mirror of
https://codeberg.org/mclemens/ubitxv6.git
synced 2024-09-10 14:54:17 -04:00
597 lines
15 KiB
Arduino
597 lines
15 KiB
Arduino
|
#include <XPT2046_Touchscreen.h>
|
||
|
#include <SPI.h>
|
||
|
//#include "ubitx_font.h"
|
||
|
#include <avr/pgmspace.h>
|
||
|
|
||
|
#define TFT_CS 10
|
||
|
#define TFT_RS 9
|
||
|
|
||
|
// Color definitions
|
||
|
#define ILI9341_BLACK 0x0000 ///< 0, 0, 0
|
||
|
#define ILI9341_NAVY 0x000F ///< 0, 0, 123
|
||
|
#define ILI9341_DARKGREEN 0x03E0 ///< 0, 125, 0
|
||
|
#define ILI9341_DARKCYAN 0x03EF ///< 0, 125, 123
|
||
|
#define ILI9341_MAROON 0x7800 ///< 123, 0, 0
|
||
|
#define ILI9341_PURPLE 0x780F ///< 123, 0, 123
|
||
|
#define ILI9341_OLIVE 0x7BE0 ///< 123, 125, 0
|
||
|
#define ILI9341_LIGHTGREY 0xC618 ///< 198, 195, 198
|
||
|
#define ILI9341_DARKGREY 0x7BEF ///< 123, 125, 123
|
||
|
#define ILI9341_BLUE 0x001F ///< 0, 0, 255
|
||
|
#define ILI9341_GREEN 0x07E0 ///< 0, 255, 0
|
||
|
#define ILI9341_CYAN 0x07FF ///< 0, 255, 255
|
||
|
#define ILI9341_RED 0xF800 ///< 255, 0, 0
|
||
|
#define ILI9341_MAGENTA 0xF81F ///< 255, 0, 255
|
||
|
#define ILI9341_YELLOW 0xFFE0 ///< 255, 255, 0
|
||
|
#define ILI9341_WHITE 0xFFFF ///< 255, 255, 255
|
||
|
#define ILI9341_ORANGE 0xFD20 ///< 255, 165, 0
|
||
|
#define ILI9341_GREENYELLOW 0xAFE5 ///< 173, 255, 41
|
||
|
#define ILI9341_PINK 0xFC18 ///< 255, 130, 198
|
||
|
|
||
|
#define TEXT_LINE_HEIGHT 18
|
||
|
#define TEXT_LINE_INDENT 5
|
||
|
|
||
|
#define BUTTON_PUSH
|
||
|
#define BUTTON_CHECK
|
||
|
#define BUTTON_SPINNER
|
||
|
|
||
|
|
||
|
GFXfont *gfxFont = NULL;
|
||
|
XPT2046_Touchscreen ts(CS_PIN);
|
||
|
TS_Point ts_point;
|
||
|
|
||
|
//filled from a test run of calibration routine
|
||
|
int slope_x=104, slope_y=137, offset_x=28, offset_y=29;
|
||
|
|
||
|
void readTouchCalibration(){
|
||
|
EEPROM.get(SLOPE_X, slope_x);
|
||
|
EEPROM.get(SLOPE_Y, slope_y);
|
||
|
EEPROM.get(OFFSET_X, offset_x);
|
||
|
EEPROM.get(OFFSET_Y, offset_y);
|
||
|
|
||
|
if (slope_x < 10 || 200 < slope_x){
|
||
|
slope_x=104;
|
||
|
slope_y=137;
|
||
|
offset_x=28;
|
||
|
offset_y=29;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void writeTouchCalibration(){
|
||
|
EEPROM.put(SLOPE_X, slope_x);
|
||
|
EEPROM.put(SLOPE_Y, slope_y);
|
||
|
EEPROM.put(OFFSET_X, offset_x);
|
||
|
EEPROM.put(OFFSET_Y, offset_y);
|
||
|
}
|
||
|
|
||
|
boolean readTouch(){
|
||
|
|
||
|
boolean istouched = ts.touched();
|
||
|
