main.cpp

00001 /*
00002  * see: http://mbed.org/users/okini3939/notebook/wifi_webcam/
00003  *
00004  * using: http://mbed.org/users/va009039/code/USBHostC270_example/
00005  * using: http://mbed.org/users/gsfan/code/GSwifiInterface/
00006  */
00007 
00008 #include "mbed.h"
00009 #include "GSwifiInterface.h"
00010 #include "USBHostC270.h"
00011 
00012 #define SEC  GSwifi::SEC_OPEN
00013 #define SSID "MBED"
00014 #define PASS "1234567890"
00015 #define MODE GSwifi::WM_LIMITEDAP
00016 
00017 DigitalOut led1(LED1), led2(LED2), led3(LED3);
00018 Serial pc(USBTX, USBRX);
00019 LocalFileSystem local("local");
00020 GSwifiInterface *gs;
00021 
00022 int main() {
00023     Timer t;
00024 
00025     pc.baud(115200);
00026     pc.printf("GSwifi_ap_webcam\r\n");
00027 
00028     gs = new GSwifiInterface(p13, p14, p12, P0_22, p20, NC, 115200);
00029     wait_ms(300);
00030 //    gs->init(); //Use DHCP
00031     gs->init("192.168.1.1", "255.255.255.0", "192.168.1.1", "192.168.1.1", "www.mbed");
00032     if (gs->connect(SEC, SSID, PASS, MODE)) return -1; // join the network
00033     NVIC_SetPriority(UART1_IRQn, 1);
00034     printf("IP Address is %s\r\n", gs->getIPAddress());
00035 
00036     gs->httpd();
00037     gs->httpdAttach("/", "/local/");
00038 
00039     USBHostC270* cam = new USBHostC270(C270_MJPEG, C270_160x120, _10FPS); // Logitech C270
00040 //    USBHostC270* cam = new USBHostC270(C270_MJPEG, C270_320x240, _5FPS); // Logitech C270
00041 
00042     t.start();
00043     led1 = 1;
00044     for (;;) {
00045         gs->poll();
00046 
00047         if (!cam->connected()) {
00048             led2 = 1;
00049             if (t.read() > 0.5) {
00050                 cam->connect();
00051                 if (cam->connected()) printf("webcam has detected\r\n");
00052                 t.reset();
00053             }
00054         } else {
00055             led2 = 0;
00056             cam->poll();
00057             if (t.read() > 10) {
00058                 led3 = 1;
00059                 uint8_t buf[1024*8];
00060                 int r = cam->readJPEG(buf, sizeof(buf));
00061                 if (r) {
00062                     FILE* fp = fopen("/local/photo.jpg", "wb");
00063                     if (fp) {
00064                         fwrite(buf, r, 1, fp);
00065                         fclose(fp);
00066                     }
00067                     printf("took a picture\r\n");
00068                 }
00069                 t.reset();
00070                 led3 = 0;
00071             }
00072         }
00073     }
00074 }