Diff: SPI_TFTx2_ILI9341.cpp

Revision:

8:66cf46ec1225

Parent:

7:4c30bea883bc

Child:

9:522e742e62eb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SPI_TFTx2_ILI9341.cpp	Mon May 12 00:53:43 2014 +0000
@@ -0,0 +1,813 @@
+/* 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_TFTx2 code because controller is different ...
+// 14.07.13 Test with real display and bugfix 
+// 18.10.13 Better Circle function from Michael Ammann
+// 22.10.13 Fixes for Kinetis Board - 8 bit spi
+// 26.01.14 Change interface for BMP_16 to also use SD-cards
+
+#include "SPI_TFTx2_ILI9341.h"
+#include "mbed.h"
+
+#define BPP         16                  // Bits per pixel    
+         
+//extern Serial pc;
+//extern DigitalOut xx;     // debug !!
+
+SPI_TFTx2_ILI9341::SPI_TFTx2_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)
+{
+    clk = sclk;
+    orientation = 0;
+    char_x = 0;
+    tft_reset();
+}
+
+int SPI_TFTx2_ILI9341::width()
+{
+    if (orientation == 0 || orientation == 2) return 240;
+    else return 320;
+}
+
+
+int SPI_TFTx2_ILI9341::height()
+{
+    if (orientation == 0 || orientation == 2) return 320;
+    else return 240;
+}
+
+
+void SPI_TFTx2_ILI9341::set_orientation(unsigned int o)
+{
+    orientation = o;
+    wr_cmd(0x36);                     // MEMORY_ACCESS_CONTROL
+    switch (orientation) {
+        case 0:
+            _spi.write(0x48);
+            break;
+        case 1:
+            _spi.write(0x28);
+            break;
+        case 2:
+            _spi.write(0x88);
+            break;
+        case 3:
+            _spi.write(0xE8);
+            break;
+    }
+    _cs = 1; 
+    WindowMax();
+} 
+
+
+// write command to tft register
+
+void SPI_TFTx2_ILI9341::wr_cmd(unsigned char cmd)
+{
+    _dc = 0;
+    _cs = 0;
+    _spi.write(cmd);      // mbed lib
+    _dc = 1;
+}
+
+
+
+void SPI_TFTx2_ILI9341::wr_dat(unsigned char dat)
+{
+   _spi.write(dat);      // mbed lib
+}
+
+
+
+// the ILI9341 can read 
+
+char SPI_TFTx2_ILI9341::rd_byte(unsigned char cmd)
+{
+    char r;
+    _dc = 0;
+    _cs = 0;
+    _spi.write(cmd);      // mbed lib
+    _cs = 1;
+    r = _spi.write(0xff);
+    _cs = 1;    
+    return(r);
+}
+
+// read 32 bit
+int SPI_TFTx2_ILI9341::rd_32(unsigned char cmd)
+{
+    int d;
+    char r;
+    _dc = 0;
+    _cs = 0;
+    d = cmd;
+    d = d << 1;
+    _spi.format(9,3);    // we have to add a dummy clock cycle
+    _spi.write(d);
+    _spi.format(8,3);   
+    _dc = 1;
+    r = _spi.write(0xff);
+    d = r;
+    r = _spi.write(0xff);
+    d = (d << 8) | r;
+    r = _spi.write(0xff);
+    d = (d << 8) | r;
+    r = _spi.write(0xff);
+    d = (d << 8) | r;
+    _cs = 1;    
+    return(d);
+}
+
+int  SPI_TFTx2_ILI9341::Read_ID(void){
+    int r;
+    r = rd_byte(0x0A);
+    r = rd_byte(0x0A);
+    r = rd_byte(0x0A);
+    r = rd_byte(0x0A);
+    return(r);
+}
+
+
+// Init code based on MI0283QT datasheet
+
+void SPI_TFTx2_ILI9341::tft_reset()
+{
+    _spi.format(8,3);                  // 8 bit spi mode 3
+    _spi.frequency(10000000);          // 10 Mhz SPI clock
+    _cs = 1;                           // cs high
+    _dc = 1;                           // dc high 
+    _reset = 0;                        // display reset
+
+    wait_us(50);
+    _reset = 1;                       // end hardware reset
+    wait_ms(5);
+     
+    wr_cmd(0x01);                     // SW reset  
+    wait_ms(5);
+    wr_cmd(0x28);                     // display off  
+