if (istouched) {
|
||
|
ts_point = ts.getPoint();
|
||
|
return true;
|
||
|
}
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
void scaleTouch(TS_Point *p){
|
||
|
p->x = ((long)(p->x) * 10l)/(long)(slope_x) - offset_x;
|
||
|
p->y = ((long)(p->y) * 10l)/(long)(slope_y) - offset_y;
|
||
|
}
|
||
|
|
||
|
|
||
|
#if !defined(__INT_MAX__) || (__INT_MAX__ > 0xFFFF)
|
||
|
#define pgm_read_pointer(addr) ((void *)pgm_read_dword(addr))
|
||
|
#else
|
||
|
#define pgm_read_pointer(addr) ((void *)pgm_read_word(addr))
|
||
|
#endif
|
||
|
|
||
|
inline GFXglyph * pgm_read_glyph_ptr(const GFXfont *gfxFont, uint8_t c)
|
||
|
{
|
||
|
#ifdef __AVR__
|
||
|
return &(((GFXglyph *)pgm_read_pointer(&gfxFont->glyph))[c]);
|
||
|
#else
|
||
|
// expression in __AVR__ section may generate "dereferencing type-punned pointer will break strict-aliasing rules" warning
|
||
|
// In fact, on other platforms (such as STM32) there is no need to do this pointer magic as program memory may be read in a usual way
|
||
|
// So expression may be simplified
|
||
|
return gfxFont->glyph + c;
|
||
|
#endif //__AVR__
|
||
|
}
|
||
|
|
||
|
inline uint8_t * pgm_read_bitmap_ptr(const GFXfont *gfxFont)
|
||
|
{
|
||
|
#ifdef __AVR__
|
||
|
return (uint8_t *)pgm_read_pointer(&gfxFont->bitmap);
|
||
|
#else
|
||
|
// expression in __AVR__ section generates "dereferencing type-punned pointer will break strict-aliasing rules" warning
|
||
|
// In fact, on other platforms (such as STM32) there is no need to do this pointer magic as program memory may be read in a usual way
|
||
|
// So expression may be simplified
|
||
|
return gfxFont->bitmap;
|
||
|
#endif //__AVR__
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
inline static void utft_write(unsigned char d)
|
||
|
{
|
||
|
SPI.transfer(d);
|
||
|
}
|
||
|
|
||
|
inline static void utftCmd(unsigned char VH)
|
||
|
{
|
||
|
*(portOutputRegister(digitalPinToPort(TFT_RS))) &= ~digitalPinToBitMask(TFT_RS);//LCD_RS=0;
|
||
|
utft_write(VH);
|
||
|
}
|
||
|
|
||
|
inline static void utftData(unsigned char VH)
|
||
|
{
|
||
|
*(portOutputRegister(digitalPinToPort(TFT_RS)))|= digitalPinToBitMask(TFT_RS);//LCD_RS=1;
|
||
|
utft_write(VH);
|
||
|
}
|
||
|
/*
|
||
|
void utftCmd_Data(unsigned char com,unsigned char dat)
|
||
|
{
|
||
|
utftCmd(com);
|
||
|
utftData(dat);
|
||
|
}
|
||
|
*/
|
||
|
static void utftAddress(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
|
||
