Library to control a QVGA TFT connected to SPI. You can use printf to print text The lib can handle different fonts, draw lines, circles, rect and bmp
Dependents: TFT_Test1 SourceCodePro31-SB Mandelbrot Mindwave-screen ... more
See http://mbed.org/cookbook/SPI-driven-QVGA-TFT for details.
Revision 0:de9d1462a835, committed 2012-09-10
- Comitter:
- dreschpe
- Date:
- Mon Sep 10 19:23:26 2012 +0000
- Child:
- 1:17e12e4e149f
- Commit message:
- [mbed] converted /TFT/SPI_TFT
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/GraphicsDisplay.cpp Mon Sep 10 19:23:26 2012 +0000 @@ -0,0 +1,176 @@ +/* mbed GraphicsDisplay Display Library Base Class + * Copyright (c) 2007-2009 sford + * Released under the MIT License: http://mbed.org/license/mit + */ + +#include "GraphicsDisplay.h" + +const unsigned char FONT8x8[97][8] = { +0x08,0x08,0x08,0x00,0x00,0x00,0x00,0x00, // columns, rows, num_bytes_per_char +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // space 0x20 +0x30,0x78,0x78,0x30,0x30,0x00,0x30,0x00, // ! +0x6C,0x6C,0x6C,0x00,0x00,0x00,0x00,0x00, // " +0x6C,0x6C,0xFE,0x6C,0xFE,0x6C,0x6C,0x00, // # +0x18,0x3E,0x60,0x3C,0x06,0x7C,0x18,0x00, // $ +0x00,0x63,0x66,0x0C,0x18,0x33,0x63,0x00, // % +0x1C,0x36,0x1C,0x3B,0x6E,0x66,0x3B,0x00, // & +0x30,0x30,0x60,0x00,0x00,0x00,0x00,0x00, // ' +0x0C,0x18,0x30,0x30,0x30,0x18,0x0C,0x00, // ( +0x30,0x18,0x0C,0x0C,0x0C,0x18,0x30,0x00, // ) +0x00,0x66,0x3C,0xFF,0x3C,0x66,0x00,0x00, // * +0x00,0x30,0x30,0xFC,0x30,0x30,0x00,0x00, // + +0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30, // , +0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // - +0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00, // . +0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00, // / (forward slash) +0x3E,0x63,0x63,0x6B,0x63,0x63,0x3E,0x00, // 0 0x30 +0x18,0x38,0x58,0x18,0x18,0x18,0x7E,0x00, // 1 +0x3C,0x66,0x06,0x1C,0x30,0x66,0x7E,0x00, // 2 +0x3C,0x66,0x06,0x1C,0x06,0x66,0x3C,0x00, // 3 +0x0E,0x1E,0x36,0x66,0x7F,0x06,0x0F,0x00, // 4 +0x7E,0x60,0x7C,0x06,0x06,0x66,0x3C,0x00, // 5 +0x1C,0x30,0x60,0x7C,0x66,0x66,0x3C,0x00, // 6 +0x7E,0x66,0x06,0x0C,0x18,0x18,0x18,0x00, // 7 +0x3C,0x66,0x66,0x3C,0x66,0x66,0x3C,0x00, // 8 +0x3C,0x66,0x66,0x3E,0x06,0x0C,0x38,0x00, // 9 +0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x00, // : +0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x30, // ; +0x0C,0x18,0x30,0x60,0x30,0x18,0x0C,0x00, // < +0x00,0x00,0x7E,0x00,0x00,0x7E,0x00,0x00, // = +0x30,0x18,0x0C,0x06,0x0C,0x18,0x30,0x00, // > +0x3C,0x66,0x06,0x0C,0x18,0x00,0x18,0x00, // ? +0x3E,0x63,0x6F,0x69,0x6F,0x60,0x3E,0x00, // @ 0x40 +0x18,0x3C,0x66,0x66,0x7E,0x66,0x66,0x00, // A +0x7E,0x33,0x33,0x3E,0x33,0x33,0x7E,0x00, // B +0x1E,0x33,0x60,0x60,0x60,0x33,0x1E,0x00, // C +0x7C,0x36,0x33,0x33,0x33,0x36,0x7C,0x00, // D +0x7F,0x31,0x34,0x3C,0x34,0x31,0x7F,0x00, // E +0x7F,0x31,0x34,0x3C,0x34,0x30,0x78,0x00, // F +0x1E,0x33,0x60,0x60,0x67,0x33,0x1F,0x00, // G +0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00, // H +0x3C,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // I +0x0F,0x06,0x06,0x06,0x66,0x66,0x3C,0x00, // J +0x73,0x33,0x36,0x3C,0x36,0x33,0x73,0x00, // K +0x78,0x30,0x30,0x30,0x31,0x33,0x7F,0x00, // L +0x63,0x77,0x7F,0x7F,0x6B,0x63,0x63,0x00, // M +0x63,0x73,0x7B,0x6F,0x67,0x63,0x63,0x00, // N +0x3E,0x63,0x63,0x63,0x63,0x63,0x3E,0x00, // O +0x7E,0x33,0x33,0x3E,0x30,0x30,0x78,0x00, // P 0x50 +0x3C,0x66,0x66,0x66,0x6E,0x3C,0x0E,0x00, // Q +0x7E,0x33,0x33,0x3E,0x36,0x33,0x73,0x00, // R +0x3C,0x66,0x30,0x18,0x0C,0x66,0x3C,0x00, // S +0x7E,0x5A,0x18,0x18,0x18,0x18,0x3C,0x00, // T +0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x00, // U +0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00, // V +0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00, // W +0x63,0x63,0x36,0x1C,0x1C,0x36,0x63,0x00, // X +0x66,0x66,0x66,0x3C,0x18,0x18,0x3C,0x00, // Y +0x7F,0x63,0x46,0x0C,0x19,0x33,0x7F,0x00, // Z +0x3C,0x30,0x30,0x30,0x30,0x30,0x3C,0x00, // [ +0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00, // \ (back slash) +0x3C,0x0C,0x0C,0x0C,0x0C,0x0C,0x3C,0x00, // ] +0x08,0x1C,0x36,0x63,0x00,0x00,0x00,0x00, // ^ +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF, // _ +0x18,0x18,0x0C,0x00,0x00,0x00,0x00,0x00, // ` 0x60 +0x00,0x00,0x3C,0x06,0x3E,0x66,0x3B,0x00, // a +0x70,0x30,0x3E,0x33,0x33,0x33,0x6E,0x00, // b +0x00,0x00,0x3C,0x66,0x60,0x66,0x3C,0x00, // c +0x0E,0x06,0x3E,0x66,0x66,0x66,0x3B,0x00, // d +0x00,0x00,0x3C,0x66,0x7E,0x60,0x3C,0x00, // e +0x1C,0x36,0x30,0x78,0x30,0x30,0x78,0x00, // f +0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x7C, // g +0x70,0x30,0x36,0x3B,0x33,0x33,0x73,0x00, // h +0x18,0x00,0x38,0x18,0x18,0x18,0x3C,0x00, // i +0x06,0x00,0x06,0x06,0x06,0x66,0x66,0x3C, // j +0x70,0x30,0x33,0x36,0x3C,0x36,0x73,0x00, // k +0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // l +0x00,0x00,0x66,0x7F,0x7F,0x6B,0x63,0x00, // m +0x00,0x00,0x7C,0x66,0x66,0x66,0x66,0x00, // n +0x00,0x00,0x3C,0x66,0x66,0x66,0x3C,0x00, // o +0x00,0x00,0x6E,0x33,0x33,0x3E,0x30,0x78, // p +0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x0F, // q +0x00,0x00,0x6E,0x3B,0x33,0x30,0x78,0x00, // r +0x00,0x00,0x3E,0x60,0x3C,0x06,0x7C,0x00, // s +0x08,0x18,0x3E,0x18,0x18,0x1A,0x0C,0x00, // t +0x00,0x00,0x66,0x66,0x66,0x66,0x3B,0x00, // u +0x00,0x00,0x66,0x66,0x66,0x3C,0x18,0x00, // v +0x00,0x00,0x63,0x6B,0x7F,0x7F,0x36,0x00, // w +0x00,0x00,0x63,0x36,0x1C,0x36,0x63,0x00, // x +0x00,0x00,0x66,0x66,0x66,0x3E,0x06,0x7C, // y +0x00,0x00,0x7E,0x4C,0x18,0x32,0x7E,0x00, // z +0x0E,0x18,0x18,0x70,0x18,0x18,0x0E,0x00, // { +0x0C,0x0C,0x0C,0x00,0x0C,0x0C,0x0C,0x00, // | +0x70,0x18,0x18,0x0E,0x18,0x18,0x70,0x00, // } +0x3B,0x6E,0x00,0x00,0x00,0x00,0x00,0x00, // ~ +0x1C,0x36,0x36,0x1C,0x00,0x00,0x00,0x00}; // DEL + +GraphicsDisplay::GraphicsDisplay(const char *name):TextDisplay(name) { + foreground(0xFFFF); + background(0x0000); +} + +void GraphicsDisplay::character(int column, int row, int value) { + blitbit(column * 8, row * 8, 8, 8, (char*)&(FONT8x8[value - 0x1F][0])); +} + +void GraphicsDisplay::window(int x, int y, int w, int h) { + // current pixel location + _x = x; + _y = y; + // window settings + _x1 = x; + _x2 = x + w - 1; + _y1 = y; + _y2 = y + h - 1; +} + +void GraphicsDisplay::putp(int colour) { + // put pixel at current pixel location + pixel(_x, _y, colour); + // update pixel location based on window settings + _x++; + if(_x > _x2) { + _x = _x1; + _y++; + if(_y > _y2) { + _y = _y1; + } + } +} + +void GraphicsDisplay::fill(int x, int y, int w, int h, int colour) { + window(x, y, w, h); + for(int i=0; i<w*h; i++) { + putp(colour); + } +} + +void GraphicsDisplay::cls() { + fill(0, 0, width(), height(), _background); +} + +void GraphicsDisplay::blit(int x, int y, int w, int h, const int *colour) { + window(x, y, w, h); + for(int i=0; i<w*h; i++) { + putp(colour[i]); + } +} + +void GraphicsDisplay::blitbit(int x, int y, int w, int h, const char* colour) { + window(x, y, w, h); + for(int i = 0; i < w*h; i++) { + char byte = colour[i >> 3]; + int offset = i & 0x7; + int c = ((byte << offset) & 0x80) ? _foreground : _background; + putp(c); + } +} + +int GraphicsDisplay::columns() { + return width() / 8; +} + +int GraphicsDisplay::rows() { + return height() / 8; +} +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/GraphicsDisplay.h Mon Sep 10 19:23:26 2012 +0000 @@ -0,0 +1,55 @@ +/* mbed GraphicsDisplay Display Library Base Class + * Copyright (c) 2007-2009 sford + * Released under the MIT License: http://mbed.org/license/mit + * + * A library for providing a common base class for Graphics displays + * To port a new display, derive from this class and implement + * the constructor (setup the display), pixel (put a pixel + * at a location), width and height functions. Everything else + * (locate, printf, putc, cls, window, putp, fill, blit, blitbit) + * will come for free. You can also provide a specialised implementation + * of window and putp to speed up the results + */ + +#ifndef MBED_GRAPHICSDISPLAY_H +#define MBED_GRAPHICSDISPLAY_H + +#include "TextDisplay.h" + +class GraphicsDisplay : public TextDisplay { + +public: + + GraphicsDisplay(const char* name); + + virtual void pixel(int x, int y, int colour) = 0; + virtual int width() = 0; + virtual int height() = 0; + + virtual void window(int x, int y, int w, int h); + virtual void putp(int colour); + + virtual void cls(); + virtual void fill(int x, int y, int w, int h, int colour); + virtual void blit(int x, int y, int w, int h, const int *colour); + virtual void blitbit(int x, int y, int w, int h, const char* colour); + + virtual void character(int column, int row, int value); + virtual int columns(); + virtual int rows(); + +protected: + + // pixel location + short _x; + short _y; + + // window location + short _x1; + short _x2; + short _y1; + short _y2; + +}; + +#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SPI_TFT.cpp Mon Sep 10 19:23:26 2012 +0000 @@ -0,0 +1,1053 @@ +/* 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. + */ + + +// fix bmp padding for Bitmap function +// speed up pixel +// 30.12.11 fix cls +// 11.03.12 use DMA to speed up +// 15.03.12 use SSEL for TFT CS to enable DMA Register writes +// 06.04.12 fix SSEL CS problem +// 06.04.12 use direct access to the spi register to speed up the library. + + +#include "SPI_TFT.h" +#include "mbed.h" + + +#define BPP 16 // Bits per pixel + + +//extern Serial pc; +//extern DigitalOut xx; // debug !! + +SPI_TFT::SPI_TFT(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset, const char *name) + : _spi(mosi, miso, sclk), _reset(reset),GraphicsDisplay(name) { + tft_reset(); + orientation = 0; + char_x = 0; + if (mosi == p11 || mosi == P0_18) spi_port = 0; // we must know the used SPI port to setup the DMA + else spi_port = 1; +} + +int SPI_TFT::width() { + if (orientation == 0 || orientation == 2) return 240; + else return 320; +} + + +int SPI_TFT::height() { + if (orientation == 0 || orientation == 2) return 320; + else return 240; +} + + +void SPI_TFT::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::wr_cmd(unsigned char cmd) { + unsigned short spi_d; + spi_d = 0x7000 | cmd ; + if (spi_port == 0) { // TFT on SSP0 + LPC_SSP0->DR = spi_d; + // we have to wait for SPI IDLE to get SSEL (CS) back to high + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle + } else { + LPC_SSP1->DR = spi_d; + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle + } + +} + + + +void SPI_TFT::wr_dat(unsigned char dat) { + unsigned short spi_d; + spi_d = 0x7200 | dat; + if (spi_port == 0) { // TFT on SSP0 + LPC_SSP0->DR = spi_d; + // we have to wait for SPI IDLE to get SSEL (CS) back to high + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle + } else { + LPC_SSP1->DR = spi_d; + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle + } +} + + + +// the HX8347-D controller do not use the MISO (SDO) Signal. +// The controller use the MOSI signal bidirectional. +// To read from the controller we have to make some bit banging + +unsigned short SPI_TFT::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::wr_reg (unsigned char reg, unsigned char val) { + wr_cmd(reg); + wr_dat(val); +} + +unsigned short SPI_TFT::rd_reg (unsigned char reg) { + wr_cmd(reg); + return(rd_dat()); +} + +void SPI_TFT::tft_reset() { + static unsigned short driverCode; + _spi.format(16,3); // 16 bit spi mode 3 + _spi.frequency(48000000); // 48 Mhz SPI clock + _reset = 0; // display reset + if (spi_port == 0) { // TFT on SSP0 + // Set up SSEL0 for CS + LPC_PINCON->PINSEL1 |= (1UL << 1); + } else { + // Set up SSEL1 + LPC_PINCON->PINSEL0 |= (1UL << 13); + } + wait_us(50); + _reset = 1; // end reset + wait_ms(5); + + /* Start Initial Sequence ----------------------------------------------------*/ + wr_reg(0xEA, 0x00); /* Reset Power Control 1 */ + wr_reg(0xEB, 0x20); /* Power Control 2 */ + wr_reg(0xEC, 0x0C); /* Power Control 3 */ + wr_reg(0xED, 0xC4); /* Power Control 4 */ + wr_reg(0xE8, 0x40); /* Source OPON_N */ + wr_reg(0xE9, 0x38); /* Source OPON_I */ + wr_reg(0xF1, 0x01); /* */ + wr_reg(0xF2, 0x10); /* */ + wr_reg(0x27, 0xA3); /* Display Control 2 */ + + /* Power On sequence ---------------------------------------------------------*/ + wr_reg(0x1B, 0x1B); /* Power Control 2 */ + wr_reg(0x1A, 0x01); /* Power Control 1 */ + wr_reg(0x24, 0x2F); /* Vcom Control 2 */ + wr_reg(0x25, 0x57); /* Vcom Control 3 */ + wr_reg(0x23, 0x8D); /* Vcom Control 1 */ + + /* Gamma settings -----------------------------------------------------------*/ + wr_reg(0x40,0x00); // + wr_reg(0x41,0x00); // + wr_reg(0x42,0x01); // + wr_reg(0x43,0x13); // + wr_reg(0x44,0x10); // + wr_reg(0x45,0x26); // + wr_reg(0x46,0x08); // + wr_reg(0x47,0x51); // + wr_reg(0x48,0x02); // + wr_reg(0x49,0x12); // + wr_reg(0x4A,0x18); // + wr_reg(0x4B,0x19); // + wr_reg(0x4C,0x14); // + wr_reg(0x50,0x19); // + wr_reg(0x51,0x2F); // + wr_reg(0x52,0x2C); // + wr_reg(0x53,0x3E); // + wr_reg(0x54,0x3F); // + wr_reg(0x55,0x3F); // + wr_reg(0x56,0x2E); // + wr_reg(0x57,0x77); // + wr_reg(0x58,0x0B); // + wr_reg(0x59,0x06); // + wr_reg(0x5A,0x07); // + wr_reg(0x5B,0x0D); // + wr_reg(0x5C,0x1D); // + wr_reg(0x5D,0xCC); // + + /* Power + Osc ---------------------------------------------------------------*/ + wr_reg(0x18, 0x0036); /* OSC Control 1 */ + wr_reg(0x19, 0x0001); /* OSC Control 2 */ + wr_reg(0x01, 0x0000); /* Display Mode Control */ + wr_reg(0x1F, 0x0088); /* Power Control 6 */ + wait_ms(5); /* Delay 5 ms */ + wr_reg(0x1F, 0x0080); /* Power Control 6 */ + wait_ms(5); /* Delay 5 ms */ + wr_reg(0x1F, 0x0090); /* Power Control 6 */ + wait_ms(5); /* Delay 5 ms */ + wr_reg(0x1F, 0x00D0); /* Power Control 6 */ + wait_ms(5); /* Delay 5 ms */ + + wr_reg(0x17, 0x0005); /* Colmod 16Bit/Pixel */ + + wr_reg(0x36, 0x0000); /* Panel Characteristic */ + wr_reg(0x28, 0x0038); /* Display Control 3 */ + wait_ms(40); + wr_reg(0x28, 0x003C); /* Display Control 3 */ + switch (orientation) { + case 0: + wr_reg(0x16, 0x0008); + break; + case 1: + wr_reg(0x16, 0x0068); + break; + case 2: + wr_reg(0x16, 0x00C8); + break; + case 3: + wr_reg(0x16, 0x00A8); + break; + } + + // setup DMA channel 0 + // Power up the GPDMA. + LPC_SC->PCONP |= (1UL << 29); + LPC_GPDMA->DMACConfig = 1; // enable DMA