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
Who changed what in which revision?
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 | } |