|
{
|
||
|
utftCmd(0x2a);
|
||
|
utftData(x1>>8);
|
||
|
utftData(x1);
|
||
|
utftData(x2>>8);
|
||
|
utftData(x2);
|
||
|
utftCmd(0x2b);
|
||
|
utftData(y1>>8);
|
||
|
utftData(y1);
|
||
|
utftData(y2>>8);
|
||
|
utftData(y2);
|
||
|
utftCmd(0x2c);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
inline void utftQuickfill(int16_t x1, int16_t y1, int16_t w, int16_t h, uint16_t color) {
|
||
|
int16_t x2, y2;
|
||
|
x2 = x1 + w;
|
||
|
y2 = y1 + h;
|
||
|
setAddrWindow(x, y, x2, y2);
|
||
|
writeColor(color, (uint32_t)w * h);
|
||
|
}
|
||
|
*/
|
||
|
|
||
|
void utftPixel(unsigned int x, unsigned int y, unsigned int c)
|
||
|
{
|
||
|
unsigned int i,j;
|
||
|
digitalWrite(TFT_CS,LOW);
|
||
|
utftCmd(0x02c); //write_memory_start
|
||
|
//digitalWrite(RS,HIGH);
|
||
|
//l=l+x;
|
||
|
utftAddress(x,y,x,y);
|
||
|
//j=l*2;
|
||
|
//for(i=1;i<=j;i++)
|
||
|
//{
|
||
|
utftData(c>>8);
|
||
|
utftData(c);
|
||
|
|
||
|
//utftData(c);
|
||
|
//utftData(c);
|
||
|
//}
|
||
|
digitalWrite(TFT_CS,HIGH);
|
||
|
}
|
||
|
|
||
|
|
||
|
void utftHline(unsigned int x, unsigned int y, unsigned int l, unsigned int c)
|
||
|
{
|
||
|
unsigned int i,j;
|
||
|
digitalWrite(TFT_CS,LOW);
|
||
|
utftCmd(0x02c); //write_memory_start
|
||
|
//digitalWrite(RS,HIGH);
|
||
|
l=l+x;
|
||
|
utftAddress(x,y,l,y);
|
||
|
// j=l*2;
|
||
|
j = l;
|
||
|
for(i=1;i<=j;i++)
|
||
|
{
|
||
|
utftData(c>>8);
|
||
|
utftData(c);
|
||
|
}
|
||
|
digitalWrite(TFT_CS,HIGH);
|
||
|
checkCAT();
|
||
|
}
|
||
|
|
||
|
void displayClear(unsigned int j)
|
||
|
{
|
||
|
unsigned int i,m;
|
||
|
digitalWrite(TFT_CS,LOW);
|
||
|
utftAddress(0,0,320,240);
|
||
|
for(i=0;i<320;i++)
|
||
|
for(m=0;m<240;m++)
|
||
|
{
|
||
|
utftData(j>>8);
|
||
|
utftData(j);
|
||
|
}
|
||
|
digitalWrite(TFT_CS,HIGH);
|
||
|
}
|
||
|
|
||
|
void utftVline(unsigned int x, unsigned int y, unsigned int l, unsigned int c)
|
||
|
{
|
||
|
unsigned int i,j;
|
||
|
digitalWrite(TFT_CS,LOW);
|
||
|
utftCmd(0x02c); //write_memory_start
|
||
|
//digitalWrite(RS,HIGH);
|
||
|
l=l+y;
|
||
|
utftAddress(x,y,x,l);
|
||
|
//j=l*2;
|
||
|
j = l;
|
||
|
for(i=1;i<=l;i++)
|
||
|
{
|
||
|
utftData(c>>8);
|
||
|
utftData(c);
|
||
|
}
|
||
|
digitalWrite(TFT_CS,HIGH);
|
||
|
checkCAT();
|
||
|
}
|
||
|
|
||
|
void utftRect(unsigned int x,unsigned int y,unsigned int w,unsigned int h,unsigned int c)
|
||
|
{
|
||
|
utftHline(x , y , w, c);
|
||
|
utftHline(x , y+h, w, c);
|
||
|
