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/* mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
* Copyright (c) 2013 Peter Drescher - DC2PD
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// 12.06.13 fork from SPI_TFT code because controller is different ...
// 14.07.13 Test with real display and bugfix
// 18.10.13 Better Circle function from Michael Ammann
// 22.10.13 Fixes for Kinetis Board - 8 bit spi
// 26.01.14 Change interface for BMP_16 to also use SD-cards
// 23.06.14 switch back to old Version - fork for L152
// 24.06.14 Add compiler flag for optimized L152 version
// 25.06.14 Add optimized F103 version
// exclude this file for platforms with optimized version
#if defined TARGET_NUCLEO_L152RE || defined TARGET_NUCLEO_F103RB || defined TARGET_LPC1768
// this platforms are supported by special version in different source file
#else
#include "SPI_TFT_ILI9341.h"
#include "mbed.h"
#define BPP 16 // Bits per pixel
//extern Serial pc;
//extern DigitalOut xx; // debug !!
SPI_TFT_ILI9341::SPI_TFT_ILI9341(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset, PinName dc, const char *name)
: GraphicsDisplay(name), SPI(mosi, miso, sclk,NC), _cs(cs), _reset(reset), _dc(dc)
{
orientation = 0;
char_x = 0;
SPI::format(8,3); // 8 bit spi mode 3
SPI::frequency(10000000); // 10 Mhz SPI clock
tft_reset();
}
int SPI_TFT_ILI9341::width()
{
if (orientation == 0 || orientation == 2) return 240;
else return 320;
}
int SPI_TFT_ILI9341::height()
{
if (orientation == 0 || orientation == 2) return 320;
else return 240;
}
void SPI_TFT_ILI9341::set_orientation(unsigned int o)
{
orientation = o;
wr_cmd(0x36); // MEMORY_ACCESS_CONTROL
switch (orientation) {
case 0:
SPI::write(0x48);
break;
case 1:
SPI::write(0x28);
break;
case 2:
SPI::write(0x88);
break;
case 3:
SPI::write(0xE8);
break;
}
_cs = 1;
WindowMax();
}
// write command to tft register
void SPI_TFT_ILI9341::wr_cmd(unsigned char cmd)
{
_dc = 0;
_cs = 0;
SPI::write(cmd); // mbed lib
_dc = 1;
}
void SPI_TFT_ILI9341::wr_dat(unsigned char dat)
{
SPI::write(dat); // mbed lib
}
// the ILI9341 can read
char SPI_TFT_ILI9341::rd_byte(unsigned char cmd)
{
char r;
_dc = 0;
_cs = 0;
SPI::write(cmd); // mbed lib
_cs = 1;
r = SPI::write(0xff);
_cs = 1;
return(r);
}
// read 32 bit
int SPI_TFT_ILI9341::rd_32(unsigned char cmd)
{
int d;
char r;
_dc = 0;
_cs = 0;
d = cmd;
d = d << 1;
SPI::format(9,3); // we have to add a dummy clock cycle
SPI::write(d);
SPI::format(8,3);
_dc = 1;
r = SPI::write(0xff);
d = r;
r = SPI::write(0xff);
d = (d << 8) | r;
r = SPI::write(0xff);
d = (d << 8) | r;
r = SPI::write(0xff);
d = (d << 8) | r;
_cs = 1;
return(d);
}
int SPI_TFT_ILI9341::Read_ID(void){
int r;
r = rd_byte(0x0A);
r = rd_byte(0x0A);
r = rd_byte(0x0A);
r = rd_byte(0x0A);
return(r);
}
// Init code based on MI0283QT datasheet
void SPI_TFT_ILI9341::tft_reset()
{
_cs = 1; // cs high
_dc = 1; // dc high
_reset = 0; // display reset
wait_us(50);
_reset = 1; // end hardware reset
wait_ms(5);
wr_cmd(0x01); // SW reset
wait_ms(5);
wr_cmd(0x28); // display off
