DigiCam - This is an digital video camera program using NKK…

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Noriaki Mitsunaga / Mbed 2 deprecated DigiCam

This is an digital video camera program using NKK\'s oLED swtich and 4D Systems\' uCam serial camera. It takes image from the uCam and displays on the IS-C15 switch. Some image processing demos are included. This program uses FatFileSytem, SDFileSystem, and TextLCD library. See http://www.youtube.com/watch?v=fqHTaCRHyQs for how it works. CQ出版社の「mbed/ARM活用事例」第10章シリアル接続カメラと有機ELディスプレイ内蔵スイッチで作るmbedディジタル・カメラの作例です。動作の様子は http://www.youtube.com/watch?v=fqHTaCRHyQs で見れます。

Dependencies: TextLCD mbed SDFileSystem

ucam.cpp@2:0621feb3adf2, 2011-10-13 (annotated)

Committer:: non
Date:: Thu Oct 13 02:41:04 2011 +0000
Revision:: 2:0621feb3adf2
Parent:: 0:07d02a20d1cc

Who changed what in which revision?

User	Revision	Line number	New contents of line
non	0:07d02a20d1cc	1	/* 4D Systems uCam serial RAW/JPEG camera library
non	0:07d02a20d1cc	2	* Copyright (c) 2011, Noriaki Mitsunaga
non	0:07d02a20d1cc	3	*
non	0:07d02a20d1cc	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
non	0:07d02a20d1cc	5	* of this software and associated documentation files (the "Software"), to deal
non	0:07d02a20d1cc	6	* in the Software without restriction, including without limitation the rights
non	0:07d02a20d1cc	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
non	0:07d02a20d1cc	8	* copies of the Software, and to permit persons to whom the Software is
non	0:07d02a20d1cc	9	* furnished to do so, subject to the following conditions:
non	0:07d02a20d1cc	10	*
non	0:07d02a20d1cc	11	* The above copyright notice and this permission notice shall be included in
non	0:07d02a20d1cc	12	* all copies or substantial portions of the Software.
non	0:07d02a20d1cc	13	*
non	0:07d02a20d1cc	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
non	0:07d02a20d1cc	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
non	0:07d02a20d1cc	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
non	0:07d02a20d1cc	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
non	0:07d02a20d1cc	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
non	0:07d02a20d1cc	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
non	0:07d02a20d1cc	20	* THE SOFTWARE.
non	0:07d02a20d1cc	21	*/
non	0:07d02a20d1cc	22	#include "mbed.h"
non	0:07d02a20d1cc	23	#include "ucam.h"
non	0:07d02a20d1cc	24
non	0:07d02a20d1cc	25	// uCam-TTL commands:
non	0:07d02a20d1cc	26	const unsigned char ACK[] = {0xaa, 0x0e, 0x0d, 0, 0, 0};
non	0:07d02a20d1cc	27	const unsigned char ACK1[] = {0xaa, 0x0e, 0x0d, 0, 1, 0};
non	0:07d02a20d1cc	28	const unsigned char ACK_F0F0_[] = {0xaa, 0x0e, 0, 0, 0xf0, 0xf0};
non	0:07d02a20d1cc	29	const unsigned char GETPICTURE_SNAPSHOT[] = {0xaa, 0x04, 0x01, 0, 0, 0};
