VGA.h library

Source code of VGA2 library (~/libraries/VGA2/VGA.h)

// Arduino Due VGA Library by stimmer

// v0.404 (4/4/2013)

//Modified by Sirio Maccolini 2018 in VGA2

// Added NTSC and PAL colour composite modes

// Fixed some timing problems

// Known bugs:

// Sync timing code is all wrong

// Drawing functions could be faster

// Doesn't work well with Native USB

// White line / missing first pixel in mono modes

// TODO:

// Bitmap / pixmap graphics

// Larger fonts

// printf

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

#ifndef _VGA_H

#define _VGA_H

#include "Arduino.h"

#include "Print.h"

extern unsigned char _vga_font8x8 [];

const int _v_vsync=42;

const int _v_hsync=43;

inline void _v_digitalWriteDirect(int pin, boolean val){

if(val) g_APinDescription[pin].pPort -> PIO_SODR = g_APinDescription[pin].ulPin;

else g_APinDescription[pin].pPort -> PIO_CODR = g_APinDescription[pin].ulPin;

}

#define VGA_MONO 1

#define VGA_COLOUR 2

#define VGA_colour VGA_COLOUR

#define VGA_NTSC 18

#define VGA_PAL 34

class Vga : public Print {

public:

int begin(int x, int y, int m=VGA_MONO);

int beginPAL();

int beginNTSC();

void end();

void clear(int c=0);

void drawPixel(int x, int y, int col);

void drawLine(int x0, int y0, int x1, int y1, int col);

void drawLinex(int x0, int y0, int x1, int y1, int col);

void drawLineXa(int x0, int y0, int x1, int y1, int xplanemin, int xplanemax, int yplanemax, int c);

void drawHLine(int y,int x0, int x1, int col);

void drawVLine(int x,int y0, int y1, int col);

void drawTri(int x0,int y0,int x1,int y1,int x2,int y2,int col);

void fillTri(int x0,int y0,int x1,int y1,int x2,int y2,int col);

void drawRect(int x0, int y0, int x1, int y1, int col);

void fillRect(int x0, int y0, int x1, int y1, int col);

void drawRoundRecta(int ax0, int ay0, int ax1, int ay1, int ar0, int acol);

void fillRoundRecta(int ax0, int ay0, int ax1, int ay1, int ar0, int acol);

void drawArcCircle(int xm, int ym, int r, int quad, int col);

void drawCircle(int xm, int ym, int r, int col);

void drawCircla(int xm, int ym, int r, int col);

void fillCircle(int xm, int ym, int r, int col);

void drawEllipse(int x0, int y0, int x1, int y1, int col);

void fillEllipse(int x0, int y0, int x1, int y1, int col);

void drawText(char *text, int x, int y, int fgcol, int bgcol= -256, int dir=0);

void fillButton(char* title, int ax0, int ay0, int ax1, int ay1, int ar0, int acol, int tcol, int bgcol);

void drawButton(char* title, int ax0, int ay0, int ax1, int ay1, int ar0, int acol, int tcol, int bgcol);

void linpot_H(char linpot_title[40], uint16_t linpot_X, uint16_t linpot_Y, uint16_t linpot_width, uint16_t linpot_Nvalues,uint16_t linpot_value, uint16_t linpot_FGcolour, uint16_t linpot_BGcolour, uint16_t linpot_TFGcolour, uint16_t linpot_TBGcolour, uint16_t linpot_INBGcolour );

void linpot_HR(char linpot_title[40], uint16_t linpot_X, uint16_t linpot_Y, uint16_t linpot_width, uint16_t linpot_Nvalues,uint16_t linpot_value, uint16_t linpot_FGcolour, uint16_t linpot_BGcolour, uint16_t linpot_TFGcolour, uint16_t linpot_TBGcolour, uint16_t linpot_INBGcolour );

void linpot_V(char linpot_title[40], uint16_t linpot_X, uint16_t linpot_Y, uint16_t linpot_width, uint16_t linpot_Nvalues,uint16_t linpot_value, uint16_t linpot_FGcolour, uint16_t linpot_BGcolour, uint16_t linpot_TFGcolour, uint16_t linpot_TBGcolour, uint16_t linpot_INBGcolour );