controller + // Reset the Interrupt status + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCLLI = 0; + + WindowMax (); +} + + + + +void SPI_TFT::pixel(int x, int y, int color) { + unsigned char u,l; + wr_reg(0x03, (x >> 0)); + wr_reg(0x02, (x >> 8)); + wr_reg(0x07, (y >> 0)); + wr_reg(0x06, (y >> 8)); + wr_cmd(0x22); + u = color >> 8; + l = color & 0xff; + + if (spi_port == 0) { // TFT on SSP0 + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->DR = u; // high byte + LPC_SSP0->DR = l; // low byte + LPC_SSP0->CR0 |= 0x08UL; // set back to 16 bit + // we have to wait for SPI IDLE to get SSEL (CS) back to high + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle + } else { + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->DR = u; + LPC_SSP1->DR = l; + LPC_SSP1->CR0 |= 0x08UL; // set back to 16 bit + // we have to wait for SPI IDLE to get SSEL (CS) back to high + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle + } +} + + +void SPI_TFT::window (unsigned int x, unsigned int y, unsigned int w, unsigned int h) { + wr_reg(0x03, x ); + wr_reg(0x02, (x >> 8)); + wr_reg(0x05, x+w-1 ); + wr_reg(0x04, (x+w-1 >> 8)); + wr_reg(0x07, y ); + wr_reg(0x06, ( y >> 8)); + wr_reg(0x09, ( y+h-1 )); + wr_reg(0x08, ( y+h-1 >> 8)); +} + + +void SPI_TFT::WindowMax (void) { + window (0, 0, width(), height()); +} + + +void SPI_TFT::cls (void) { + //unsigned int i + + int pixel = ( width() * height()); + int dma_count; + int color = _background; + WindowMax(); + wr_cmd(0x22); + + // The SSEL signal is held low until the spi FIFO is emty. + // We have to lower the SPI clock for the 8 bit start to get the spi running + // until the next data word + LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; + + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->CR0 |= 0x300UL; // clock div / 4 slow down to prevent a fifo emty + LPC_SSP0->DR = 0x72; // start byte + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP0->CR0 &= ~(0x300UL); // reset clock div + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP1->CR0 &= ~(0x300UL); // reset clock div + } + + // start DMA + do { + if (pixel > 4095) { + dma_count = 4095; + pixel = pixel - 4095; + } else { + dma_count = pixel; + pixel = 0; + } + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt + LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; + LPC_GPDMA->DMACSoftSReq = 0x1; // DMA request + + do { + } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running + + } while (pixel > 0); + if (spi_port == 0) { // TFT on SSP0 + do { + } while ((0x0010 & LPC_SSP0->SR) == 0x10); // SPI FIFO not empty + /* disable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x0; + } else { + do { + } while ((0x0010 & LPC_SSP1->SR) == 0x10); // SPI FIFO not empty + /* disable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x0; + } + +} + + +void SPI_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 SPI_TFT::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::hline(int x0, int x1, int y, int color) { + int w; + w = x1 - x0 + 1; + window(x0,y,w,1); + wr_cmd(0x22); + + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP0->CR0 &= ~(0x300UL); // reset clock div + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP1->CR0 &= ~(0x300UL); // reset clock div + } + + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; + LPC_GPDMACH0->DMACCControl = w | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt + LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; + LPC_GPDMA->DMACSoftSReq = 0x1; // start DMA + do { + } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running + if (spi_port == 0) { // TFT on SSP0 + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty + } else { + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty + } + WindowMax(); + return; +} + +void SPI_TFT::vline(int x, int y0, int y1, int color) { + int h; + h = y1 - y0 + 1; + window(x,y0,1,h); + wr_cmd(0x22); + + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP0->CR0 &= ~(0x300UL); // reset clock div + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP1->CR0 &= ~(0x300UL); // reset clock div + } + + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; + LPC_GPDMACH0->DMACCControl = h | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt + LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; + LPC_GPDMA->DMACSoftSReq = 0x1; + do { + } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running + + if (spi_port == 0) { // TFT on SSP0 + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty + } else { + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty + } + WindowMax(); + return; +} + + + +void SPI_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 SPI_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 