added HTTP example

XMC_MBED/APP_HTTP-Server/.mbed

+TARGET=XMC_4500_RELAX_KIT
+TOOLCHAIN=GCC_ARM
+ROOT=.

XMC_MBED/APP_HTTP-Server/.project

+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>APP_BLINKY</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.core.ccnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+</projectDescription>
\ No newline at end of file

XMC_MBED/APP_HTTP-Server/BUILD/.mbedignore

+*

XMC_MBED/APP_HTTP-Server/Makefile

+################################################################################
+# Makefile for XMC4500 RelaxKit using uCOS-III
+# v1, 02/2018
+# Martin Horauer, UAS Technikum Wien
+#
+# Supported: Windows, Linux, OSX
+# Requirements:
+# * GCC ARM https://launchpad.net/gcc-arm-embedded/+download
+# * SEGGER JLINK https://www.segger.com/jlink-software.html
+# * DOXYGEN http://www.stack.nl/~dimitri/doxygen/
+
+################################################################################
+# USAGE
+# -----
+# make           .... build the program image
+# make debug     .... build the program image and invoke gdb
+# make flash     .... build an flash the application
+# make erase     .... erase the target device
+# make doc       .... run doxygen - output will be in > doc
+# make clean     .... remove intermediate and generated files
+
+################################################################################
+# define the name of the generated output file
+#
+TARGET        = main
+
+################################################################################
+# below only edit with care
+#
+VENDOR        = Infineon
+
+################################################################################
+# define the following symbol -D JLINK_RTT to enable JLINK_RTT tracing
+#                             -D SEMI_HOSTING to enable semi hosted tracing
+#                             comment the line to disable tracing
+TRACE         = -D SEMI_HOSTING
+
+################################################################################
+# TOOLS & ARGS
+#
+SRC           = $(wildcard *.cpp)
+TERMINAL      = gnome-terminal
+TOOLCHAIN     = GCC_ARM
+BOARD         = XMC_4500_RELAX_KIT
+BUILDDIR      = BUILD
+DOCDIR        = DOC
+MBED          = mbed
+GDB           = arm-none-eabi-gdb
+
+# DETERMINE OS
+ifdef SystemRoot
+  RM = del /Q
+  FixPath = $(subst /,\,$1)
+else
+  RM = rm -rf
+  FixPath = $1
+endif
+
+GDB_ARGS      = -ex "target remote :2331"
+GDB_ARGS     += -ex "monitor reset"
+GDB_ARGS     += -ex "load"
+GDB_ARGS     += -ex "monitor reset"
+
+################################################################################
+# SEMI_HOSTED DEBUGGING
+GDB_ARGS     += -ex "monitor SWO EnableTarget 16000000 0 1 0"
+
+# RTT OPTION
+#GDB_ARGS     += -ex "monitor exec SetRTTAddr 0x20000000"
+#GDB_ARGS     += -ex "monitor exec SetRTTSearchRanges 0x20000000 0x1000"
+
+################################################################################
+# BUILD RULES
+all: $(SRC) build
+
+################################################################################
+# CREATE A DEBUG VESRION
+build: $(SRC)
+	@echo "----------------------------------------------------------------------"
+	@echo "Building with DEBUG Symbols"
+	@echo ""
+	$(MBED) compile -m $(BOARD) -t $(TOOLCHAIN) -N main --profile mbed-os/tools/profiles/debug.json
+	@echo ""
+
+################################################################################
+# CREATE A RELEASE VESRION
+release: $(SRC)
+	@echo "----------------------------------------------------------------------"
+	@echo "Build a RELEASE version"
+	@echo ""
+	$(MBED) compile -m $(BOARD) -t $(TOOLCHAIN) -N main
+	@echo ""
+
+################################################################################
+# DEBUG RULES
+debug: build $(BUILDDIR)/$(BOARD)/$(TOOLCHAIN)/$(TARGET).elf
+ifdef SystemRoot
+	@call start JLinkGDBServer -Device XMC4500-1024 -if SWD
+else
+	$(TERMINAL) -e "JLinkGDBServer -Device XMC4500-1024 -if SWD" &
+	sleep 1 && $(TERMINAL) -e "telnet 127.0.0.1 2333" & 
+endif
+	$(GDB) -q  $(BUILDDIR)/$(BOARD)/$(TOOLCHAIN)/$(TARGET).elf $(GDB_ARGS)
+
+################################################################################
+# FLASH RULES
+flash: build $(BUILDDIR)/$(BOARD)/$(TOOLCHAIN)/$(TARGET).hex
+	echo -e 'speed 4000\nconnect\nh\nloadbin $(BUILDDIR)/$(BOARD)/$(TOOLCHAIN)/$(TARGET).hex,0xC000000\nr\ng\nq' | JLinkExe -Device XMC4500-1024 -if SWD
+
+################################################################################
+# ERASE DEVICE
+erase:
+	echo -e 'speed 4000\nconnect\nerase\nr\nq' | JLinkExe -Device XMC4500-1024 -if SWD
+
+################################################################################
+# DOCUMENTATION RULES
+doc: $(SRC)
+	doxygen
+
+################################################################################
+# CLEAN RULES
+clean:
+	$(RM) $(call FixPath, *.pyc)
+	$(RM) $(call FixPath, ${BUILDDIR}/*)
+	$(RM) $(call FixPath, ${DOCDIR}/html/*)
+
+################################################################################
+# EOF
+################################################################################