non	0:07d02a20d1cc	30	// const unsigned char GETPICTURE_RAWPREVIEW[] = {0xaa, 0x04, 0x02, 0, 0, 0};
non	0:07d02a20d1cc	31	const unsigned char RESET[] = {0xaa, 0x08, 0x01, 0x0, 0x0, 0xff};
non	0:07d02a20d1cc	32	const unsigned char SNAPSHOT_JPEG[] = {0xaa, 0x05, 0x00, 1, 0, 0};
non	0:07d02a20d1cc	33	const unsigned char SNAPSHOT_RAW[] = {0xaa, 0x05, 0x01, 1, 0, 0};
non	0:07d02a20d1cc	34	const unsigned char SYNC[] = {0xaa, 0x0d, 0, 0, 0, 0};
non	0:07d02a20d1cc	35
non	0:07d02a20d1cc	36	// Send special ACK
non	0:07d02a20d1cc	37	void uCam::ACK_F0F0() {
non	0:07d02a20d1cc	38	write(ACK_F0F0_, sizeof(ACK_F0F0_));
non	0:07d02a20d1cc	39	}
non	0:07d02a20d1cc	40
non	0:07d02a20d1cc	41	// Check if buf is valid ACK.
non	0:07d02a20d1cc	42	int uCam::checkACK(const unsigned char *buf) {
non	0:07d02a20d1cc	43	if (buf[0] == ACK[0] && buf[1] == ACK[1] && buf[2] == ACK[2]
non	0:07d02a20d1cc	44	&& buf[4] == 0 && buf[5] == 0)
non	0:07d02a20d1cc	45	return 1;
non	0:07d02a20d1cc	46
non	0:07d02a20d1cc	47	return 0;
non	0:07d02a20d1cc	48	}
non	0:07d02a20d1cc	49
non	0:07d02a20d1cc	50	// Compare buf to SYNC
non	0:07d02a20d1cc	51	int uCam::checkSYNC(const unsigned char *buf) {
non	0:07d02a20d1cc	52	if (memcmp(buf, SYNC, sizeof(SYNC)) == 0)
non	0:07d02a20d1cc	53	return 1;
non	0:07d02a20d1cc	54
non	0:07d02a20d1cc	55	return 0;
non	0:07d02a20d1cc	56	}
non	0:07d02a20d1cc	57
non	0:07d02a20d1cc	58	// Send a command to uCam via the serial
non	0:07d02a20d1cc	59	int uCam::Command(const unsigned char *cmd) {
non	0:07d02a20d1cc	60	// Send the command
non	0:07d02a20d1cc	61	write(cmd, 6);
non	0:07d02a20d1cc	62
non	0:07d02a20d1cc	63	// Wait for response
non	0:07d02a20d1cc	64	unsigned char buf[6];
non	0:07d02a20d1cc	65	read(buf, 6);
non	0:07d02a20d1cc	66
non	0:07d02a20d1cc	67	// Check ACK
non	0:07d02a20d1cc	68	if (buf[0] == 0xaa && buf[1] == 0x0e
non	0:07d02a20d1cc	69	&& buf[2] == cmd[1]
non	0:07d02a20d1cc	70	/* ignore fourth byte */
non	0:07d02a20d1cc	71	&& buf[4] == 0 && buf[5] == 0)
non	0:07d02a20d1cc	72	return 1;
non	0:07d02a20d1cc	73
non	0:07d02a20d1cc	74	return 0;
non	0:07d02a20d1cc	75	}
non	0:07d02a20d1cc	76
non	0:07d02a20d1cc	77	// Initialize communcation to uCam
non	0:07d02a20d1cc	78	int uCam::Init() {
non	0:07d02a20d1cc	79	int i;
non	0:07d02a20d1cc	80	unsigned char buf[12];
non	0:07d02a20d1cc	81
non	0:07d02a20d1cc	82	for (i=0; i<60; i ++) {
non	0:07d02a20d1cc	83	// Send SYNC and check the answer
non	0:07d02a20d1cc	84	write(SYNC, sizeof(SYNC));
non	0:07d02a20d1cc	85	if (readT(buf, sizeof(buf)) == 12 && checkACK(buf)) {
non	0:07d02a20d1cc	86	break;
non	0:07d02a20d1cc	87	}
non	0:07d02a20d1cc	88	}
non	0:07d02a20d1cc	89	if (i == 60) // Too many retries
non	0:07d02a20d1cc	90	return 0;
non	0:07d02a20d1cc	91
non	0:07d02a20d1cc	92	// Check SYNC
non	0:07d02a20d1cc	93	if (!checkSYNC(buf+6)) {
non	0:07d02a20d1cc	94	return 0;
non	0:07d02a20d1cc	95	}
