David Smart
Library to control a Graphics TFT connected to 4-wire SPI - revised for the Raio RA8875 Display Controller.
Dependents: FRDM_RA8875_mPaint RA8875_Demo RA8875_KeyPadDemo SignalGenerator ... more
Fork of
SPI_TFT
by 
Peter Drescher
See Components - RA8875 Based Display
Enhanced touch-screen support - where it previous supported both the Resistive Touch and Capacitive Touch based on the FT5206 Touch Controller, now it also has support for the GSL1680 Touch Controller.
Offline Help Manual (Windows chm)
/media/uploads/WiredHome/ra8875.zip.bin (download, rename to .zip and unzip)
SPI_TFT.cpp
- Committer:
- dreschpe
- Date:
- 2013-10-22
- Revision:
- 18:52cbeede86f0
- Parent:
- 16:2efcbb2814fa
File content as of revision 18:52cbeede86f0:
/* 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
// 03.02.13 add a switch to switch off DMA use for LPC11U24
// 04.03.13 add support for new Kinetis board
// 25.03.13 fix Bug in bitmap for Kinetis board
// 18.10.13 Better Circle function from Michael Ammann
#include "SPI_TFT.h"
#include "mbed.h"
#define BPP 16 // Bits per pixel
#if defined TARGET_LPC1768
#define USE_DMA // we use dma to speed up
#define NO_MBED_LIB // we write direct to the SPI register to speed up
#endif
#if defined NO_DMA // if LPC1768 user want no DMA
#undef USE_DMA
#endif
//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 defined TARGET_LPC1768
if (mosi == p11 || mosi == P0_18){
spi_port = 0; // we must know the used SPI port to setup the DMA
}
else {
spi_port = 1;
}
#endif
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)
{
_cs = 0;
#if defined NO_MBED_LIB
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 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
}
#else // use mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(0x70);
_spi.write(cmd);
#else // 16 Bit SPI
unsigned short spi_d;
spi_d = 0x7000 | cmd ;
_spi.write(spi_d); // mbed lib
#endif
#endif
_cs = 1;
}
// write data to tft register
void SPI_TFT::wr_dat(unsigned char dat)
{
_cs = 0;
#if defined NO_MBED_LIB
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 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
}
#else // use mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(0x72);
_spi.write(dat);
#else // 16 Bit SPI
unsigned short spi_d;
spi_d = 0x7200 | dat;
_spi.write(spi_d);
#endif
#endif
_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);
}
// write to a TFT register
void SPI_TFT::wr_reg (unsigned char reg, unsigned char val)
{
wr_cmd(reg);
wr_dat(val);
}
// read from a TFT register
unsigned short SPI_TFT::rd_reg (unsigned char reg)
{
wr_cmd(reg);
return(rd_dat());
}
// setup TFT controller - this is called by constructor
void SPI_TFT::tft_reset()
{
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.format(8,3);
#else // 16 Bit SPI
_spi.format(16,3); // 16 bit spi mode 3
#endif
_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); // default setup
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, 0x36); /* OSC Control 1 */
wr_reg(0x19, 0x01); /* OSC Control 2 */
wr_reg(0x01, 0x00); /* Display Mode Control */
wr_reg(0x1F, 0x88); /* Power Control 6 */
wait_ms(5); /* Delay 5 ms */
wr_reg(0x1F, 0x80); /* Power Control 6 */
wait_ms(5); /* Delay 5 ms */
wr_reg(0x1F, 0x90); /* Power Control 6 */
wait_ms(5); /* Delay 5 ms */
wr_reg(0x1F, 0xD0); /* Power Control 6 */
wait_ms(5); /* Delay 5 ms */
wr_reg(0x17, 0x05); /* Colmod 16Bit/Pixel */
wr_reg(0x36, 0x00); /* Panel Characteristic */
wr_reg(0x28, 0x38); /* Display Control 3 */
wait_ms(40);
wr_reg(0x28, 0x3C); /* Display Control 3 */
switch (orientation) {
case 0:
wr_reg(0x16, 0x08);
break;
case 2:
wr_reg(0x16, 0xC8);
break;
case 3:
wr_reg(0x16, 0xA8);
break;
case 1:
default:
wr_reg(0x16, 0x68);
break;
}
#if defined USE_DMA // setup DMA channel 0
LPC_SC->PCONP |= (1UL << 29); // Power up the GPDMA.
