ChuaVGA - Chua oscillator - uVGAII(SGC) 4DGL color version …

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Kamil Ondrousek / Mbed 2 deprecated ChuaVGA

Chua oscillator - uVGAII(SGC) 4DGL color version 640x480 pin p9 - rx, pin p10 - tx, pin p11 - rst

main.cpp@0:2e86b4b28ea1, 2011-09-03 (annotated)

Committer:: JLS
Date:: Sat Sep 03 13:59:44 2011 +0000
Revision:: 0:2e86b4b28ea1

Who changed what in which revision?

User	Revision	Line number	New contents of line
JLS	0:2e86b4b28ea1	1	#include "mbed.h"
JLS	0:2e86b4b28ea1	2
JLS	0:2e86b4b28ea1	3	Serial _cmd (p9, p10);
JLS	0:2e86b4b28ea1	4	DigitalOut _rst (p11);
JLS	0:2e86b4b28ea1	5
JLS	0:2e86b4b28ea1	6	void startVGA();
JLS	0:2e86b4b28ea1	7	void baudrate();
JLS	0:2e86b4b28ea1	8	void cls();
JLS	0:2e86b4b28ea1	9	void pixel(int, int, int);
JLS	0:2e86b4b28ea1	10	int writeCOM(char *, int);
JLS	0:2e86b4b28ea1	11
JLS	0:2e86b4b28ea1	12
JLS	0:2e86b4b28ea1	13	int main() {
JLS	0:2e86b4b28ea1	14
JLS	0:2e86b4b28ea1	15	startVGA ();
JLS	0:2e86b4b28ea1	16
JLS	0:2e86b4b28ea1	17	float x = 0.5;
JLS	0:2e86b4b28ea1	18	float y = 0.25;
JLS	0:2e86b4b28ea1	19	float z = 0.125;
JLS	0:2e86b4b28ea1	20	float oldx = 0;
JLS	0:2e86b4b28ea1	21	float oldy = 0;
JLS	0:2e86b4b28ea1	22	float oldz = 0;
JLS	0:2e86b4b28ea1	23
JLS	0:2e86b4b28ea1	24	float dt = 0.02;
JLS	0:2e86b4b28ea1	25
JLS	0:2e86b4b28ea1	26	float alpha = 15.6;
JLS	0:2e86b4b28ea1	27	float beta = 28.58;
JLS	0:2e86b4b28ea1	28	float a = -1.14286;
JLS	0:2e86b4b28ea1	29	float b = -0.714286;
JLS	0:2e86b4b28ea1	30	float h = 0;
JLS	0:2e86b4b28ea1	31
JLS	0:2e86b4b28ea1	32	int xout = 0;
JLS	0:2e86b4b28ea1	33	int yout = 0;
JLS	0:2e86b4b28ea1	34	int col = 0;
JLS	0:2e86b4b28ea1	35	int cnt = 0;
JLS	0:2e86b4b28ea1	36
JLS	0:2e86b4b28ea1	37	while (1) {
JLS	0:2e86b4b28ea1	38
JLS	0:2e86b4b28ea1	39	oldx = x;
JLS	0:2e86b4b28ea1	40	oldy = y;
JLS	0:2e86b4b28ea1	41	oldz = z;
JLS	0:2e86b4b28ea1	42
JLS	0:2e86b4b28ea1	43	h = (b * x) + (0.5 * (a - b) * (abs(x+1) - abs(x-1)));
JLS	0:2e86b4b28ea1	44
JLS	0:2e86b4b28ea1	45	x = oldx + dt * (alpha * (oldy - oldx - h));
JLS	0:2e86b4b28ea1	46	y = oldy + dt * (oldx - oldy + oldz);
JLS	0:2e86b4b28ea1	47	z = oldz + dt * (-beta * oldy);
JLS	0:2e86b4b28ea1	48
JLS	0:2e86b4b28ea1	49	xout = 320+(130*x);
JLS	0:2e86b4b28ea1	50	yout = 240+(430*y);
JLS	0:2e86b4b28ea1	51
