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
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Diff: SPI_TFT.cpp
- Revision:
- 7:e753bb62eeb9
- Parent:
- 6:34a13617fd35
- Child:
- 8:65a4de035c3c
--- a/SPI_TFT.cpp Sat Sep 22 20:41:44 2012 +0000 +++ b/SPI_TFT.cpp Fri Oct 12 10:03:42 2012 +0000 @@ -1,1063 +1,1063 @@ -/* 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. -// 11.09.12 switch back to using io pin as cs to avoid problems with SSEL CS. -// 21.09.12 fix Bug in BMP_16 - - -#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), _cs(cs), _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 ; - _cs = 0; - if (spi_port == 0) { // TFT on SSP0 - LPC_SSP0->DR = spi_d; - // we have to wait for SPI IDLE to set 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 - } - _cs = 1; -} - - - -void SPI_TFT::wr_dat(unsigned char dat) -{ - unsigned short spi_d; - spi_d = 0x7200 | dat; - _cs = 0; - if (spi_port == 0) { // TFT on SSP0 - LPC_SSP0->DR = spi_d; - // we have to wait for SPI IDLE to set 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 - } - _cs = 1; -} - - - -// the HX8347-D controller do not use the MISO (SDO) Signal. -// This is a bug - ? -// A read will return 0 at the moment - -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 - _cs = 1; // cs high - _reset = 0; // display reset - - 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; - _cs = 0; - 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 set 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 set CS back to high - do { - } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle - } - _cs = 1; -} - - -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; - - _cs = 0; - 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->DR = 0x72; // start byte - LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit - } 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->DR = 0x72; // start Data - LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit - } - - // 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; - } - _cs = 1; -} - - -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); - _cs = 0; - 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->DR = 0x72; // start Data - LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit - } 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->DR = 0x72; // start Data - LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit - } - - 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 - } - _cs = 1; - 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); - _cs = 0; - 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->DR = 0x72; // start Data - LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit - } 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->DR = 0x72; // start Data - LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit - } - - 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 - } - _cs = 1; - 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); - _cs = 0; - 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->DR = 0x72; // start Data - LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit - } 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->DR = 0x72; // start Data - LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit - } - - 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 - } - _cs = 1; - 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 - _cs = 0; - 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->DR = 0x72; // start Data - LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit - } 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->DR = 0x72; // start Data - LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit - } - - // 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; - } - _cs = 1; - 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); - _cs = 0; - if (spi_port == 0) { // TFT on SSP0 - LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 - LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit - LPC_SSP0->DR = 0x72; // start Data - LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit - /* Enable SSP0 for DMA. */ - LPC_SSP0->DMACR = 0x2; - - } else { - LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 - LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit - LPC_SSP1->DR = 0x72; // start Data command - LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit - /* Enable SSP1 for DMA. */ - LPC_SSP1->DMACR = 0x2; - - } - - 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 - } - _cs = 1; - 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], "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(0x22); - _cs = 0; - - if (spi_port == 0) { // TFT on SSP0 - LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 - LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit - LPC_SSP0->DR = 0x72; // start Data - LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit - /* Enable SSP0 for DMA. */ - LPC_SSP0->DMACR = 0x2; - - } else { - LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 - LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit - LPC_SSP1->DR = 0x72; // start Data - LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit - /* Enable SSP1 for DMA. */ - LPC_SSP1->DMACR = 0x2; - } - 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 ! - - 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 - } - _cs = 1; - free (line); - fclose(Image); - WindowMax(); - return(1); +/* 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. +// 11.09.12 switch back to using io pin as cs to avoid problems with SSEL CS. +// 21.09.12 fix Bug in BMP_16 +// 11.10.12 patch from Hans Bergles to get SPI1 working again + +#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), _cs(cs), _reset(reset),GraphicsDisplay(name) +{ + 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; + tft_reset(); +} + +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 ; + _cs = 0; + if (spi_port == 0) { // TFT on SSP0 + LPC_SSP0->DR = spi_d; + // we have to wait for SPI IDLE to set 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 + } + _cs = 1; +} + + + +void SPI_TFT::wr_dat(unsigned char dat) +{ + unsigned short spi_d; + spi_d = 0x7200 | dat; + _cs = 0; + if (spi_port == 0) { // TFT on SSP0 + LPC_SSP0->DR = spi_d; + // we have to wait for SPI IDLE to set 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 + } + _cs = 1; +} + + + +// the HX8347-D controller do not use the MISO (SDO) Signal. +// This is a bug - ? +// A read will return 0 at the moment + +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 + _cs = 1; // cs high + _reset = 0; // display reset + + 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; + _cs = 0; + 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 set 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 set CS back to high + do { + } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle + } + _cs = 1; +} + + +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; + + _cs = 0; + 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->DR = 0x72; // start byte + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + } 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->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + } + + // 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 | (spi_port ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX); + 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; + } + _cs = 1; +} + + +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); + _cs = 0; + 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->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + } 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->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + } + + 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 | (spi_port ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX); + 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 + } + _cs = 1; + 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); + _cs = 0; + 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->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + } 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->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + } + + 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 | (spi_port ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX); + 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 + } + _cs = 1; + 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); + _cs = 0; + 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->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + } 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->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + } + + 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 | (spi_port ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX); + 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 + } + _cs = 1; + 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 + _cs = 0; + 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->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + } 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->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + } + + // 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 | (spi_port ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX); + 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; + } + _cs = 1; + 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); + _cs = 0; + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->DR = 0x72; // start Data command + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + + } + + 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 | (spi_port ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX); + 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 + } + _cs = 1; + 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], "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(0x22); + _cs = 0; + + if (spi_port == 0) { // TFT on SSP0 + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 + LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP0->DR = 0x72; // start Data + LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit + /* Enable SSP0 for DMA. */ + LPC_SSP0->DMACR = 0x2; + + } else { + LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 + LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit + LPC_SSP1->DR = 0x72; // start Data + LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit + /* Enable SSP1 for DMA. */ + LPC_SSP1->DMACR = 0x2; + } + 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 ! + + 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 | (spi_port ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX); + 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 + } + _cs = 1; + free (line); + fclose(Image); + WindowMax(); + return(1); } \ No newline at end of file