Jasper Wallace / Mbed 2 deprecated bandwidth-meter-net

The London Hackspace Bandwidth meter, now works over ethernet.

Dependencies:   EthernetInterface LPD8806 Tiny-HTTPD mbed-rtos mbed BonjourLib

Diff: main.cpp

Revision:
0:0e7057b49904
Child:
2:49025fae1e1f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri May 30 03:56:10 2014 +0000
@@ -0,0 +1,300 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+#include "rtos.h"
+#include "vfd.h"
+#include "LPD8806.h"
+#include "HTTPD.h"
+
+DigitalOut myled(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+
+LPD8806 strip = LPD8806(32);
+EthernetInterface eth;
+HTTPD *httpd;
+
+//LocalFileSystem local("local");
+
+void strip_clear() {
+    int i;
+
+    for (i = 0 ; i < strip.numPixels() ; i++) {
+        // clear the strip
+        strip.setPixelColor(i, strip.Color(0, 0, 0));
+    }
+}
+
+void setPixelsTop(int start, int end, int colour) {
+    int i;
+
+    for (i = start; i < end + 1 ; i++) {
+        strip.setPixelColor(i, colour);
+    }
+}
+
+void setPixelsBottom(int start, int end, int colour) {
+    int i;
+
+    for (i = start; i < end + 1 ; i++) {
+        strip.setPixelColor(16 + i, colour);
+    }
+}
+
+/* 0 - 16 */
+void top_strip(int quantity) {
+    if (quantity < 16) {
+        // blank unused bits.
+        setPixelsTop(quantity, 15, 0);
+    }
+
+    if (quantity == 0) return;
+
+    quantity --;
+
+    setPixelsTop(0, quantity < 12 ? quantity : 11, strip.Color(0, 127, 0));
+
+    if (quantity > 11)
+        setPixelsTop(12, quantity < 14 ? quantity : 14, strip.Color(127, 127, 0));
+
+    if (quantity > 13)
+        setPixelsTop(14, quantity < 16 ? quantity : 16, strip.Color(127, 0, 0));
+}
+
+void bottom_strip(int quantity) {
+    if (quantity < 16) {
+        // blank unused bits.
+        setPixelsBottom(quantity, 15, 0);
+    }
+
+    if (quantity == 0) return;
+    quantity --;
+
+    setPixelsBottom(0, quantity < 12 ? quantity : 11, strip.Color(0, 127, 0));
+
+    if (quantity > 11)
+        setPixelsBottom(12, quantity < 14 ? quantity : 14, strip.Color(127, 127, 0));
+
+    if (quantity > 13)
+        setPixelsBottom(14, quantity < 16 ? quantity : 16, strip.Color(127, 0, 0));
+}
+
+void emf_blue() {
+        setPixelsBottom(0, 15, strip.Color(0, 161, 228));
+        setPixelsTop(0, 15, strip.Color(0, 161, 228));
+}
+
+const static char *ok = "Ok";
+const static char *fail = "Fail";
+
+const char* const index_page =
+    "<html><title>LHS Bandwidth Meter</title>"
+    "<body>"
+    "<h1>Bandwidth Meter</h1>"
+    "<h1>Commands:</h1>"
+
+    "<h2>Led Strips:</h2>"
+    "<ul>"
+    "<li>/s/clear - clear the led strips</li>"
+    "<li>/s/t?<i>amount</i> - set the top strip to <i>amount</i> (0-16).</li>"
+    "<li>/s/b?<i>amount</i> - set the bottom strip to <i>amount</i> (0-16).</li>"
+    "<li>/s/set?&lt;t,b&gt;hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh - set the LEDs in the top ('t') or bottom ('b') strip to hhh to colours.</li>"
+    "</ul>"
+    "<p><a href=\"/s/clear\">clear</a></p>"
+
+    "<h2>VFD</h2>"
+    "<ul>"
+    "<li>/v/r - reset the vfd.</li>"
+    "<li>/v/c - clear the vfd.</li>"
+    "<li>/v/p?<i>x,y</i> - set the cursor position to <i>x,y</i>. 0,0 is top left.</li>"
+    "<li>/v/w?<i>text</i> - write <i>text</i> at the current cursor position</li>"
+    "</ul>"
+
+    "</body>"
+    "</html>";
+ 
+const char* const text_plain = "Content-Type: text/plain\r\n";
+
+void callback_static (int id) {
+    char buf[256];
+ 
+    strcpy(buf, httpd->getFilename(id));
+    printf("static %d %s\r\n", id, buf);
+ 
+    if (strcmp(buf, "") == 0 || strcmp(buf, "index.html") == 0) {
+        httpd->send(id, index_page, strlen(index_page), "Content-Type: text/html\r\n");