SPI_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; + int dma_count; + window(x0,y0,w,h); + wr_cmd(0x22); + + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP0->CR0 &= ~(0x300UL); // reset clock div + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP1->CR0 &= ~(0x300UL); // reset clock div + } + + do { + if (pixel > 4095) { + dma_count = 4095; + pixel = pixel - 4095; + } else { + dma_count = pixel; + pixel = 0; + } + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; + LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt + LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; + LPC_GPDMA->DMACSoftSReq = 0x1; + do { + } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running + + } while (pixel > 0); + + if (spi_port == 0) { // TFT on SSP0 + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty + } else { + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty + } + + WindowMax(); + return; +} + + +void SPI_TFT::locate(int x, int y) { + char_x = x; + char_y = y; +} + + + +int SPI_TFT::columns() { + return width() / font[1]; +} + + + +int SPI_TFT::rows() { + return height() / font[2]; +} + + + +int SPI_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 SPI_TFT::character(int x, int y, int c) { + unsigned int hor,vert,offset,bpl,j,i,b,p; + unsigned char* zeichen; + unsigned char z,w; + unsigned int pixel; + unsigned int dma_count,dma_off; + uint16_t *buffer; + + 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(0x22); + + pixel = hor * vert; // calculate buffer size + + buffer = (uint16_t *) malloc (2*pixel); // we need a buffer for the 16 bit + if (buffer == NULL) { + //led = 1; + //pc.printf("Malloc error !\n\r"); + return; // error no memory + } + + zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap + w = zeichen[0]; // width of actual char + p = 0; + // construct the char into the buffer + 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) { + buffer[p] = _background; + } else { + buffer[p] = _foreground; + } + p++; + } + } + + + // copy the buffer with DMA SPI to display + dma_off = 0; // offset for DMA transfer + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP0->CR0 &= ~(0x300UL); // reset clock div + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP1->CR0 &= ~(0x300UL); // reset clock div + } + + // start DMA + do { + if (pixel > 4095) { // this is a giant font ! + dma_count = 4095; + pixel = pixel - 4095; + } else { + dma_count = pixel; + pixel = 0; + } + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + dma_off); + LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 16 bit transfer , address increment, interrupt + LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; + LPC_GPDMA->DMACSoftSReq = 0x1; + do { + } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running + dma_off = dma_off + dma_count; + } while (pixel > 0); + + free ((uint16_t *) buffer); + + if (spi_port == 0) { // TFT on SSP0 + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle + /* disable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x0; + } else { + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle + /* disable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x0; + } + + WindowMax(); + if ((w + 2) < hor) { // x offset to next char + char_x += w + 2; + } else char_x += hor; + +} + + +void SPI_TFT::set_font(unsigned char* f) { + font = f; +} + + + +void SPI_TFT::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(0x22); + + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP0->CR0 &= ~(0x300UL); // reset clock div + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP1->CR0 &= ~(0x300UL); // reset clock div + } + bitmap_ptr += ((h - 1)* (w + padd)); + for (j = 0; j < h; j++) { //Lines + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)bitmap_ptr; + LPC_GPDMACH0->DMACCControl = w | (1UL << 18) | (1UL << 21) | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 16 bit transfer , address increment, interrupt + LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; + LPC_GPDMA->DMACSoftSReq = 0x1; + do { + } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running + + bitmap_ptr -= w; + bitmap_ptr -= padd; + } + + if (spi_port == 0) { // TFT on SSP0 + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty + } else { + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty + } + + WindowMax(); +} + + +int SPI_TFT::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], "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 (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+1,PixelHeigh); + wr_cmd(0x22); + + 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 ! + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP0->CR0 &= ~(0x300UL); // reset clock div + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->CR0 |= 0x300UL; // clock div / 4 + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + LPC_SSP1->CR0 &= ~(0x300UL); // reset clock div + } + + LPC_GPDMA->DMACIntTCClear = 0x1; + LPC_GPDMA->DMACIntErrClr = 0x1; + LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)line; + LPC_GPDMACH0->DMACCControl = PixelWidth | (1UL << 18) | (1UL << 21) | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 16 bit transfer , address increment, interrupt + LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; + LPC_GPDMA->DMACSoftSReq = 0x1; + do { + } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running + + } + + if (spi_port == 0) { // TFT on SSP0 + do { + } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty + } else { + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty + } + + free (line); + fclose(Image); + WindowMax(); + return(1); +} \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SPI_TFT.h Mon Sep 10 19:23:26 2012 +0000 @@ -0,0 +1,405 @@ +/* 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. + */ + + /* change the char position handling + * use pixel (x,y) instadt of colum row */ + + +#ifndef MBED_SPI_TFT_H +#define MBED_SPI_TFT_H + + +#include "mbed.h" +#include "GraphicsDisplay.h" + +#define RGB(r,g,b) (((r&0xF8)<<8)|((g&0xFC)<<3)|((b&0xF8)>>3)) //5 red | 6 green | 5 blue + +#define SPI_START (0x70) /* Start byte for SPI transfer */ +#define SPI_RD (0x01) /* WR bit 1 within start */ +#define SPI_WR (0x00) /* WR bit 0 within start */ +#define SPI_DATA (0x02) /* RS bit 1 within start byte */ +#define SPI_INDEX (0x00) /* RS bit 0 within start byte */ + + +/* some RGB color definitions */ +#define Black 0x0000 /* 0, 0, 0 */ +#define Navy 0x000F /* 0, 0, 128 */ +#define DarkGreen 0x03E0 /* 0, 128, 0 */ +#define DarkCyan 0x03EF /* 0, 128, 128 */ +#define Maroon 0x7800 /* 128, 0, 0 */ +#define Purple 0x780F /* 128, 0, 128 */ +#define Olive 0x7BE0 /* 128, 128, 0 */ +#define LightGrey 0xC618 /* 192, 192, 192 */ +#define DarkGrey 0x7BEF /* 128, 128, 128 */ +#define Blue 0x001F /* 0, 0, 255 */ +#define Green 0x07E0 /* 0, 255, 0 */ +#define Cyan 0x07FF /* 0, 255, 255 */ +#define Red 0xF800 /* 255, 0, 0 */ +#define Magenta 0xF81F /* 255, 0, 255 */ +#define Yellow 0xFFE0 /* 255, 255, 0 */ +#define White 0xFFFF /* 255, 255, 255 */ +#define Orange 0xFD20 /* 255, 165, 0 */ +#define GreenYellow 0xAFE5 /* 173, 255, 47 */ + + +// some defines for the DMA use +#define DMA_CHANNEL_ENABLE 1 +#define DMA_TRANSFER_TYPE_M2P (1UL << 11) +#define DMA_CHANNEL_TCIE (1UL << 31) +#define DMA_CHANNEL_SRC_INC (1UL << 26) +#define DMA_MASK_IE (1UL << 14) +#define DMA_MASK_ITC (1UL << 15) +#define DMA_SSP1_TX (1UL << 2) +#define DMA_SSP0_TX (0) + + +/** Display control class, based on GraphicsDisplay and TextDisplay + * + * Example: + * @code + * #include "stdio.h" + * #include "mbed.h" + * #include "SPI_TFT.h" + * #include "string" + * #include "Arial12x12.h" + * #include "Arial24x23.h" + * + * + * + * // the TFT is connected to SPI pin 5-7 + * SPI_TFT TFT(p5, p6, p7, p8, p15,"TFT"); // mosi, miso, sclk, cs, reset + * + * int main() { + * TFT.claim(stdout); // send stdout to the TFT display + * //TFT.claim(stderr); // send stderr to the TFT display + * + * TFT.background(Black); // set background to black + * TFT.foreground(White); // set chars to white + * TFT.cls(); // clear the screen + * TFT.set_font((unsigned char*) Arial12x12); // select the font + * + * TFT.set_orientation(0); + * TFT.locate(0,0); + * printf(" Hello Mbed 0"); + * TFT.set_font((unsigned char*) Arial24x23); // select font 2 + * TFT.locate(48,115); + * TFT.printf("Bigger Font"); + * } + * @endcode + */ + class SPI_TFT : public GraphicsDisplay { + public: + + /** Create a SPI_TFT object connected to SPI and two pins + * + * @param mosi,miso,sclk SPI + * @param cs pin connected to CS of display + * @param reset pin connected to RESET of display + * + */ + SPI_TFT(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset,const char* name ="TFT"); + + /** Get the width of the screen in pixel + * + * @param + * @returns width of screen in pixel + * + */ + virtual int width(); + + /** Get the height of the screen in pixel + * + * @returns height of screen in pixel + * + */ + virtual int height(); + + /** Draw a pixel at x,y with color + * + * @param x horizontal position + * @param y vertical position + * @param color 16 bit pixel color + */ + virtual void pixel(int x, int y,int colour); + + /** draw a circle + * + * @param x0,y0 center + * @param r radius + * @param color 16 bit color * + * + */ + void circle(int x, int y, int r, int colour); + + /** draw a filled circle + * + * @param x0,y0 center + * @param r radius + * @param color 16 bit color * + * + * use circle with different