ubitxv6/nano_gui.cpp

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#include <Arduino.h>
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#include "nano_gui.h"
#include "colors.h"
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#include "pin_definitions.h"
#include "scratch_space.h"
#include "settings.h"
#include "touch.h"
#include <SPI.h>
#include <avr/pgmspace.h>
/*****************
* Begin TFT functions
*****************/
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#define ILI9341_CS_PIN PIN_TFT_CS
#define ILI9341_DC_PIN PIN_TFT_DC
#define ILI9341_SAVE_SPCR (1) //Save state before/after to play nice with the touch screen
#include "PDQ_MinLib/PDQ_ILI9341.h"
PDQ_ILI9341 tft;
#include "nano_font.h"
void displayInit(void){
//Pulling this low 6 times should exit deep sleep mode
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pinMode(PIN_TFT_CS,OUTPUT);
for(uint8_t i = 0; i < 6; ++i){
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digitalWrite(PIN_TFT_CS,HIGH);
digitalWrite(PIN_TFT_CS,LOW);
}
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digitalWrite(PIN_TFT_CS,HIGH);//Disable writing for now
tft.begin();
tft.setFont(ubitx_font);
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tft.setTextWrap(true);
tft.setTextColor(DISPLAY_GREEN,DISPLAY_BLACK);
tft.setTextSize(3);
tft.setRotation(1);
}
void displayPixel(unsigned int x, unsigned int y, unsigned int c){
tft.fillRect(x,y,1,1,c);
}
void displayHline(unsigned int x, unsigned int y, unsigned int w, unsigned int c){
tft.fillRect(x,y,w,1,c);
}
void displayVline(unsigned int x, unsigned int y, unsigned int l, unsigned int c){
tft.fillRect(x,y,1,l,c);
}
void displayClear(unsigned int color){
tft.fillRect(0,0,320,240,color);
}
void displayRect(unsigned int x,unsigned int y,unsigned int w,unsigned int h,unsigned int c){
tft.fillRect(x,y,w,1,c);
tft.fillRect(x,y,1,h,c);
tft.fillRect(x,y+h-1,w,1,c);
tft.fillRect(x+w-1,y,1,h,c);
}
void displayFillrect(unsigned int x,unsigned int y,unsigned int w,unsigned int h,unsigned int c){
tft.fillRect(x,y,w,h,c);
}
void displayChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg) {
tft.drawCharGFX(x,y,c,color,bg,1);
}
void displayRawText(const char *text, int x1, int y1, int w, int color, int background){
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tft.setTextColor(color,background);
tft.setCursor(x1,y1);
tft.setBound(x1,x1+w);
tft.print(text);
}
void displayText(const char *const text, int x1, int y1, int w, int h, int color, int background, int border, TextJustification_e justification)
{
displayFillrect(x1, y1, w ,h, background);
displayRect(x1, y1, w ,h, border);
int16_t x1_out;
int16_t y1_out;
uint16_t width_out;
uint16_t height_out;
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tft.getTextBounds(text,x1,y1,&x1_out,&y1_out,&width_out,&height_out,w);
if(TextJustification_e::Center == justification){
x1 += (w - ( (int32_t)width_out + (x1_out-x1)))/2;
}
else if(TextJustification_e::Right == justification){
x1 += w - ((int32_t)width_out + (x1_out-x1));
}
else{
x1 += 2;//Give a little bit of padding from the border
}
