webport_8c-source.html

针对AVR单片机开发的嵌入式操作系统

00302     <span class="comment">/*</span>
00303 <span class="comment">     * If the Nut/OS libraries had been compiled and linked with</span>
00304 <span class="comment">     * NUTDEBUG defined, we can switch on additional trace output.</span>
00305 <span class="comment">     */</span>
00306 <span class="preprocessor">#ifdef NUTDEBUG</span>
00307 <span class="preprocessor"></span>    NutTraceTcp(stdout, 0);
00308     NutTraceOs(stdout, 0);
00309     NutTraceHeap(stdout, 0);
00310 <span class="preprocessor">#endif</span>
00311 <span class="preprocessor"></span>
00312     <span class="comment">/*</span>
00313 <span class="comment">     * During debugging, some delay during startup is quite helpful.</span>
00314 <span class="comment">     */</span>
00315     NutSleep(2000);
00316 <span class="preprocessor">#endif</span>
00317 <span class="preprocessor"></span>
00318     <span class="comment">/*</span>
00319 <span class="comment">     * Register the Ethernet controller. Nut/OS supports different</span>
00320 <span class="comment">     * controllers. We use DEV_ETHER here, which should have been </span>
00321 <span class="comment">     * defined in one of the include files, which fits our real hardware.</span>
00322 <span class="comment">     */</span>
00323     <span class="keywordflow">if</span> (NutRegisterDevice(&amp;DEV_ETHER, 0x8300, 5)) {
00324 <span class="preprocessor">#ifdef WP_STATUSOUT</span>
00325 <span class="preprocessor"></span>        puts(<span class="stringliteral">"Registering NIC failed"</span>);
00326 <span class="preprocessor">#endif</span>
00327 <span class="preprocessor"></span>    }
00328 
00329     <span class="comment">/*</span>
00330 <span class="comment">     * LAN configuration using values in non-volatile memory or </span>
00331 <span class="comment">     * DHCP/ARP. We are ready to wait upto 15 seconds for a </span>
00332 <span class="comment">     * response from the DHCP server. If it fails, use hardcoded </span>
00333 <span class="comment">     * values.</span>
00334 <span class="comment">     *</span>
00335 <span class="comment">     * The whole process is done in three steps.</span>
00336 <span class="comment">     *</span>
00337 <span class="comment">     * 1. Call NutDhcpIfConfig() without specifying a MAC address</span>
00338 <span class="comment">     *    will try read all values from non-volatile memory. If</span>
00339 <span class="comment">     *    there are no values available, it will immediately</span>
00340 <span class="comment">     *    return an error.</span>
00341 <span class="comment">     *</span>
00342 <span class="comment">     * 2. If step 1 fails, call NutDhcpIfConfig() with a hard coded </span>
00343 <span class="comment">     *    MAC address. The routine will use this MAC address to query </span>
00344 <span class="comment">     *    a DHCP server for its IP configuration. If it succeeds, the </span>
00345 <span class="comment">     *    MAC address and the values received from DHCP will be </span>
00346 <span class="comment">     *    stored in non-volatile memory and used in step 1 during the</span>
00347 <span class="comment">     *    next reboot. Otherwise the call will return an error.</span>
00348 <span class="comment">     *</span>
00349 <span class="comment">     * 3. If step 2 fails, call NutNetIfConfig() with hard coded</span>
00350 <span class="comment">     *    MAC address and IP configuration. This fixed values will</span>
00351 <span class="comment">     *    be stored in non-volatile memory and on the next reboot,</span>
00352 <span class="comment">     *    these values will be used in step 1.</span>
00353 <span class="comment">     *</span>
00354 <span class="comment">     * Note, that DHCP is only used, if the network configuration</span>