LPC_GPDMA->DMACConfig = 1; // enable DMA controller
LPC_GPDMA->DMACIntTCClear = 0x1; // Reset the Interrupt status
LPC_GPDMA->DMACIntErrClr = 0x1;
LPC_GPDMACH0->DMACCLLI = 0;
#endif
WindowMax ();
}
// Set one pixel
void SPI_TFT::pixel(int x, int y, int color)
{
wr_reg(0x03, (x >> 0));
wr_reg(0x02, (x >> 8));
wr_reg(0x07, (y >> 0));
wr_reg(0x06, (y >> 8));
wr_cmd(0x22);
_cs = 0;
#if defined NO_MBED_LIB
if (spi_port == 0) { // TFT on SSP0
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start Data
LPC_SSP0->CR0 |= 0x08UL; // set back to 16 bit
LPC_SSP0->DR = color; // Pixel
// we have to wait for SPI IDLE to set CS back to high
do {
} while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle
} else { // TFT on SSP1
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data
LPC_SSP1->CR0 |= 0x08UL; // set back to 16 bit
LPC_SSP1->DR = color;
// we have to wait for SPI IDLE to set CS back to high
do {
} while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle
}
#else // use mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.write(color >> 8);
_spi.write(color & 0xff);
#else
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch to 16 bit Mode 3
_spi.write(color); // Write D0..D15
#endif
#endif
_cs = 1;
}
// define draw area
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));
}
// set draw area to max
void SPI_TFT::WindowMax (void)
{
window (0, 0, width(), height());
}
// clear screen
void SPI_TFT::cls (void)
{
fprintf(stderr, "CLS \n\r");
int pixel = ( width() * height());
#if defined USE_DMA
int dma_count;
int color = _background;
#endif
WindowMax();
wr_cmd(0x22);
#if defined NO_MBED_LIB
#if defined USE_DMA
LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color;
#endif
_cs = 0;
if (spi_port == 0) { // TFT on SSP0
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
/* Enable SSP0 for DMA. */
LPC_SSP0->DMACR = 0x2;
#endif
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start byte
LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit
} else { // TFT on SSP1
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
/* Enable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x2;
#endif
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data
LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit
}
#if defined USE_DMA
// 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 { // TFT on SSP1
do {
} while ((0x0010 & LPC_SSP1->SR) == 0x10); // SPI FIFO not empty
/* disable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x0;
}
#else // no DMA
unsigned int i;
for (i = 0; i < ( width() * height()); i++)
_spi.write(_background);
#endif
#else // use mbed lib
_cs = 0;
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
unsigned int i;
for (i = 0; i < ( width() * height()); i++) {
_spi.write(_background >> 8);
_spi.write(_background & 0xff);
}
#else // 16 bit SPI
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch back to 16 bit Mode 3
unsigned int i;
for (i = 0; i < ( width() * height()); i++)
_spi.write(_background);
#endif
#endif
_cs = 1;
}
void SPI_TFT::circle(int x0, int y0, int r, int color)
{
int x = -r, y = 0, err = 2-2*r, e2;
do {
pixel(x0-x, y0+y,color);
pixel(x0+x, y0+y,color);
pixel(x0+x, y0-y,color);
pixel(x0-x, y0-y,color);
e2 = err;
if (e2 <= y) {
err += ++y*2+1;
if (-x == y && e2 <= x) e2 = 0;
}
if (e2 > x) err += ++x*2+1;
} while (x <= 0);
}
void SPI_TFT::fillcircle(int x0, int y0, int r, int color)
{
int x = -r, y = 0, err = 2-2*r, e2;
do {
vline(x0-x, y0-y, y0+y, color);
vline(x0+x, y0-y, y0+y, color);
e2 = err;
if (e2 <= y) {
err += ++y*2+1;
if (-x == y && e2 <= x) e2 = 0;
}
if (e2 > x) err += ++x*2+1;
} while (x <= 0);
}
// draw horizontal line
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 defined NO_MBED_LIB
if (spi_port == 0) { // TFT on SSP0
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
/* Enable SSP0 for DMA. */
LPC_SSP0->DMACR = 0x2;
#endif
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start Data
LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit
} else { // TFT on SSP1
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
/* Enable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x2;
#endif
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data
LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit
}
#if defined USE_DMA
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 { // TFT on SSP1