y1 += (ubitx_font->yAdvance + h - ( (int32_t)height_out))/2;
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displayRawText(text,x1,y1,w,color,background);
}
void drawCross(int16_t x_center,int16_t y_center,uint16_t color)
{
constexpr uint8_t HALF_SIZE = 10;
displayHline(x_center-HALF_SIZE,y_center,2*HALF_SIZE,color);
displayVline(x_center,y_center-HALF_SIZE,2*HALF_SIZE,color);
}
void setupTouch(){
constexpr int16_t CROSS_CORNER_OFFSET = 20;
constexpr Point CROSS_CORNER_POINTS [] = {
{CROSS_CORNER_OFFSET,CROSS_CORNER_OFFSET},//Top left
{PDQ_ILI9341::ILI9341_TFTHEIGHT-CROSS_CORNER_OFFSET,CROSS_CORNER_OFFSET},//Top right
{CROSS_CORNER_OFFSET, PDQ_ILI9341::ILI9341_TFTWIDTH-CROSS_CORNER_OFFSET},//Bottom left
{PDQ_ILI9341::ILI9341_TFTHEIGHT-CROSS_CORNER_OFFSET,PDQ_ILI9341::ILI9341_TFTWIDTH-CROSS_CORNER_OFFSET}//Bottom right
};
displayClear(DISPLAY_BLACK);
strncpy_P(b,(const char*)F("Click on the cross"),sizeof(b));
displayText(b, 20,100, 200, 50, DISPLAY_WHITE, DISPLAY_BLACK, DISPLAY_BLACK);
Point cal_points[sizeof(CROSS_CORNER_POINTS)/sizeof(CROSS_CORNER_POINTS[0])];
for(uint8_t i = 0; i < sizeof(CROSS_CORNER_POINTS)/sizeof(CROSS_CORNER_POINTS[0]); ++i){
drawCross(CROSS_CORNER_POINTS[i].x,CROSS_CORNER_POINTS[i].y,DISPLAY_WHITE);
while(!readTouch(&cal_points[i])){
delay(100);
}
while(readTouch(&cal_points[i])){
delay(100);
}
drawCross(CROSS_CORNER_POINTS[i].x,CROSS_CORNER_POINTS[i].y,DISPLAY_BLACK);
delay(1000);//Ensure that nobody is pressing the screen before we do the next point
}
//We can get nicer scaling if we allow more resolution on the divisor
constexpr int32_t SCALE_SENSITIVITY_MULTIPLIER = 10;
const int16_t diff_x_top = cal_points[1].x - cal_points[0].x;
const int16_t diff_x_bottom = cal_points[3].x - cal_points[2].x;
constexpr int32_t diff_x_target = CROSS_CORNER_POINTS[1].x - CROSS_CORNER_POINTS[0].x;
//Average the measured differences
globalSettings.touchSlopeX = SCALE_SENSITIVITY_MULTIPLIER*(diff_x_top + diff_x_bottom) / (2*diff_x_target);
const int16_t diff_y_left = cal_points[2].y - cal_points[0].y;
const int16_t diff_y_right = cal_points[3].y - cal_points[1].y;
constexpr int32_t diff_y_target = CROSS_CORNER_POINTS[2].y - CROSS_CORNER_POINTS[0].y;
//Average the measured differences
globalSettings.touchSlopeY = SCALE_SENSITIVITY_MULTIPLIER*(diff_y_left + diff_y_right) / (2*diff_y_target);
globalSettings.touchOffsetX = cal_points[0].x - ((CROSS_CORNER_OFFSET * globalSettings.touchSlopeX)/SCALE_SENSITIVITY_MULTIPLIER);
globalSettings.touchOffsetY = cal_points[0].y - ((CROSS_CORNER_OFFSET * globalSettings.touchSlopeY)/SCALE_SENSITIVITY_MULTIPLIER);
/*
Serial.print(x1);Serial.print(':');Serial.println(y1);
Serial.print(x2);Serial.print(':');Serial.println(y2);
Serial.print(x3);Serial.print(':');Serial.println(y3);
Serial.print(x4);Serial.print(':');Serial.println(y4);
//for debugging
Serial.print(globalSettings.touchSlopeX); Serial.print(' ');
Serial.print(globalSettings.touchSlopeY); Serial.print(' ');
Serial.print(globalSettings.touchOffsetX); Serial.print(' ');
Serial.println(globalSettings.touchOffsetY); Serial.println(' ');
*/
SaveSettingsToEeprom();
displayClear(DISPLAY_BLACK);
}