utftVline(x , y , h, c);
|
||
|
utftVline(x+w, y , h, c);
|
||
|
}
|
||
|
|
||
|
void utftFillrect(unsigned int x,unsigned int y,unsigned int w,unsigned int h,unsigned int c)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
for(i=0;i<h;i++)
|
||
|
{
|
||
|
//utftHline(x , y , w, c);
|
||
|
utftHline(x , y+i, w, c);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void displayInit(void)
|
||
|
{
|
||
|
SPI.begin();
|
||
|
SPI.setClockDivider(SPI_CLOCK_DIV4); // 4 MHz (half speed)
|
||
|
SPI.setBitOrder(MSBFIRST);
|
||
|
SPI.setDataMode(SPI_MODE0);
|
||
|
|
||
|
gfxFont = &ubitx_font;
|
||
|
pinMode(TFT_CS,OUTPUT);
|
||
|
pinMode(TFT_RS,OUTPUT);
|
||
|
|
||
|
|
||
|
digitalWrite(TFT_CS,LOW); //CS
|
||
|
utftCmd(0xCB);
|
||
|
utftData(0x39);
|
||
|
utftData(0x2C);
|
||
|
utftData(0x00);
|
||
|
utftData(0x34);
|
||
|
utftData(0x02);
|
||
|
|
||
|
utftCmd(0xCF);
|
||
|
utftData(0x00);
|
||
|
utftData(0XC1);
|
||
|
utftData(0X30);
|
||
|
|
||
|
utftCmd(0xE8);
|
||
|
utftData(0x85);
|
||
|
utftData(0x00);
|
||
|
utftData(0x78);
|
||
|
|
||
|
utftCmd(0xEA);
|
||
|
utftData(0x00);
|
||
|
utftData(0x00);
|
||
|
|
||
|
utftCmd(0xED);
|
||
|
utftData(0x64);
|
||
|
utftData(0x03);
|
||
|
utftData(0X12);
|
||
|
utftData(0X81);
|
||
|
|
||
|
utftCmd(0xF7);
|
||
|
utftData(0x20);
|
||
|
|
||
|
utftCmd(0xC0); //Power control
|
||
|
utftData(0x23); //VRH[5:0]
|
||
|
|
||
|
utftCmd(0xC1); //Power control
|
||
|
utftData(0x10); //SAP[2:0];BT[3:0]
|
||
|
|
||
|
utftCmd(0xC5); //VCM control
|
||
|
utftData(0x3e); //Contrast
|
||
|
utftData(0x28);
|
||
|
|
||
|
utftCmd(0xC7); //VCM control2
|
||
|
utftData(0x86); //--
|
||
|
|
||
|
utftCmd(0x36); // Memory Access Control
|
||
|
utftData(0x28); // Make this horizontal display
|
||
|
|
||
|
utftCmd(0x3A);
|
||
|
utftData(0x55);
|
||
|
|
||
|
utftCmd(0xB1);
|
||
|
utftData(0x00);
|
||
|
utftData(0x18);
|
||
|
|
||
|
utftCmd(0xB6); // Display Function Control
|
||
|
utftData(0x08);
|
||
|
utftData(0x82);
|
||
|
utftData(0x27);
|
||
|
|
||
|
utftCmd(0x11); //Exit Sleep
|
||
|
delay(120);
|
||
|
|
||
|
utftCmd(0x29); //Display on
|
||
|
utftCmd(0x2c);
|
||
|
digitalWrite(TFT_CS,HIGH);
|
||
|
|
||
|
//now to init the touch screen controller
|
||
|
ts.begin();
|
||
|
ts.setRotation(1);
|
||
|
|
||
|
readTouchCalibration();
|
||
|
}
|
||
|
|
||
|
|
||
|
// Draw a character
|
||
|
/**************************************************************************/
|
||
|
/*!