JLS	0:2e86b4b28ea1	52	pixel(xout,yout,col);
JLS	0:2e86b4b28ea1	53
JLS	0:2e86b4b28ea1	54	cnt ++;
JLS	0:2e86b4b28ea1	55
JLS	0:2e86b4b28ea1	56	if (cnt == 100) {
JLS	0:2e86b4b28ea1	57
JLS	0:2e86b4b28ea1	58	col = rand();
JLS	0:2e86b4b28ea1	59
JLS	0:2e86b4b28ea1	60	cnt = 0;
JLS	0:2e86b4b28ea1	61
JLS	0:2e86b4b28ea1	62	}
JLS	0:2e86b4b28ea1	63
JLS	0:2e86b4b28ea1	64	}
JLS	0:2e86b4b28ea1	65	}
JLS	0:2e86b4b28ea1	66
JLS	0:2e86b4b28ea1	67
JLS	0:2e86b4b28ea1	68	void startVGA () {
JLS	0:2e86b4b28ea1	69
JLS	0:2e86b4b28ea1	70	_rst = 1;
JLS	0:2e86b4b28ea1	71	_rst = 0;
JLS	0:2e86b4b28ea1	72	wait_ms(1);
JLS	0:2e86b4b28ea1	73	_rst = 1;
JLS	0:2e86b4b28ea1	74	wait(3);
JLS	0:2e86b4b28ea1	75
JLS	0:2e86b4b28ea1	76	while (_cmd.readable()) _cmd.getc();
JLS	0:2e86b4b28ea1	77
JLS	0:2e86b4b28ea1	78	char autobaud[1] = "";
JLS	0:2e86b4b28ea1	79	autobaud[0] = '\x55';
JLS	0:2e86b4b28ea1	80	writeCOM(autobaud, 1);
JLS	0:2e86b4b28ea1	81
JLS	0:2e86b4b28ea1	82	baudrate();
JLS	0:2e86b4b28ea1	83
JLS	0:2e86b4b28ea1	84	cls();
JLS	0:2e86b4b28ea1	85
JLS	0:2e86b4b28ea1	86	char dispctr[3]= "";
JLS	0:2e86b4b28ea1	87	dispctr[0] = '\x59';
JLS	0:2e86b4b28ea1	88	dispctr[1] = 0x0c;
JLS	0:2e86b4b28ea1	89	dispctr[2] = 0x01;
JLS	0:2e86b4b28ea1	90	writeCOM(dispctr, 3);
JLS	0:2e86b4b28ea1	91
JLS	0:2e86b4b28ea1	92	}
JLS	0:2e86b4b28ea1	93
JLS	0:2e86b4b28ea1	94
JLS	0:2e86b4b28ea1	95	void pixel(int x, int y, int color) {
JLS	0:2e86b4b28ea1	96
JLS	0:2e86b4b28ea1	97	char pixel[7]= "";
JLS	0:2e86b4b28ea1	98
JLS	0:2e86b4b28ea1	99	pixel[0] = '\x50';
JLS	0:2e86b4b28ea1	100
JLS	0:2e86b4b28ea1	101	pixel[1] = (x >> 8) & 0xFF;
JLS	0:2e86b4b28ea1	102	pixel[2] = x & 0xFF;
JLS	0:2e86b4b28ea1	103
JLS	0:2e86b4b28ea1	104	pixel[3] = (y >> 8) & 0xFF;
JLS	0:2e86b4b28ea1	105	pixel[4] = y & 0xFF;
JLS	0:2e86b4b28ea1	106
JLS	0:2e86b4b28ea1	107	pixel[5] = (color >> 8) & 0xFF;
JLS	0:2e86b4b28ea1	108	pixel[6] = color & 0xFF;
JLS	0:2e86b4b28ea1	109
JLS	0:2e86b4b28ea1	110	writeCOM(pixel, 7);
JLS	0:2e86b4b28ea1	111	}
JLS	0:2e86b4b28ea1	112
JLS	0:2e86b4b28ea1	113
JLS	0:2e86b4b28ea1	114	void baudrate() {
JLS	0:2e86b4b28ea1	115
JLS	0:2e86b4b28ea1	116	char baudrate[2]= "";
JLS	0:2e86b4b28ea1	117
JLS	0:2e86b4b28ea1	118	baudrate[0] = '\x51';
JLS	0:2e86b4b28ea1	119	baudrate[1] = '\x0F';
JLS	0:2e86b4b28ea1	120
JLS	0:2e86b4b28ea1	121	int i, resp = 0;