/* Start Initial Sequence ----------------------------------------------------*/
wr_cmd(0xCF);
SPI::write(0x00);
SPI::write(0x83);
SPI::write(0x30);
_cs = 1;
wr_cmd(0xED);
SPI::write(0x64);
SPI::write(0x03);
SPI::write(0x12);
SPI::write(0x81);
_cs = 1;
wr_cmd(0xE8);
SPI::write(0x85);
SPI::write(0x01);
SPI::write(0x79);
_cs = 1;
wr_cmd(0xCB);
SPI::write(0x39);
SPI::write(0x2C);
SPI::write(0x00);
SPI::write(0x34);
SPI::write(0x02);
_cs = 1;
wr_cmd(0xF7);
SPI::write(0x20);
_cs = 1;
wr_cmd(0xEA);
SPI::write(0x00);
SPI::write(0x00);
_cs = 1;
wr_cmd(0xC0); // POWER_CONTROL_1
SPI::write(0x26);
_cs = 1;
wr_cmd(0xC1); // POWER_CONTROL_2
SPI::write(0x11);
_cs = 1;
wr_cmd(0xC5); // VCOM_CONTROL_1
SPI::write(0x35);
SPI::write(0x3E);
_cs = 1;
wr_cmd(0xC7); // VCOM_CONTROL_2
SPI::write(0xBE);
_cs = 1;
wr_cmd(0x36); // MEMORY_ACCESS_CONTROL
SPI::write(0x48);
_cs = 1;
wr_cmd(0x3A); // COLMOD_PIXEL_FORMAT_SET
SPI::write(0x55); // 16 bit pixel
_cs = 1;
wr_cmd(0xB1); // Frame Rate
SPI::write(0x00);
SPI::write(0x1B);
_cs = 1;
wr_cmd(0xF2); // Gamma Function Disable
SPI::write(0x08);
_cs = 1;
wr_cmd(0x26);
SPI::write(0x01); // gamma set for curve 01/2/04/08
_cs = 1;
wr_cmd(0xE0); // positive gamma correction
SPI::write(0x1F);
SPI::write(0x1A);
SPI::write(0x18);
SPI::write(0x0A);
SPI::write(0x0F);
SPI::write(0x06);
SPI::write(0x45);
SPI::write(0x87);
SPI::write(0x32);
SPI::write(0x0A);
SPI::write(0x07);
SPI::write(0x02);
SPI::write(0x07);
SPI::write(0x05);
SPI::write(0x00);
_cs = 1;
wr_cmd(0xE1); // negativ gamma correction
SPI::write(0x00);
SPI::write(0x25);
SPI::write(0x27);
SPI::write(0x05);
SPI::write(0x10);
SPI::write(0x09);
SPI::write(0x3A);
SPI::write(0x78);
SPI::write(0x4D);
SPI::write(0x05);
SPI::write(0x18);
SPI::write(0x0D);
SPI::write(0x38);
SPI::write(0x3A);
SPI::write(0x1F);
_cs = 1;
WindowMax ();
//wr_cmd(0x34); // tearing effect off
//_cs = 1;
//wr_cmd(0x35); // tearing effect on
//_cs = 1;
wr_cmd(0xB7); // entry mode
SPI::write(0x07);
_cs = 1;
wr_cmd(0xB6); // display function control
SPI::write(0x0A);
SPI::write(0x82);
SPI::write(0x27);
SPI::write(0x00);
_cs = 1;
wr_cmd(0x11); // sleep out
_cs = 1;
wait_ms(100);
wr_cmd(0x29); // display on
_cs = 1;
wait_ms(100);
}
void SPI_TFT_ILI9341::pixel(int x, int y, int color)
{
wr_cmd(0x2A);
SPI::write(x >> 8);
SPI::write(x);
_cs = 1;
wr_cmd(0x2B);
SPI::write(y >> 8);
SPI::write(y);
_cs = 1;
wr_cmd(0x2C); // send pixel
#if defined TARGET_KL25Z // 8 Bit SPI
SPI::write(color >> 8);
SPI::write(color & 0xff);
#else
SPI::format(16,3); // switch to 16 bit Mode 3
SPI::write(color); // Write D0..D15
SPI::format(8,3);
#endif
_cs = 1;
}
void SPI_TFT_ILI9341::window (unsigned int x, unsigned int y, unsigned int w, unsigned int h)
{
wr_cmd(0x2A);
SPI::write(x >> 8);
SPI::write(x);
SPI::write((x+w-1) >> 8);
SPI::write(x+w-1);
_cs = 1;
wr_cmd(0x2B);
SPI::write(y >> 8);
SPI::write(y);
SPI::write((y+h-1) >> 8);
SPI::write(y+h-1);
_cs = 1;
}
void SPI_TFT_ILI9341::WindowMax (void)
{
window (0, 0, width(), height());
}
void SPI_TFT_ILI9341::cls (void)
{
// we can use the fillrect function
fillrect(0,0,width()-1,height()-1,_background);
