141 lines
3.5 KiB
C++
141 lines
3.5 KiB
C++
/*
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MD_Parola - Library for modular scrolling text and Effects
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See header file for comments
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Copyright (C) 2013 Marco Colli. All rights reserved.
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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 GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <MD_Parola.h>
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#include <MD_Parola_lib.h>
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#include <MD_MAX72xx.h>
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/**
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* \file
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* \brief Implements core MD_Parola class methods
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*/
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MD_Parola::MD_Parola(uint8_t dataPin, uint8_t clkPin, uint8_t csPin, uint8_t numDevices):
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_D(dataPin, clkPin, csPin, numDevices), _numModules(numDevices)
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{
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}
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MD_Parola::MD_Parola(uint8_t csPin, uint8_t numDevices):
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_D(csPin, numDevices), _numModules(numDevices)
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{
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}
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void MD_Parola::begin(uint8_t numZones)
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{
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_D.begin();
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// Check boundaries for the number of zones
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if (numZones == 0) numZones = 1;
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if (numZones > MAX_ZONES) numZones = MAX_ZONES;
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_numZones = numZones;
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// Create the zone objects array
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//_Z = new MD_PZone[_numZones]; // for dynamic array
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for (uint8_t i = 0; i < _numZones; i++)
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_Z[i].begin(&_D);
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// for one zone automatically make it all modules, user will override if not intended
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if (_numZones == 1)
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setZone(0, 0, _numModules - 1);
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// initialise zone-independent options
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setSpeed(10);
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setPause(10*getSpeed());
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setCharSpacing(1);
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setScrollSpacing(0);
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setTextAlignment(PA_LEFT);
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setTextEffect(PA_PRINT, PA_NO_EFFECT);
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setTextBuffer(nullptr);
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setInvert(false);
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setIntensity(MAX_INTENSITY/2);
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// Now set the default viewing parameters for this library
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_D.setFont(nullptr);
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}
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MD_Parola::~MD_Parola(void)
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{
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// release the zone array (dynamically alocated)
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//delete [] _Z;
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}
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bool MD_Parola::setZone(uint8_t z, uint8_t moduleStart, uint8_t moduleEnd)
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{
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if ((moduleStart <= moduleEnd) && (moduleEnd < _numModules) && (z < _numZones))
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{
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_Z[z].setZone(moduleStart, moduleEnd);
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return(true);
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}
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return(false);
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}
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void MD_Parola::displayZoneText(uint8_t z, char *pText, textPosition_t align, uint16_t speed, uint16_t pause, textEffect_t effectIn, textEffect_t effectOut)
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{
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setTextBuffer(z, pText);
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setTextAlignment(z, align);
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setSpeed(z, speed);
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setPause(z, pause);
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setTextEffect(z, effectIn, effectOut);
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displayReset(z);
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}
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bool MD_Parola::displayAnimate(void)
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{
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bool b = false;
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// suspend the display while we animate a frame
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_D.update(MD_MAX72XX::OFF);
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for (uint8_t i = 0; i < _numZones; i++)
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b |= _Z[i].zoneAnimate();
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// re-enable and update the display
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_D.update(MD_MAX72XX::ON);
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return(b);
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}
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size_t MD_Parola::write(const char *str)
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{
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displayText((char *)str, getTextAlignment(), 0, 0, PA_PRINT, PA_NO_EFFECT);
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while (displayAnimate())
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/* do nothing */;
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return(strlen(str));
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}
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size_t MD_Parola::write(const uint8_t *buffer, size_t size)
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{
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char *psz = (char *)malloc(sizeof(char) * (size + 1));
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if (psz == nullptr) return(0);
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memcpy(psz, buffer, size);
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psz[size] = '\0';
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write(psz);
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free(psz);
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return(size);
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}
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