Stepan Smejkal
Lib for the new LCD Display with ILI9341 controller
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