aitendo T18003T01-V2,TFT1.8,SPI,FRDM-KL25Z
Dependents: FRDM_SPI18TFT_demo
Fork of ST7735_TFT by
Diff: ST7735_TFT.cpp
- Revision:
- 2:047ca9682450
- Parent:
- 1:967235e6fd48
--- a/ST7735_TFT.cpp Sun Dec 11 21:18:21 2011 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,814 +0,0 @@ - /* mbed library for 128*160 pixel display TFT based on ST7735 LCD Controller - * ST7735 specific routines (initialization, window addressing, pixel output) - * Copyright (c) 2011 Jonne Valola - * - * WARNING !! WORK IN PROGRESS !!! - * - * Graphics routines and SPI routines derived work used with permission from: - * mbed library for 240*320 pixel display TFT based on HX8347D LCD Controller - * Copyright (c) 2011 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. - */ - - -#include "ST7735_TFT.h" -#include "mbed.h" - -#define BPP 16 // Bits per pixel - -ST7735_TFT::ST7735_TFT(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName rs, PinName reset, const char *name) - : _spi(mosi, miso, sclk), _cs(cs), _rs(rs), _reset(reset),GraphicsDisplay(name) { - tft_reset(); - orientation = 2; - char_x = 0; -} - - -int ST7735_TFT::width() { - if (orientation == 0 || orientation == 2) return 128; - else return 160; -} - - -int ST7735_TFT::height() { - if (orientation == 0 || orientation == 2) return 160; - else return 128; -} - - -void ST7735_TFT::set_orientation(unsigned int o) { - orientation = o; - switch (orientation) { - case 0: - wr_reg(ST7735_MADCTL, 0x0008); - break; - case 1: - wr_reg(ST7735_MADCTL, 0x0068); - break; - case 2: - wr_reg(ST7735_MADCTL, 0x00C8); - break; - case 3: - wr_reg(ST7735_MADCTL, 0x00A8); - break; - } -} - - - -void ST7735_TFT::wr_cmd(int cmd) { - _rs = 0; // rs low, cs low for transmitting command - _cs = 0; - _spi.write(cmd); - _cs = 1; -} - - - -void ST7735_TFT::wr_dat(int dat) { - _rs = 1; // rs high, cs low for transmitting data - _cs = 0; - _spi.write(dat); - _cs = 1; -} - - - -void ST7735_TFT::wr_dat_start(void) { - _rs = 1; // rs high, cs low for transmitting data - _cs = 0; -} - - - -void ST7735_TFT::wr_dat_stop (void) { - _cs = 1; -} - - - -void ST7735_TFT::wr_dat_only (unsigned short dat) { - _spi.write(dat); -} - - -unsigned short ST7735_TFT::rd_dat (void) { - unsigned short val = 0; - _cs = 0; - _spi.write(0); /* Dummy read 1 */ - val = _spi.write(0); /* Read D8..D15 */ - val <<= 8; - val |= _spi.write(0); /* Read D0..D7 */ - _cs = 1; - return (val); -} - -void ST7735_TFT::wr_reg (unsigned char reg, unsigned short val) { - - wr_cmd(reg); - wr_dat(val); -} - - -unsigned short ST7735_TFT::rd_reg (unsigned char reg) { - - wr_cmd(reg); - return(rd_dat()); -} - -void ST7735_TFT::read_area(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *buffer) { - // BEWARE ! - // DOES NOT WORK CORRECTLY YET !!! - int val; - window(x,y,w,h); - wr_cmd(ST7735_RAMRD); // write to RAM - _cs = 0; - _rs = 1; - _spi.write(0); /* Dummy read 1 */ - - val = _spi.write(0); /* Read D8..D15 */ - val <<= 8; - val |= _spi.write(0); /* Read D0..D7 */ - _cs = 1; -} - -int ST7735_TFT::getpixel(unsigned int x, unsigned int y) { - // BEWARE ! - // DOES NOT WORK CORRECTLY YET !!! - int val; - _spi.format(8,3); - wr_cmd(ST7735_CASET); // column addr set - wr_dat(0x00); - wr_dat(x+2); // XSTART - wr_dat(0x00); - wr_dat(x+2+2); // XEND - - wr_cmd(ST7735_RASET); // row addr set - wr_dat(0x00); - wr_dat(y+1); // YSTART - wr_dat(0x00); - wr_dat(y+1+1); // YEND - - _rs = 0; // rs low, cs low for transmitting command - _cs = 0; - _spi.write(0x2E); - _rs = 1; - _spi.write(0x00); /* Dummy read 1 */ - - val = _spi.write(0x00); /* Read D8..D15 */ - val <<= 8; - val |= _spi.write(0x00); /* Read D0..D7 */ - - _cs = 1; - return val; -} - - -void ST7735_TFT::tft_reset() { - static unsigned short driverCode; - - // init SPI - _spi.format(8,3); // 8 bit spi mode 3 - _spi.frequency(16000000); // 16Mhz SPI clock ... 