void drawLP(uint16_t Xoffset, uint16_t Yoffset, uint16_t Xres, uint16_t Yres, uint8_t cutStep, uint8_t NofCuts, uint8_t volume, uint16_t col, uint16_t ways, bool order);

void drawLM(uint16_t Xoffset, uint16_t Yoffset, uint16_t Xres, uint16_t Yres, uint8_t cutStep1, uint8_t cutStep2, uint8_t NofCuts1, uint8_t NofCuts2, uint8_t volume, uint16_t col, uint16_t ways, bool order1, bool order2);

void drawMH(uint16_t Xoffset, uint16_t Yoffset, uint16_t Xres, uint16_t Yres, uint8_t cutStep1, uint8_t cutStep2, uint8_t NofCuts1, uint8_t NofCuts2, uint8_t volume, uint16_t col, uint16_t ways, bool order1, bool order2);

void drawHP(uint16_t Xoffset, uint16_t Yoffset, uint16_t Xres, uint16_t Yres, uint8_t cutStep1, uint8_t NofCuts1, uint8_t volume, uint16_t col, uint16_t ways, bool order);

int hertzValue(uint16_t stepNumber);

int hertzValue2(uint16_t stepNumber);

int hertzValue3(uint16_t stepNumber);

const char* dbValue(uint16_t stepNumber);

const char* resoValue(int stepNumber);

void scroll(int x, int y, int w, int h, int dx, int dy,int col=0);

void moveCursor(int column, int line);

void setPrintWindow(int left, int top, int width, int height);

void unsetPrintWindow(){tww=tw;twh=th;twx=twy=0;}

void clearPrintWindow();

void scrollPrintWindow();

void setInk(int i){ink=i;}

void setPaper(int p){paper=p;}

virtual size_t write(const uint8_t *buffer, size_t size);

virtual size_t write(uint8_t c);

void waitBeam(){while((*(volatile int *)&line) < ysize);}

void waitSync(){while((*(volatile int *)&line) >= ysize);

while((*(volatile int *)&line) < ysize);}

int up; // whether we are running or not

// modeline

int pclock; // must divide 84000000

int xsize,xsyncstart,xsyncend,xtotal;

int ysize,ysyncstart,ysyncend,ytotal;

bool vsyncpol, hsyncpol;

//PAL

const uint16_t *cbt[2];

const uint16_t *crt[2];

uint16_t *dmabuf;

int phase,poff;

// various display parameters

int mode,line,linedouble,synced,framecount;

int xclocks,xstart,xsyncwidth,xscale,yscale,lfreq,ffreq,ltot,debug;

int lfreqmin,lfreqmax,ffreqmin,ffreqmax;

void setMonitorFreqRange(int hmin, int hmax, int vmin, int vmax){

lfreqmin=hmin;lfreqmax=hmax;ffreqmin=vmin;ffreqmax=vmax;}

void setSyncPolarity(bool h, bool v){hsyncpol=h;vsyncpol=v;}

uint16_t *pb; // Pixel buffer memory address

int pw; // Count of words from one line to the next (aka stride or pitch)

int pbsize; // Total size of pixel buffer (note these sizes are 16-bit words)

uint32_t *pbb; // Pixel buffer bit-banding alias address (read the datasheet p75)

int pbw; // Pixel buffer bit-banding stride (in 32-bit words)

// To help understand usage of these, look at the following functions:

void putPPixelFast(int x, int y, int c){pbb[y*pbw+(x^15)]=c;}

int getPPixelFast(int x, int y){return pbb[y*pbw+(x^15)];}

uint8_t *cb; // Colour buffer memory address

int cw; // Colour buffer stride, in bytes

int cbsize; // Size of colour buffer in bytes

void putCPixelFast(int x, int y, int c){cb[y*cw+x]=c;}

int getCPixelFast(int x, int y){return cb[y*cw+x];}

int tx,ty; // Text cursor

int tw,th; // Text width / height

int twx,twy,tww,twh; // Text window

int ink,paper;// Text colours

private:

int calcmodeline();

int allocvideomem();

void freevideomem();

void startinterrupts();

void stopinterrupts();

void starttimers();

void stoptimers();

void startmono();

void stopmono();

void startcolour();

void stopcolour();

void dmapri();

};

extern Vga VGA;

#endif