RFIDdoor - RFID door access with security camera

Users » dburnham6 » Code » RFIDdoor

Daniel Burnham / Mbed 2 deprecated RFIDdoor

RFID door access with security camera

Dependencies: EthernetNetIf mbed Camera_LS_Y201 ID12RFID SDFileSystem

main.cpp@0:5536e07364a7, 2011-10-13 (annotated)

Committer:: dburnham6
Date:: Thu Oct 13 20:44:31 2011 +0000
Revision:: 0:5536e07364a7

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User	Revision	Line number	New contents of line
dburnham6	0:5536e07364a7	1	#include "mbed.h"
dburnham6	0:5536e07364a7	2	#include "EthernetNetIf.h"
dburnham6	0:5536e07364a7	3	#include "HTTPClient.h"
dburnham6	0:5536e07364a7	4	#include "ID12RFID.h"
dburnham6	0:5536e07364a7	5	#include "Camera_LS_Y201.h"
dburnham6	0:5536e07364a7	6	#include "SDFileSystem.h"
dburnham6	0:5536e07364a7	7
dburnham6	0:5536e07364a7	8	#define DEBMSG printf
dburnham6	0:5536e07364a7	9	#define NEWLINE() printf("\r\n")
dburnham6	0:5536e07364a7	10
dburnham6	0:5536e07364a7	11	#define FILENAME "/local/%08d.jpg"
dburnham6	0:5536e07364a7	12	LocalFileSystem fs("local");
dburnham6	0:5536e07364a7	13	Camera_LS_Y201 cam1(p9, p10);
dburnham6	0:5536e07364a7	14
dburnham6	0:5536e07364a7	15	typedef struct work {
dburnham6	0:5536e07364a7	16	FILE *fp;
dburnham6	0:5536e07364a7	17	} work_t;
dburnham6	0:5536e07364a7	18	work_t work;
dburnham6	0:5536e07364a7	19
dburnham6	0:5536e07364a7	20	ID12RFID rfid(p14); // uart rx
dburnham6	0:5536e07364a7	21	EthernetNetIf eth;
dburnham6	0:5536e07364a7	22	HTTPClient http;
dburnham6	0:5536e07364a7	23	DigitalOut myled(LED1);
dburnham6	0:5536e07364a7	24	DigitalOut myled2(p20);
dburnham6	0:5536e07364a7	25	DigitalOut door(p21);
dburnham6	0:5536e07364a7	26	int tagNum;
dburnham6	0:5536e07364a7	27
dburnham6	0:5536e07364a7	28	bool CheckTag(int tag){
dburnham6	0:5536e07364a7	29	HTTPText txt;
dburnham6	0:5536e07364a7	30	const char * txtBuffer;
dburnham6	0:5536e07364a7	31	char* bufferCopy;
dburnham6	0:5536e07364a7	32	char* line;
dburnham6	0:5536e07364a7	33
dburnham6	0:5536e07364a7	34	// retrieve authorized tag numbers, CSV format
dburnham6	0:5536e07364a7	35	HTTPResult r = http.get("http://www.prism.gatech.edu/~dburnham6/tags.txt", &txt);
dburnham6	0:5536e07364a7	36	if(r==HTTP_OK){
dburnham6	0:5536e07364a7	37	txtBuffer = txt.gets();
dburnham6	0:5536e07364a7	38	bufferCopy = const_cast<char *> (txtBuffer); // allow parsing of the text
dburnham6	0:5536e07364a7	39	line = strtok(bufferCopy, ","); // separate by commas
dburnham6	0:5536e07364a7	40	while (line != NULL) {
dburnham6	0:5536e07364a7	41	if(atoi(line) == tag) {
dburnham6	0:5536e07364a7	42	return true;
dburnham6	0:5536e07364a7	43	}
dburnham6	0:5536e07364a7	44	line = strtok(NULL, ",");
dburnham6	0:5536e07364a7	45	}
dburnham6	0:5536e07364a7	46
dburnham6	0:5536e07364a7	47	printf("Tag Not Found.\r\n");
dburnham6	0:5536e07364a7	48	}
dburnham6	0:5536e07364a7	49	else
dburnham6	0:5536e07364a7	50	{