non	0:07d02a20d1cc	96	write(ACK, sizeof(ACK));
non	0:07d02a20d1cc	97	return 1;
non	0:07d02a20d1cc	98	}
non	0:07d02a20d1cc	99
non	0:07d02a20d1cc	100	// Set light frequencey (50Hz or 60Hz) to reduce flicker.
non	0:07d02a20d1cc	101	int uCam::LightFreq(int f) {
non	0:07d02a20d1cc	102	unsigned char LIGHT[] = {0xaa, 0x13, 0, 0, 0, 0};
non	0:07d02a20d1cc	103
non	0:07d02a20d1cc	104	if (f == 50)
non	0:07d02a20d1cc	105	LIGHT[2] = 0x0;
non	0:07d02a20d1cc	106	else if (f == 60)
non	0:07d02a20d1cc	107	LIGHT[2] = 0x1;
non	0:07d02a20d1cc	108	else
non	0:07d02a20d1cc	109	return 0;
non	0:07d02a20d1cc	110
non	0:07d02a20d1cc	111	return Command(LIGHT);
non	0:07d02a20d1cc	112	}
non	0:07d02a20d1cc	113
non	0:07d02a20d1cc	114	// Recive data from serial. It blocks until it recieves len bytes.
non	0:07d02a20d1cc	115	// buf: recieving buffer
non	0:07d02a20d1cc	116	// len: length to recieve
non	0:07d02a20d1cc	117	void uCam::read(unsigned char *p, int len) {
non	0:07d02a20d1cc	118	for (; len>0; len--, p++) {
non	0:07d02a20d1cc	119	*p = s->getc();
non	0:07d02a20d1cc	120	}
non	0:07d02a20d1cc	121	}
non	0:07d02a20d1cc	122
non	0:07d02a20d1cc	123	// Recive data from serial with timeout
non	0:07d02a20d1cc	124	// buf: recieving buffer
non	0:07d02a20d1cc	125	// len: length of the buffer
non	0:07d02a20d1cc	126	int uCam::readT(unsigned char *buf, int len) {
non	0:07d02a20d1cc	127	int c = 0;
non	0:07d02a20d1cc	128	unsigned char *q = buf;
non	0:07d02a20d1cc	129
non	0:07d02a20d1cc	130	for (int j=0; j<2000; j ++) {
non	0:07d02a20d1cc	131	if (s->readable()) {
non	0:07d02a20d1cc	132	*q = s->getc();
non	0:07d02a20d1cc	133	if (c < len) {
non	0:07d02a20d1cc	134	q ++;
non	0:07d02a20d1cc	135	c ++;
non	0:07d02a20d1cc	136	}
non	0:07d02a20d1cc	137	}
non	0:07d02a20d1cc	138	wait_us(50);
non	0:07d02a20d1cc	139	}
non	0:07d02a20d1cc	140
non	0:07d02a20d1cc	141	return c;
non	0:07d02a20d1cc	142	}
non	0:07d02a20d1cc	143
non	0:07d02a20d1cc	144	// Reset uCam
non	0:07d02a20d1cc	145	void uCam::Reset() {
non	0:07d02a20d1cc	146	Command(RESET);
non	0:07d02a20d1cc	147	}
non	0:07d02a20d1cc	148
non	0:07d02a20d1cc	149	// Recieve a JPEG image packet. You need to call SnapshotJPEGi() before.
non	0:07d02a20d1cc	150	// no: packet number (starts from 0)
non	0:07d02a20d1cc	151	// buf: recieving buffer
non	0:07d02a20d1cc	152	// pksz: packet size to recieve
non	0:07d02a20d1cc	153	int uCam::SnapshotJPEGd(int no, unsigned char *buf, int pksz) {
non	0:07d02a20d1cc	154	unsigned char ACK_[] = {0xaa, 0x0e, 0x00, 0, 0, 0};
non	0:07d02a20d1cc	155
non	0:07d02a20d1cc	156	ACK_[4] = no & 0xff;
non	0:07d02a20d1cc	157	ACK_[5] = (no >> 8) & 0xff;
non	0:07d02a20d1cc	158
non	0:07d02a20d1cc	159	write(ACK_, sizeof(ACK_));
non	0:07d02a20d1cc	160	read(buf, pksz);
non	0:07d02a20d1cc	161
non	0:07d02a20d1cc	162	return 1;
non	0:07d02a20d1cc	163	}
non	0:07d02a20d1cc	164