XMC_MBED/APP_HTTP-Server/README.adoc

+= Simple HTTP Server Example
+
+This example shows how you can setup the Ethernet Interface on the XMC4500 
+RelaxKit to run a simple HTTP server.
+
+The web-ui provides functionality to toggle both Led's and see the actual status
+of the push buttons. Furthermore, the network time provided by an NTP server can
+be programmed into the internal RTC.
+
+image:xmc_server.png[]
+
+== Project Setup
+
+This project relies on other libraries. In particular, if the folder 
+`ntp-client` and/or the file `ntp-client.lib` are missing, execute:
+
+[source%nowrap, c]
+----
+mbed add https://github.com/ARMmbed/ntp-client/#72a3f00ca7c1da7042d53d7f3c59a73cb208571d
+----
+
+== Configuration: Static IP Address
+
+Use this option when connecting directly with the ethernet interface on your PC.
+To that end, define `STATIC_IP` to configure the IP-Address, Network-Mask and
+Default Gateway as shown below:
+
+[source%nowrap, c]
+----
+#define STATIC_IP
+/*               IP-Address      Network-Mask     Gateway                     */
+eth.set_network("192.168.1.40", "255.255.255.0", "192.168.1.2"); 
+----
+
+image:static_ip_config.png[]
+
+== Configuration: Dynamic IP Address
+
+Use this option when connecting the XMC directly to an network switch. To that 
+end, remove the `STATIC_IP` to get an IP-Address from an DHCP server in your 
+network.
+
+[source%nowrap, c]
+----
+// #define STATIC_IP
+----
+
+== Testing
+
+TIP: Connect the STDIO UART to see which IP-Address the XMC gets from the DHCP 
+server.
+
+image:xmc_server_log.png[]
+
+TIP: Wireshark and ICMP (Ping...) are very helpful tools to debug or monitor 
+your application!
+
+== Known Bugs
+
+* Only works if the ethernet cable is plugged-in during start-up! Workaround:
+Create a thread to monitor the ethernet link!
+* Clicking the `Toggle Led` button at the same time when the web-page is
+refreshing can cause a missing button request because the TCP-Socket is already
+in use!
+
+== Makefile Usage
+
+[source%nowrap, bash]
+----
+make          # build the application
+make flash    # flash the application
+make debug    # debug the application
+make erase    # erase the program memory
+make doc      # invoke doxygen
+make clean    # clean the project
+----
+
+= Manual 
+
+== Building
+
+[source%nowrap, bash]
+----
+mbed compile -c -m XMC_4500_RELAX_KIT -t GCC_ARM -N main
+----
+
+This creates several files in the BUILD directory where you can find the
+executable (bin, elf, hex ...).
+
+== Flashing
+
+[source%nowrap, bash]
+----
+$ JLinkExe -Device XMC4500-1024 -if SWD -speed 4000
+J-LINK> h
+J-Link> loadfile BUILD/XMC_4500_RELAX_KIT/GCC_ARM/main.hex
+J-Link> r
+J-Link> g
+----
+
+== Debugging
+
+(1) Build the application with debug symbols enabled by adding `--profile mbed-os/tools/profiles/debug.json`.
+
+[source%nowrap, bash]
+----
+mbed compile -c -m XMC_4500_RELAX_KIT -t GCC_ARM -N main --profile mbed-os/tools/profiles/debug.json
+----
+
+(2) Start the `JLinkGDEBServer`, e.g.:
+
+[source%nowrap, bash]
+----
+JLinkGDBServer -Device XMC4500-1024 -if SWD
+----
+
+(3) In order to log messages printed to `stdout` we connect to port 2333 via
+telnet.
+
+[source%nowrap, bash]
+----
+telnet 127.0.0.1 2333
+----
+
+(4) We launch the debugger and control the debug session:
+
+[source%nowrap, bash]
+----
+arm-none-eabi-gdb -q BUILD/XMC_4500_RELAX_KIT/GCC_ARM/main.elf
+(gdb) target remote :2331
+(gdb) monitor reset
+(gdb) load
+(gdb) monitor reset
+(gdb) b main
+(gdb) c
+[...]
+----
+

