Frank Vannieuwkerke
Library for Mini-DK board
Dependents: LPC1768_Mini-DK_EasyWeb_DM9161 LPC1768_Mini-DK LPC1768_Mini-DK
Fork of
Mini-DK
by 
Frank Vannieuwkerke
Mini-DK board overview (Micro SD connector is at the bottom side)
One serial interface , uses CP2102 (USB to RS232 interface, support ISP download )
RJ45-10/100M Ethernet network interface (Ethernet PHY: DM9161)
2.8 inch TFT color LCD interface (SPI interface or 16Bit parallel interface)
Touch panel controller XPT2046 (ADS7843 compatible)
USB 2.0 interface, USB host and USB Device interface.
TF SD / MMC card (SPI) interface.
Two user buttons, One Reset button and ISP button , One INT0 button, two user-programmable LED lights
Serial ISP download, Standard 20-pin JTAG download simulation debugging interface.
Selection between external 5V power supply or USB 5V supply.
Board size: 95mm * 78mm
All IO available on extension connectors
04/01/13
Erik Olieman (http://mbed.org/users/Sissors/) joined the code development for the Mini-DK board.
Thanks to his input, we were able to obtain a tremendous speed gain, remove warnings, ...
An overview of all modifications is stored in modifs.h
The old page (http://mbed.org/users/frankvnk/code/LPC1768_Mini-DK/) contains the demo code.
IMPORTANT : Due to a change in the mbed libraries (Stream()), we cannot use the printf instruction - we need to use <SPI_TFT>.printf (example - see main.cpp in http://mbed.org/users/frankvnk/code/LPC1768_Mini-DK/)
WARNING: filetoflash (SD to CPU flash)
The SPI_TFT library contains an option to copy an image from the SD card to the CPU flash memory. This allows you to use an image as background without speed loss when writing other text and graphics.
By default, this option is enabled.
It can be disabled by uncommenting the #define mentioned below in Mini_DK.h:
#define NO_FLASH_BUFFER
Since the flash memory has limited write endurance, DO NOT use this feature when you intend to read multiple images from the SD card (eg: when used as a photo frame).
14/01/13
A newer version of the Mini-DK has been released by the manufacturer: Mini-DK2. They replaced the DM9161 PHY with a LAN8720A PHY and better buttons are fitted on the board. All other hardware remains the same. Code for this PHY is available from the NXP MCU SW application team. This allows us to use the mbed 'EthernetInterface' library with little modifications. Further info - see http://mbed.org/forum/mbed/topic/3684/?page=1#comment-18473.
Notes:
The code in 'lpc_phy_lan8720.c' uses 'msDelay' - needs to be replaced with 'osDelay'.
A custom MAC address can be defined using following code:
extern "C" void mbed_mac_address(char * mac) {
// define your own MAC Address
mac[0] = 0x00;
mac[1] = 0x01;
mac[2] = 0x02;
mac[3] = 0x03;
mac[4] = 0x04;
mac[5] = 0x05;
};
SPI_TFT/SPI_TFT.cpp
- Committer:
- Sissors
- Date:
- 2013-01-06
- Revision:
- 10:d43a2f5e661c
- Parent:
- 9:742d15898b2b
File content as of revision 10:d43a2f5e661c:
/**************************************************************************************************
