Diff: main.cpp

Revision:

0:32a0996dff0f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jun 13 18:39:46 2012 +0000
@@ -0,0 +1,107 @@
+/*
+ * Echo server
+ * Listens on TCP and UDP ports 7 for any incoming connections
+ * Re-transmits any incoming bytes
+ */
+
+#include "mbed.h"
+#include "EthernetNetIf.h"
+
+#include "EchoServer.h"
+
+// Our Ethernet interface
+EthernetNetIf eth;
+// Our Echo server
+EchoServer server;
+
+#define byte char
+
+#define ScreenWidth 32
+#define ScreenHeight 15
+
+#define HTTPChunkSize 1024
+
+#define ScreenBufferSize ScreenWidth*ScreenHeight*3
+
+bool drawReadyFlag = false;
+
+typedef struct {
+  byte blue;
+  byte green;
+  byte red;
+} color;
+
+unsigned int fileFrameCount;
+
+byte screenBuf[ScreenBufferSize];
+
+Serial pc(USBTX, USBRX);
+
+SPI spi(p5, NC, p7); // mosi, miso, sclk
+
+void writePixel(int x, int y) {
+
+    spi.write(screenBuf[(x*ScreenHeight+y)*3]);
+    spi.write(screenBuf[(x*ScreenHeight+y)*3+1]);
+    spi.write(screenBuf[(x*ScreenHeight+y)*3+2]);
+
+}
+
+
+void updateDisplay() {
+    for (int y = ScreenHeight-1; y >= 0; y--) {
+        if (y % 2 == 0) {
+            for (int x = 0; x < ScreenWidth; x++) 
+                writePixel(x,y);
+        } 
+        else {
+            for (int x = ScreenWidth-1; x >= 0; x--)
+                writePixel(x,y);
+        }
+    }
+    wait_us(800);
+}
+
+ 
+
+void hexDump(byte *buf, unsigned long len, int wid) {
+
+    for (unsigned long i = 0; i < len; i++) {
+        if (!(i % wid)) pc.printf("\n");
+        else if (!(i % 4)) pc.printf(" ");
+
+        pc.printf("%02x", buf[i]);
+    }
+    pc.printf("\n");
+}
+
+
+/*
+    Function: main
+    
+    Sets up the Ethernet interface using DHCP, reports the assigned
+    IP address via serial, binds the Echo server to port 7 on
+    TCP and UDP and then sits in a loop calling Net::poll() to
+    keep the network stack doing its thing
+*/
+int main() {
+    printf("\r\nSetting up...\r\n");
+    EthernetErr ethErr = eth.setup();
+    if (ethErr) {
+        printf("Error %d in setup.\n", ethErr);
+        return -1;
+    }
+    IpAddr ip = eth.getIp();
+    printf("mbed IP Address is %d.%d.%d.%d\r\n", ip[0], ip[1], ip[2], ip[3]);
+
+    server.bind();
+
+    printf("Entering while loop Net::poll()ing\r\n");
+    while (1) {
+        Net::poll();
+        if (drawReadyFlag) {
+            updateDisplay();
+            drawReadyFlag = false;
+        }
+    }
+}