NXP
This "Hello World" program is used in conjunction with the Ethernet_UDP_server program. It communicates between two FRDM-K64F boards via the Ethernet protocol.
Dependencies: EthernetInterface mbed-rtos mbed
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Ethernet_UDP_client
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Freescale
Revision 0:29858159c001, committed 2015-12-23
- Comitter:
- mareikeFSL
- Date:
- Wed Dec 23 21:00:27 2015 +0000
- Commit message:
- initial commit
Changed in this revision
diff -r 000000000000 -r 29858159c001 EthernetInterface.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface.lib Wed Dec 23 21:00:27 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/EthernetInterface/#2fc406e2553f
diff -r 000000000000 -r 29858159c001 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Dec 23 21:00:27 2015 +0000
@@ -0,0 +1,119 @@
+/*------------------------------------------------------------------------------------*/
+/* Ethernet UDP Client (to be used with Ethernet_UDP_server) */
+/*------------------------------------------------------------------------------------*/
+
+/*--COMPANY-----AUTHOR------DATE------------REVISION----NOTES-------------------------*/
+/* NXP mareikeFSL 2015.12.23 rev 1.0 initial */
+/* */
+/*------------------------------------------------------------------------------------*/
+/* This "Hello World" program is used in conjunction with the Ethernet_UDP_server */
+/* program. It communicates between two FRDM-K64F boards via the Ethernet protocol. */
+/* To use this program, you need to do the following: */
+/* - Connect an Ethernet cable between two FRDM-K64F boards (a crossover cable */
+/* is not required). */
+/* - Flash one board with Ethernet_UDP_client and the other with */
+/* Ethernet_UDP_server */
+/* - [optional] If you would like to see the "Hello World" output on your */
+/* monitor, install and open a terminal. Tera Term is used in the Wiki for */
+/* this program. */
+/*------------------------------------------------------------------------------------*/
+
+
+/*--INCLUDES----------------------------------------------------------------------------*/
+#include "mbed.h"
+#include "EthernetInterface.h"
+
+
+/*--DEFINES-----------------------------------------------------------------------------*/
+
+
+
+/*--CONSTANTS---------------------------------------------------------------------------*/
+const int PORT = 7;
+
+static const char* SERVER_IP = "192.168.1.101"; //IP of server board
+static const char* CLIENT_IP = "192.168.1.102"; //IP of client board
+static const char* MASK = "255.255.255.0"; //mask
+static const char* GATEWAY = "192.168.1.1"; //gateway
+
+
+/*--INITS-------------------------------------------------------------------------------*/
+Serial pc(USBTX, USBRX); //create PC interface
+EthernetInterface eth; //create ethernet
+UDPSocket sock; //creat Ethernet socket
+Endpoint server; //create endpoint
+
+DigitalOut red(LED_RED); //debug led
+DigitalOut green(LED_GREEN); //debug led
+
+
+/*--VARIABLES---------------------------------------------------------------------------*/
+int n; //size of received message
+char in_buffer[1]; //create receive buffer
+char counter[1] = {0}; //sample send buffer
+
+
+/*--FUNCTION DECLARATIONS---------------------------------------------------------------*/
+void init_usb(void); //initializes pc.printf if required
+void init_eth(void); //initializes Ethernet
+void end_eth(void); //closes Ethernet socket
+int main(void); //main
+
+
+/*--FUNCTION DEFINITIONS----------------------------------------------------------------*/
+
+/*****************************************************************************INIT_USB***/
+void init_usb(void)
+{
+ pc.baud(9600); //baud
+
+} //end init_usb()
+
+/*****************************************************************************INIT_ETH***/
+void init_eth(void)
+{
+ eth.init(CLIENT_IP, MASK, GATEWAY); //set up IP
+ eth.connect(); //connect ethernet
+ pc.printf("\nCLIENT - Client IP Address is %s\r\n", eth.getIPAddress()); //get client IP address
+
+ sock.init(); //initialize socket
+
+ server.set_address(SERVER_IP, PORT); //set address of server
+
+} //end init_eth()
+
+/******************************************************************************END_ETH***/
+void end_eth(void)
+{
+ sock.close(); //close socket
+ eth.disconnect(); //close Ethernet
+
+} //end end_eth()
+
+/*********************************************************************************MAIN***/
+int main(void)
+{
+ red = 0; //client
+ green = 1;
+
+ init_usb(); //initialize the PC interface
+ init_eth(); //initialize the Ethernet connection
+
+ while(true) //repeat forever
+ {
+ pc.printf("\nCLIENT - Sending '%i' to server %s\r\n", counter[0], SERVER_IP); //print message to send
+ sock.sendTo(server, counter, sizeof(counter)); //send message
+
+ pc.printf("CLIENT - Waiting for UDP packet...\r\n"); //wait for message
+
+ n = sock.receiveFrom(server, in_buffer, sizeof(in_buffer)); //receive message from server
+
+ in_buffer[n] = '\0'; //add \0 to end of message
+ pc.printf("CLIENT - Received '%i' from server %s\r\n", in_buffer[0], SERVER_IP); //print message received
+
+ counter[0] = (counter[0] + 1)%11; //only count up to 10, then reset to 0
+
+ wait(1); //wait 1 second
+ }
+
+} //end main()
diff -r 000000000000 -r 29858159c001 mbed-rtos.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-rtos.lib Wed Dec 23 21:00:27 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-rtos/#c825593ece39
diff -r 000000000000 -r 29858159c001 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Dec 23 21:00:27 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89 \ No newline at end of file