radius, + * can miss some pixel + */ + void fillcircle(int x, int y, int r, int colour); + + + + /** draw a 1 pixel line + * + * @param x0,y0 start point + * @param x1,y1 stop point + * @param color 16 bit color + * + */ + void line(int x0, int y0, int x1, int y1, int colour); + + /** draw a rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color 16 bit color + * * + */ + void rect(int x0, int y0, int x1, int y1, int colour); + + /** draw a filled rect + * + * @param x0,y0 top left corner + * @param x1,y1 down right corner + * @param color 16 bit color + * + */ + void fillrect(int x0, int y0, int x1, int y1, int colour); + + /** setup cursor position + * + * @param x x-position (top left) + * @param y y-position + */ + void locate(int x, int y); + + /** Fill the screen with _backgroun color + * + */ + virtual void cls (void); + + /** calculate the max number of char in a line + * + * @returns max columns + * depends on actual font size + * + */ + int columns(void); + + /** calculate the max number of columns + * + * @returns max column + * depends on actual font size + * + */ + int rows(void); + + /** put a char on the screen + * + * @param value char to print + * @returns printed char + * + */ + int _putc(int value); + + /** draw a character on given position out of the active font to the TFT + * + * @param x x-position of char (top left) + * @param y y-position + * @param c char to print + * + */ + virtual void character(int x, int y, int c); + + /** paint a bitmap on the TFT + * + * @param x,y : upper left corner + * @param w width of bitmap + * @param h high of bitmap + * @param *bitmap pointer to the bitmap data + * + * bitmap format: 16 bit R5 G6 B5 + * + * use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5 + * use winhex to load this file and mark data stating at offset 0x46 to end + * use edit -> copy block -> C Source to export C array + * paste this array into your program + * + * define the array as static const unsigned char to put it into flash memory + * cast the pointer to (unsigned char *) : + * tft.Bitmap(10,40,309,50,(unsigned char *)scala); + */ + void Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap); + + + /** paint a 16 bit BMP from local filesytem on the TFT (slow) + * + * @param x,y : upper left corner + * @param *Name_BMP name of the BMP file + * @returns 1 if bmp file was found and painted + * @returns -1 if bmp file was found not found + * @returns -2 if bmp file is not 16bit + * @returns -3 if bmp file is to big for screen + * @returns -4 if buffer malloc go wrong + * + * bitmap format: 16 bit R5 G6 B5 + * + * use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5 + * copy to internal file system + * + */ + + int BMP_16(unsigned int x, unsigned int y, const char *Name_BMP); + + + + /** select the font to use + * + * @param f pointer to font array + * + * font array can created with GLCD Font Creator from http://www.mikroe.com + * you have to add 4 parameter at the beginning of the font array to use: + * - the number of byte / char + * - the vertial size in pixel + * - the horizontal size in pixel + * - the number of byte per vertical line + * you also have to change the array to char[] + * + */ + void set_font(unsigned char* f); + + /** Set the orientation of the screen + * x,y: 0,0 is always top left + * + * @param o direction to use the screen (0-3) 90� Steps + * + */ + void set_orientation(unsigned int o); + + SPI _spi; + // DigitalOut _cs; we use SSEL0/1 + DigitalOut _reset; + unsigned char* font; + + + + +protected: + + /** Set draw window region to whole screen + * + */ + void WindowMax (void); + + + /** draw a horizontal line + * + * @param x0 horizontal start + * @param x1 horizontal stop + * @param y vertical position + * @param color 16 bit color + * + */ + void hline(int x0, int x1, int y, int colour); + + /** draw a vertical line + * + * @param x horizontal position + * @param y0 vertical start + * @param y1 vertical stop + * @param color 16 bit color + */ + void vline(int y0, int y1, int x, int colour); + + /** Set draw window region + * + * @param x horizontal position + * @param y vertical position + * @param w window width in pixel + * @param h window height in pixels + */ + void window (unsigned int x, unsigned int y, unsigned int w, unsigned int h); + + + + /** Init the HX8347D controller + * + */ + void tft_reset(); + + /** Write data to the LCD controller + * + * @param dat data written to LCD controller + * + */ + //void wr_dat(unsigned int value); + void wr_dat(unsigned char value); + + /** Write a command the LCD controller + * + * @param cmd: command to be written + * + */ + void wr_cmd(unsigned char value); + + /** Start data sequence to the LCD controller + * + */ + //void