JLS	0:2e86b4b28ea1	122
JLS	0:2e86b4b28ea1	123	while (_cmd.readable()) _cmd.getc();
JLS	0:2e86b4b28ea1	124
JLS	0:2e86b4b28ea1	125	long speed = speed = 281000;
JLS	0:2e86b4b28ea1	126
JLS	0:2e86b4b28ea1	127	for (i = 0; i <2; i++) _cmd.putc(baudrate[i]);
JLS	0:2e86b4b28ea1	128	_cmd.baud(speed);
JLS	0:2e86b4b28ea1	129
JLS	0:2e86b4b28ea1	130	while (!_cmd.readable()) wait_ms(1);
JLS	0:2e86b4b28ea1	131
JLS	0:2e86b4b28ea1	132	if (_cmd.readable()) resp = _cmd.getc();
JLS	0:2e86b4b28ea1	133	switch (resp) {
JLS	0:2e86b4b28ea1	134	case '\x06' :
JLS	0:2e86b4b28ea1	135	resp = 1;
JLS	0:2e86b4b28ea1	136	break;
JLS	0:2e86b4b28ea1	137	case '\x15' :
JLS	0:2e86b4b28ea1	138	resp = -1;
JLS	0:2e86b4b28ea1	139	break;
JLS	0:2e86b4b28ea1	140	default :
JLS	0:2e86b4b28ea1	141	resp = 0;
JLS	0:2e86b4b28ea1	142	break;
JLS	0:2e86b4b28ea1	143	}
JLS	0:2e86b4b28ea1	144
JLS	0:2e86b4b28ea1	145	}
JLS	0:2e86b4b28ea1	146
JLS	0:2e86b4b28ea1	147
JLS	0:2e86b4b28ea1	148	int writeCOM(char *command, int number) {
JLS	0:2e86b4b28ea1	149
JLS	0:2e86b4b28ea1	150	int i, resp = 0;
JLS	0:2e86b4b28ea1	151
JLS	0:2e86b4b28ea1	152	while (_cmd.readable()) _cmd.getc();
JLS	0:2e86b4b28ea1	153
JLS	0:2e86b4b28ea1	154	for (i = 0; i < number; i++) _cmd.putc(command[i]);
JLS	0:2e86b4b28ea1	155
JLS	0:2e86b4b28ea1	156	while (!_cmd.readable()) wait_ms(1);
JLS	0:2e86b4b28ea1	157	if (_cmd.readable()) resp = _cmd.getc();
JLS	0:2e86b4b28ea1	158	switch (resp) {
JLS	0:2e86b4b28ea1	159	case '\x06' :
JLS	0:2e86b4b28ea1	160	resp = 1;
JLS	0:2e86b4b28ea1	161	break;
JLS	0:2e86b4b28ea1	162	case '\x15' :
JLS	0:2e86b4b28ea1	163	resp = -1;
JLS	0:2e86b4b28ea1	164	break;
JLS	0:2e86b4b28ea1	165	default :
JLS	0:2e86b4b28ea1	166	resp = 0;
JLS	0:2e86b4b28ea1	167	break;
JLS	0:2e86b4b28ea1	168	}
JLS	0:2e86b4b28ea1	169
JLS	0:2e86b4b28ea1	170	return resp;
JLS	0:2e86b4b28ea1	171	}
JLS	0:2e86b4b28ea1	172
JLS	0:2e86b4b28ea1	173
JLS	0:2e86b4b28ea1	174	void cls() {
JLS	0:2e86b4b28ea1	175	char cls[1] = "";
JLS	0:2e86b4b28ea1	176	cls[0] = '\x45';
JLS	0:2e86b4b28ea1	177	writeCOM(cls, 1);
JLS	0:2e86b4b28ea1	178	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Sep 2011
Imports:	5
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

main.cpp@0:2e86b4b28ea1, 2011-09-03 (annotated)

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