Adam Green / Mbed 2 deprecated WeatherStation

Web server based weather station using Sparkfun Weather Meters.

Dependencies:   FatFileSystem mbed WeatherMeters SDFileSystem

main.cpp@1:c7958aa34fa1, 2012-02-25 (annotated)

Committer:
AdamGreen
Date:
Sat Feb 25 03:28:05 2012 +0000
Revision:
1:c7958aa34fa1
Parent:
0:616601bde9fb 
Use published libraries where possible.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AdamGreen 0:616601bde9fb 1 /* Copyright 2012 Adam Green (http://mbed.org/users/AdamGreen/)
AdamGreen 0:616601bde9fb 2
AdamGreen 0:616601bde9fb 3 Licensed under the Apache License, Version 2.0 (the "License");
AdamGreen 0:616601bde9fb 4 you may not use this file except in compliance with the License.
AdamGreen 0:616601bde9fb 5 You may obtain a copy of the License at
AdamGreen 0:616601bde9fb 6
AdamGreen 0:616601bde9fb 7 http://www.apache.org/licenses/LICENSE-2.0
AdamGreen 0:616601bde9fb 8
AdamGreen 0:616601bde9fb 9 Unless required by applicable law or agreed to in writing, software
AdamGreen 0:616601bde9fb 10 distributed under the License is distributed on an "AS IS" BASIS,
AdamGreen 0:616601bde9fb 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AdamGreen 0:616601bde9fb 12 See the License for the specific language governing permissions and
AdamGreen 0:616601bde9fb 13 limitations under the License.
AdamGreen 0:616601bde9fb 14 */
AdamGreen 0:616601bde9fb 15 /* Provides a simple web interface to these weather meters from Sparkfun:
AdamGreen 0:616601bde9fb 16 http://www.sparkfun.com/products/8942
AdamGreen 0:616601bde9fb 17 */
AdamGreen 0:616601bde9fb 18 #include <stdarg.h>
AdamGreen 0:616601bde9fb 19 #include <mbed.h>
AdamGreen 0:616601bde9fb 20 #include "SDFileSystem.h"
AdamGreen 0:616601bde9fb 21 #include "network.h"
AdamGreen 0:616601bde9fb 22 #include "HTTPServer.h"
AdamGreen 0:616601bde9fb 23 #include "debug.h"
AdamGreen 0:616601bde9fb 24 #include "homepage.h"
AdamGreen 0:616601bde9fb 25 #include "WeatherMeters.h"
AdamGreen 0:616601bde9fb 26
AdamGreen 0:616601bde9fb 27
AdamGreen 0:616601bde9fb 28 // Name of this sample
AdamGreen 0:616601bde9fb 29 #define APPLICATION_NAME "WindMeter"
AdamGreen 0:616601bde9fb 30
AdamGreen 0:616601bde9fb 31 // Set to appropriate "#.#.#.#" string for static IP addresses or
AdamGreen 0:616601bde9fb 32 // set to NULL for DHCP to be used instead.
AdamGreen 0:616601bde9fb 33 #define HTTP_STATIC_IP_ADDRESS "192.168.0.127"
AdamGreen 0:616601bde9fb 34 #define HTTP_STATIC_SUBNET_MASK "255.255.255.0"
AdamGreen 0:616601bde9fb 35 #define HTTP_STATIC_GATEWAY_ADDRESS "192.168.0.1"
AdamGreen 0:616601bde9fb 36
AdamGreen 0:616601bde9fb 37 // Name of this device to be use with DHCP server.
AdamGreen 0:616601bde9fb 38 #define HTTP_HOST_NAME "WindMeter"
AdamGreen 0:616601bde9fb 39
AdamGreen 0:616601bde9fb 40 // Port to which the HTTP server is to be bound. The well known port number
AdamGreen 0:616601bde9fb 41 // for HTTP is 80.
AdamGreen 0:616601bde9fb 42 #define HTTP_PORT 80
AdamGreen 0:616601bde9fb 43
AdamGreen 0:616601bde9fb 44 // String used to identify this sample HTTP server to the client.
AdamGreen 0:616601bde9fb 45 #define HTTP_SERVER_NAME "lwIPHTTPServer/1.0"
AdamGreen 0:616601bde9fb 46
AdamGreen 0:616601bde9fb 47 // Root name of filesystem to be used for HTTP server sample.
AdamGreen 0:616601bde9fb 48 #define ROOT_FILESYSTEM_NAME "SD/webfs"
AdamGreen 0:616601bde9fb 49
AdamGreen 0:616601bde9fb 50 // Where the SHttpServer structure containing the HTTP_BUFFER_POOL should be
AdamGreen 0:616601bde9fb 51 // placed in the device's memory.
AdamGreen 0:616601bde9fb 52 #define HTTP_MEM_POSITION __attribute((section("AHBSRAM0"),aligned))
AdamGreen 0:616601bde9fb 53
AdamGreen 0:616601bde9fb 54 // Utility macro to determine the element count of an array.
