Add pubsub client
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Henrik Ekblad
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/*
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UTouch.cpp - Arduino/chipKit library support for Color TFT LCD Touch screens
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Copyright (C)2010-2014 Henning Karlsen. All right reserved
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Basic functionality of this library are based on the demo-code provided by
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ITead studio. You can find the latest version of the library at
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http://www.henningkarlsen.com/electronics
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If you make any modifications or improvements to the code, I would appreciate
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that you share the code with me so that I might include it in the next release.
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I can be contacted through http://www.henningkarlsen.com/electronics/contact.php
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This library is free software; you can redistribute it and/or
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modify it under the terms of the CC BY-NC-SA 3.0 license.
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Please see the included documents for further information.
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Commercial use of this library requires you to buy a license that
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will allow commercial use. This includes using the library,
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modified or not, as a tool to sell products.
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The license applies to all part of the library including the
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examples and tools supplied with the library.
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*/
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#include "UTouch.h"
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#include "UTouchCD.h"
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#if defined(__AVR__)
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#include "hardware/avr/HW_AVR.inc"
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#elif defined(__PIC32MX__)
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#include "hardware/pic32/HW_PIC32.inc"
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#elif defined(__arm__)
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#include "hardware/arm/HW_ARM.inc"
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#endif
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UTouch::UTouch(byte tclk, byte tcs, byte din, byte dout, byte irq)
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{
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T_CLK = tclk;
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T_CS = tcs;
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T_DIN = din;
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T_DOUT = dout;
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T_IRQ = irq;
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}
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void UTouch::InitTouch(byte orientation)
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{
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orient = orientation;
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_default_orientation = CAL_S>>31;
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touch_x_left = (CAL_X>>14) & 0x3FFF;
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touch_x_right = CAL_X & 0x3FFF;
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touch_y_top = (CAL_Y>>14) & 0x3FFF;
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touch_y_bottom = CAL_Y & 0x3FFF;
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disp_x_size = (CAL_S>>12) & 0x0FFF;
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disp_y_size = CAL_S & 0x0FFF;
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prec = 10;
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P_CLK = portOutputRegister(digitalPinToPort(T_CLK));
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B_CLK = digitalPinToBitMask(T_CLK);
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P_CS = portOutputRegister(digitalPinToPort(T_CS));
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B_CS = digitalPinToBitMask(T_CS);
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P_DIN = portOutputRegister(digitalPinToPort(T_DIN));
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B_DIN = digitalPinToBitMask(T_DIN);
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P_DOUT = portInputRegister(digitalPinToPort(T_DOUT));
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B_DOUT = digitalPinToBitMask(T_DOUT);
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P_IRQ = portInputRegister(digitalPinToPort(T_IRQ));
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B_IRQ = digitalPinToBitMask(T_IRQ);
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pinMode(T_CLK, OUTPUT);
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pinMode(T_CS, OUTPUT);
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pinMode(T_DIN, OUTPUT);
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pinMode(T_DOUT, INPUT);
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pinMode(T_IRQ, OUTPUT);
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sbi(P_CS, B_CS);
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sbi(P_CLK, B_CLK);
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sbi(P_DIN, B_DIN);
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sbi(P_IRQ, B_IRQ);
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}
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void UTouch::read()
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{
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unsigned long tx=0, temp_x=0;
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unsigned long ty=0, temp_y=0;
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unsigned long minx=99999, maxx=0;
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unsigned long miny=99999, maxy=0;
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int datacount=0;
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cbi(P_CS, B_CS);
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pinMode(T_IRQ, INPUT);
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for (int i=0; i<prec; i++)
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{
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if (!rbi(P_IRQ, B_IRQ))
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{
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touch_WriteData(0x90);
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pulse_high(P_CLK, B_CLK);
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temp_x=touch_ReadData();
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if (!rbi(P_IRQ, B_IRQ))
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{
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touch_WriteData(0xD0);
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pulse_high(P_CLK, B_CLK);
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temp_y=touch_ReadData();
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if ((temp_x>0) and (temp_x<4096) and (temp_y>0) and (temp_y<4096))
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{
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tx+=temp_x;
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ty+=temp_y;
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if (prec>5)
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{
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if (temp_x<minx)
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minx=temp_x;
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if (temp_x>maxx)
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maxx=temp_x;
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if (temp_y<miny)
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miny=temp_y;
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if (temp_y>maxy)
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maxy=temp_y;
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}
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datacount++;
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}
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}
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}
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}