***** *****
***** Name: SPI_TFT.cpp *****
***** Ver.: 1.0 *****
***** Date: 04/01/2013 *****
***** Auth: Frank Vannieuwkerke *****
***** Erik Olieman *****
***** Func: library for 240*320 pixel TFT with ILI9320 LCD Controller *****
***** *****
***** Rewrite from Peter Drescher code - http://mbed.org/cookbook/SPI-driven-QVGA-TFT *****
***** *****
**************************************************************************************************/
// TODO : BMP routine
#include "SPI_TFT.h"
#include "mbed.h"
#define BPP 16 // Bits per pixel
SPI_TFT::SPI_TFT(PinName mosi, PinName miso, PinName sclk, PinName cs, const char *name)
: GraphicsDisplay(name), _spi(mosi, miso, sclk), _cs(cs)
{
char_x = 0;
tft_reset();
set_orientation(0);
}
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;
WindowMax();
}
void SPI_TFT::mod_orientation(void)
{
switch (orientation)
{
case 0:
wr_reg(0x03, 0x10b0); // ID1 = 1, ID0 = 1, AM = 0 - Portrait
break;
case 1:
wr_reg(0x03, 0x10a8); // ID1 = 1, ID0 = 0, AM = 0 - Landscape
break;
case 2:
wr_reg(0x03, 0x1080); // ID1 = 0, ID0 = 0, AM = 1 - Portrait upside down
break;
case 3:
wr_reg(0x03, 0x1098); // ID1 = 0, ID0 = 1, AM = 1 - Landscape upside down
break;
}
}
void SPI_TFT::wr_cmd(unsigned char cmd)
{
_cs = 0;
_spi.write(0x70);
_spi.write(0x00);
_spi.write(cmd);
_cs = 1;
}
void SPI_TFT::wr_dat(unsigned short dat)
{
unsigned char u,l;
u = (dat >> 0x08);
l = (dat & 0xff);
_cs = 0;
_spi.write(0x72);
_spi.write(u);
_spi.write(l);
_cs = 1;
}
void SPI_TFT::wr_dat_start(void)
{
_spi.write(0x72);
}
unsigned short SPI_TFT::rd_dat(void) // SPI frequency needs to be lowered on read
{
unsigned short val = 0;
_cs = 0;
_spi.frequency(SPI_F_LO);
_spi.write(0x73);
_spi.write(0x00);
val = _spi.write(0); // Dummy read
val = _spi.write(0); // Read D8..D15
val <<= 8;
val |= _spi.write(0); // Read D0..D7
_cs = 1;
_spi.frequency(SPI_F_HI);
return (val);
}
void SPI_TFT::wr_reg(unsigned char reg, unsigned short val)
{
wr_cmd(reg);
wr_dat(val);
}
unsigned short SPI_TFT::rd_reg(unsigned char reg)
{
wr_cmd(reg);
return(rd_dat());
}
unsigned short SPI_TFT::Read_ID(void) // IMPORTANT : SPI frequency needs to be lowered when reading
{
unsigned short val = 0;
_cs = 0;
_spi.write(0x70);
_spi.write(0x00);
_spi.write(0X00);
_cs = 1;
_spi.frequency(SPI_F_LO);
_cs = 0;
_spi.write(0x73);
val = _spi.write(0x00); // Dummy read
val = _spi.write(0x00); // Read D8..D15
val <<= 8;
val |= _spi.write(0x00); // Read D0..D7
_cs = 1;
_spi.frequency(SPI_F_HI);
return (val);
}
void SPI_TFT::SetCursor( unsigned short Xpos, unsigned short Ypos )
{
wr_reg(0x20, Xpos );
wr_reg(0x21, Ypos );
}
void SPI_TFT::tft_reset()
{
_spi.format(8,3); // 8 bit spi mode 3
_spi.frequency(SPI_F_HI); // 48 Mhz SPI clock
wr_reg(0x00,0x0000);
wr_reg(0x01,0x0100); // Driver Output Control
wr_reg(0x02,0x0700); // LCD Driver Waveform Control
wr_reg(0x03,0x1030); // Set the scan mode
wr_reg(0x04,0x0000); // Scaling Control
wr_reg(0x08,0x0202); // Display Control 2
wr_reg(0x09,0x0000); // Display Control 3
wr_reg(0x0a,0x0000); // Frame Cycle Contal
wr_reg(0x0c,(1<<0)); // Extern Display Interface Control 1
wr_reg(0x0d,0x0000); // Frame Maker Position