AdamGreen 0:616601bde9fb 55 #define ARRAYSIZE(X) (sizeof(X)/sizeof(X[0]))
AdamGreen 0:616601bde9fb 56
AdamGreen 0:616601bde9fb 57
AdamGreen 0:616601bde9fb 58
AdamGreen 0:616601bde9fb 59 // GET request handler context which bases HTML on printf() substituion.
AdamGreen 0:616601bde9fb 60 class CPrintfGetRequestHandlerContext : public IHTTPRequestHandlerContext
AdamGreen 0:616601bde9fb 61 {
AdamGreen 0:616601bde9fb 62 public:
AdamGreen 0:616601bde9fb 63 // Constructors / Destructors
AdamGreen 0:616601bde9fb 64 CPrintfGetRequestHandlerContext(const char* pStatusLine,
AdamGreen 0:616601bde9fb 65 size_t StatusLineSize,
AdamGreen 0:616601bde9fb 66 const char* pHeaders,
AdamGreen 0:616601bde9fb 67 size_t HeaderSize)
AdamGreen 0:616601bde9fb 68 {
AdamGreen 0:616601bde9fb 69 m_pContent = NULL;
AdamGreen 0:616601bde9fb 70 m_pCurrent = NULL;
AdamGreen 0:616601bde9fb 71 m_ContentSize = 0;
AdamGreen 0:616601bde9fb 72 m_pStatusLine = pStatusLine;
AdamGreen 0:616601bde9fb 73 m_StatusLineSize = StatusLineSize;
AdamGreen 0:616601bde9fb 74 m_pHeaders = pHeaders;
AdamGreen 0:616601bde9fb 75 m_HeaderSize = HeaderSize;
AdamGreen 0:616601bde9fb 76 }
AdamGreen 0:616601bde9fb 77 ~CPrintfGetRequestHandlerContext()
AdamGreen 0:616601bde9fb 78 {
AdamGreen 0:616601bde9fb 79 free(m_pContent);
AdamGreen 0:616601bde9fb 80 m_pContent = NULL;
AdamGreen 0:616601bde9fb 81 m_pCurrent = NULL;
AdamGreen 0:616601bde9fb 82 m_pHeaders = NULL;
AdamGreen 0:616601bde9fb 83 m_pStatusLine = NULL;
AdamGreen 0:616601bde9fb 84 m_ContentSize = 0;
AdamGreen 0:616601bde9fb 85 m_HeaderSize = 0;
AdamGreen 0:616601bde9fb 86 m_StatusLineSize = 0;
AdamGreen 0:616601bde9fb 87 }
AdamGreen 0:616601bde9fb 88
AdamGreen 0:616601bde9fb 89 int printf(const char* pFormat, ...)
AdamGreen 0:616601bde9fb 90 {
AdamGreen 0:616601bde9fb 91 va_list ArgList;
AdamGreen 0:616601bde9fb 92 int RequiredBufferSize;
AdamGreen 0:616601bde9fb 93
AdamGreen 0:616601bde9fb 94 // Only expect this to be called once.
AdamGreen 0:616601bde9fb 95 assert ( NULL == m_pContent && 0 == m_ContentSize );
AdamGreen 0:616601bde9fb 96
AdamGreen 0:616601bde9fb 97 // How big does the HTML content buffer need to be?
AdamGreen 0:616601bde9fb 98 va_start(ArgList, pFormat);
AdamGreen 0:616601bde9fb 99 RequiredBufferSize = vsnprintf(NULL, 0, pFormat, ArgList);
AdamGreen 0:616601bde9fb 100 va_end(ArgList);
AdamGreen 0:616601bde9fb 101
AdamGreen 0:616601bde9fb 102 // Check for error.
AdamGreen 0:616601bde9fb 103 if (RequiredBufferSize < 0)
AdamGreen 0:616601bde9fb 104 {
AdamGreen 0:616601bde9fb 105 return RequiredBufferSize;
AdamGreen 0:616601bde9fb 106 }
AdamGreen 0:616601bde9fb 107
AdamGreen 0:616601bde9fb 108 // Allow space for the NULL terminator.
AdamGreen 0:616601bde9fb 109 RequiredBufferSize++;
AdamGreen 0:616601bde9fb 110
AdamGreen 0:616601bde9fb 111 // Attempt to allocate a buffer of adequate size.
AdamGreen 0:616601bde9fb 112 m_pContent = (char*)malloc(RequiredBufferSize);
AdamGreen 0:616601bde9fb 113 if (!m_pContent)
AdamGreen 0:616601bde9fb 114 {
AdamGreen 0:616601bde9fb 115 return -1;
AdamGreen 0:616601bde9fb 116 }
AdamGreen 0:616601bde9fb 117 m_ContentSize = RequiredBufferSize;
AdamGreen 0:616601bde9fb 118 m_pCurrent = m_pContent;
AdamGreen 0:616601bde9fb 119
AdamGreen 0:616601bde9fb 120 // Place the HTML content into the newly allocated buffer.