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pinMode(T_IRQ, OUTPUT);
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if (prec>5)
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{
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tx = tx-(minx+maxx);
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ty = ty-(miny+maxy);
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datacount -= 2;
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}
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sbi(P_CS, B_CS);
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if ((datacount==(prec-2)) or (datacount==PREC_LOW))
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{
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if (orient == _default_orientation)
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{
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TP_X=ty/datacount;
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TP_Y=tx/datacount;
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}
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else
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{
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TP_X=tx/datacount;
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TP_Y=ty/datacount;
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}
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}
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else
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{
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TP_X=-1;
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TP_Y=-1;
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}
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}
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bool UTouch::dataAvailable()
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{
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bool avail;
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pinMode(T_IRQ, INPUT);
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avail = !(rbi(P_IRQ, B_IRQ));
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pinMode(T_IRQ, OUTPUT);
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return avail;
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}
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int16_t UTouch::getX()
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{
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long c;
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if ((TP_X==-1) or (TP_Y==-1))
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return -1;
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if (orient == _default_orientation)
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{
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c = long(long(TP_X - touch_x_left) * (disp_x_size)) / long(touch_x_right - touch_x_left);
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if (c<0)
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c = 0;
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if (c>disp_x_size)
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c = disp_x_size;
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}
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else
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{
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if (_default_orientation == PORTRAIT)
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c = long(long(TP_X - touch_y_top) * (-disp_y_size)) / long(touch_y_bottom - touch_y_top) + long(disp_y_size);
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else
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c = long(long(TP_X - touch_y_top) * (disp_y_size)) / long(touch_y_bottom - touch_y_top);
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if (c<0)
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c = 0;
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if (c>disp_y_size)
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c = disp_y_size;
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}
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return c;
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}
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int16_t UTouch::getY()
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{
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int c;
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if ((TP_X==-1) or (TP_Y==-1))
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return -1;
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if (orient == _default_orientation)
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{
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c = long(long(TP_Y - touch_y_top) * (disp_y_size)) / long(touch_y_bottom - touch_y_top);
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if (c<0)
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c = 0;
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if (c>disp_y_size)
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c = disp_y_size;
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}
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else
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{
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if (_default_orientation == PORTRAIT)
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c = long(long(TP_Y - touch_x_left) * (disp_x_size)) / long(touch_x_right - touch_x_left);
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else
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c = long(long(TP_Y - touch_x_left) * (-disp_x_size)) / long(touch_x_right - touch_x_left) + long(disp_x_size);
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if (c<0)
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c = 0;
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if (c>disp_x_size)
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c = disp_x_size;
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}
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return c;
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}
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void UTouch::setPrecision(byte precision)
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{
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switch (precision)
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{
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case PREC_LOW:
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prec=1; // DO NOT CHANGE!
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break;
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case PREC_MEDIUM:
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prec=12; // Iterations + 2
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break;
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case PREC_HI:
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prec=27; // Iterations + 2
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break;
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case PREC_EXTREME:
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prec=102; // Iterations + 2
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break;
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default:
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prec=12; // Iterations + 2
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break;
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}
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}
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void UTouch::calibrateRead()
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{
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unsigned long tx=0;
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unsigned long ty=0;
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cbi(P_CS, B_CS);
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touch_WriteData(0x90);
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pulse_high(P_CLK, B_CLK);
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tx=touch_ReadData();
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touch_WriteData(0xD0);
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pulse_high(P_CLK, B_CLK);
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ty=touch_ReadData();
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sbi(P_CS, B_CS);
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TP_X=ty;
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TP_Y=tx;
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}
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