do {
} while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty
}
#else // no DMA
int i;
for (i=0; i<w; i++) {
_spi.write(color);
}
#endif
#else // use mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
for (int j=0; j<w; j++) {
_spi.write(color >> 8);
_spi.write(color & 0xff);
}
#else // 16 Bit SPI
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch back to 16 bit Mode 3
for (int j=0; j<w; j++) {
_spi.write(color);
}
#endif
#endif
_cs = 1;
WindowMax();
return;
}
// draw vertical line
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 defined NO_MBED_LIB
if (spi_port == 0) { // TFT on SSP0
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
/* Enable SSP0 for DMA. */
LPC_SSP0->DMACR = 0x2;
#endif
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start Data
LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit
} else { // TFT on SSP1
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
/* Enable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x2;
#endif
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data
LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit
}
#if defined USE_DMA
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 { // TFT on SSP1
do {
} while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty
}
#else // no DMA
for (int y=0; y<h; y++) {
_spi.write(color);
}
#endif
#else // use mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
for (int y=0; y<h; y++) {
_spi.write(color >> 8);
_spi.write(color & 0xff);
}
#else // 16 bit SPI
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch to 16 bit Mode 3
for (int y=0; y<h; y++) {
_spi.write(color);
}
#endif
#endif
_cs = 1;
WindowMax();
return;
}
// draw line
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;
}
// draw rect
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;
}
// fill rect
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;
#if defined USE_DMA
int dma_count;
#endif
window(x0,y0,w,h);
wr_cmd(0x22);
_cs = 0;
#if defined NO_MBED_LIB
if (spi_port == 0) { // TFT on SSP0
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
/* Enable SSP0 for DMA. */
LPC_SSP0->DMACR = 0x2;
#endif
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start Data
LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit
} else { // TFT on SSP1
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
/* Enable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x2;
#endif
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data
LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit
}
#if defined USE_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->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 { // TFT on SSP1
do {
} while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty
}
#else // no DMA
for (int p=0; p<pixel; p++) {
_spi.write(color);
}
#endif
#else // use mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
for (int p=0; p<pixel; p++) {
_spi.write(color >> 8);
_spi.write(color & 0xff);
}
#else // 16 bit SPI
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch to 16 bit Mode 3
for (int p=0; p<pixel; p++) {
_spi.write(color);
}
#endif
#endif
_cs = 1;
WindowMax();
return;
}
// set cursor position
void SPI_TFT::locate(int x, int y)
{
char_x = x;
char_y = y;
}
// calculate num of chars in a row
int SPI_TFT::columns()
{
return width() / font[1];
}
// calculate num of rows on the screen
int SPI_TFT::rows()
{
return height() / font[2];
}
// print a char on the screen
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;
}
// consrtuct the char out of the font
void SPI_TFT::character(int x, int y, int c)
{
unsigned int hor,vert,offset,bpl,j,i,b;
unsigned char* zeichen;
unsigned char z,w;
#if defined USE_DMA
unsigned int pixel;
unsigned int p;
unsigned int dma_count,dma_off;
uint16_t *buffer;
#endif
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);
#if defined USE_DMA
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 { // TFT on SSP1
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 { // TFT on SSP1
do {
} while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle
/* disable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x0;
}
#else // no dma
_cs = 0;
#if defined NO_MBED_LIB
if (spi_port == 0) { // TFT on SSP0
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start Data
LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit
} else { // TFT on SSP1
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data
LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit
}
#else // mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
#else // 16 bit SPI
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch back to 16 bit Mode 3
#endif
#endif
zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap
w = zeichen[0]; // width of actual char
for (j=0; j<vert; j++) { // vert line
for (i=0; i<hor; i++) { // horz line
z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1];
b = 1 << (j & 0x07);
if (( z & b ) == 0x00) {
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(_background >> 8);
_spi.write(_background & 0xff);
#else
_spi.write(_background);
#endif
} else {
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(_foreground >> 8);
_spi.write(_foreground & 0xff);
#else
_spi.write(_foreground);
#endif
}
}
}
#endif // no DMA
_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;
#if defined TARGET_KL25Z // 8 Bit SPI
unsigned short pix_temp;
#endif
// 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 defined NO_MBED_LIB
if (spi_port == 0) { // TFT on SSP0
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
/* Enable SSP0 for DMA. */
LPC_SSP0->DMACR = 0x2;
#endif
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start Data
LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit
} else {
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
/* Enable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x2;
#endif
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data command
LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit
}
bitmap_ptr += ((h - 1)* (w + padd));
#if defined USE_DMA
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;
}
#else
unsigned int i;
for (j = 0; j < h; j++) { //Lines
for (i = 0; i < w; i++) { // copy pixel data to TFT
_spi.write(*bitmap_ptr); // one line
bitmap_ptr++;
}
bitmap_ptr -= 2*w;
bitmap_ptr -= padd;
}
#endif
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
}
#else // use mbed lib
#if defined TARGET_KL25Z // 8 Bit SPI
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
#else
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch to 16 bit Mode 3
#endif
bitmap_ptr += ((h - 1)* (w + padd));
unsigned int i;
for (j = 0; j < h; j++) { //Lines
for (i = 0; i < w; i++) { // copy pixel data to TFT
#if defined TARGET_KL25Z // 8 Bit SPI
pix_temp = *bitmap_ptr;
_spi.write(pix_temp >> 8);
_spi.write(pix_temp);
bitmap_ptr++;
#else
_spi.write(*bitmap_ptr); // one line
bitmap_ptr++;
#endif
}
bitmap_ptr -= 2*w;
bitmap_ptr -= padd;
}
#endif // USE MBED LIB
_cs = 1;
WindowMax();
}
// local filesystem is not implemented in kinetis board
#if defined TARGET_LPC1768 || defined TARGET_LPC11U24
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 defined NO_MBED_LIB
if (spi_port == 0) { // TFT on SSP0
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
/* Enable SSP0 for DMA. */
LPC_SSP0->DMACR = 0x2;
#endif
LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP0->DR = 0x72; // start Data
LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit
} else {
#if defined USE_DMA
LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
/* Enable SSP1 for DMA. */
LPC_SSP1->DMACR = 0x2;
#endif
LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit
LPC_SSP1->DR = 0x72; // start Data
LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit
}
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 defined USE_DMA
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
#else
for (i = 0; i < PixelWidth; i++) { // copy pixel data to TFT
_spi.write(line[i]); // one 16 bit pixel
}
#endif
}
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
}
#else // use mbed lib
_spi.format(8,3); // 8 bit Mode 3
_spi.write(SPI_START | SPI_WR | SPI_DATA); // Write : RS = 1, RW = 0
_spi.format(16,3); // switch to 16 bit Mode 3
for (j = PixelHeigh - 1; j >= 0; j--) { //Lines bottom up
off = j * (PixelWidth * 2 + padd) + start_data; // start of line
fseek(Image, off ,SEEK_SET);
fread(line,1,PixelWidth * 2,Image); // read a line - slow !
for (i = 0; i < PixelWidth; i++) { // copy pixel data to TFT
_spi.write(line[i]); // one 16 bit pixel
}
}
#endif
_cs = 1;
free (line);
fclose(Image);
WindowMax();
return(1);
}
#endif
RA8875: 4" to 8" (WQVGA, WVGA, Multi-Touch, Keypad)