AdamGreen 0:616601bde9fb 121 va_start(ArgList, pFormat);
AdamGreen 0:616601bde9fb 122 RequiredBufferSize = vsnprintf(m_pContent, m_ContentSize, pFormat, ArgList);
AdamGreen 0:616601bde9fb 123 va_end(ArgList);
AdamGreen 0:616601bde9fb 124
AdamGreen 0:616601bde9fb 125 // Make sure that nothing has changed out from underneath us.
AdamGreen 0:616601bde9fb 126 assert ( (int)m_ContentSize == RequiredBufferSize+1 );
AdamGreen 0:616601bde9fb 127
AdamGreen 0:616601bde9fb 128 return RequiredBufferSize + 1;
AdamGreen 0:616601bde9fb 129 }
AdamGreen 0:616601bde9fb 130
AdamGreen 0:616601bde9fb 131 // IHTTPRequestHandlerContext interface methods.
AdamGreen 0:616601bde9fb 132 virtual int BeginRequestHeaders()
AdamGreen 0:616601bde9fb 133 {
AdamGreen 0:616601bde9fb 134 // Ignore request headers.
AdamGreen 0:616601bde9fb 135 return 0;
AdamGreen 0:616601bde9fb 136 }
AdamGreen 0:616601bde9fb 137 virtual void WriteRequestHeader(const char* pHeaderName,
AdamGreen 0:616601bde9fb 138 const char* pHeaderValue)
AdamGreen 0:616601bde9fb 139 {
AdamGreen 0:616601bde9fb 140 // Unused parameters.
AdamGreen 0:616601bde9fb 141 (void)pHeaderName;
AdamGreen 0:616601bde9fb 142 (void)pHeaderValue;
AdamGreen 0:616601bde9fb 143
AdamGreen 0:616601bde9fb 144 assert ( FALSE );
AdamGreen 0:616601bde9fb 145 }
AdamGreen 0:616601bde9fb 146
AdamGreen 0:616601bde9fb 147 virtual void EndRequestHeaders()
AdamGreen 0:616601bde9fb 148 {
AdamGreen 0:616601bde9fb 149 assert ( FALSE );
AdamGreen 0:616601bde9fb 150 }
AdamGreen 0:616601bde9fb 151
AdamGreen 0:616601bde9fb 152 virtual int BeginRequestContent(size_t ContentSize)
AdamGreen 0:616601bde9fb 153 {
AdamGreen 0:616601bde9fb 154 // Ignore request content body.
AdamGreen 0:616601bde9fb 155 (void)ContentSize;
AdamGreen 0:616601bde9fb 156 return 0;
AdamGreen 0:616601bde9fb 157 }
AdamGreen 0:616601bde9fb 158
AdamGreen 0:616601bde9fb 159 virtual void WriteRequestContentBlock(const void* pBlockBuffer,
AdamGreen 0:616601bde9fb 160 size_t BlockBufferSize)
AdamGreen 0:616601bde9fb 161 {
AdamGreen 0:616601bde9fb 162 (void)pBlockBuffer;
AdamGreen 0:616601bde9fb 163 (void)BlockBufferSize;
AdamGreen 0:616601bde9fb 164 assert ( FALSE );
AdamGreen 0:616601bde9fb 165 }
AdamGreen 0:616601bde9fb 166
AdamGreen 0:616601bde9fb 167 virtual void EndRequestContent()
AdamGreen 0:616601bde9fb 168 {
AdamGreen 0:616601bde9fb 169 assert ( FALSE );
AdamGreen 0:616601bde9fb 170 }
AdamGreen 0:616601bde9fb 171
AdamGreen 0:616601bde9fb 172 virtual const char* GetStatusLine(size_t* pStatusLineLength)
AdamGreen 0:616601bde9fb 173 {
AdamGreen 0:616601bde9fb 174 *pStatusLineLength = m_StatusLineSize;
AdamGreen 0:616601bde9fb 175 return m_pStatusLine;
AdamGreen 0:616601bde9fb 176 }
AdamGreen 0:616601bde9fb 177
AdamGreen 0:616601bde9fb 178 virtual const char* GetResponseHeaders(size_t* pResponseHeaderLength)
AdamGreen 0:616601bde9fb 179 {
AdamGreen 0:616601bde9fb 180 *pResponseHeaderLength = m_HeaderSize;
AdamGreen 0:616601bde9fb 181 return m_pHeaders;
AdamGreen 0:616601bde9fb 182 }
AdamGreen 0:616601bde9fb 183
AdamGreen 0:616601bde9fb 184 virtual int BeginResponseContent()
AdamGreen 0:616601bde9fb 185 {
AdamGreen 0:616601bde9fb 186 assert (m_pContent);
AdamGreen 0:616601bde9fb 187
AdamGreen 0:616601bde9fb 188 // We have data to be sent back to client.