dburnham6	0:5536e07364a7	51	printf("HTTP Error %d\n", r);
dburnham6	0:5536e07364a7	52	}
dburnham6	0:5536e07364a7	53	return false;
dburnham6	0:5536e07364a7	54	}
dburnham6	0:5536e07364a7	55
dburnham6	0:5536e07364a7	56	/** [from the Camera_LS_Y201 test code]
dburnham6	0:5536e07364a7	57	* Callback function for readJpegFileContent.
dburnham6	0:5536e07364a7	58	*
dburnham6	0:5536e07364a7	59	* @param buf A pointer to a buffer.
dburnham6	0:5536e07364a7	60	* @param siz A size of the buffer.
dburnham6	0:5536e07364a7	61	*/
dburnham6	0:5536e07364a7	62	void callback_func(int done, int total, uint8_t *buf, size_t siz) {
dburnham6	0:5536e07364a7	63	fwrite(buf, siz, 1, work.fp);
dburnham6	0:5536e07364a7	64
dburnham6	0:5536e07364a7	65	static int n = 0;
dburnham6	0:5536e07364a7	66	int tmp = done * 100 / total;
dburnham6	0:5536e07364a7	67	if (n != tmp) {
dburnham6	0:5536e07364a7	68	n = tmp;
dburnham6	0:5536e07364a7	69	DEBMSG("Writing...: %3d%%", n);
dburnham6	0:5536e07364a7	70	NEWLINE();
dburnham6	0:5536e07364a7	71	}
dburnham6	0:5536e07364a7	72	}
dburnham6	0:5536e07364a7	73
dburnham6	0:5536e07364a7	74	/** [from the Camera_LS_Y201 test code]
dburnham6	0:5536e07364a7	75	* Capture.
dburnham6	0:5536e07364a7	76	*
dburnham6	0:5536e07364a7	77	* @param cam A pointer to a camera object.
dburnham6	0:5536e07364a7	78	* @param filename The file name.
dburnham6	0:5536e07364a7	79	*
dburnham6	0:5536e07364a7	80	* @return Return 0 if it succeed.
dburnham6	0:5536e07364a7	81	*/
dburnham6	0:5536e07364a7	82	int capture(Camera_LS_Y201 cam, char filename) {
dburnham6	0:5536e07364a7	83	/*
dburnham6	0:5536e07364a7	84	* Take a picture.
dburnham6	0:5536e07364a7	85	*/
dburnham6	0:5536e07364a7	86	if (cam->takePicture() != 0) {
dburnham6	0:5536e07364a7	87	return -1;
dburnham6	0:5536e07364a7	88	}
dburnham6	0:5536e07364a7	89	DEBMSG("Captured.");
dburnham6	0:5536e07364a7	90	NEWLINE();
dburnham6	0:5536e07364a7	91
dburnham6	0:5536e07364a7	92	/*
dburnham6	0:5536e07364a7	93	* Open file.
dburnham6	0:5536e07364a7	94	*/
dburnham6	0:5536e07364a7	95	work.fp = fopen(filename, "wb");
dburnham6	0:5536e07364a7	96	if (work.fp == NULL) {
dburnham6	0:5536e07364a7	97	return -2;
dburnham6	0:5536e07364a7	98	}
dburnham6	0:5536e07364a7	99
dburnham6	0:5536e07364a7	100	/*
dburnham6	0:5536e07364a7	101	* Read the content.
dburnham6	0:5536e07364a7	102	*/
dburnham6	0:5536e07364a7	103	DEBMSG("%s", filename);
dburnham6	0:5536e07364a7	104	NEWLINE();
dburnham6	0:5536e07364a7	105	if (cam->readJpegFileContent(callback_func) != 0) {
dburnham6	0:5536e07364a7	106	fclose(work.fp);
dburnham6	0:5536e07364a7	107	return -3;
dburnham6	0:5536e07364a7	108	}
dburnham6	0:5536e07364a7	109	fclose(work.fp);
dburnham6	0:5536e07364a7	110
dburnham6	0:5536e07364a7	111	/*
dburnham6	0:5536e07364a7	112	* Stop taking pictures.
dburnham6	0:5536e07364a7	113	*/
dburnham6	0:5536e07364a7	114	cam->stopTakingPictures();
dburnham6	0:5536e07364a7	115
dburnham6	0:5536e07364a7	116	return 0;