non	0:07d02a20d1cc	165	// Prepare to recieve a JPEG image.
non	0:07d02a20d1cc	166	// Res: resolution of the image (did not work well for 640x480 with uCam-TTL(ov528 version))
non	0:07d02a20d1cc	167	// pksz: packet size to recieve
non	0:07d02a20d1cc	168	int uCam::SnapshotJPEGi(int Res, int pksz) {
non	0:07d02a20d1cc	169	unsigned char INITIAL[] = {0xaa, 0x01, 0x00, 0x07, 0x01, 0x00};
non	0:07d02a20d1cc	170	unsigned char SET_PACKAGESIZE[] = {0xaa, 0x06, 0x08, 0x00, 0x00, 0x00};
non	0:07d02a20d1cc	171	unsigned char buf[6];
non	0:07d02a20d1cc	172
non	0:07d02a20d1cc	173	INITIAL[5] = Res;
non	0:07d02a20d1cc	174	SET_PACKAGESIZE[3] = pksz & 0xff;
non	0:07d02a20d1cc	175	SET_PACKAGESIZE[4] = (pksz >> 8) & 0xff;
non	0:07d02a20d1cc	176
non	0:07d02a20d1cc	177	if (!Command(INITIAL))
non	0:07d02a20d1cc	178	return 0;
non	0:07d02a20d1cc	179	if (!Command(SET_PACKAGESIZE))
non	0:07d02a20d1cc	180	return 0;
non	0:07d02a20d1cc	181	if (!Command(SNAPSHOT_JPEG))
non	0:07d02a20d1cc	182	return 0;
non	0:07d02a20d1cc	183	if (!Command(GETPICTURE_SNAPSHOT))
non	0:07d02a20d1cc	184	return 0;
non	0:07d02a20d1cc	185
non	0:07d02a20d1cc	186	read(buf, 6);
non	0:07d02a20d1cc	187	if (!(buf[0] == 0xaa && buf[1] == 0x0a && buf[2] == 0x01))
non	0:07d02a20d1cc	188	return 0;
non	0:07d02a20d1cc	189
non	0:07d02a20d1cc	190	return buf[5]<<16 \| buf[4]<<8 \| buf[3]; // return file size
non	0:07d02a20d1cc	191	}
non	0:07d02a20d1cc	192
non	0:07d02a20d1cc	193	// Take a raw image.
non	0:07d02a20d1cc	194	//
non	0:07d02a20d1cc	195	// Color: color mode (supporte form 8bit gray, RGB232, or RGB565 only)
non	0:07d02a20d1cc	196	// Res: image resolution
non	0:07d02a20d1cc	197	// buf: buffer to save the image
non	0:07d02a20d1cc	198	int uCam::SnapshotRaw(int Color, int Res, unsigned char *buf) {
non	0:07d02a20d1cc	199	unsigned char INITIAL[] = {0xaa, 0x01, 0x00, 0x00, 0x00, 0x07};
non	0:07d02a20d1cc	200
non	0:07d02a20d1cc	201	INITIAL[3] = Color;
non	0:07d02a20d1cc	202	INITIAL[4] = Res;
non	0:07d02a20d1cc	203
non	0:07d02a20d1cc	204	if (!Command(INITIAL))
non	0:07d02a20d1cc	205	return 0;
non	0:07d02a20d1cc	206	if (!Command(SNAPSHOT_RAW))
non	0:07d02a20d1cc	207	return 0;
non	0:07d02a20d1cc	208	if (!Command(GETPICTURE_SNAPSHOT))
non	0:07d02a20d1cc	209	return 0;
non	0:07d02a20d1cc	210
non	0:07d02a20d1cc	211	read(buf, 6);
non	0:07d02a20d1cc	212	if (!(buf[0] == 0xaa && buf[1] == 0x0a && buf[2] == 0x01))
non	0:07d02a20d1cc	213	return 0;
non	0:07d02a20d1cc	214
non	0:07d02a20d1cc	215	// lcd.printf("%d\n", buf[3] + buf[4]<<8 + buf[5]<<16);
non	0:07d02a20d1cc	216	read(buf, buf[5]<<16 \| buf[4]<<8 \| buf[3] /* 80602*/ );
non	0:07d02a20d1cc	217	write(ACK1, sizeof(ACK1));
non	0:07d02a20d1cc	218
non	0:07d02a20d1cc	219	return 1;
non	0:07d02a20d1cc	220	}
non	0:07d02a20d1cc	221
non	0:07d02a20d1cc	222	// Take a raw image. This function crops