AdamGreen 0:616601bde9fb 189 m_pCurrent = m_pContent;
AdamGreen 0:616601bde9fb 190 return 1;
AdamGreen 0:616601bde9fb 191 }
AdamGreen 0:616601bde9fb 192
AdamGreen 0:616601bde9fb 193 virtual size_t ReadResponseContentBlock(char* pBuffer,
AdamGreen 0:616601bde9fb 194 size_t BytesToRead)
AdamGreen 0:616601bde9fb 195 {
AdamGreen 0:616601bde9fb 196 size_t BytesAlreadyRead = m_pCurrent - m_pContent;
AdamGreen 0:616601bde9fb 197 size_t BytesLeft = m_ContentSize - BytesAlreadyRead;
AdamGreen 0:616601bde9fb 198
AdamGreen 0:616601bde9fb 199 if (BytesToRead > BytesLeft)
AdamGreen 0:616601bde9fb 200 {
AdamGreen 0:616601bde9fb 201 BytesToRead = BytesLeft;
AdamGreen 0:616601bde9fb 202 }
AdamGreen 0:616601bde9fb 203
AdamGreen 0:616601bde9fb 204 memcpy(pBuffer, m_pCurrent, BytesToRead);
AdamGreen 0:616601bde9fb 205 m_pCurrent += BytesToRead;
AdamGreen 0:616601bde9fb 206
AdamGreen 0:616601bde9fb 207 return BytesToRead;
AdamGreen 0:616601bde9fb 208 }
AdamGreen 0:616601bde9fb 209
AdamGreen 0:616601bde9fb 210 virtual void EndResponseContent()
AdamGreen 0:616601bde9fb 211 {
AdamGreen 0:616601bde9fb 212 }
AdamGreen 0:616601bde9fb 213
AdamGreen 0:616601bde9fb 214 virtual void Release()
AdamGreen 0:616601bde9fb 215 {
AdamGreen 0:616601bde9fb 216 delete this;
AdamGreen 0:616601bde9fb 217 }
AdamGreen 0:616601bde9fb 218
AdamGreen 0:616601bde9fb 219 protected:
AdamGreen 0:616601bde9fb 220 char* m_pContent;
AdamGreen 0:616601bde9fb 221 const char* m_pCurrent;
AdamGreen 0:616601bde9fb 222 const char* m_pStatusLine;
AdamGreen 0:616601bde9fb 223 const char* m_pHeaders;
AdamGreen 0:616601bde9fb 224 size_t m_ContentSize;
AdamGreen 0:616601bde9fb 225 size_t m_StatusLineSize;
AdamGreen 0:616601bde9fb 226 size_t m_HeaderSize;
AdamGreen 0:616601bde9fb 227 };
AdamGreen 0:616601bde9fb 228
AdamGreen 0:616601bde9fb 229
AdamGreen 0:616601bde9fb 230 // Request handler context which pulls content from file handle.
AdamGreen 0:616601bde9fb 231 class CFileRequestHandlerContext : public IHTTPRequestHandlerContext
AdamGreen 0:616601bde9fb 232 {
AdamGreen 0:616601bde9fb 233 public:
AdamGreen 0:616601bde9fb 234 // Constructors / Destructors
AdamGreen 0:616601bde9fb 235 CFileRequestHandlerContext(FILE* pFile,
AdamGreen 0:616601bde9fb 236 const char* pStatusLine,
AdamGreen 0:616601bde9fb 237 size_t StatusLineSize,
AdamGreen 0:616601bde9fb 238 const char* pHeaders,
AdamGreen 0:616601bde9fb 239 size_t HeaderSize)
AdamGreen 0:616601bde9fb 240 {
AdamGreen 0:616601bde9fb 241 m_pFile = pFile;
AdamGreen 0:616601bde9fb 242 m_pStatusLine = pStatusLine;
AdamGreen 0:616601bde9fb 243 m_StatusLineSize = StatusLineSize;
AdamGreen 0:616601bde9fb 244 m_pHeaders = pHeaders;
AdamGreen 0:616601bde9fb 245 m_HeaderSize = HeaderSize;
AdamGreen 0:616601bde9fb 246 }
AdamGreen 0:616601bde9fb 247 ~CFileRequestHandlerContext()
AdamGreen 0:616601bde9fb 248 {
AdamGreen 0:616601bde9fb 249 // Make sure that file handle isn't being leaked.
AdamGreen 0:616601bde9fb 250 assert ( !m_pFile );
AdamGreen 0:616601bde9fb 251 m_pHeaders = NULL;
AdamGreen 0:616601bde9fb 252 m_pStatusLine = NULL;
AdamGreen 0:616601bde9fb 253 m_HeaderSize = 0;
AdamGreen 0:616601bde9fb 254 m_StatusLineSize = 0;
AdamGreen 0:616601bde9fb 255 }
AdamGreen 0:616601bde9fb 256
AdamGreen 0:616601bde9fb 257 // IHTTPRequestHandlerContext interface methods.