15Mhz is maximum for display, but it seems to work - - // reset exactly like in Arduino version - _cs = 0; - _reset = 1; // reset - wait_ms(500); - _reset = 0; // reset - wait_ms(500); - _reset = 1; // reset - wait_ms(500); - - /* Start Initial Sequence ----------------------------------------------------*/ - wr_cmd(ST7735_SWRESET); /* SW Reset */ - wait_ms(150); - wr_cmd(ST7735_SLPOUT); /* Out of sleepmode */ - wait_ms(500); - - wr_cmd(ST7735_FRMCTR1); /* Frame rate in normal mode */ - wr_dat(0x01); - wr_dat(0x2C); - wr_dat(0x2D); - - wr_cmd(ST7735_FRMCTR2); /* Frame rate in idle mode */ - wr_dat(0x01); - wr_dat(0x2C); - wr_dat(0x2D); - - wr_cmd(ST7735_FRMCTR3); /* Frame rate in partial mode */ - wr_dat(0x01); - wr_dat(0x2C); - wr_dat(0x2D); - wr_dat(0x01); // inversion mode settings - wr_dat(0x2C); - wr_dat(0x2D); - - wr_cmd(ST7735_INVCTR); // Inverted mode off - wr_dat(0x07); - - wr_cmd(ST7735_PWCTR1); // POWER CONTROL 1 - wr_dat(0xA2); - wr_dat(0x02); // -4.6V - wr_dat(0x84); // AUTO mode - - wr_cmd(ST7735_PWCTR2); // POWER CONTROL 2 - wr_dat(0xC5); // VGH25 = 2.4C VGSEL =-10 VGH = 3*AVDD - - wr_cmd(ST7735_PWCTR3); // POWER CONTROL 3 - wr_dat(0x0A); // Opamp current small - wr_dat(0x00); // Boost freq - - wr_cmd(ST7735_PWCTR4); // POWER CONTROL 4 - wr_dat(0x8A); // BCLK/2, Opamp current small / medium low - wr_dat(0x2A); // - - wr_cmd(ST7735_PWCTR5); // POWER CONTROL 5 - wr_dat(0x8A); // BCLK/2, Opamp current small / medium low - wr_dat(0xEE); // - - wr_cmd(ST7735_VMCTR1); // POWER CONTROL 6 - wr_dat(0x0E); // - - wr_cmd(ST7735_INVOFF); // INVOFF - - wr_cmd(ST7735_MADCTL); // ORIENTATION - wr_dat(0xC8); // - - wr_cmd(ST7735_COLMOD); // COLOR MODE - wr_dat(0x05); // - - wr_cmd(ST7735_CASET); // COLUMN ADDR SET - wr_dat(0x00); // - wr_dat(0x00); // xstart = 0 - wr_dat(0x00); // - wr_dat(0x7F); // xend = 127 - - wr_cmd(ST7735_RASET); // ROW ADDR SET - wr_dat(0x00); // - wr_dat(0x00); // ystart = 0 - wr_dat(0x00); // - wr_dat(0x9F); // yend = 159 - - /* Gamma settings -----------------------------------------------------------*/ - - wr_cmd(0xE0); // GMCTRP1 - wr_dat(0x02); - wr_dat(0x1c); - wr_dat(0x07); - wr_dat(0x12); - wr_dat(0x37); - wr_dat(0x32); - wr_dat(0x29); - wr_dat(0x2d); - wr_dat(0x29); - wr_dat(0x25); - wr_dat(0x2B); - wr_dat(0x39); - wr_dat(0x00); - wr_dat(0x01); - wr_dat(0x03); - wr_dat(0x10); - wr_cmd(0xE1); // GMCTRN1 - wr_dat(0x03); - wr_dat(0x1d); - wr_dat(0x07); - wr_dat(0x06); - wr_dat(0x2E); - wr_dat(0x2C); - wr_dat(0x29); - wr_dat(0x2D); - wr_dat(0x2E); - wr_dat(0x2E); - wr_dat(0x37); - wr_dat(0x3F); - wr_dat(0x00); - wr_dat(0x00); - wr_dat(0x02); - wr_dat(0x10); - - wr_cmd(ST7735_DISPON); // display ON - wait_ms(100); - - wr_cmd(ST7735_NORON); // normal display on - wait_ms(10); - - switch (orientation) { - case 0: - wr_reg(0xC8, 0x0008); - break; - case 1: - wr_reg(0xC8, 0x0068); - break; - case 2: - wr_reg(0xC8, 0x00C8); - break; - case 3: - wr_reg(0xC8, 0x00A8); - break; - } - WindowMax (); -} - - -void ST7735_TFT::pixel(int x, int y, int color) { - if ((x >= width()) || (y >= height())) return; - - window(x,y,x+1,y+1); - - // setup for data - _rs = 1; - _cs = 0; - _spi.format(16,3); - _spi.write(color); - _cs = 1; - _spi.format(8,3); -} - -void ST7735_TFT::window (unsigned int x, unsigned int y, unsigned int