|
||
|
@brief Draw a single character
|
||
|
@param x Bottom left corner x coordinate
|
||
|
@param y Bottom left corner y coordinate
|
||
|
@param c The 8-bit font-indexed character (likely ascii)
|
||
|
@param color 16-bit 5-6-5 Color to draw chraracter with
|
||
|
@param bg 16-bit 5-6-5 Color to fill background with (if same as color, no background)
|
||
|
@param size_x Font magnification level in X-axis, 1 is 'original' size
|
||
|
@param size_y Font magnification level in Y-axis, 1 is 'original' size
|
||
|
*/
|
||
|
/**************************************************************************/
|
||
|
#define FAST_TEXT 1
|
||
|
|
||
|
void displayChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg) {
|
||
|
c -= (uint8_t)pgm_read_byte(&gfxFont->first);
|
||
|
GFXglyph *glyph = pgm_read_glyph_ptr(gfxFont, c);
|
||
|
uint8_t *bitmap = pgm_read_bitmap_ptr(gfxFont);
|
||
|
|
||
|
uint16_t bo = pgm_read_word(&glyph->bitmapOffset);
|
||
|
uint8_t w = pgm_read_byte(&glyph->width),
|
||
|
h = pgm_read_byte(&glyph->height);
|
||
|
int8_t xo = pgm_read_byte(&glyph->xOffset),
|
||
|
yo = pgm_read_byte(&glyph->yOffset);
|
||
|
uint8_t xx, yy, bits = 0, bit = 0;
|
||
|
int16_t xo16 = 0, yo16 = 0;
|
||
|
|
||
|
digitalWrite(TFT_CS,LOW);
|
||
|
|
||
|
#ifdef FAST_TEXT
|
||
|
uint16_t hpc = 0; // Horizontal foreground pixel count
|
||
|
for(yy=0; yy<h; yy++) {
|
||
|
for(xx=0; xx<w; xx++) {
|
||
|
if(bit == 0) {
|
||
|
bits = pgm_read_byte(&bitmap[bo++]);
|
||
|
bit = 0x80;
|
||
|
}
|
||
|
if(bits & bit) hpc++;
|
||
|
else {
|
||
|
if (hpc) {
|
||
|
utftHline(x+xo+xx-hpc, y+yo+yy, hpc, color);
|
||
|
hpc=0;
|
||
|
}
|
||
|
}
|
||
|
bit >>= 1;
|
||
|
}
|
||
|
// Draw pixels for this line as we are about to increment yy
|
||
|
if (hpc) {
|
||
|
utftHline(x+xo+xx-hpc, y+yo+yy, hpc, color);
|
||
|
hpc=0;
|
||
|
}
|
||
|
checkCAT();
|
||
|
}
|
||
|
#else
|
||
|
for(yy=0; yy<h; yy++) {
|
||
|
for(xx=0; xx<w; xx++) {
|
||
|
if(!(bit++ & 7)) {
|
||
|
bits = pgm_read_byte(&bitmap[bo++]);
|
||
|
}
|
||
|
if(bits & 0x80) {
|
||
|
utftPixel(x+xo+xx, y+yo+yy, color);
|
||
|
}
|
||
|
bits <<= 1;
|
||
|
}
|
||
|
checkCAT();
|
||
|
}
|
||
|
#endif
|
||
|
}
|
||
|
/*
|
||
|
void displayChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg) {
|
||
|
|
||
|
// Character is assumed previously filtered by write() to eliminate
|
||
|
// newlines, returns, non-printable characters, etc. Calling
|
||
|
// drawChar() directly with 'bad' characters of font may cause mayhem!