AdamGreen 0:616601bde9fb 258 virtual int BeginRequestHeaders()
AdamGreen 0:616601bde9fb 259 {
AdamGreen 0:616601bde9fb 260 // Ignore request headers.
AdamGreen 0:616601bde9fb 261 return 0;
AdamGreen 0:616601bde9fb 262 }
AdamGreen 0:616601bde9fb 263 virtual void WriteRequestHeader(const char* pHeaderName,
AdamGreen 0:616601bde9fb 264 const char* pHeaderValue)
AdamGreen 0:616601bde9fb 265 {
AdamGreen 0:616601bde9fb 266 (void)pHeaderName;
AdamGreen 0:616601bde9fb 267 (void)pHeaderValue;
AdamGreen 0:616601bde9fb 268 assert ( FALSE );
AdamGreen 0:616601bde9fb 269 }
AdamGreen 0:616601bde9fb 270
AdamGreen 0:616601bde9fb 271 virtual void EndRequestHeaders()
AdamGreen 0:616601bde9fb 272 {
AdamGreen 0:616601bde9fb 273 assert ( FALSE );
AdamGreen 0:616601bde9fb 274 }
AdamGreen 0:616601bde9fb 275
AdamGreen 0:616601bde9fb 276 virtual int BeginRequestContent(size_t ContentSize)
AdamGreen 0:616601bde9fb 277 {
AdamGreen 0:616601bde9fb 278 // Ignore request content body.
AdamGreen 0:616601bde9fb 279 (void)ContentSize;
AdamGreen 0:616601bde9fb 280 return 0;
AdamGreen 0:616601bde9fb 281 }
AdamGreen 0:616601bde9fb 282
AdamGreen 0:616601bde9fb 283 virtual void WriteRequestContentBlock(const void* pBlockBuffer,
AdamGreen 0:616601bde9fb 284 size_t BlockBufferSize)
AdamGreen 0:616601bde9fb 285 {
AdamGreen 0:616601bde9fb 286 (void)pBlockBuffer;
AdamGreen 0:616601bde9fb 287 (void)BlockBufferSize;
AdamGreen 0:616601bde9fb 288 assert ( FALSE );
AdamGreen 0:616601bde9fb 289 }
AdamGreen 0:616601bde9fb 290
AdamGreen 0:616601bde9fb 291 virtual void EndRequestContent()
AdamGreen 0:616601bde9fb 292 {
AdamGreen 0:616601bde9fb 293 assert ( FALSE );
AdamGreen 0:616601bde9fb 294 }
AdamGreen 0:616601bde9fb 295
AdamGreen 0:616601bde9fb 296 virtual const char* GetStatusLine(size_t* pStatusLineLength)
AdamGreen 0:616601bde9fb 297 {
AdamGreen 0:616601bde9fb 298 *pStatusLineLength = m_StatusLineSize;
AdamGreen 0:616601bde9fb 299 return m_pStatusLine;
AdamGreen 0:616601bde9fb 300 }
AdamGreen 0:616601bde9fb 301
AdamGreen 0:616601bde9fb 302 virtual const char* GetResponseHeaders(size_t* pResponseHeaderLength)
AdamGreen 0:616601bde9fb 303 {
AdamGreen 0:616601bde9fb 304 *pResponseHeaderLength = m_HeaderSize;
AdamGreen 0:616601bde9fb 305 return m_pHeaders;
AdamGreen 0:616601bde9fb 306 }
AdamGreen 0:616601bde9fb 307
AdamGreen 0:616601bde9fb 308 virtual int BeginResponseContent()
AdamGreen 0:616601bde9fb 309 {
AdamGreen 0:616601bde9fb 310 assert (m_pFile);
AdamGreen 0:616601bde9fb 311
AdamGreen 0:616601bde9fb 312 // We have data to be sent back to client.
