my SPI_TFT_ILI9341 lib
Fork of SPI_TFT_ILI9341 by
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