wr_reg(0x0f,0x0000); // Extern Display Interface Control 2
wait_ms(50);
wr_reg(0x07,0x0101); // Display Control
wait_ms(50);
wr_reg(0x10,(1<<12)|(0<<8)|(1<<7)|(1<<6)|(0<<4)); // Power Control 1
wr_reg(0x11,0x0007); // Power Control 2
wr_reg(0x12,(1<<8)|(1<<4)|(0<<0)); // Power Control 3
wr_reg(0x13,0x0b00); // Power Control 4
wr_reg(0x29,0x0000); // Power Control 7
wr_reg(0x2b,(1<<14)|(1<<4));
wr_reg(0x50,0); // Set X Start
wr_reg(0x51,239); // Set X End
wr_reg(0x52,0); // Set Y Start
wr_reg(0x53,319); // Set Y End
wait_ms(50);
wr_reg(0x60,0x2700); // Driver Output Control
wr_reg(0x61,0x0001); // Driver Output Control
wr_reg(0x6a,0x0000); // Vertical Srcoll Control
wr_reg(0x80,0x0000); // Display Position Partial Display 1
wr_reg(0x81,0x0000); // RAM Address Start Partial Display 1
wr_reg(0x82,0x0000); // RAM Address End-Partial Display 1
wr_reg(0x83,0x0000); // Displsy Position Partial Display 2
wr_reg(0x84,0x0000); // RAM Address Start Partial Display 2
wr_reg(0x85,0x0000); // RAM Address End Partial Display 2
wr_reg(0x90,(0<<7)|(16<<0)); // Frame Cycle Control
wr_reg(0x92,0x0000); // Panel Interface Control 2
wr_reg(0x93,0x0001); // Panel Interface Control 3
wr_reg(0x95,0x0110); // Frame Cycle Control
wr_reg(0x97,(0<<8));
wr_reg(0x98,0x0000); // Frame Cycle Control
wr_reg(0x07,0x0133);
wait_ms(100);
WindowMax();
}
void SPI_TFT::pixel(int x, int y, int color)
{
switch (orientation)
{
case 0:
wr_reg(0x20, x);
wr_reg(0x21, y);
break;
case 1:
wr_reg(0x20, 239-y);
wr_reg(0x21, x);
break;
case 2:
wr_reg(0x20, 239-x);
wr_reg(0x21, 319-y);
break;
case 3:
wr_reg(0x20, y);
wr_reg(0x21, 319-x);
break;
}
wr_cmd(0x22);
wr_dat(color);
}
void SPI_TFT::window(int x, int y, int w, int h)
{
unsigned int xw1, yh1;
xw1 = x + w - 1;
yh1 = y + h - 1;
wr_reg(0x20, x);
wr_reg(0x21, y);
switch (orientation)
{
case 0:
wr_reg(0x50, x);
wr_reg(0x51, xw1);
wr_reg(0x52, y);
wr_reg(0x53, yh1);
break;
case 1:
wr_reg(0x50, 239 - yh1);
wr_reg(0x51, 239 - y);
wr_reg(0x52, x);
wr_reg(0x53, xw1);
break;
case 2:
wr_reg(0x50, 239 - xw1);
wr_reg(0x51, 239 - x);
wr_reg(0x52, 319 - yh1);
wr_reg(0x53, 319 - y);
break;
case 3:
wr_reg(0x50, y);
wr_reg(0x51, yh1);
wr_reg(0x52, 319 - xw1);
wr_reg(0x53, 319 - x);
break;
}
}
void SPI_TFT::WindowMax(void)
{
window(0, 0, width(), height());
}
void SPI_TFT::cls (void)
{
unsigned long int index=0;
// int color = _background;
wr_reg(0x03, 0x1030);
WindowMax();
SetCursor(0,0);
wr_cmd(0x22);
_cs = 0;
wr_dat_start();
_spi.format(16,3);
int num = width()*height();
for( index = 0; index<num; index++ )
{
_spi.fastWrite(_background);
}
_spi.clearRX();
_spi.format(8,3);
_cs = 1;
}
void SPI_TFT::hline(int x0, int x1, int y, int color)
{
unsigned int index=0;
int w;
w = x1 - x0 + 1;
mod_orientation();
window(x0,y,w,1);
wr_cmd(0x22);
_cs = 0;
wr_dat_start();
_spi.format(16,3);
int num = x1-x0;
for( index = 0; index<num; index++ )
{
_spi.fastWrite(color);
}
_spi.clearRX();
_spi.format(8,3);
_cs = 1;
return;
}
void SPI_TFT::vline(int x, int y0, int y1, int color)
{
unsigned int index=0;
int h;
h = y1 - y0 + 1;
mod_orientation();
window(x,y0,1,h);
wr_cmd(0x22);
_cs = 0;