AdamGreen 0:616601bde9fb 313 return 1;
AdamGreen 0:616601bde9fb 314 }
AdamGreen 0:616601bde9fb 315
AdamGreen 0:616601bde9fb 316 virtual size_t ReadResponseContentBlock(char* pBuffer,
AdamGreen 0:616601bde9fb 317 size_t BytesToRead)
AdamGreen 0:616601bde9fb 318 {
AdamGreen 0:616601bde9fb 319 return fread(pBuffer, 1, BytesToRead, m_pFile);
AdamGreen 0:616601bde9fb 320 }
AdamGreen 0:616601bde9fb 321
AdamGreen 0:616601bde9fb 322 virtual void EndResponseContent()
AdamGreen 0:616601bde9fb 323 {
AdamGreen 0:616601bde9fb 324 if (m_pFile)
AdamGreen 0:616601bde9fb 325 {
AdamGreen 0:616601bde9fb 326 fclose(m_pFile);
AdamGreen 0:616601bde9fb 327 m_pFile = NULL;
AdamGreen 0:616601bde9fb 328 }
AdamGreen 0:616601bde9fb 329 }
AdamGreen 0:616601bde9fb 330
AdamGreen 0:616601bde9fb 331 virtual void Release()
AdamGreen 0:616601bde9fb 332 {
AdamGreen 0:616601bde9fb 333 EndResponseContent();
AdamGreen 0:616601bde9fb 334 delete this;
AdamGreen 0:616601bde9fb 335 }
AdamGreen 0:616601bde9fb 336
AdamGreen 0:616601bde9fb 337 protected:
AdamGreen 0:616601bde9fb 338 FILE* m_pFile;
AdamGreen 0:616601bde9fb 339 const char* m_pStatusLine;
AdamGreen 0:616601bde9fb 340 const char* m_pHeaders;
AdamGreen 0:616601bde9fb 341 size_t m_StatusLineSize;
AdamGreen 0:616601bde9fb 342 size_t m_HeaderSize;
AdamGreen 0:616601bde9fb 343 };
AdamGreen 0:616601bde9fb 344
AdamGreen 0:616601bde9fb 345
AdamGreen 0:616601bde9fb 346 // Class to test application request handler overrides.
AdamGreen 0:616601bde9fb 347 class CWindMeterRequestHandler : public IHTTPRequestHandler
AdamGreen 0:616601bde9fb 348 {
AdamGreen 0:616601bde9fb 349 public:
AdamGreen 0:616601bde9fb 350 // Constructors/Destructors
AdamGreen 0:616601bde9fb 351 CWindMeterRequestHandler();
AdamGreen 0:616601bde9fb 352
AdamGreen 0:616601bde9fb 353 // IHTTPRequestHandler interface methods.
AdamGreen 0:616601bde9fb 354 virtual IHTTPRequestHandlerContext* HandleGetRequest(const char* pURI);
AdamGreen 0:616601bde9fb 355 virtual IHTTPRequestHandlerContext* HandleHeadRequest(const char* pURI);
AdamGreen 0:616601bde9fb 356 virtual IHTTPRequestHandlerContext* HandlePostRequest(const char* pURI);
AdamGreen 0:616601bde9fb 357 virtual IHTTPRequestHandlerContext* HandleBadRequest(const char* pRequest);
AdamGreen 0:616601bde9fb 358
AdamGreen 0:616601bde9fb 359 protected:
AdamGreen 0:616601bde9fb 360 IHTTPRequestHandlerContext* HandleRequest(const char* pURI);
AdamGreen 0:616601bde9fb 361 void MinuteTickerISR();
AdamGreen 0:616601bde9fb 362
AdamGreen 0:616601bde9fb 363 CWeatherMeters m_WeatherMeters;
AdamGreen 0:616601bde9fb 364 Ticker m_MinuteTicker;
AdamGreen 0:616601bde9fb 365 };
AdamGreen 0:616601bde9fb 366
AdamGreen 0:616601bde9fb 367
AdamGreen 0:616601bde9fb 368 CWindMeterRequestHandler::CWindMeterRequestHandler()
AdamGreen 0:616601bde9fb 369 : m_WeatherMeters(p9, p10, p15)
AdamGreen 0:616601bde9fb 370 {
AdamGreen 0:616601bde9fb 371 m_MinuteTicker.attach_us<CWindMeterRequestHandler>(this, &CWindMeterRequestHandler::MinuteTickerISR, 60000000);
AdamGreen 0:616601bde9fb 372 }
AdamGreen 0:616601bde9fb 373
AdamGreen 0:616601bde9fb 374
AdamGreen 0:616601bde9fb 375 void CWindMeterRequestHandler::MinuteTickerISR()
AdamGreen 0:616601bde9fb 376 {
AdamGreen 0:616601bde9fb 377 CWeatherMeters::SMeasurements Measurements;
AdamGreen 0:616601bde9fb 378
AdamGreen 0:616601bde9fb 379 m_WeatherMeters.GetMeasurements(&Measurements);
AdamGreen 0:616601bde9fb 380 }
AdamGreen 0:616601bde9fb 381
AdamGreen 0:616601bde9fb 382
AdamGreen 0:616601bde9fb 383 IHTTPRequestHandlerContext* CWindMeterRequestHandler::HandleGetRequest(const char* pURI)
AdamGreen 0:616601bde9fb 384 {
AdamGreen 0:616601bde9fb 385 return HandleRequest(pURI);
AdamGreen 0:616601bde9fb 386 }
AdamGreen 0:616601bde9fb 387
AdamGreen 0:616601bde9fb 388 IHTTPRequestHandlerContext* CWindMeterRequestHandler::HandleHeadRequest(const char* pURI)
AdamGreen 0:616601bde9fb 389 {
AdamGreen 0:616601bde9fb 390 return HandleRequest(pURI);
AdamGreen 0:616601bde9fb 391 }
AdamGreen 0:616601bde9fb 392
AdamGreen 0:616601bde9fb 393 IHTTPRequestHandlerContext* CWindMeterRequestHandler::HandleRequest(const char* pURI)
AdamGreen 0:616601bde9fb 394 {
AdamGreen 0:616601bde9fb 395 // Generate content for root home page.