+    } else {
+        httpd->httpdError(id, 404);
+    }
+}
+
+void s_clear(int id) {
+    httpd->send(id, ok, strlen(ok), text_plain);
+    strip_clear();
+    strip.show();
+}
+
+void s_top(int id) {
+    int q;
+
+    q = atoi(httpd->getQueryString(id));
+    if (q < 0 || q > 16) {
+        httpd->send(id, fail, strlen(fail), text_plain);
+        return;
+    }
+
+    httpd->send(id, ok, strlen(ok), text_plain);
+    top_strip(q);
+    strip.show();
+}
+
+void s_bottom(int id) {
+    int q;
+    
+    q = atoi(httpd->getQueryString(id));
+    if (q < 0 || q > 16) {
+        httpd->send(id, fail, strlen(fail), text_plain);
+        return;
+    }
+
+    httpd->send(id, ok, strlen(ok), text_plain);
+    bottom_strip(q);
+    strip.show();
+}
+
+int hex_char_to_int(char h) {
+    int ret;
+    if (h >= '0' || h <= '9') {
+        ret = h - 48;
+    } else if (h >= 'A' || h <= 'F') {
+        ret = (h - 'A') + 10;
+    } else if (h >= 'a' || h <= 'f') {
+        ret = (h - 'a') + 10;
+    }
+    return ret;
+}
+
+void s_set(int id) {
+    int p, r, g, b, poff=0;
+    const char* buf;
+
+    buf = httpd->getQueryString(id);
+    
+    if (strlen(buf) != 49) {
+        httpd->send(id, fail, strlen(fail), text_plain);
+    }
+    
+    httpd->send(id, ok, strlen(ok), text_plain);
+
+    if (buf[0] == 'b') {
+        poff = 16;
+    }
+
+    for (p = 0; p < 16 ; p ++) {
+        r = hex_char_to_int(buf[(p * 3) + 1]);
+        g = hex_char_to_int(buf[(p * 3) + 2]);
+        b = hex_char_to_int(buf[(p * 3) + 3]);
+        strip.setPixelColor(p + poff , strip.Color(r,g,b));
+    }
+
+    strip.show();
+}
+
+void s_emf(int id) {
+    emf_blue();
+    strip.show();
+}
+
+void v_reset(int id) {
+    httpd->send(id, ok, strlen(ok), text_plain);
+    vfd_reset();
+}
+
+void v_clear(int id) {
+    httpd->send(id, ok, strlen(ok), text_plain);
+    vfd_init();
+}
+
+void v_write(int id) {
+    char buf[128];
+    
+    if (strlen(httpd->getQueryString(id)) > 127) {
+        httpd->send(id, fail, strlen(fail), text_plain);
+        return;
+    }
+
+    httpd->send(id, ok, strlen(ok), text_plain);
+    httpd->urldecode(httpd->getQueryString(id), buf, 128);
+    send_text(buf);
+}
+
+void v_position(int id) {
+    unsigned int v,h;
+
+    httpd->send(id, ok, strlen(ok), text_plain);
+
+    sscanf(httpd->getQueryString(id), "%d,%d", &h,&v);
+    if (v > 3) v = 0;
+    if (h > 19) h = 0;
+    vfd_pos(h, v);
+}
+
+void v_logo(int id) {
+    vfd_init();
+    logo();
+}
+
+int main() {
+
+    led3 = 1;
+    
+    printf("Hello World\n\r");
+
+    wait_ms(10);
+    vfd_reset();
+    wait_ms(10);
+    vfd_init();
+    wait_ms(10);
+    logo();
+
+    strip.begin();
+    strip_clear();
+    strip.show();
+
+    eth.init(); //Use DHCP
+    printf("Mac address is %s\n\r", eth.getMACAddress());
+    eth.connect();
+    printf("IP Address is %s\n\r", eth.getIPAddress());
+
+    httpd = new HTTPD;
+
+    led2 = 1;
+
+    // LED strips
+    httpd->attach("/s/t", &s_top);
+    httpd->attach("/s/b", &s_bottom);
+    httpd->attach("/s/clear", &s_clear);
+    httpd->attach("/s/s", &s_set);
+    httpd->attach("/s/e", &s_emf);
+
+    // VFD
+    httpd->attach("/v/r", &v_reset);
+    httpd->attach("/v/c", &v_clear);
+    httpd->attach("/v/w", &v_write);
+    httpd->attach("/v/p", &v_position);
+    httpd->attach("/v/l", &v_logo);
+
+//    httpd->attach("/local/", "/local/");
+
+    httpd->attach("/", &callback_static);
+    httpd->start(80);
+    printf("httpd ready\r\n");
+ 
+    for (;;) {
+        httpd->poll();
+        if (myled == 0) {
+            myled = 1;
+        } else {
+            myled = 0;
+        }
+    }    
+}