00355 <span class="comment">     * stored in non-volatile memory doesn't contain a fixed IP</span>
00356 <span class="comment">     * address. If a fixed value is used once, Nut/OS will store</span>
00357 <span class="comment">     * it in non-volatile memory and never use DHCP unless this</span>
00358 <span class="comment">     * fixed values are removed from volatile memory again.</span>
00359 <span class="comment">     */</span>
00360 <span class="preprocessor">#ifdef WP_STATUSOUT</span>
00361 <span class="preprocessor"></span>    printf(<span class="stringliteral">"\nTry stored configuration..."</span>);
00362 <span class="preprocessor">#endif</span>
00363 <span class="preprocessor"></span>    <span class="keywordflow">if</span> (NutDhcpIfConfig(<span class="stringliteral">"eth0"</span>, 0, 10000)) {
00364         u_char mac[] = { <a class="code" href="group__xg_w_p_defs.html#ga0">MYMAC</a> };
00365 <span class="preprocessor">#ifdef WP_STATUSOUT</span>
00366 <span class="preprocessor"></span>        printf(<span class="stringliteral">"failed\nTry DHCP..."</span>);
00367 <span class="preprocessor">#endif</span>
00368 <span class="preprocessor"></span>        <span class="keywordflow">if</span> (NutDhcpIfConfig(<span class="stringliteral">"eth0"</span>, mac, 10000)) {
00369 <span class="preprocessor">#ifdef WP_STATUSOUT</span>
00370 <span class="preprocessor"></span>            printf(<span class="stringliteral">"failed\nUse fixed configuration..."</span>);
00371 <span class="preprocessor">#endif</span>
00372 <span class="preprocessor"></span>            <span class="keywordflow">if</span> (NutNetIfConfig(<span class="stringliteral">"eth0"</span>, mac, inet_addr(<a class="code" href="group__xg_w_p_defs.html#ga1">MYIP</a>), inet_addr(<a class="code" href="group__xg_w_p_defs.html#ga2">MYMASK</a>))) {
00373 <span class="preprocessor">#ifdef WP_STATUSOUT</span>
00374 <span class="preprocessor"></span>                puts(<span class="stringliteral">"failed\nWhere is the NIC?"</span>);
00375 <span class="preprocessor">#endif</span>
00376 <span class="preprocessor"></span>                <a class="code" href="group__xg_web_port.html#ga3">JUMP_RESET</a>;
00377             }
00378             <span class="comment">/* If not in a local network, we must also call </span>
00379 <span class="comment">               NutIpRouteAdd() to configure the routing. */</span>
00380         }
00381     }
00382 <span class="preprocessor">#ifdef WP_STATUSOUT</span>
00383 <span class="preprocessor"></span>    puts(<span class="stringliteral">"OK"</span>);
00384     <span class="keywordflow">if</span> (confnet.cdn_cip_addr)
00385         printf(<span class="stringliteral">"IP addr: %s\n"</span>, inet_ntoa(confnet.cdn_cip_addr));
00386     <span class="keywordflow">else</span>
00387         printf(<span class="stringliteral">"IP addr: %s\n"</span>, inet_ntoa(confnet.cdn_ip_addr));
00388     printf(<span class="stringliteral">"IP mask: %s\n"</span>, inet_ntoa(confnet.cdn_ip_mask));
00389     printf(<span class="stringliteral">"IP gate: %s\n"</span>, inet_ntoa(confnet.cdn_gateway));
00390 <span class="preprocessor">#endif</span>
00391 <span class="preprocessor"></span>
00392     <span class="comment">/*</span>
00393 <span class="comment">     * Register our device for the file system. If we intend to use </span>
00394 <span class="comment">     * another file system, we need to register it by calling</span>
00395 <span class="comment">     * NutRegisterHttpRoot(). If none is registered, the UROM</span>
00396 <span class="comment">     * file system will be used by default.</span>
00397 <span class="comment">     */</span>
00398     NutRegisterDevice(&amp;devUrom, 0, 0);
00399 
00400     <span class="comment">/*</span>
00401 <span class="comment">     * Register our CGI routines. This is required to inform the</span>
00402 <span class="comment">     * HTTP helper routines, which corresponding routine has to</span>