XMC_MBED/APP_HTTP-Server/main.cpp

+
+/* mbed Example Program
+ * Copyright (c) 2006-2014 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+/******************************************************************* Includes */
+#include "mbed.h"
+#include "rtos.h"
+#include "EthernetInterface.h"
+#include "NTPClient.h"
+#include "TCPServer.h"
+#include "TCPSocket.h"
+
+/******************************************************************** Defines */
+#define NTP_UPDATE_TIME         0x01
+#define STATIC_IP               1
+
+/************************************************************** HTTP Response */
+static char http_response[2048];
+static const char http_status_line[] = "HTTP/1.0 200 OK\r\n";
+static const char http_header_fields[] = "Content-Type: text/html; charset=utf-8\r\n\r\n";
+static char http_msg_body[] = ""                                                    \
+        "<html>" "\r\n"                                                             \
+        "  <body style=\"display:flex;text-align:center\">" "\r\n"                  \
+        "    <div style=\"margin:auto\">" "\r\n"                                    \
+        "      <h1>HTTP Server Example</h1>" "\r\n"                                 \
+        "      <p>Toggle the Led's on the XMC4500 Relax Kit !</p>" "\r\n"           \
+        "      <button id=\"toggle1\">Toggle LED1</button>" "\r\n"                  \
+        "      <button id=\"toggle2\">Toggle LED2</button>" "\r\n"                  \
+        "      <p>Button 1: Inactive</p>" "\r\n"                                    \
+        "      <p>Button 2: Inactive</p>" "\r\n"                                    \
+        "      <p>Program Network Time into RTC</p>" "\r\n"                         \
+        "      <button id=\"set_time\">Set Time</button>" "\r\n"                    \
+        "      <p>Actual System Time: Sat Mar 3 20:25:32 2018  </p>" "\r\n"         \
+        "    </div> <br>" "\r\n"                                                    \
+        "  </body>" "\r\n"                                                          \
+        "  <br>" "\r\n"                                                             \
+        "  <script>document.querySelector('#toggle1').onclick = function() {"       \
+        "  var x1 = new XMLHttpRequest(); x1.open('POST', '/toggle1'); x1.send();"  \
+        "  }</script>"                                                              \
+        "  <script>document.querySelector('#toggle2').onclick = function() {"       \
+        "  var x2 = new XMLHttpRequest(); x2.open('POST', '/toggle2'); x2.send();"  \
+        "  }</script>"                                                              \
+        "  <script>document.querySelector('#set_time').onclick = function() {"      \
+        "  var x3 = new XMLHttpRequest(); x3.open('POST', '/set_time'); x3.send();" \
+        "  }</script>"                                                              \
+        "  <script>var myVar = setInterval(myTimer, 1000);"                         \
+        "  function myTimer() {"                                                    \
+        "  location.reload(true); "                                                 \
+        "  }</script>"                                                              \
+        "</html>";
+
+/******************************************************************** Globals */
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalIn sw1(SW1);
+DigitalIn sw2(SW2);
+Thread ntp_thread;
+Thread bt_thread;
+EventFlags ntp_update_event;
+
+/****************************************************************** Functions */
+
+/**
+ * Change timestamp in http source
+ */
+static void change_button_state_in_http_source(void){
+
+    char *ret;
+
+    /* Change button 1 state */
+    ret = strstr(http_msg_body, "Button 1:");
+    if(!sw1){
+        strncpy(ret + 10, "Active  ", 8);
