Diff: main.cpp

Revision:

0:5536e07364a7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Oct 13 20:44:31 2011 +0000
@@ -0,0 +1,174 @@
+#include "mbed.h"
+#include "EthernetNetIf.h"
+#include "HTTPClient.h"
+#include "ID12RFID.h"
+#include "Camera_LS_Y201.h"
+#include "SDFileSystem.h"
+
+#define DEBMSG      printf
+#define NEWLINE()   printf("\r\n")
+
+#define FILENAME    "/local/%08d.jpg"
+LocalFileSystem fs("local");
+Camera_LS_Y201 cam1(p9, p10);
+
+typedef struct work {
+    FILE *fp;
+} work_t;
+work_t work;
+
+ID12RFID rfid(p14); // uart rx
+EthernetNetIf eth;
+HTTPClient http;
+DigitalOut myled(LED1);
+DigitalOut myled2(p20);
+DigitalOut door(p21);
+int tagNum;
+
+bool CheckTag(int tag){
+    HTTPText txt;
+    const char * txtBuffer;
+    char* bufferCopy;
+    char* line;
+    
+    // retrieve authorized tag numbers, CSV format
+    HTTPResult r = http.get("http://www.prism.gatech.edu/~dburnham6/tags.txt", &txt);
+    if(r==HTTP_OK){
+        txtBuffer = txt.gets();
+        bufferCopy = const_cast<char *> (txtBuffer); // allow parsing of the text
+        line = strtok(bufferCopy, ","); // separate by commas
+        while (line != NULL) {
+            if(atoi(line) == tag) {
+                return true;
+            }
+            line = strtok(NULL, ",");
+        }
+        
+        printf("Tag Not Found.\r\n"); 
+    }
+    else
+    {
+        printf("HTTP Error %d\n", r);
+    }
+    return false;
+}
+
+/** [from the Camera_LS_Y201 test code]
+ * Callback function for readJpegFileContent.
+ *
+ * @param buf A pointer to a buffer.
+ * @param siz A size of the buffer.
+ */
+void callback_func(int done, int total, uint8_t *buf, size_t siz) {
+    fwrite(buf, siz, 1, work.fp);
+
+    static int n = 0;
+    int tmp = done * 100 / total;
+    if (n != tmp) {
+        n = tmp;
+        DEBMSG("Writing...: %3d%%", n);
+        NEWLINE();
+    }
+}
+
+/** [from the Camera_LS_Y201 test code]
+ * Capture.
+ *
+ * @param cam A pointer to a camera object.
+ * @param filename The file name.
+ *
+ * @return Return 0 if it succeed.
+ */
+int capture(Camera_LS_Y201 *cam, char *filename) {
+    /*
+     * Take a picture.
+     */
+    if (cam->takePicture() != 0) {
+        return -1;
+    }
+    DEBMSG("Captured.");
+    NEWLINE();
+
+    /*
+     * Open file.
+     */
+    work.fp = fopen(filename, "wb");
+    if (work.fp == NULL) {
+        return -2;
+    }
+
+    /*
+     * Read the content.
+     */
+    DEBMSG("%s", filename);
+    NEWLINE();
+    if (cam->readJpegFileContent(callback_func) != 0) {
+        fclose(work.fp);
+        return -3;
+    }
+    fclose(work.fp);
+
+    /*
+     * Stop taking pictures.
+     */
+    cam->stopTakingPictures();
+
+    return 0;
+}
+
+int main() {
+    // init ethernet
+    EthernetErr ethErr = eth.setup();
+    if(ethErr)
+    {
+        printf("Error %d in setup.\n", ethErr);
+    }
+    printf("Setup OK\n");
+    
+    // init camera
+    DEBMSG("Camera module");
+    NEWLINE();
+    DEBMSG("Resetting...");
+    NEWLINE();
+    wait(1);
+    if (cam1.reset() == 0) {
+        DEBMSG("Reset OK.");
+        NEWLINE();
+    } else {
+        DEBMSG("Reset fail.");
+        NEWLINE();
+        error("Reset fail.");
+    }
+    wait(1);
+    
+    // wait for tag
+    while(1) {
+        if(rfid.readable()) {
+            int tag = rfid.read();
+            printf("RFID Tag number : %d\r\n", tag);
+            if(CheckTag(tag)) {
+                printf("Authorized user confirmed. Unlocking door...\r\n");
+                door = 1;
+                myled = 1;
+                wait(10);
+                door = 0;
+                myled = 0;
+            } else {
+                printf("Unauthorized access tag. Picture for evidence... \r\n");
+                myled2 = 1;
+                char fname[64];
+                snprintf(fname, sizeof(fname) - 1, FILENAME, tag);
+                int r = capture(&cam1, fname); // take a picture
+                if (r == 0) {
+                    DEBMSG("[%04d]:OK.", tag);
+                    NEWLINE();
+                } else {
+                    DEBMSG("[%04d]:NG. (code=%d)", tag, r);
+                    NEWLINE();
+                    error("Picture failed.");
+                }
+                myled2 = 0;
+            }
+        }
+    }
+}