; // 32;
+}
+
+// write command to lcd controller
+
+
+// reset and init the lcd controller
+
+void sharp_mlcd::lcd_reset()
+{
+  _CS = 0;
+  _spi.format(8, 0);                 // 8 bit spi mode 0
+  _spi.frequency(2000000);          // 2 Mhz SPI clock
+  _DISP = 1;
+  flip = 0;
+  // timer.attach(attime, 0.5); // 1KHz
+
+  _CS = 1;
+  wait_us(4);
+  _spi.write(0x20); // 0x20:clear 0x00:run
+  _spi.write(0); // dummy
+  wait_us(2);
+  _CS = 0;
+
+  // clear and update LCD
+  cls();
+  // memset(buffer,0xff,BUFFER_SIZE);  // 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 sharp_mlcd::pixel(int x, int y, int color)
+{
+  // first check parameter
+  if(x > WIDTH || y > HEIGHT || x < 0 || y < 0) return;
+
+  if(draw_mode == NORMAL) {
+    if(color == 0)
+      buffer[x/8 + (y*WIDTH/8)] &= ~(1 << (7-(x%8)));  // set pixel
+    else
+      buffer[x/8 + (y*WIDTH/8)] |= (1 << (7-(x%8)));   // erase pixel
+  } else { // XOR mode
+    if(color == 1)
+      buffer[x/8 + (y*WIDTH/8)] ^= (1 << (7-(x%8)));   // xor pixel
+  }
+}
+
+// update lcd
+
+void sharp_mlcd::attime() {
+  flip = !flip;
+  _EXTCOM = flip;
+}
+
+unsigned char sharp_mlcd::bit_reverse(unsigned char c) {
+  unsigned char u=0; // c = TESTVALUE;
+  int i;
+
+  for (i=0 ; i<4 ; i++)
+    u |= ((c & (1 << i)) << (7-2*i)) | ((c & (1 << 7-i)) >> (7-2*i));
+  return u;
+}
+
+void sharp_mlcd::copy_to_lcd(void)
+{
+  const int start = 0;
+  int x, y;
+  unsigned char *p = (unsigned char*)buffer; // image;
+    
+  _CS = 1;
+  wait_us(4); // min 3us
+  //
+  for (y = 0; y < HEIGHT; y++) {
+    _spi.write(0x80); // update mode (multi line)
+    _spi.write(bit_reverse((y + 1 + start) % HEIGHT)); // set gate line address
+    for (x = 0; x < (WIDTH / 8); x++) {
+      _spi.write(*p++); // (((y / 8) + x + mode) % 2)? 0xff: 0);
+    }
+  }
+  //
+  wait_us(2); // min 1us
+  _CS = 0;
+}
+
+void sharp_mlcd::cls(void)
+{
+  memset(buffer,0x00,BUFFER_SIZE);  // clear display buffer
+  copy_to_lcd();
+}
+
+
+void sharp_mlcd::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 sharp_mlcd::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 sharp_mlcd::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 sharp_mlcd::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 sharp_mlcd::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 sharp_mlcd::setmode(int mode)
+{
+  draw_mode = mode;
+}
+
+void sharp_mlcd::locate(int x, int y)
+{
+  char_x = x;
+  char_y = y;
+}
+
+
+
+int sharp_mlcd::columns()
+{
+  return width() / font[1];
+}
+
+
+
+int sharp_mlcd::rows()
+{
+  return height() / font[2];
+}
+
+
+
+int sharp_mlcd::_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 sharp_mlcd::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 sharp_mlcd::set_font(unsigned char* f)
+{
+  font = f;
+}
+
+void sharp_mlcd::set_auto_up(unsigned int up)
+{
+  if(up ) auto_up = 1;
+  else auto_up = 0;
+}
+
+unsigned int sharp_mlcd::get_auto_up(void)
+{
+  return (auto_up);
+}
+
+void sharp_mlcd::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 > WIDTH-1) break;
+      if(v + y > HEIGHT-1) 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);
+      }
+    }
+  }
+}
+    
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