+    }else{
+        strncpy(ret + 10, "Inactive", 8);
+    }
+
+    /* Change button 2 state */
+    ret = strstr(http_msg_body, "Button 2:");
+    if(!sw2){
+        strncpy(ret + 10, "Active  ", 8);
+    }else{
+        strncpy(ret + 10, "Inactive", 8);
+    }
+
+    /* Build new http response */
+    sprintf(http_response, "%s%s%s",http_status_line, http_header_fields, http_msg_body);
+}
+
+/**
+ * Change buttons state in http source
+ */
+static void change_timestamp_in_http_source(void){
+
+    char *ret;
+
+    /* Get current time from RTC */
+    time_t seconds = time(NULL);
+
+    /* Change time string in http_msg_body[] */
+    ret = strstr(http_msg_body, "Time:");
+    strncpy(ret + 6, ctime(&seconds), 25);
+
+    /* Build new http response */
+    sprintf(http_response, "%s%s%s",http_status_line, http_header_fields, http_msg_body);
+}
+
+/**
+ * NTP Client Thread
+ */
+void ntp_client_thread(EthernetInterface *eth) {
+
+    NTPClient ntp(eth);
+    time_t timestamp;
+
+    while (true) {
+        /* Wait until request from main thread */
+        ntp_update_event.wait_all(NTP_UPDATE_TIME);
+        /* Get Time from NTP server */
+        timestamp = ntp.get_timestamp(5000);
+        if (timestamp < 0) {
+            printf("An error occurred when getting the time. Code: %lld\r\n", timestamp);
+        } else {
+            /* Set RTC Time */
+            set_time(timestamp);
+            /* Print Time */
+            printf("Current time is %s\r\n", ctime(&timestamp));
+        }
+    }
+}
+
+/**
+ * Update Button state thread
+ */
+void button_thread(void) {
+
+    while (true) {
+
+        wait(1);
+        change_button_state_in_http_source();
+        change_timestamp_in_http_source();
+    }
+}
+
+/**
+ * Main Function
+ */
+int main()
+{
+    TCPServer srv;
+    TCPSocket clt_sock;
+    SocketAddress clt_addr;
+    EthernetInterface eth;
+    char rec_buffer[256];
+    int rcount;
+
+    printf("Basic HTTP server example\n");
+
+#ifdef STATIC_IP
+    eth.set_network("192.168.1.40", "255.255.255.0", "192.168.1.2");
+#endif
+
+    /* Initialize low level Ethernet driver and lwip stack */
+    eth.connect();
+
+    /* Print target IP address */
+    printf("The target IP address is '%s'\n", eth.get_ip_address());
+
+    /* Open the server on ethernet stack */
+    srv.open(&eth);
+
+    /* Bind the HTTP port (TCP 80) to the server */
+    srv.bind(eth.get_ip_address(), 80);
+
+    /* Can handle 5 simultaneous connections */
+    srv.listen(5);
+
+    /* Set RTC time to 1 Jan 1970 */
+    set_time(0);
+    /* Update timestamp in http source */
+    change_timestamp_in_http_source();
+
+    /* start NTP client thread */
+    ntp_thread.start(callback(ntp_client_thread, &eth));
+
+    /* start button update thread */
+    bt_thread.start(button_thread);
+
+    while (true) {
+        /* Wait until request from client */
+        srv.accept(&clt_sock, &clt_addr);
+        printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port());
+
+        /* Get receive message */
+        rcount = clt_sock.recv(rec_buffer, sizeof rec_buffer);
+        printf("recv %d [%.*s]\r\n", rcount, strstr(rec_buffer, "\r\n")-rec_buffer, rec_buffer);
+        /* Check if LED1 toggle button was clicked */
+        if(strstr(rec_buffer, "toggle1") != NULL){
+            led1 = !led1;
+            continue;
+        }
+        /* Check if LED2 toggle button was clicked */
+        if(strstr(rec_buffer, "toggle2") != NULL){
+            led2 = !led2;
+            continue;
+        }
+        /* Check if Set Time button was clicked */
+        if(strstr(rec_buffer, "set_time") != NULL){
+            /* Notify NTP client thread to update time */
+            ntp_update_event.set(NTP_UPDATE_TIME);
+            continue;
+        }
+        /* Send HTTP response */
+        clt_sock.send(http_response, strlen(http_response));
+    }
+}
+
+/*EOF*/