AdamGreen 0:616601bde9fb 396 if (0 == strcmp(pURI, "/"))
AdamGreen 0:616601bde9fb 397 {
AdamGreen 0:616601bde9fb 398 CWeatherMeters::SMeasurements Measurements;
AdamGreen 0:616601bde9fb 399
AdamGreen 0:616601bde9fb 400 CPrintfGetRequestHandlerContext* pContext = new CPrintfGetRequestHandlerContext(g_OkStatusLine,
AdamGreen 0:616601bde9fb 401 sizeof(g_OkStatusLine)-1,
AdamGreen 0:616601bde9fb 402 g_HTMLHeaders,
AdamGreen 0:616601bde9fb 403 sizeof(g_HTMLHeaders)-1);
AdamGreen 0:616601bde9fb 404 if (!pContext)
AdamGreen 0:616601bde9fb 405 {
AdamGreen 0:616601bde9fb 406 return NULL;
AdamGreen 0:616601bde9fb 407 }
AdamGreen 0:616601bde9fb 408
AdamGreen 0:616601bde9fb 409 m_WeatherMeters.GetMeasurements(&Measurements);
AdamGreen 0:616601bde9fb 410 pContext->printf(g_HomePageHTML,
AdamGreen 0:616601bde9fb 411 Measurements.WindSpeed,
AdamGreen 0:616601bde9fb 412 Measurements.MaximumWindSpeed,
AdamGreen 0:616601bde9fb 413 Measurements.WindDirectionString,
AdamGreen 0:616601bde9fb 414 Measurements.Rainfall,
AdamGreen 0:616601bde9fb 415 "? minutes");
AdamGreen 0:616601bde9fb 416
AdamGreen 0:616601bde9fb 417 return pContext;
AdamGreen 0:616601bde9fb 418 }
AdamGreen 0:616601bde9fb 419
AdamGreen 0:616601bde9fb 420 return NULL;
AdamGreen 0:616601bde9fb 421 }
AdamGreen 0:616601bde9fb 422
AdamGreen 0:616601bde9fb 423 IHTTPRequestHandlerContext* CWindMeterRequestHandler::HandlePostRequest(const char* pURI)
AdamGreen 0:616601bde9fb 424 {
AdamGreen 0:616601bde9fb 425 if (0 == strcmp(pURI, "/reset.html"))
AdamGreen 0:616601bde9fb 426 {
AdamGreen 0:616601bde9fb 427 FILE* pFile;
AdamGreen 0:616601bde9fb 428
AdamGreen 0:616601bde9fb 429 m_WeatherMeters.Reset();
AdamGreen 0:616601bde9fb 430
AdamGreen 0:616601bde9fb 431 pFile = fopen("/" ROOT_FILESYSTEM_NAME "/reset.html", "r");
AdamGreen 0:616601bde9fb 432 if (pFile)
AdamGreen 0:616601bde9fb 433 {
AdamGreen 0:616601bde9fb 434 static const char StatusLine[] = "HTTP/1.0 200 OK\r\n";
AdamGreen 0:616601bde9fb 435 static const char Headers[] = "Content-type: text/html\r\n";
AdamGreen 0:616601bde9fb 436
AdamGreen 0:616601bde9fb 437 CFileRequestHandlerContext* pRequestHandlerContext = new CFileRequestHandlerContext(pFile,
AdamGreen 0:616601bde9fb 438 StatusLine,
AdamGreen 0:616601bde9fb 439 sizeof(StatusLine)-1,
AdamGreen 0:616601bde9fb 440 Headers,
AdamGreen 0:616601bde9fb 441 sizeof(Headers)-1);
AdamGreen 0:616601bde9fb 442 if (!pRequestHandlerContext)
AdamGreen 0:616601bde9fb 443 {
AdamGreen 0:616601bde9fb 444 fclose(pFile);
AdamGreen 0:616601bde9fb 445 }
AdamGreen 0:616601bde9fb 446
AdamGreen 0:616601bde9fb 447 return pRequestHandlerContext;
AdamGreen 0:616601bde9fb 448 }
AdamGreen 0:616601bde9fb 449 }
AdamGreen 0:616601bde9fb 450
AdamGreen 0:616601bde9fb 451 return NULL;
AdamGreen 0:616601bde9fb 452 }
AdamGreen 0:616601bde9fb 453
AdamGreen 0:616601bde9fb 454 IHTTPRequestHandlerContext* CWindMeterRequestHandler::HandleBadRequest(const char* pRequest)
AdamGreen 0:616601bde9fb 455 {
AdamGreen 0:616601bde9fb 456 // Unused parameters.