|
||
|
|
||
|
c -= (uint8_t)pgm_read_byte(&gfxFont->first);
|
||
|
GFXglyph *glyph = pgm_read_glyph_ptr(gfxFont, c);
|
||
|
uint8_t *bitmap = pgm_read_bitmap_ptr(gfxFont);
|
||
|
|
||
|
uint16_t bo = pgm_read_word(&glyph->bitmapOffset);
|
||
|
uint8_t w = pgm_read_byte(&glyph->width),
|
||
|
h = pgm_read_byte(&glyph->height);
|
||
|
int8_t xo = pgm_read_byte(&glyph->xOffset),
|
||
|
yo = pgm_read_byte(&glyph->yOffset);
|
||
|
uint8_t xx, yy, bits = 0, bit = 0;
|
||
|
int16_t xo16 = 0, yo16 = 0;
|
||
|
|
||
|
digitalWrite(TFT_CS,LOW);
|
||
|
|
||
|
for(yy=0; yy<h; yy++) {
|
||
|
for(xx=0; xx<w; xx++) {
|
||
|
if(!(bit++ & 7)) {
|
||
|
bits = pgm_read_byte(&bitmap[bo++]);
|
||
|
}
|
||
|
if(bits & 0x80) {
|
||
|
utftPixel(x+xo+xx, y+yo+yy, color);
|
||
|
}
|
||
|
// else
|
||
|
// utftPixel(x+xo+xx, y+yo+yy, bg);
|
||
|
|
||
|
bits <<= 1;
|
||
|
}
|
||
|
checkCAT();
|
||
|
}
|
||
|
digitalWrite(TFT_CS,HIGH);
|
||
|
}
|
||
|
*/
|
||
|
|
||
|
int displayTextExtent(char *text) {
|
||
|
|
||
|
int ext = 0;
|
||
|
while(*text){
|
||
|
char c = *text++;
|
||
|
uint8_t first = pgm_read_byte(&gfxFont->first);
|
||
|
if((c >= first) && (c <= (uint8_t)pgm_read_byte(&gfxFont->last))) {
|
||
|
GFXglyph *glyph = pgm_read_glyph_ptr(gfxFont, c - first);
|
||
|
ext += (uint8_t)pgm_read_byte(&glyph->xAdvance);
|
||
|
}
|
||
|
}//end of the while loop of the characters to be printed
|
||
|
return ext;
|
||
|
}
|
||
|
|
||
|
void displayRawText(char *text, int x1, int y1, int color, int background){
|
||
|
while(*text){
|
||
|
char c = *text++;
|
||
|
|
||
|
uint8_t first = pgm_read_byte(&gfxFont->first);
|
||
|
if((c >= first) && (c <= (uint8_t)pgm_read_byte(&gfxFont->last))) {
|
||
|
|
||
|
GFXglyph *glyph = pgm_read_glyph_ptr(gfxFont, c - first);
|
||
|
uint8_t w = pgm_read_byte(&glyph->width),
|
||
|
h = pgm_read_byte(&glyph->height);
|
||
|
if((w > 0) && (h > 0)) { // Is there an associated bitmap?
|
||
|
int16_t xo = (int8_t)pgm_read_byte(&glyph->xOffset); // sic
|
||
|
displayChar(x1, y1+TEXT_LINE_HEIGHT, c, color, background);
|
||
|
checkCAT();
|
||
|
}
|
||
|
x1 += (uint8_t)pgm_read_byte(&glyph->xAdvance);
|
||
|
}
|
||
|
}//end of the while loop of the characters to be printed
|
||
|
|
||
|
}
|
||
|
|
||
|
// The generic routine to display one line on the LCD
|
||
|
void displayText(char *text, int x1, int y1, int w, int h, int color, int background, int border) {
|
||
|
|
||
|
utftFillrect(x1, y1, w ,h, background);
|
||
|
utftRect(x1, y1, w ,h, border);
|
||
|
|
||
|
x1 += (w - displayTextExtent(text))/2;
|
||
|
y1 += (h - TEXT_LINE_HEIGHT)/2;
|
||
|
while(*text){
|
||
|
char c = *text++;
|
||
|
|
||
|
uint8_t first = pgm_read_byte(&gfxFont->first);
|
||
|
if((c >= first) && (c <= (uint8_t)pgm_read_byte(&gfxFont->last))) {
|
||
|
|
||
|
GFXglyph *glyph = pgm_read_glyph_ptr(gfxFont, c - first);
|
||
|
uint8_t w = pgm_read_byte(&glyph->width),
|
||
|
h = pgm_read_byte(&glyph->height);
|
||
|
if((w > 0) && (h > 0)) { // Is there an associated bitmap?