+    /* Start Initial Sequence ----------------------------------------------------*/
+     wr_cmd(0xCF);                     
+     _spi.write(0x00);
+     _spi.write(0x83);
+     _spi.write(0x30);
+     _cs = 1;
+     
+     wr_cmd(0xED);                     
+     _spi.write(0x64);
+     _spi.write(0x03);
+     _spi.write(0x12);
+     _spi.write(0x81);
+     _cs = 1;
+     
+     wr_cmd(0xE8);                     
+     _spi.write(0x85);
+     _spi.write(0x01);
+     _spi.write(0x79);
+     _cs = 1;
+     
+     wr_cmd(0xCB);                     
+     _spi.write(0x39);
+     _spi.write(0x2C);
+     _spi.write(0x00);
+     _spi.write(0x34);
+     _spi.write(0x02);
+     _cs = 1;
+           
+     wr_cmd(0xF7);                     
+     _spi.write(0x20);
+     _cs = 1;
+           
+     wr_cmd(0xEA);                     
+     _spi.write(0x00);
+     _spi.write(0x00);
+     _cs = 1;
+     
+     wr_cmd(0xC0);                     // POWER_CONTROL_1
+     _spi.write(0x26);
+     _cs = 1;
+ 
+     wr_cmd(0xC1);                     // POWER_CONTROL_2
+     _spi.write(0x11);
+     _cs = 1;
+     
+     wr_cmd(0xC5);                     // VCOM_CONTROL_1
+     _spi.write(0x35);
+     _spi.write(0x3E);
+     _cs = 1;
+     
+     wr_cmd(0xC7);                     // VCOM_CONTROL_2
+     _spi.write(0xBE);
+     _cs = 1; 
+     
+     wr_cmd(0x36);                     // MEMORY_ACCESS_CONTROL
+     _spi.write(0x48);
+     _cs = 1; 
+     
+     wr_cmd(0x3A);                     // COLMOD_PIXEL_FORMAT_SET
+     _spi.write(0x55);                 // 16 bit pixel 
+     _cs = 1;
+     
+     wr_cmd(0xB1);                     // Frame Rate
+     _spi.write(0x00);
+     _spi.write(0x1B);               
+     _cs = 1;
+     
+     wr_cmd(0xF2);                     // Gamma Function Disable
+     _spi.write(0x08);
+     _cs = 1; 
+     
+     wr_cmd(0x26);                     
+     _spi.write(0x01);                 // gamma set for curve 01/2/04/08
+     _cs = 1; 
+     
+     wr_cmd(0xE0);                     // positive gamma correction
+     _spi.write(0x1F); 
+     _spi.write(0x1A); 
+     _spi.write(0x18); 
+     _spi.write(0x0A); 
+     _spi.write(0x0F); 
+     _spi.write(0x06); 
+     _spi.write(0x45); 
+     _spi.write(0x87); 
+     _spi.write(0x32); 
+     _spi.write(0x0A); 
+     _spi.write(0x07); 
+     _spi.write(0x02); 
+     _spi.write(0x07);
+     _spi.write(0x05); 
+     _spi.write(0x00);
+     _cs = 1;
+     
+     wr_cmd(0xE1);                     // negativ gamma correction
+     _spi.write(0x00); 
+     _spi.write(0x25); 
+     _spi.write(0x27); 
+     _spi.write(0x05); 
+     _spi.write(0x10); 
+     _spi.write(0x09); 
+     _spi.write(0x3A); 
+     _spi.write(0x78); 
+     _spi.write(0x4D); 
+     _spi.write(0x05); 
+     _spi.write(0x18); 
+     _spi.write(0x0D); 
+     _spi.write(0x38);
+     _spi.write(0x3A); 
+     _spi.write(0x1F);
+     _cs = 1;
+     
+     WindowMax ();
+     
+     //wr_cmd(0x34);                     // tearing effect off
+     //_cs = 1;
+     
+     //wr_cmd(0x35);                     // tearing effect on
+     //_cs = 1;
+      
+     wr_cmd(0xB7);                       // entry mode
+     _spi.write(0x07);
+     _cs = 1;
+     
+     wr_cmd(0xB6);                       // display function control
+     _spi.write(0x0A);
+     _spi.write(0x82);
+     _spi.write(0x27);
+     _spi.write(0x00);
+     _cs = 1;
+     
+     wr_cmd(0x11);                     // sleep out
+     _cs = 1;
+     
+     wait_ms(100);
+     
