Diff: SPI_TFT_ILI9341.cpp

Revision:

0:da1bf437cbc1

Child:

1:6d6125e88de7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SPI_TFT_ILI9341.cpp	Wed Jun 12 22:54:38 2013 +0000
@@ -0,0 +1,685 @@
+/* mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
+ * Copyright (c) 2013 Peter Drescher - DC2PD
+ *
+ * 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.
+ */
+ 
+// 12.06.13 fork from SPI_TFT code because controller is different ...
+
+#include "SPI_TFT_ILI9341.h"
+#include "mbed.h"
+
+#define BPP         16                  // Bits per pixel    
+            
+
+//extern Serial pc;
+//extern DigitalOut xx;     // debug !!
+
+SPI_TFT_ILI9341::SPI_TFT_ILI9341(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset, PinName dc, const char *name)
+    : _spi(mosi, miso, sclk), _cs(cs), _reset(reset), _dc(dc), GraphicsDisplay(name)
+{
+    orientation = 0;
+    char_x = 0;
+    tft_reset();
+}
+
+int SPI_TFT_ILI9341::width()
+{
+    if (orientation == 0 || orientation == 2) return 240;
+    else return 320;
+}
+
+
+int SPI_TFT_ILI9341::height()
+{
+    if (orientation == 0 || orientation == 2) return 320;
+    else return 240;
+}
+
+
+/*void SPI_TFT_ILI9341::set_orientation(unsigned int o)
+{
+    orientation = o;
+    switch (orientation) {
+        case 0:
+            wr_reg(0x16, 0x08);
+            break;
+        case 1:
+            wr_reg(0x16, 0x68);
+            break;
+        case 2:
+            wr_reg(0x16, 0xC8);
+            break;
+        case 3:
+            wr_reg(0x16, 0xA8);
+            break;
+    }
+    WindowMax();
+} */
+
+
+// write command to tft register
+
+void SPI_TFT_ILI9341::wr_cmd(unsigned char cmd)
+{
+    _dc = 0;
+    _cs = 0;
+    _spi.write(cmd);      // mbed lib
+    _dc = 1;
+}
+
+
+
+void SPI_TFT_ILI9341::wr_dat(unsigned char dat)
+{
+   _spi.write(dat);      // mbed lib
+//   _cs = 1;
+}
+
+
+
+// the ILI9341 can read - has to be implemented later
+// A read will return 0 at the moment
+
+//unsigned short SPI_TFT_ILI9341::rd_dat (void)
+//{
+//    unsigned short val = 0;
+
+    //val = _spi.write(0x73ff);                /* Dummy read 1           */
+    //val   = _spi.write(0x0000);              /* Read D8..D15           */
+//    return (val);
+//}
+
+
+
+void SPI_TFT_ILI9341::tft_reset()
+{
+    //static unsigned short driverCode;
+    _spi.format(8,3);                 // 8 bit spi mode 3
+    _spi.frequency(12000000);          // 12 Mhz SPI clock
+    _cs = 1;                           // cs high
+    _dc = 1;                           // dc high 
+    _reset = 0;                        // display reset
+
+    wait_us(50);
+    _reset = 1;                       // end reset
+    wait_ms(5);
+
+    /* Start Initial Sequence ----------------------------------------------------*/
+     wr_cmd(0xCD);                     // Power Control A
+     _spi.write(0x39);
+     _spi.write(0x2C);
+     _spi.write(0x00);
+     _spi.write(0x34);
+     _spi.write(0x02);
+     _cs = 1;
+     
+     wr_cmd(0xCF);                     // Power Control B
+     _spi.write(0x00);
+     _spi.write(0xAA);
+     _spi.write(0xB0);
+     _cs = 1;
+     wr_cmd(0xF7);                     // CMD_PUMP_RATIO_CONTROL
+     _spi.write(0x30);
+     _cs = 1;
+     wr_cmd(0xC0);                     // POWER_CONTROL_1
+     _spi.write(0x25);
+     _cs = 1;
+     wr_cmd(0xC1);                     // POWER_CONTROL_2
+     _spi.write(0x11);
+     _cs = 1;
+     wr_cmd(0xC5);                     // VCOM_CONTROL_1
+     _spi.write(0x5C);
+     _spi.write(0x4C);
+     _cs = 1;
+     wr_cmd(0xC7);                     // VCOM_CONTROL_2
+     _spi.write(0x94);
+     _cs = 1;   
+     wr_cmd(0xE8);                     // DRIVER_TIMING_CONTROL_A
+     _spi.write(0x85);
+     _spi.write(0x01);
+     _spi.write(0x78);
+     _cs = 1; 
+     wr_cmd(0xEA);                     // DRIVER_TIMING_CONTROL_B
+     _spi.write(0x00);
+     _spi.write(0x00);
+     _cs = 1; 
+      wr_cmd(0x3A);                     // COLMOD_PIXEL_FORMAT_SET