dburnham6	0:5536e07364a7	117	}
dburnham6	0:5536e07364a7	118
dburnham6	0:5536e07364a7	119	int main() {
dburnham6	0:5536e07364a7	120	// init ethernet
dburnham6	0:5536e07364a7	121	EthernetErr ethErr = eth.setup();
dburnham6	0:5536e07364a7	122	if(ethErr)
dburnham6	0:5536e07364a7	123	{
dburnham6	0:5536e07364a7	124	printf("Error %d in setup.\n", ethErr);
dburnham6	0:5536e07364a7	125	}
dburnham6	0:5536e07364a7	126	printf("Setup OK\n");
dburnham6	0:5536e07364a7	127
dburnham6	0:5536e07364a7	128	// init camera
dburnham6	0:5536e07364a7	129	DEBMSG("Camera module");
dburnham6	0:5536e07364a7	130	NEWLINE();
dburnham6	0:5536e07364a7	131	DEBMSG("Resetting...");
dburnham6	0:5536e07364a7	132	NEWLINE();
dburnham6	0:5536e07364a7	133	wait(1);
dburnham6	0:5536e07364a7	134	if (cam1.reset() == 0) {
dburnham6	0:5536e07364a7	135	DEBMSG("Reset OK.");
dburnham6	0:5536e07364a7	136	NEWLINE();
dburnham6	0:5536e07364a7	137	} else {
dburnham6	0:5536e07364a7	138	DEBMSG("Reset fail.");
dburnham6	0:5536e07364a7	139	NEWLINE();
dburnham6	0:5536e07364a7	140	error("Reset fail.");
dburnham6	0:5536e07364a7	141	}
dburnham6	0:5536e07364a7	142	wait(1);
dburnham6	0:5536e07364a7	143
dburnham6	0:5536e07364a7	144	// wait for tag
dburnham6	0:5536e07364a7	145	while(1) {
dburnham6	0:5536e07364a7	146	if(rfid.readable()) {
dburnham6	0:5536e07364a7	147	int tag = rfid.read();
dburnham6	0:5536e07364a7	148	printf("RFID Tag number : %d\r\n", tag);
dburnham6	0:5536e07364a7	149	if(CheckTag(tag)) {
dburnham6	0:5536e07364a7	150	printf("Authorized user confirmed. Unlocking door...\r\n");
dburnham6	0:5536e07364a7	151	door = 1;
dburnham6	0:5536e07364a7	152	myled = 1;
dburnham6	0:5536e07364a7	153	wait(10);
dburnham6	0:5536e07364a7	154	door = 0;
dburnham6	0:5536e07364a7	155	myled = 0;
dburnham6	0:5536e07364a7	156	} else {
dburnham6	0:5536e07364a7	157	printf("Unauthorized access tag. Picture for evidence... \r\n");
dburnham6	0:5536e07364a7	158	myled2 = 1;
dburnham6	0:5536e07364a7	159	char fname[64];
dburnham6	0:5536e07364a7	160	snprintf(fname, sizeof(fname) - 1, FILENAME, tag);
dburnham6	0:5536e07364a7	161	int r = capture(&cam1, fname); // take a picture
dburnham6	0:5536e07364a7	162	if (r == 0) {
dburnham6	0:5536e07364a7	163	DEBMSG("[%04d]:OK.", tag);
dburnham6	0:5536e07364a7	164	NEWLINE();
dburnham6	0:5536e07364a7	165	} else {
dburnham6	0:5536e07364a7	166	DEBMSG("[%04d]:NG. (code=%d)", tag, r);
dburnham6	0:5536e07364a7	167	NEWLINE();
dburnham6	0:5536e07364a7	168	error("Picture failed.");
dburnham6	0:5536e07364a7	169	}
dburnham6	0:5536e07364a7	170	myled2 = 0;
dburnham6	0:5536e07364a7	171	}
dburnham6	0:5536e07364a7	172	}
dburnham6	0:5536e07364a7	173	}
dburnham6	0:5536e07364a7	174	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	13 Oct 2011
Imports:	144
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	6
Followers:	6

main.cpp@0:5536e07364a7, 2011-10-13 (annotated)

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