+     wr_cmd(0x29);                     // display on
+     _cs = 1;
+     
+     wait_ms(100);
+     
+ }
+
+
+void SPI_TFTx2_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
+    #if defined TARGET_KL25Z  // 8 Bit SPI
+    _spi.write(color >> 8);
+    _spi.write(color & 0xff);
+    #else 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    _spi.write(color);                              // Write D0..D15
+    _spi.format(8,3);
+    #endif
+    _cs = 1;
+}
+
+
+void SPI_TFTx2_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_TFTx2_ILI9341::WindowMax (void)
+{
+    window (0, 0, width(),  height());
+}
+
+
+
+void SPI_TFTx2_ILI9341::cls (void)
+{
+    int pixel = ( width() * height());
+    WindowMax();
+    wr_cmd(0x2C);  // send pixel
+    #if defined TARGET_KL25Z  // 8 Bit SPI
+    unsigned int i;
+    for (i = 0; i < ( width() * height()); i++){
+        _spi.write(_background >> 8);
+        _spi.write(_background & 0xff);
+        }
+    
+    #else 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    unsigned int i;
+    for (i = 0; i < ( width() * height()); i++)
+        _spi.write(_background);
+    _spi.format(8,3);    
+    #endif                         
+    _cs = 1; 
+}
+
+
+void SPI_TFTx2_ILI9341::circle(int x0, int y0, int r, int color)
+{
+
+    int x = -r, y = 0, err = 2-2*r, e2;
+    do {
+        pixel(x0-x, y0+y,color);
+        pixel(x0+x, y0+y,color);
+        pixel(x0+x, y0-y,color);
+        pixel(x0-x, y0-y,color);
+        e2 = err;
+        if (e2 <= y) {
+            err += ++y*2+1;
+            if (-x == y && e2 <= x) e2 = 0;
+        }
+        if (e2 > x) err += ++x*2+1;
+    } while (x <= 0);
+
+}
+
+void SPI_TFTx2_ILI9341::fillcircle(int x0, int y0, int r, int color)
+{
+    int x = -r, y = 0, err = 2-2*r, e2;
+    do {
+        vline(x0-x, y0-y, y0+y, color);
+        vline(x0+x, y0-y, y0+y, color);
+        e2 = err;
+        if (e2 <= y) {
+            err += ++y*2+1;
+            if (-x == y && e2 <= x) e2 = 0;
+        }
+        if (e2 > x) err += ++x*2+1;
+    } while (x <= 0);
+}
+
+
+void SPI_TFTx2_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
+    #if defined TARGET_KL25Z  // 8 Bit SPI
+    int j;
+    for (j=0; j<w; j++) {
+        _spi.write(color >> 8);
+        _spi.write(color & 0xff);
+    } 
+    #else 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    int j;
+    for (j=0; j<w; j++) {
+        _spi.write(color);
+    }
+    _spi.format(8,3);
+    #endif
+    _cs = 1;
+    WindowMax();
+    return;
+}
+
+void SPI_TFTx2_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
+    #if defined TARGET_KL25Z  // 8 Bit SPI
+    for (int y=0; y<h; y++) {
+        _spi.write(color >> 8);
+        _spi.write(color & 0xff);
+    } 
+    #else 
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    for (int y=0; y<h; y++) {
+        _spi.write(color);
+    }
+    _spi.format(8,3);
+    #endif
+    _cs = 1;
+    WindowMax();
+    return;
+}
+
+
+
+void SPI_TFTx2_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_TFTx2_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_TFTx2_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 
+    #if defined TARGET_KL25Z  // 8 Bit SPI
+    for (int p=0; p<pixel; p++) {
+        _spi.write(color >> 8);
+        _spi.write(color & 0xff);
+    }
+   #else
+    _spi.format(16,3);                            // switch to 16 bit Mode 3
+    for (int p=0; p<pixel; p++) {
+        _spi.write(color);
+    }
+    _spi.format(8,3);
