Diff: cpp/Ethernet.h

Revision:

0:fd0d7bdfcdc2

Child:

2:143cac498751

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cpp/Ethernet.h	Tue Nov 20 17:24:08 2012 +0000
@@ -0,0 +1,176 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2012 ARM Limited
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef MBED_ETHERNET_H
+#define MBED_ETHERNET_H
+
+#include "platform.h"
+
+#if DEVICE_ETHERNET
+
+namespace mbed {
+
+/** An ethernet interface, to use with the ethernet pins.
+ *
+ * Example:
+ * @code
+ * // Read destination and source from every ethernet packet
+ * 
+ * #include "mbed.h"
+ *
+ * Ethernet eth;
+ *  
+ * int main() {
+ *     char buf[0x600];
+ *     
+ *     while(1) {
+ *         int size = eth.receive();
+ *         if(size > 0) {
+ *             eth.read(buf, size);
+ *             printf("Destination:  %02X:%02X:%02X:%02X:%02X:%02X\n",
+ *                     buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
+ *             printf("Source: %02X:%02X:%02X:%02X:%02X:%02X\n",
+ *                     buf[6], buf[7], buf[8], buf[9], buf[10], buf[11]);
+ *         }
+ *         
+ *         wait(1);
+ *     }
+ * }
+ * @endcode
+ */
+class Ethernet {
+
+public:
+    
+    /** Initialise the ethernet interface.
+     */
+    Ethernet();
+
+    /** Powers the hardware down.
+     */
+    virtual ~Ethernet();
+
+    enum Mode {
+        AutoNegotiate,
+        HalfDuplex10,
+        FullDuplex10,
+        HalfDuplex100,
+        FullDuplex100
+    };
+
+    /** Writes into an outgoing ethernet packet.
+     *
+     *  It will append size bytes of data to the previously written bytes.
+     *  
+     *  @param data An array to write.
+     *  @param size The size of data.
+     *
+     *  @returns
+     *   The number of written bytes.
+     */
+    int write(const char *data, int size);
+
+    /** Send an outgoing ethernet packet.
+     *
+     *  After filling in the data in an ethernet packet it must be send.
+     *  Send will provide a new packet to write to.
+     *
+     *  @returns
+     *    0 if the sending was failed,
+     *    1 if the package is successfully sent.
+     */
+    int send();
+
+    /** Recevies an arrived ethernet packet.
+     *
+     *  Receiving an ethernet packet will drop the last received ethernet packet 
+     *  and make a new ethernet packet ready to read.
+     *  If no ethernet packet is arrived it will return 0.
+     *
+     *  @returns
+     *    0 if no ethernet packet is arrived,
+     *    or the size of the arrived packet.
+     */
+    int receive();
+
+    /** Read from an recevied ethernet packet.
+     *
+     *  After receive returnd a number bigger than 0it is
+     *  possible to read bytes from this packet.
+     *  Read will write up to size bytes into data.
+     *
+     *  It is possible to use read multible times. 
+     *  Each time read will start reading after the last read byte before.
+     *
+     *  @returns
+     *  The number of byte read.
+     */
+    int read(char *data, int size);
+    
+    /** Gives the ethernet address of the mbed.
+     *
+     *  @param mac Must be a pointer to a 6 byte char array to copy the ethernet address in.
+     */
+    void address(char *mac);
+
+    /** Returns if an ethernet link is pressent or not. It takes a wile after Ethernet initializion to show up.
+     * 
+     *  @returns
+     *   0 if no ethernet link is pressent,
+     *   1 if an ethernet link is pressent.
+     *
+     * Example:
+     * @code
+     * // Using the Ethernet link function
+     * #include "mbed.h"
+     * 
+     * Ethernet eth;
+     *
+     * int main() {
+     *     wait(1); // Needed after startup.
+     *     if (eth.link()) {
+     *          printf("online\n");
+     *     } else {
+     *          printf("offline\n");
+     *     }
+     * }
+     * @endcode
+     */
+    int link();
+
+    /** Sets the speed and duplex parameters of an ethernet link
+     *
+     * - AutoNegotiate      Auto negotiate speed and duplex
+     * - HalfDuplex10       10 Mbit, half duplex
+     * - FullDuplex10       10 Mbit, full duplex
+     * - HalfDuplex100      100 Mbit, half duplex
+     * - FullDuplex100      100 Mbit, full duplex
+     *
+     *  @param mode the speed and duplex mode to set the link to:
+     */
+    void set_link(Mode mode);
+};
+
+} // namespace mbed
+
+#endif
+
+#endif