XMC_MBED/APP_HTTP-Server/mbed-os

+../mbed-os/
\ No newline at end of file

XMC_MBED/APP_HTTP-Server/mbed-os.lib

+https://github.com/mbed-Infineon-XMC/mbed-os/#e12da153ac2ed9ee8693c8aaa5c3eabae5d6c36c

XMC_MBED/APP_HTTP-Server/mbed_settings.py

+"""
+mbed SDK
+Copyright (c) 2016 ARM Limited
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+
+import subprocess
+from os.path import join, abspath, dirname
+
+#ROOT = abspath(join(dirname(__file__), "."))
+
+##############################################################################
+# Build System Settings
+##############################################################################
+#BUILD_DIR = abspath(join(ROOT, "build"))
+
+# ARM
+#ARM_PATH = "C:/Program Files/ARM"
+
+# GCC ARM
+#GCC_ARM_PATH = ""
+GCC_ARM_PATH = dirname(subprocess.check_output(["which", "arm-none-eabi-gcc"]))
+
+# GCC CodeRed
+#GCC_CR_PATH = "C:/code_red/RedSuite_4.2.0_349/redsuite/Tools/bin"
+
+# IAR
+#IAR_PATH = "C:/Program Files (x86)/IAR Systems/Embedded Workbench 7.0/arm"
+
+# Goanna static analyser. Please overload it in private_settings.py
+#GOANNA_PATH = "c:/Program Files (x86)/RedLizards/Goanna Central 3.2.3/bin"
+
+#BUILD_OPTIONS = []
+
+# mbed.org username
+#MBED_ORG_USER = ""

ntp-client @ 72a3f00c

+Subproject commit 72a3f00ca7c1da7042d53d7f3c59a73cb208571d

XMC_MBED/APP_HTTP-Server/ntp-client.lib

+https://github.com/ARMmbed/ntp-client/#72a3f00ca7c1da7042d53d7f3c59a73cb208571d

XMC_MBED/README.adoc

@@ -36,6 +36,17 @@ This adds a folder `ADJDs311` containing the respective sources and adds a file
 `ADJDs311.lib` that simply contains the above link. This löibrary will than be 
 considered when the project is being built.
 
+== STDIO_UART
+
+The mbed library outputs `printf()` messages via a standard UART interface that
+is per default enabled and configured. For the XMC RelaxKit the default UART is
+configured in
+`targets/TARGET_Infineon/TARGET_XMC4XXX/TARGET_XMC4500/PeripheralNames.h` and
+`targets/TARGET_Infineon/TARGET_XMC4XXX/serial_api.c`, respectively. In
+particular, UART2 (pins P0.4 and P0.5) is used. Default setting is 9600-8N1.
+
+TIP: Keep UART2 in all MBED projects connected to a terminal program.
+
 = Step-by-Step Building/Flashing/Debugging