|
||
|
int16_t xo = (int8_t)pgm_read_byte(&glyph->xOffset); // sic
|
||
|
displayChar(x1, y1+TEXT_LINE_HEIGHT, c, color, background);
|
||
|
checkCAT();
|
||
|
}
|
||
|
x1 += (uint8_t)pgm_read_byte(&glyph->xAdvance);
|
||
|
}
|
||
|
}//end of the while loop of the characters to be printed
|
||
|
}
|
||
|
|
||
|
void setupTouch(){
|
||
|
int x1, y1, x2, y2, x3, y3, x4, y4;
|
||
|
|
||
|
displayClear(ILI9341_BLACK);
|
||
|
displayText("Click on the cross", 20,100, 200, 50, ILI9341_WHITE, ILI9341_BLACK, ILI9341_BLACK);
|
||
|
|
||
|
// TOP-LEFT
|
||
|
utftHline(10,20,20,ILI9341_WHITE);
|
||
|
utftVline(20,10,20, ILI9341_WHITE);
|
||
|
|
||
|
while(!readTouch())
|
||
|
delay(100);
|
||
|
while(readTouch())
|
||
|
delay(100);
|
||
|
x1 = ts_point.x;
|
||
|
y1 = ts_point.y;
|
||
|
|
||
|
//rubout the previous one
|
||
|
utftHline(10,20,20,ILI9341_BLACK);
|
||
|
utftVline(20,10,20, ILI9341_BLACK);
|
||
|
|
||
|
delay(1000);
|
||
|
|
||
|
//TOP RIGHT
|
||
|
utftHline(290,20,20,ILI9341_WHITE);
|
||
|
utftVline(300,10,20, ILI9341_WHITE);
|
||
|
|
||
|
while(!readTouch())
|
||
|
delay(100);
|
||
|
while(readTouch())
|
||
|
delay(100);
|
||
|
x2 = ts_point.x;
|
||
|
y2 = ts_point.y;
|
||
|
|
||
|
utftHline(290,20,20,ILI9341_BLACK);
|
||
|
utftVline(300,10,20, ILI9341_BLACK);
|
||
|
|
||
|
delay(1000);
|
||
|
|
||
|
//BOTTOM LEFT
|
||
|
utftHline(10,220,20,ILI9341_WHITE);
|
||
|
utftVline(20,210,20, ILI9341_WHITE);
|
||
|
|
||
|
while(!readTouch())
|
||
|
delay(100);
|
||
|
x3 = ts_point.x;
|
||
|
y3 = ts_point.y;
|
||
|
|
||
|
while(readTouch())
|
||
|
delay(100);
|
||
|
utftHline(10,220,20,ILI9341_BLACK);
|
||
|
utftVline(20,210,20, ILI9341_BLACK);
|
||
|
|
||
|
delay(1000);
|
||
|
|
||
|
//BOTTOM RIGHT
|
||
|
utftHline(290,220,20,ILI9341_WHITE);
|
||
|
utftVline(300,210,20, ILI9341_WHITE);
|
||
|
|
||
|
while(!readTouch())
|
||
|
delay(100);
|
||
|
x4 = ts_point.x;
|
||
|
y4 = ts_point.y;
|
||
|
|
||
|
|
||
|
utftHline(290,220,20,ILI9341_BLACK);
|
||
|
utftVline(300,210,20, ILI9341_BLACK);
|
||
|
|
||
|
// we average two readings and divide them by half and store them as scaled integers 10 times their actual value
|
||
|
slope_x = ((x4 - x3) + (x2 - x1))/60; // divide by 300 will give each span it's slope, we add two of them so division reduces to 150 and then by 10 to scale it up : 15
|
||
|
slope_y = ((y3 - y1) + (y4 - y2))/44;
|
||
|
//x1, y1 is at 10 pixels
|
||
|
offset_x = x1 * 10 / slope_x - 10;
|
||
|
offset_y = y1 * 10 / slope_y - 10;
|
||
|
|
||
|
/* //for debugging
|
||
|
Serial.print(slope_x); Serial.print(' ');
|
||
|
Serial.print(slope_y); Serial.print(' ');
|
||
|
Serial.print(offset_x); Serial.print(' ');
|
||
|
Serial.println(offset_y); Serial.print(' ');
|
||
|
*/
|
||
|
writeTouchCalibration();
|
||
|
displayClear(ILI9341_BLACK);
|
||
|
}
|
||
|
|
||
|
|