wr_dat_start(); + + /** Stop of data writing to the LCD controller + * + */ + //void wr_dat_stop(); + + /** write data to the LCD controller + * + * @param data to be written + * * + */ + void wr_dat_only(unsigned short dat); + + /** Read data from the LCD controller + * + * @returns data from LCD controller + * + */ + unsigned short rd_dat(void); + + /** Write a value to the to a LCD register + * + * @param reg register to be written + * @param val data to be written + */ + void wr_reg (unsigned char reg, unsigned char val); + + /** Read a LCD register + * + * @param reg register to be read + * @returns value of the register + */ + unsigned short rd_reg (unsigned char reg); + + unsigned char spi_port; + unsigned int orientation; + unsigned int char_x; + unsigned int char_y; + + +}; + +#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextDisplay.cpp Mon Sep 10 19:23:26 2012 +0000 @@ -0,0 +1,77 @@ +/* mbed TextDisplay Display Library Base Class + * Copyright (c) 2007-2009 sford + * Released under the MIT License: http://mbed.org/license/mit + */ + +#include "TextDisplay.h" + +TextDisplay::TextDisplay(const char *name) : Stream(name){ + _row = 0; + _column = 0; + if (name == NULL) { + _path = NULL; + } else { + _path = new char[strlen(name) + 2]; + sprintf(_path, "/%s", name); + } +} + +int TextDisplay::_putc(int value) { + if(value == '\n') { + _column = 0; + _row++; + if(_row >= rows()) { + _row = 0; + } + } else { + character(_column, _row, value); + _column++; + if(_column >= columns()) { + _column = 0; + _row++; + if(_row >= rows()) { + _row = 0; + } + } + } + return value; +} + +// crude cls implementation, should generally be overwritten in derived class +void TextDisplay::cls() { + locate(0, 0); + for(int i=0; i<columns()*rows(); i++) { + putc(' '); + } +} + +void TextDisplay::locate(int column, int row) { + _column = column; + _row = row; +} + +int TextDisplay::_getc() { + return -1; +} + +void TextDisplay::foreground(uint16_t colour) { + _foreground = colour; +} + +void TextDisplay::background(uint16_t colour) { + _background = colour; +} + +bool TextDisplay::claim (FILE *stream) { + if ( _path == NULL) { + fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n"); + return false; + } + if (freopen(_path, "w", stream) == NULL) { + // Failed, should not happen + return false; + } + // make sure we use line buffering + setvbuf(stdout, NULL, _IOLBF, columns()); + return true; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextDisplay.h Mon Sep 10 19:23:26 2012 +0000 @@ -0,0 +1,80 @@ +/* mbed TextDisplay Library Base Class + * Copyright (c) 2007-2009 sford + * Released under the MIT License: http://mbed.org/license/mit + * + * A common base class for Text displays + * To port a new display, derive from this class and implement + * the constructor (setup the display), character (put a character + * at a location), rows and columns (number of rows/cols) functions. + * Everything else (locate, printf, putc, cls) will come for free + * + * The model is the display will wrap at the right and bottom, so you can + * keep writing and will always get valid characters. The location is + * maintained internally to the class to make this easy + */ + +#ifndef MBED_TEXTDISPLAY_H +#define MBED_TEXTDISPLAY_H + +#include "mbed.h" + +class TextDisplay : public Stream { +public: + + // functions needing implementation in derived implementation class + /** Create a TextDisplay interface + * + * @param name The name used in the path to access the strean through the filesystem + */ + TextDisplay(const char *name = NULL); + + /** output a character at the given position + * + * @param column column where charater must be written + * @param row where character must be written + * @param c the character to be written to the TextDisplay + */ + virtual void character(int column, int row, int c) = 0; + + /** return number if rows on TextDisplay + * @result number of rows + */ + virtual int rows() = 0; + + /** return number if columns on TextDisplay + * @result number of rows + */ + virtual int columns() = 0; + + // functions that come for free, but can be overwritten + + /** redirect output from a stream (stoud, sterr) to display + * @param stream stream that shall be redirected to the TextDisplay + */ + virtual bool claim (FILE *stream); + + /** clear screen + */ + virtual void cls(); + virtual void locate(int column, int row); + virtual void foreground(uint16_t colour); + virtual void background(uint16_t colour); + // putc (from Stream) + // printf (from Stream) + +protected: + + virtual int _putc(int value); + virtual int _getc(); + + // character location + uint16_t _column; + uint16_t _row; + + // colours + uint16_t _foreground; + uint16_t _background; + char *_path; +}; + +#endif