+    #endif
+    _cs = 1;
+    WindowMax();
+    return;
+}
+
+
+void SPI_TFTx2_ILI9341::locate(int x, int y)
+{
+    char_x = x;
+    char_y = y;
+}
+
+
+
+int SPI_TFTx2_ILI9341::columns()
+{
+    return width() / font[1];
+}
+
+
+
+int SPI_TFTx2_ILI9341::rows()
+{
+    return height() / font[2];
+}
+
+
+
+int SPI_TFTx2_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_TFTx2_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
+    #ifndef TARGET_KL25Z  // 16 Bit SPI 
+    _spi.format(16,3);   
+    #endif                         // 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) {
+               #ifndef TARGET_KL25Z  // 16 Bit SPI 
+                _spi.write(_background);
+               #else
+                _spi.write(_background >> 8);
+                _spi.write(_background & 0xff);
+                #endif
+            } else {
+                #ifndef TARGET_KL25Z  // 16 Bit SPI
+                _spi.write(_foreground);
+                #else
+                _spi.write(_foreground >> 8);
+                _spi.write(_foreground & 0xff);
+                #endif
+            }
+        }
+    }
+    _cs = 1;
+    #ifndef TARGET_KL25Z  // 16 Bit SPI
+    _spi.format(8,3);
+    #endif
+    WindowMax();
+    if ((w + 2) < hor) {                   // x offset to next char
+        char_x += w + 2;
+    } else char_x += hor;
+}
+
+
+void SPI_TFTx2_ILI9341::set_font(unsigned char* f)
+{
+    font = f;
+}
+
+
+
+void SPI_TFTx2_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;
+    #if defined TARGET_KL25Z  // 8 Bit SPI
+        unsigned short pix_temp;
+    #endif
+    
+    unsigned int i;
+    
+    // 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);
+    bitmap_ptr += ((h - 1)* (w + padd));
+    wr_cmd(0x2C);  // send pixel
+    #ifndef TARGET_KL25Z  // 16 Bit SPI 
+    _spi.format(16,3);
+    #endif                            // switch to 16 bit Mode 3
+    for (j = 0; j < h; j++) {         //Lines
+        for (i = 0; i < w; i++) {     // one line
+            #if defined TARGET_KL25Z  // 8 Bit SPI
+                pix_temp = *bitmap_ptr;
+                _spi.write(pix_temp >> 8);
+                _spi.write(pix_temp);
+                bitmap_ptr++;
+            #else
+                _spi.write(*bitmap_ptr);    // one line
+                bitmap_ptr++;
+            #endif
+        }
+        bitmap_ptr -= 2*w;
+        bitmap_ptr -= padd;
+    }
+    _cs = 1;
+    #ifndef TARGET_KL25Z  // 16 Bit SPI 
+    _spi.format(8,3);
+    #endif
+    WindowMax();
+}
+
+
+// local filesystem is not implemented in kinetis board , but you can add a SD card
+
+int SPI_TFTx2_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
+    i=0;
+    while (*Name_BMP!='\0') {
+        filename[i++]=*Name_BMP++;
+    }
+    filename[i] = 0;  
+    
+    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);
+
+    window(x, y,PixelWidth ,PixelHeigh);
+    wr_cmd(0x2C);  // send pixel
+    #ifndef TARGET_KL25Z // only 8 Bit SPI 
+    _spi.format(16,3);  
+    #endif                          // 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
+        #ifndef TARGET_KL25Z // only 8 Bit SPI
+            _spi.write(line[i]);                  // one 16 bit pixel
+        #else  
+            _spi.write(line[i] >> 8);
+            _spi.write(line[i]);
+        #endif    
+        } 
+     }
+    _cs = 1;
+    _spi.format(8,3);
+    free (line);
+    fclose(Image);
+    WindowMax();
+    return(1);
+}