}
void SPI_TFT_ILI9341::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_ILI9341::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);
}
void SPI_TFT_ILI9341::hline(int x0, int x1, int y, int color)
{
int w;
w = x1 - x0 + 1;
window(x0,y,w,1);
wr_cmd(0x2C); // send pixel
#if defined TARGET_KL25Z // 8 Bit SPI
int j;
for (j=0; j<w; j++) {
SPI::write(color >> 8);
SPI::write(color & 0xff);
}
#else
SPI::format(16,3); // switch to 16 bit Mode 3
int j;
for (j=0; j<w; j++) {
SPI::write(color);
}
SPI::format(8,3);
#endif
_cs = 1;
WindowMax();
return;
}
void SPI_TFT_ILI9341::vline(int x, int y0, int y1, int color)
{
int h;
h = y1 - y0 + 1;
window(x,y0,1,h);
wr_cmd(0x2C); // send pixel
#if defined TARGET_KL25Z // 8 Bit SPI
for (int y=0; y<h; y++) {
SPI::write(color >> 8);
SPI::write(color & 0xff);
}
#else
SPI::format(16,3); // switch to 16 bit Mode 3
for (int y=0; y<h; y++) {
SPI::write(color);
}
SPI::format(8,3);
#endif
_cs = 1;
WindowMax();
return;
}
void SPI_TFT_ILI9341::line(int x0, int y0, int x1, int y1, int color)
{
//WindowMax();
int dx = 0, dy = 0;
int dx_sym = 0, dy_sym = 0;
int dx_x2 = 0, dy_x2 = 0;
int di = 0;
dx = x1-x0;
dy = y1-y0;
if (dx == 0) { /* vertical line */
if (y1 > y0) vline(x0,y0,y1,color);
else vline(x0,y1,y0,color);
return;
}
if (dx > 0) {
dx_sym = 1;
} else {
dx_sym = -1;
}
if (dy == 0) { /* horizontal line */
if (x1 > x0) hline(x0,x1,y0,color);
else hline(x1,x0,y0,color);
return;
}
if (dy > 0) {
dy_sym = 1;
} else {
dy_sym = -1;
}
dx = dx_sym*dx;
dy = dy_sym*dy;
dx_x2 = dx*2;
dy_x2 = dy*2;
if (dx >= dy) {
di = dy_x2 - dx;
while (x0 != x1) {
pixel(x0, y0, color);
x0 += dx_sym;
if (di<0) {
di += dy_x2;
} else {
di += dy_x2 - dx_x2;
y0 += dy_sym;
}
}
pixel(x0, y0, color);
} else {
di = dx_x2 - dy;
while (y0 != y1) {
pixel(x0, y0, color);
y0 += dy_sym;
if (di < 0) {
di += dx_x2;
} else {
di += dx_x2 - dy_x2;
x0 += dx_sym;
}
}
pixel(x0, y0, color);
}
return;
}
void SPI_TFT_ILI9341::rect(int x0, int y0, int x1, int y1, int color)
{
if (x1 > x0) hline(x0,x1,y0,color);
else hline(x1,x0,y0,color);
if (y1 > y0) vline(x0,y0,y1,color);
else vline(x0,y1,y0,color);
if (x1 > x0) hline(x0,x1,y1,color);
else hline(x1,x0,y1,color);
if (y1 > y0) vline(x1,y0,y1,color);
else vline(x1,y1,y0,color);
return;
}
void SPI_TFT_ILI9341::fillrect(int x0, int y0, int x1, int y1, int color)
{
int h = y1 - y0 + 1;
int w = x1 - x0 + 1;
int pixel = h * w;
window(x0,y0,w,h);
wr_cmd(0x2C); // send pixel
#if defined TARGET_KL25Z // 8 Bit SPI
for (int p=0; p<pixel; p++) {
SPI::write(color >> 8);
SPI::write(color & 0xff);
}
#else
SPI::format(16,3); // switch to 16 bit Mode 3
for (int p=0; p<pixel; p++) {
SPI::write(color);
}
SPI::format(8,3);
#endif
_cs = 1;
WindowMax();
return;
}
void SPI_TFT_ILI9341::locate(int x, int y)
{
char_x = x;
char_y = y;
}
int SPI_TFT_ILI9341::columns()
{
return width() / font[1];
}
int SPI_TFT_ILI9341::rows()
{
return height() / font[2];
}
int SPI_TFT_ILI9341::_putc(int value)
{
if (value == '\n') { // new line
char_x = 0;
char_y = char_y + font[2];
if (char_y >= height() - font[2]) {
char_y = 0;
}
} else {