wr_dat_start();
_spi.format(16,3);
int num = y1-y0;
for( index = 0; index<num; index++ )
{
_spi.fastWrite(color);
}
_spi.clearRX();
_spi.format(8,3);
_cs = 1;
return;
}
void SPI_TFT::line(int x0, int y0, int x1, int y1, int color)
{
wr_reg(0x03, 0x1030);
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 w, int h, int color)
{
hline(x0,x0+w,y0,color);
vline(x0,y0,y0+h,color);
hline(x0,x0+w,y0+h,color);
vline(x0+w,y0,y0+h,color);
return;
}
void SPI_TFT::fillrect(int x0, int y0, int w, int h, int color)
{
unsigned long int index=0;
if (w < 0)
{
x0 = x0 + w;
w = -w;
}
if (h < 0)
{
y0 = y0 + h;
h = -h;
}
mod_orientation();
window(x0,y0,w,h);
wr_cmd(0x22);
_cs = 0;
wr_dat_start();
_spi.format(16,3);
int num = h*w;
for( index = 0; index<num; index++ )
{
_spi.fastWrite(color);
}
_spi.clearRX();
_spi.format(8,3);
_cs = 1;
return;
}
void SPI_TFT::draw_ellipse(int xc, int yc, int a, int b, unsigned int color)
{ /* e(x,y) = b^2*x^2 + a^2*y^2 - a^2*b^2 */
wr_reg(0x03, 0x1030);
WindowMax();
int x = 0, y = b;
long a2 = (long)a*a, b2 = (long)b*b;
long crit1 = -(a2/4 + a%2 + b2);
long crit2 = -(b2/4 + b%2 + a2);
long crit3 = -(b2/4 + b%2);
long t = -a2*y; /* e(x+1/2,y-1/2) - (a^2+b^2)/4 */
long dxt = 2*b2*x, dyt = -2*a2*y;
long d2xt = 2*b2, d2yt = 2*a2;
while (y>=0 && x<=a)
{
pixel(xc+x, yc+y, color);
if (x!=0 || y!=0)
pixel(xc-x, yc-y, color);
if (x!=0 && y!=0)
{
pixel(xc+x, yc-y, color);
pixel(xc-x, yc+y, color);
}
if (t + b2*x <= crit1 || /* e(x+1,y-1/2) <= 0 */
t + a2*y <= crit3) /* e(x+1/2,y) <= 0 */
incx();
else if (t - a2*y > crit2) /* e(x+1/2,y-1) > 0 */
incy();
else
{
incx();
incy();
}
}
}
void SPI_TFT::fill_ellipse(int xc, int yc, int a, int b, unsigned int color)
{ /* e(x,y) = b^2*x^2 + a^2*y^2 - a^2*b^2 */
int x = 0, y = b;
int rx = x, ry = y;
unsigned int width = 1;
unsigned int height = 1;
long a2 = (long)a*a, b2 = (long)b*b;
long crit1 = -(a2/4 + a%2 + b2);
long crit2 = -(b2/4 + b%2 + a2);
long crit3 = -(b2/4 + b%2);
long t = -a2*y; /* e(x+1/2,y-1/2) - (a^2+b^2)/4 */
long dxt = 2*b2*x, dyt = -2*a2*y;
long d2xt = 2*b2, d2yt = 2*a2;
if (b == 0)
{
fillrect(xc-a, yc, 2*a+1, 1, color);
return;
}
while (y>=0 && x<=a)
{
if (t + b2*x <= crit1 || /* e(x+1,y-1/2) <= 0 */
t + a2*y <= crit3) /* e(x+1/2,y) <= 0 */
{
if (height == 1)
; /* draw nothing */
else if (ry*2+1 > (height-1)*2)
{
fillrect(xc-rx, yc-ry, width, height-1, color);
fillrect(xc-rx, yc+ry+1, width, 1-height, color);
ry -= height-1;
height = 1;
}
else
{
fillrect(xc-rx, yc-ry, width, ry*2+1, color);
ry -= ry;
height = 1;
}
incx();
rx++;
width += 2;
}
else if (t - a2*y > crit2) /* e(x+1/2,y-1) > 0 */
{
incy();
height++;
}
else
{
if (ry*2+1 > height*2)
{
fillrect(xc-rx, yc-ry, width, height, color);
fillrect(xc-rx, yc+ry+1, width, -height, color);
}
else
{
fillrect(xc-rx, yc-ry, width, ry*2+1, color);
}
incx();
incy();
rx++;
width += 2;
ry -= height;
height = 1;
}
}
if (ry > height)
{
fillrect(xc-rx, yc-ry, width, height, color);
fillrect(xc-rx, yc+ry+1, width, -height, color);
}
else
{
fillrect(xc-rx, yc-ry, width, ry*2+1, color);
}
}
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;