AdamGreen 0:616601bde9fb 457 (void)pRequest;
AdamGreen 0:616601bde9fb 458
AdamGreen 0:616601bde9fb 459 return NULL;
AdamGreen 0:616601bde9fb 460 }
AdamGreen 0:616601bde9fb 461
AdamGreen 0:616601bde9fb 462
AdamGreen 0:616601bde9fb 463
AdamGreen 0:616601bde9fb 464 int main()
AdamGreen 0:616601bde9fb 465 {
AdamGreen 0:616601bde9fb 466 int Result = 1;
AdamGreen 0:616601bde9fb 467 DigitalOut ProgressLED(LED1);
AdamGreen 0:616601bde9fb 468 Timer BlinkTimer;
AdamGreen 0:616601bde9fb 469 static SNetwork Network;
AdamGreen 0:616601bde9fb 470 static HTTP_MEM_POSITION CHTTPServer HTTPServer;
AdamGreen 0:616601bde9fb 471 static CWindMeterRequestHandler WindMeterRequestHandler;
AdamGreen 0:616601bde9fb 472
AdamGreen 0:616601bde9fb 473 printf("\r\n" APPLICATION_NAME "\r\n");
AdamGreen 0:616601bde9fb 474
AdamGreen 0:616601bde9fb 475 // Create the SD based file system.
AdamGreen 0:616601bde9fb 476 static SDFileSystem sd(p5, p6, p7, p8, "SD");
AdamGreen 0:616601bde9fb 477
AdamGreen 0:616601bde9fb 478 // Initialize the ethernet driver and lwIP network stack.
AdamGreen 0:616601bde9fb 479 Result = SNetwork_Init(&Network,
AdamGreen 0:616601bde9fb 480 HTTP_STATIC_IP_ADDRESS,
AdamGreen 0:616601bde9fb 481 HTTP_STATIC_SUBNET_MASK,
AdamGreen 0:616601bde9fb 482 HTTP_STATIC_GATEWAY_ADDRESS,
AdamGreen 0:616601bde9fb 483 HTTP_HOST_NAME);
AdamGreen 0:616601bde9fb 484 if (Result)
AdamGreen 0:616601bde9fb 485 {
AdamGreen 0:616601bde9fb 486 error("Failed to initialize network.\r\n");
AdamGreen 0:616601bde9fb 487 }
AdamGreen 0:616601bde9fb 488
AdamGreen 0:616601bde9fb 489 // Register test request handler for handling HTTP requests.
AdamGreen 0:616601bde9fb 490 HTTPServer.AttachRequestHandler(&WindMeterRequestHandler);
AdamGreen 0:616601bde9fb 491
AdamGreen 0:616601bde9fb 492 // Setup a HTTP server to listen on port 80.
AdamGreen 0:616601bde9fb 493 Result = HTTPServer.Bind(ROOT_FILESYSTEM_NAME, HTTP_SERVER_NAME, HTTP_PORT);
AdamGreen 0:616601bde9fb 494 if (Result)
AdamGreen 0:616601bde9fb 495 {
AdamGreen 0:616601bde9fb 496 error("Failed to initialize for receiving HTTP requests.\r\n");
AdamGreen 0:616601bde9fb 497 }
AdamGreen 0:616601bde9fb 498
AdamGreen 0:616601bde9fb 499 // Enter the main application loop.
AdamGreen 0:616601bde9fb 500 BlinkTimer.start();
AdamGreen 0:616601bde9fb 501 while(1)
AdamGreen 0:616601bde9fb 502 {
AdamGreen 0:616601bde9fb 503 // Allow the network stack to do its thing. It will callback into the
AdamGreen 0:616601bde9fb 504 // application callbacks as necessary to complete the actual work
AdamGreen 0:616601bde9fb 505 // required for a simple HTTP server implementation.
AdamGreen 0:616601bde9fb 506 SNetwork_Poll(&Network);
AdamGreen 0:616601bde9fb 507
AdamGreen 0:616601bde9fb 508 // Blink the progress LED once each half second to let user know that
AdamGreen 0:616601bde9fb 509 // we haven't hung.
AdamGreen 0:616601bde9fb 510 if (BlinkTimer.read_ms() > 500)
AdamGreen 0:616601bde9fb 511 {
AdamGreen 0:616601bde9fb 512 BlinkTimer.reset();
AdamGreen 0:616601bde9fb 513 ProgressLED = !ProgressLED;
AdamGreen 0:616601bde9fb 514 }
AdamGreen 0:616601bde9fb 515 }
AdamGreen 0:616601bde9fb 516 }
AdamGreen 0:616601bde9fb 517
AdamGreen 0:616601bde9fb 518