character(char_x, char_y, value);
}
return value;
}
void SPI_TFT_ILI9341::character(int x, int y, int c)
{
unsigned int hor,vert,offset,bpl,j,i,b;
unsigned char* zeichen;
unsigned char z,w;
if ((c < 31) || (c > 127)) return; // test char range
// read font parameter from start of array
offset = font[0]; // bytes / char
hor = font[1]; // get hor size of font
vert = font[2]; // get vert size of font
bpl = font[3]; // bytes per line
if (char_x + hor > width()) {
char_x = 0;
char_y = char_y + vert;
if (char_y >= height() - font[2]) {
char_y = 0;
}
}
window(char_x, char_y,hor,vert); // char box
wr_cmd(0x2C); // send pixel
#ifndef TARGET_KL25Z // 16 Bit SPI
SPI::format(16,3);
#endif // switch to 16 bit Mode 3
zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap
w = zeichen[0]; // width of actual char
for (j=0; j<vert; j++) { // vert line
for (i=0; i<hor; i++) { // horz line
z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1];
b = 1 << (j & 0x07);
if (( z & b ) == 0x00) {
#ifndef TARGET_KL25Z // 16 Bit SPI
SPI::write(_background);
#else
SPI::write(_background >> 8);
SPI::write(_background & 0xff);
#endif
} else {
#ifndef TARGET_KL25Z // 16 Bit SPI
SPI::write(_foreground);
#else
SPI::write(_foreground >> 8);
SPI::write(_foreground & 0xff);
#endif
}
}
}
_cs = 1;
#ifndef TARGET_KL25Z // 16 Bit SPI
SPI::format(8,3);
#endif
WindowMax();
if ((w + 2) < hor) { // x offset to next char
char_x += w + 2;
} else char_x += hor;
}
void SPI_TFT_ILI9341::set_font(unsigned char* f)
{
font = f;
}
void SPI_TFT_ILI9341::Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap)
{
unsigned int j;
int padd;
unsigned short *bitmap_ptr = (unsigned short *)bitmap;
// the lines are padded to multiple of 4 bytes in a bitmap
padd = -1;
do {
padd ++;
} while (2*(w + padd)%4 != 0);
window(x, y, w, h);
bitmap_ptr += ((h - 1)* (w + padd));
wr_cmd(0x2C); // send pixel
SPI::format(16,3);
for (j = 0; j < h; j++) { //Lines
SPI::tx_buff(bitmap_ptr, w);
bitmap_ptr -= w;
bitmap_ptr -= padd;
}
_cs = 1;
SPI::format(8,3);
WindowMax();
}
// local filesystem is not implemented in kinetis board , but you can add a SD card
int SPI_TFT_ILI9341::BMP_16(unsigned int x, unsigned int y, const char *Name_BMP)
{
#define OffsetPixelWidth 18
#define OffsetPixelHeigh 22
#define OffsetFileSize 34
#define OffsetPixData 10
#define OffsetBPP 28
char filename[50];
unsigned char BMP_Header[54];
unsigned short BPP_t;
unsigned int PixelWidth,PixelHeigh,start_data;
unsigned int i,off;
int padd,j;
unsigned short *line;
// get the filename
i=0;
while (*Name_BMP!='\0') {
filename[i++]=*Name_BMP++;
}
filename[i] = 0;
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);
window(x, y,PixelWidth ,PixelHeigh);
wr_cmd(0x2C); // send pixel
#ifndef TARGET_KL25Z // only 8 Bit SPI
SPI::format(16,3);
#endif // 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
#ifndef TARGET_KL25Z // only 8 Bit SPI
SPI::write(line[i]); // one 16 bit pixel
#else
SPI::write(line[i] >> 8);
SPI::write(line[i]);
#endif
}
}
_cs = 1;
SPI::format(8,3);
free (line);
fclose(Image);
WindowMax();
return(1);
}
#endif