+     _spi.write(0x05);
+     _cs = 1;
+     wr_cmd(0x36);                     // MEMORY_ACCESS_CONTROL
+     _spi.write(0x48);
+     _cs = 1; 
+    WindowMax ();
+}
+
+
+void SPI_TFT_ILI9341::pixel(int x, int y, int color)
+{
+    wr_cmd(0x2A);
+    _spi.write(x >> 8);
+    _spi.write(x);
+    _cs = 1;
+    wr_cmd(0x2B);
+    _spi.write(y >> 8);
+    _spi.write(y);
+    _cs = 1;
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    _spi.write(color);                              // Write D0..D15
+    _spi.format(8,3);
+    _cs = 1;
+}
+
+
+void SPI_TFT_ILI9341::window (unsigned int x, unsigned int y, unsigned int w, unsigned int h)
+{
+    wr_cmd(0x2A);
+    _spi.write(x >> 8);
+    _spi.write(x);
+    _spi.write((x+w-1) >> 8);
+    _spi.write(x+w-1);
+    
+    _cs = 1;
+    wr_cmd(0x2B);
+    _spi.write(y >> 8);
+    _spi.write(y);
+    _spi.write((y+h-1) >> 8);
+    _spi.write(y+h-1);
+    _cs = 1;
+}
+
+
+void SPI_TFT_ILI9341::WindowMax (void)
+{
+    window (0, 0, width(),  height());
+}
+
+
+
+void SPI_TFT_ILI9341::cls (void)
+{
+    int pixel = ( width() * height());
+    WindowMax();
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    unsigned int i;
+    for (i = 0; i < ( width() * height()); i++)
+        _spi.write(_background);                     
+    _cs = 1;
+    _spi.format(8,3);
+}
+
+
+void SPI_TFT_ILI9341::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);
+        }
+    }
+    return;
+}
+
+void SPI_TFT_ILI9341::fillcircle(int x, int y, int r, int color)
+{
+    int i;
+    for (i = 0; i <= r; i++)
+        circle(x,y,i,color);
+}
+
+
+
+void SPI_TFT_ILI9341::hline(int x0, int x1, int y, int color)
+{
+    int w;
+    w = x1 - x0 + 1;
+    window(x0,y,w,1);
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    int j;
+    for (j=0; j<w; j++) {
+        _spi.write(color);
+    }
+    _cs = 1;
+    _spi.format(8,3);
+    WindowMax();
+    return;
+}
+
+void SPI_TFT_ILI9341::vline(int x, int y0, int y1, int color)
+{
+    int h;
+    h = y1 - y0 + 1;
+    window(x,y0,1,h);
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    for (int y=0; y<h; y++) {
+        _spi.write(color);
+    }
+    _cs = 1;
+    _spi.format(8,3);
+    WindowMax();
+    return;
+}
+
+
+
+void SPI_TFT_ILI9341::line(int x0, int y0, int x1, int y1, int color)
+{
+    //WindowMax();
+    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);
+    }
+    return;
+}
+
+
+void SPI_TFT_ILI9341::rect(int x0, int y0, int x1, int y1, int color)
+{
+
+    if (x1 > x0) hline(x0,x1,y0,color);
+    else  hline(x1,x0,y0,color);
+
+    if (y1 > y0) vline(x0,y0,y1,color);
+    else vline(x0,y1,y0,color);
+
+    if (x1 > x0) hline(x0,x1,y1,color);
+    else  hline(x1,x0,y1,color);
+
+    if (y1 > y0) vline(x1,y0,y1,color);
+    else vline(x1,y1,y0,color);
+
+    return;
+}
+
+
+
+void SPI_TFT_ILI9341::fillrect(int x0, int y0, int x1, int y1, int color)
+{
+
+    int h = y1 - y0 + 1;
+    int w = x1 - x0 + 1;
+    int pixel = h * w;
+    window(x0,y0,w,h);
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    for (int p=0; p<pixel; p++) {
+        _spi.write(color);
+    }
+    _cs = 1;
+    _spi.format(8,3);
+    WindowMax();
+    return;
+}
+
+
+void SPI_TFT_ILI9341::locate(int x, int y)
+{
+    char_x = x;
+    char_y = y;
+}
+
+
+
+int SPI_TFT_ILI9341::columns()
+{
+    return width() / font[1];
+}
+
+
+
+int SPI_TFT_ILI9341::rows()
+{
+    return height() / font[2];
+}
+
+
+
+int SPI_TFT_ILI9341::_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);
+    }
+    return value;
+}
+
+
+void SPI_TFT_ILI9341::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;
+        }
+    }
+    window(char_x, char_y,hor,vert); // char box
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap
+    w = zeichen[0];                          // width of actual char
+     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) {
+                _spi.write(_background);
+            } else {
+                _spi.write(_foreground);
+            }