00403 <span class="comment">     * be called.</span>
00404 <span class="comment">     */</span>
00405     <span class="keywordflow">if</span> (NutRegisterCgi(<a class="code" href="group__xg_w_p_defs.html#ga8">PORT_CONTROL_CGI</a>, <a class="code" href="group__xg_c_g_i.html#ga10">CpuPortControl</a>))
00406         <a class="code" href="group__xg_web_port.html#ga3">JUMP_RESET</a>;
00407     <span class="keywordflow">if</span> (NutRegisterCgi(<a class="code" href="group__xg_w_p_defs.html#ga9">PORT_STATUS_CGI</a>, <a class="code" href="group__xg_c_g_i.html#ga11">CpuPortStatus</a>))
00408         <a class="code" href="group__xg_web_port.html#ga3">JUMP_RESET</a>;
00409     <span class="keywordflow">if</span> (NutRegisterCgi(<a class="code" href="group__xg_w_p_defs.html#ga10">RELAY_CONTROL_CGI</a>, <a class="code" href="group__xg_c_g_i.html#ga12">SpiRelayControl</a>))
00410         <a class="code" href="group__xg_web_port.html#ga3">JUMP_RESET</a>;
00411     <span class="keywordflow">if</span> (NutRegisterCgi(<a class="code" href="group__xg_w_p_defs.html#ga11">OPTO_STATUS_CGI</a>, <a class="code" href="group__xg_c_g_i.html#ga13">SpiOptoStatus</a>))
00412         <a class="code" href="group__xg_web_port.html#ga3">JUMP_RESET</a>;
00413     <span class="keywordflow">if</span> (NutRegisterCgi(<a class="code" href="group__xg_w_p_defs.html#ga12">CHARON_CONTROL_CGI</a>, <a class="code" href="group__xg_c_g_i.html#ga14">CharonLedControl</a>))
00414         <a class="code" href="group__xg_web_port.html#ga3">JUMP_RESET</a>;
00415     <span class="keywordflow">if</span> (NutRegisterCgi(<a class="code" href="group__xg_w_p_defs.html#ga13">CHARON_STATUS_CGI</a>, <a class="code" href="group__xg_c_g_i.html#ga15">CharonSwitchStatus</a>))
00416         <a class="code" href="group__xg_web_port.html#ga3">JUMP_RESET</a>;
00417 
00418     <span class="comment">/*</span>
00419 <span class="comment">     * Start a defined number of concurrent background threads. The more </span>
00420 <span class="comment">     * threads we have running, the more connections we can handle </span>
00421 <span class="comment">     * concurrently. However, each thread occupies some additional RAM.</span>
00422 <span class="comment">     */</span>
00423     <span class="keywordflow">for</span> (i = 0; i &lt; <a class="code" href="group__xg_w_p_defs.html#ga6">NUM_HTTP_THREADS</a> - 1; i++) {
00424         <span class="comment">/*</span>
00425 <span class="comment">         * Not really required here, but we give each thread a unique</span>
00426 <span class="comment">         * name.</span>
00427 <span class="comment">         */</span>
00428         <span class="keywordtype">char</span> *thname = <span class="stringliteral">"httpd0"</span>;
00429         thname[5] = <span class="charliteral">'0'</span> + i;
00430         NutThreadCreate(thname, <a class="code" href="group__xg_web_port.html#ga1">ServiceThread</a>, 0, <a class="code" href="group__xg_w_p_defs.html#ga7">HTTP_THREAD_STACK</a>);
00431     }
00432 
00433     <span class="comment">/*</span>
00434 <span class="comment">     * Finally we use the main thread too for handling HTTP request.</span>
00435 <span class="comment">     * There's nothing else we can do.</span>
00436 <span class="comment">     */</span>
00437     <span class="keywordflow">for</span> (;;) {
00438         <a class="code" href="group__xg_web_port.html#ga0">Service</a>();
00439     }
00440 
00441     <span class="comment">/*</span>
00442 <span class="comment">     * This point is never reached. Nut/OS applications are started</span>
00443 <span class="comment">     * once and continue running forever.</span>
00444 <span class="comment">     */</span>
00445 }
00446 <span class="comment"></span>
00447 <span class="comment">/*@}*/</span>
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