non	0:07d02a20d1cc	223	// the image while it is recieving data from uCam
non	0:07d02a20d1cc	224	//
non	0:07d02a20d1cc	225	// Color: color mode (supporte form 8bit gray, RGB232, or RGB565 only)
non	0:07d02a20d1cc	226	// Res: image resolution
non	0:07d02a20d1cc	227	// x0, y0: top left corner of the cropping area
non	0:07d02a20d1cc	228	// w, h: width and height of cropping area
non	0:07d02a20d1cc	229	// buf: buffer to save the image
non	0:07d02a20d1cc	230	int uCam::SnapshotRawCrop(int Color, int Res,
non	0:07d02a20d1cc	231	int x0, int y0, int w, int h,
non	0:07d02a20d1cc	232	unsigned char *buf) {
non	0:07d02a20d1cc	233	unsigned char INITIAL[] = {0xaa, 0x01, 0x00, 0x00, 0x00, 0x07};
non	0:07d02a20d1cc	234	int W = ucam_raw_resolution_w[(Res-1)/2];
non	0:07d02a20d1cc	235	int H = ucam_raw_resolution_h[(Res-1)/2];
non	0:07d02a20d1cc	236
non	0:07d02a20d1cc	237	if (Color == UCAM_COLOR_TYPE_RGB565) {
non	0:07d02a20d1cc	238	W *= 2;
non	0:07d02a20d1cc	239	x0 *= 2;
non	0:07d02a20d1cc	240	w *= 2;
non	0:07d02a20d1cc	241	}
non	0:07d02a20d1cc	242
non	0:07d02a20d1cc	243	INITIAL[3] = Color;
non	0:07d02a20d1cc	244	INITIAL[4] = Res;
non	0:07d02a20d1cc	245
non	0:07d02a20d1cc	246	if (!Command(INITIAL))
non	0:07d02a20d1cc	247	return 0;
non	0:07d02a20d1cc	248	if (!Command(SNAPSHOT_RAW))
non	0:07d02a20d1cc	249	return 0;
non	0:07d02a20d1cc	250	if (!Command(GETPICTURE_SNAPSHOT))
non	0:07d02a20d1cc	251	return 0;
non	0:07d02a20d1cc	252
non	0:07d02a20d1cc	253	read(buf, 6);
non	0:07d02a20d1cc	254	if (!(buf[0] == 0xaa && buf[1] == 0x0a && buf[2] == 0x01))
non	0:07d02a20d1cc	255	return 0;
non	0:07d02a20d1cc	256
non	0:07d02a20d1cc	257	for (int i=y0W; i>0; i--) / Skip */
non	0:07d02a20d1cc	258	s->getc();
non	0:07d02a20d1cc	259
non	0:07d02a20d1cc	260	for (int i=h; i>0; i--) {
non	0:07d02a20d1cc	261	for (int j=x0; j>0; j--) /* Skip */
non	0:07d02a20d1cc	262	s->getc();
non	0:07d02a20d1cc	263	read(buf, w);
non	0:07d02a20d1cc	264	buf += w;
non	0:07d02a20d1cc	265	for (int j=W-w-x0; j>0; j--) /* Skip */
non	0:07d02a20d1cc	266	s->getc();
non	0:07d02a20d1cc	267	}
non	0:07d02a20d1cc	268	for (int i=(H-y0-h)W; i>0; i--) / Skip */
non	0:07d02a20d1cc	269	s->getc();
non	0:07d02a20d1cc	270	write(ACK1, sizeof(ACK1));
non	0:07d02a20d1cc	271
non	0:07d02a20d1cc	272	return 1;
non	0:07d02a20d1cc	273	}
non	0:07d02a20d1cc	274
non	0:07d02a20d1cc	275	// Write <len> characters from p to the serial
non	0:07d02a20d1cc	276	void uCam::write(const unsigned char *p, int len) {
non	0:07d02a20d1cc	277	for (; len>0; len--, p++) {
non	0:07d02a20d1cc	278	s->putc(*p);
non	0:07d02a20d1cc	279	}
non	0:07d02a20d1cc	280	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	06 Oct 2011
Imports:	51
Forks:	0
Commits:	3
Dependents:	0
Dependencies:	3
Followers:	3

ucam.cpp@2:0621feb3adf2, 2011-10-13 (annotated)

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