unsigned char* bitmap_char;
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;
}
}
mod_orientation();
bitmap_char = &font[((c -32) * offset) + 4]; // start of char bitmap
w = bitmap_char[0]; // width of actual char
window(char_x, char_y,w,vert); // char box
wr_cmd(0x22);
_cs = 0;
wr_dat_start();
_spi.format(16,3);
for (j=0; j<vert; j++) // vert line
{
for (i=0; i<w; i++) // horz line
{
z = bitmap_char[bpl * i + ((j & 0xF8) >> 3)+1];
b = 1 << (j & 0x07);
if (( z & b ) == 0x00)
{
_spi.fastWrite(_background);
}
else
{
_spi.fastWrite(_foreground);
}
}
}
_spi.clearRX();
_spi.format(8,3);
_cs = 1;
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 i,j;
unsigned short *bitmap_ptr = (unsigned short *)bitmap;
mod_orientation();
window(x, y, w, h);
wr_cmd(0x22);
_cs = 0;
wr_dat_start();
_spi.format(16,3);
bitmap_ptr += ((h - 1)*w);
for (j = 0; j < h; j++) //Lines
{
for (i = 0; i < w; i++) // copy pixel data to TFT
{
_spi.fastWrite(*bitmap_ptr); // one line
bitmap_ptr++;
}
bitmap_ptr -= 2*w;
}
_spi.clearRX();
_spi.format(8,3);
_cs = 1;
}
int SPI_TFT::Bitmap(unsigned int x, unsigned int y, const char *Name_BMP)
{
// Current code unusable : Rewrite without DMA is needed
#define OffsetPixelWidth 18
#define OffsetPixelHeigh 22
#define OffsetFileSize 34
#define OffsetPixData 10
#define OffsetBPP 28
#define RGB565CONVERT(red, green, blue) (uint16_t)( (( red >> 3 ) << 11 ) | (( green >> 2 ) << 5 ) | ( blue >> 3 ))
unsigned char BMP_Header[54];
unsigned short BPP_t;
unsigned int PixelWidth,PixelHeigh,start_data;
unsigned int i,off;
int padd,j;
unsigned char *line;
int bits;
FILE *Image = fopen(Name_BMP, "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)
bits = 16;
else if (BPP_t == 0x0018)
bits = 24;
else {
fclose(Image);
return(-2); // error no 16/24 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); // too big
}
start_data = BMP_Header[OffsetPixData] + (BMP_Header[OffsetPixData + 1] << 8) + (BMP_Header[OffsetPixData + 2] << 16) + (BMP_Header[OffsetPixData + 3] << 24);
line = (unsigned char *) malloc (bits/8 * PixelWidth); // we need a buffer for a line
unsigned short *line_short = (unsigned short*) (line); // Same one, addressed as short
if (line == NULL) {
return(-4); // error no memory
}
// the bmp lines are padded to multiple of 4 bytes
padd = -1;
do {
padd ++;
} while ((PixelWidth * bits/8 + padd)%4 != 0);
//fseek(Image, 70 ,SEEK_SET);
for (j = PixelHeigh - 1; j >= 0; j--) { //Lines bottom up
off = j * (PixelWidth * bits/8 + padd) + start_data; // start of line
fseek(Image, off ,SEEK_SET);
fread(line,1,PixelWidth * bits/8,Image); // read a line - slow !
mod_orientation();
window(x, y+PixelHeigh - 1 - j,PixelWidth ,1);
wr_cmd(0x22);
_cs = 0;
wr_dat_start();
_spi.format(16, 3);
_spi.setFormat();
//If 24 bit format, do some processing
if (bits == 24) {
for (i = 0; i<PixelWidth; i++) {
line_short[i] = RGB565CONVERT(line[3*i+2], line[3*i+1], line[3*i]);
}
}
for (i = 0; i < PixelWidth; i++) // copy pixel data to TFT
{
_spi.fastWrite(line_short[i]); // one line
}
_spi.clearRX();
_spi.format(8,3);
_cs = 1;
}
free (line);
fclose(Image);
WindowMax();
return(1);
}