+        }
+    }
+    _cs = 1;
+    _spi.format(8,3);
+    WindowMax();
+    if ((w + 2) < hor) {                   // x offset to next char
+        char_x += w + 2;
+    } else char_x += hor;
+}
+
+
+void SPI_TFT_ILI9341::set_font(unsigned char* f)
+{
+    font = f;
+}
+
+
+
+void SPI_TFT_ILI9341::Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap)
+{
+    unsigned int  j;
+    int padd;
+    unsigned short *bitmap_ptr = (unsigned short *)bitmap;
+    // the lines are padded to multiple of 4 bytes in a bitmap
+    padd = -1;
+    do {
+        padd ++;
+    } while (2*(w + padd)%4 != 0);
+    window(x, y, w, h);
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    unsigned int i;
+    for (j = 0; j < h; j++) {        //Lines
+        for (i = 0; i < w; i++) {     // copy pixel data to TFT
+            _spi.write(*bitmap_ptr);    // one line
+            bitmap_ptr++;
+        }
+        bitmap_ptr -= 2*w;
+        bitmap_ptr -= padd;
+    }
+    _cs = 1;
+    _spi.format(8,3);
+    WindowMax();
+}
+
+
+int SPI_TFT_ILI9341::BMP_16(unsigned int x, unsigned int y, const char *Name_BMP)
+{
+
+#define OffsetPixelWidth    18
+#define OffsetPixelHeigh    22
+#define OffsetFileSize      34
+#define OffsetPixData       10
+#define OffsetBPP           28
+
+    char filename[50];
+    unsigned char BMP_Header[54];
+    unsigned short BPP_t;
+    unsigned int PixelWidth,PixelHeigh,start_data;
+    unsigned int    i,off;
+    int padd,j;
+    unsigned short *line;
+
+    // get the filename
+    LocalFileSystem local("local");
+    sprintf(&filename[0],"/local/");
+    i=7;
+    while (*Name_BMP!='\0') {
+        filename[i++]=*Name_BMP++;
+    }
+
+    fprintf(stderr, "filename : %s \n\r",filename);
+
+    FILE *Image = fopen((const char *)&filename[0], "rb");  // open the bmp file
+    if (!Image) {
+        return(0);      // error file not found !
+    }
+
+    fread(&BMP_Header[0],1,54,Image);      // get the BMP Header
+
+    if (BMP_Header[0] != 0x42 || BMP_Header[1] != 0x4D) {  // check magic byte
+        fclose(Image);
+        return(-1);     // error no BMP file
+    }
+
+    BPP_t = BMP_Header[OffsetBPP] + (BMP_Header[OffsetBPP + 1] << 8);
+    if (BPP_t != 0x0010) {
+        fclose(Image);
+        return(-2);     // error no 16 bit BMP
+    }
+
+    PixelHeigh = BMP_Header[OffsetPixelHeigh] + (BMP_Header[OffsetPixelHeigh + 1] << 8) + (BMP_Header[OffsetPixelHeigh + 2] << 16) + (BMP_Header[OffsetPixelHeigh + 3] << 24);
+    PixelWidth = BMP_Header[OffsetPixelWidth] + (BMP_Header[OffsetPixelWidth + 1] << 8) + (BMP_Header[OffsetPixelWidth + 2] << 16) + (BMP_Header[OffsetPixelWidth + 3] << 24);
+    if (PixelHeigh > height() + y || PixelWidth > width() + x) {
+        fclose(Image);
+        return(-3);      // to big
+    }
+
+    start_data = BMP_Header[OffsetPixData] + (BMP_Header[OffsetPixData + 1] << 8) + (BMP_Header[OffsetPixData + 2] << 16) + (BMP_Header[OffsetPixData + 3] << 24);
+
+    line = (unsigned short *) malloc (2 * PixelWidth); // we need a buffer for a line
+    if (line == NULL) {
+        return(-4);         // error no memory
+    }
+
+    // the bmp lines are padded to multiple of 4 bytes
+    padd = -1;
+    do {
+        padd ++;
+    } while ((PixelWidth * 2 + padd)%4 != 0);
+
+
+//fseek(Image, 70 ,SEEK_SET);
+    window(x, y,PixelWidth ,PixelHeigh);
+    wr_cmd(0x2C);  // send pixel 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    for (j = PixelHeigh - 1; j >= 0; j--) {               //Lines bottom up
+        off = j * (PixelWidth  * 2 + padd) + start_data;   // start of line
+        fseek(Image, off ,SEEK_SET);
+        fread(line,1,PixelWidth * 2,Image);       // read a line - slow !
+        for (i = 0; i < PixelWidth; i++) {        // copy pixel data to TFT
+            _spi.write(line[i]);                  // one 16 bit pixel
+        } 
+     }
+    _cs = 1;
+    _spi.format(8,3);
+    free (line);
+    fclose(Image);
+    WindowMax();
+    return(1);
+}
\ No newline at end of file