w, unsigned int h) { - wr_cmd(ST7735_CASET); // column addr set - wr_dat(0x00); - wr_dat(x+2); // XSTART - wr_dat(0x00); - wr_dat(x+w+1); // XEND - - wr_cmd(ST7735_RASET); // row addr set - wr_dat(0x00); - wr_dat(y+1); // YSTART - wr_dat(0x00); - wr_dat(y+h+1); // YEND - - wr_cmd(ST7735_RAMWR); // write to RAM -} - - -void ST7735_TFT::WindowMax (void) { - window (0, 0, width(), height()); -} - - -void ST7735_TFT::cls (void) { - unsigned int i; - WindowMax(); - wr_dat_start(); - _spi.format(16,3); - for (i = 0; i < ( (width()+1) * (height()+3)); i++) { - _spi.write(_background); - } - _spi.format(8,3); - wr_dat_stop(); -} - - -void ST7735_TFT::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 ST7735_TFT::fillcircle(int x, int y, int r, int color) { - int i; - for (i = 0; i <= r; i++) - circle(x,y,i,color); -} - - - -void ST7735_TFT::hline(int x0, int x1, int y, int color) { - int w; - w = x1 - x0 + 1; - window(x0,y,w,1); - wr_cmd(0x2C); - wr_dat_start(); - for (int x=0; x<w; x++) { - _spi.write(color); - _spi.write(color >> 8); - } - wr_dat_stop(); - return; -} - - - -void ST7735_TFT::vline(int x, int y0, int y1, int color) { - int h; - h = y1 - y0 + 1; - window(x,y0,1,h); - wr_cmd(0x2C); - wr_dat_start(); - for (int y=0; y<h; y++) { - _spi.write(color); - _spi.write(color >> 8); - } - wr_dat_stop(); - return; -} - - - -void ST7735_TFT::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 ST7735_TFT::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 ST7735_TFT::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); - wr_dat_start(); - for (int p=0; p<pixel; p++) { - _spi.write(color); - _spi.write(color >> 8); - } - wr_dat_stop(); - return; -} - - - -void ST7735_TFT::locate(int x, int y) { - char_x = x; - char_y = y; -} - - - -int ST7735_TFT::columns() { - return width() / font[1]; -} - - - -int ST7735_TFT::rows() { - return height() / font[2]; -} - - - -int ST7735_TFT::_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 ST7735_TFT::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); - wr_dat_start(); - zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap - w = zeichen[0]; // width of actual char - _spi.format(16,3); // pixel are 16 bit - - 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); - } - } - } - _spi.format(8,3); // 8 bit - wr_dat_stop(); - if ((w + 2) < hor) { // x offset to next char - char_x += w + 2; - } else char_x += hor; -} - - - - - -void ST7735_TFT::set_font(unsigned char* f) { - font = f; -} - - - -void ST7735_TFT::Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap) { - unsigned int i,j,value; - unsigned short *bitmap_ptr = (unsigned short *)bitmap; - window(x, y, w, h); - wr_cmd(0x2C); - wr_dat_start(); - for (j = 0; j < h; j++) { //Lines - for (i = 0; i < w; i++) { // copy pixel data to TFT - _spi.write(*bitmap_ptr); // one line - _spi.write(*bitmap_ptr >> 8); - bitmap_ptr++; - } - } - wr_dat_stop(); -} - - -int ST7735_TFT::BMP_16(unsigned int x, unsigned int y, const char *Name_BMP) { -// BEWARE ! -// NOT TESTED -#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++; - } - FILE *Image = fopen((const char *)&filename[0], "r"); // 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 (PixelWidth); // we need a buffer for a line - if (line == NULL) { - return(-4); // error no memory - } - - // the 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); - wr_dat_start(); - _spi.format(16,3); - 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 - } - } - _spi.format(8,3); - wr_dat_stop(); - free (line); - fclose(Image); - return(1); -} \ No newline at end of file