Dan Cohen
This example shows using the SeeedStudio arch pro as an Ethernet server. It will initialize the Ethernet port, display its IP address, display the IP address of connecting clients and then return data sent from the client.
Dependencies: EthernetInterface SeeedGrayOLED USBDevice mbed-rtos mbed
Fork of
Ethernet_Status_HelloWorld
by 
Edoardo De Marchi
This mbed server example for SeeedStudio also needs a client to connect.
I compiled and ran this on my opensuse linux virtual machine but I think it should compile and run fine on most linux distrubutions and probably on OSX as well:
<codei>
- include <stdio.h>
- include <stdlib.h>
- include <unistd.h>
- include <string.h>
- include <sys/types.h>
- include <sys/socket.h>
- include <netinet/in.h>
- include <netdb.h>
void error(const char *msg) { perror(msg); exit(0); }
int main(int argc, char *argv[]) { int sockfd, portno, n; struct sockaddr_in serv_addr; struct hostent *server;
char buffer[256]; if (argc < 3) { fprintf(stderr,"usage %s hostname port\n", argv[0]); exit(0); } portno = atoi(argv[2]); sockfd = socket(AF_INET, SOCK_STREAM, 0); if (sockfd < 0) error("ERROR opening socket"); server = gethostbyname(argv[1]); if (server == NULL) { fprintf(stderr,"ERROR, no such host\n"); exit(0); } bzero((char *) &serv_addr, sizeof(serv_addr)); serv_addr.sin_family = AF_INET; bcopy((char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr, server->h_length); serv_addr.sin_port = htons(portno); if (connect(sockfd,(struct sockaddr *) &serv_addr,sizeof(serv_addr)) < 0) error("ERROR connecting"); printf("Please enter the message: "); bzero(buffer,256); fgets(buffer,255,stdin); n = write(sockfd,buffer,strlen(buffer)); if (n < 0) error("ERROR writing to socket"); bzero(buffer,256); n = read(sockfd,buffer,255); if (n < 0) error("ERROR reading from socket"); printf("%s\n",buffer); close(sockfd); return 0; } <code>
Revision 0:9e8b3fd68f6c, committed 2014-01-15
- Comitter:
- edodm85
- Date:
- Wed Jan 15 20:37:57 2014 +0000
- Child:
- 1:67817eb9bb9e
- Commit message:
- First Version
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface.lib Wed Jan 15 20:37:57 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/EthernetInterface/#6a67d2bddc7c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eth_status.h Wed Jan 15 20:37:57 2014 +0000
@@ -0,0 +1,41 @@
+#include "lpc_phy.h"
+
+/** \brief DP83848 PHY status definitions */
+#define DP8_REMOTEFAULT (1 << 6) /**< Remote fault */
+#define DP8_FULLDUPLEX (1 << 2) /**< 1=full duplex */
+#define DP8_SPEED10MBPS (1 << 1) /**< 1=10MBps speed */
+#define DP8_VALID_LINK (1 << 0) /**< 1=Link active */
+
+
+ // This function returns the current status of connection.
+static bool get_link_status()
+{
+ u32_t tmp = lpc_mii_read_data();
+ return (tmp & DP8_VALID_LINK) ? true : false;
+}
+
+ // This function returns the status of transmission.
+static char* get_transmission_status()
+{
+ u32_t tmp = lpc_mii_read_data();
+ if(tmp & DP8_FULLDUPLEX)
+ {
+ return "FULL DUPLEX";
+ }else
+ {
+ return "HALF DUPLEX";
+ }
+}
+
+ // This function returns the speed of the connection.
+static int get_connection_speed()
+{
+ u32_t tmp = lpc_mii_read_data();
+ return (tmp & DP8_SPEED10MBPS) ? 10 : 100;
+}
+
+ // This function returns the current value in the MII data register.
+u32_t mii_read_data()
+{
+ return lpc_mii_read_data(); // 16-bit MRDD - address 0x2008 4030
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jan 15 20:37:57 2014 +0000
@@ -0,0 +1,85 @@
+/*
+ * Author: Edoardo De Marchi
+ * Date: 15/01/14
+ * Notes: OV7670 + FIFO AL422B camera test (TCP Ethernet)
+*/
+
+
+#include "mbed.h"
+#include "EthernetInterface.h"
+#include "eth_status.h"
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+//ETHERNET
+#define ECHO_SERVER_PORT 2000
+
+char* ip = "192.168.153.153"; // ip
+char* mask = "255.255.255.0"; // mask
+char* gateway = "192.168.153.100"; // gateway
+EthernetInterface eth;
+TCPSocketConnection client;
+TCPSocketServer server;
+
+
+int Init()
+{
+ led1 = 0;
+ led2 = 0;
+ led3 = 0;
+ led4 = 0;
+
+
+ // ETHERNET
+ eth.init(ip, mask, gateway);
+ eth.connect();
+ server.bind(ECHO_SERVER_PORT);
+ server.listen(1);
+ printf("IP Address is %s\r\n", eth.getIPAddress());
+ printf("%s - Speed: %d Mbps\n", get_transmission_status(), get_connection_speed());
+
+ return 0;
+}
+
+
+
+int main()
+{
+ bool eth_status = false;
+ bool eth_status_temp = true;
+
+ Init();
+
+
+ while(true)
+ {
+ printf("\nWait for new connection...\n");
+ server.accept(client);
+
+ printf("Connection from: %s\n", client.get_address());
+
+ while (true)
+ {
+ if(!get_link_status())
+ {
+ eth_status = true;
+ }else
+ {
+ led1 = 0;
+ }
+
+ if(eth_status == eth_status_temp)
+ {
+ eth_status_temp = !eth_status;
+ printf("Check cable connection\r\n");
+ led1 = 1;
+ eth_status = false;
+ }
+ led2 = !led2;
+ osDelay(500);
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Wed Jan 15 20:37:57 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#29007aef10a4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jan 15 20:37:57 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/a9913a65894f \ No newline at end of file