main.c

00001 /**
00002  * @file main.c
00003  * @brief Main routine
00004  *
00005  * @section License
00006  *
00007  * Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.
00008  *
00009  * This program is free software; you can redistribute it and/or
00010  * modify it under the terms of the GNU General Public License
00011  * as published by the Free Software Foundation; either version 2
00012  * of the License, or (at your option) any later version.
00013  *
00014  * This program is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017  * GNU General Public License for more details.
00018  *
00019  * You should have received a copy of the GNU General Public License
00020  * along with this program; if not, write to the Free Software Foundation,
00021  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00022  *
00023  * @author Oryx Embedded SARL (www.oryx-embedded.com)
00024  * @version 1.7.6
00025  **/
00026 
00027 //Dependencies
00028 #include <stdlib.h>
00029 #include "stm32f7xx.h"
00030 #include "stm32f7xx_hal.h"
00031 #include "stm32f7xx_nucleo_144.h"
00032 #include "os_port.h"
00033 #include "core/net.h"
00034 #include "drivers/stm32f7xx_eth.h"
00035 #include "drivers/lan8742.h"
00036 #include "dhcp/dhcp_client.h"
00037 #include "ipv6/slaac.h"
00038 #include "http/http_server.h"
00039 #include "http/mime.h"
00040 #include "path.h"
00041 #include "date_time.h"
00042 #include "resource_manager.h"
00043 #include "debug.h"
00044 
00045 //Application configuration
00046 #define APP_MAC_ADDR "00-AB-CD-EF-07-46"
00047 
00048 #define APP_USE_DHCP ENABLED
00049 #define APP_IPV4_HOST_ADDR "192.168.0.20"
00050 #define APP_IPV4_SUBNET_MASK "255.255.255.0"
00051 #define APP_IPV4_DEFAULT_GATEWAY "192.168.0.254"
00052 #define APP_IPV4_PRIMARY_DNS "8.8.8.8"
00053 #define APP_IPV4_SECONDARY_DNS "8.8.4.4"
00054 
00055 #define APP_USE_SLAAC ENABLED
00056 #define APP_IPV6_LINK_LOCAL_ADDR "fe80::746"
00057 #define APP_IPV6_PREFIX "2001:db8::"
00058 #define APP_IPV6_PREFIX_LENGTH 64
00059 #define APP_IPV6_GLOBAL_ADDR "2001:db8::746"
00060 #define APP_IPV6_ROUTER "fe80::1"
00061 #define APP_IPV6_PRIMARY_DNS "2001:4860:4860::8888"
00062 #define APP_IPV6_SECONDARY_DNS "2001:4860:4860::8844"
00063 
00064 #define APP_HTTP_MAX_CONNECTIONS 8
00065 
00066 //Global variables
00067 DhcpClientSettings dhcpClientSettings;
00068 DhcpClientContext dhcpClientContext;
00069 SlaacSettings slaacSettings;
00070 SlaacContext slaacContext;
00071 HttpServerSettings httpServerSettings;
00072 HttpServerContext httpServerContext;
00073 HttpConnection httpConnections[APP_HTTP_MAX_CONNECTIONS];
00074 
00075 //Forward declaration of functions
00076 error_t httpServerCgiCallback(HttpConnection *connection,
00077    const char_t *param);
00078 
00079 error_t httpServerUriNotFoundCallback(HttpConnection *connection,
00080    const char_t *uri);
00081 
00082 
00083 /**
00084  * @brief System clock configuration
00085  **/
00086 
00087 void SystemClock_Config(void)
00088 {
00089    RCC_OscInitTypeDef RCC_OscInitStruct;
00090    RCC_ClkInitTypeDef RCC_ClkInitStruct;
00091 
00092    //Enable Power Control clock
00093    __HAL_RCC_PWR_CLK_ENABLE();
00094 
00095    //Enable HSE Oscillator and activate PLL with HSE as source
00096    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
00097    RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
00098    RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
00099    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
00100    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
00101    RCC_OscInitStruct.PLL.PLLM = 8;
00102    RCC_OscInitStruct.PLL.PLLN = 432;
00103    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
00104    RCC_OscInitStruct.PLL.PLLQ = 9;
00105    HAL_RCC_OscConfig(&RCC_OscInitStruct);
00106 
00107    //Enable overdrive mode
00108    HAL_PWREx_EnableOverDrive();
00109 
00110    //Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
00111    //clocks dividers
00112    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
00113    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
00114    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
00115    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
00116    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
00117    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);
00118 }
00119 
00120 
00121 /**
00122  * @brief MPU configuration
00123  **/
00124 
00125 void MPU_Config(void)
00126 {
00127    MPU_Region_InitTypeDef MPU_InitStruct;
00128 
00129    //Disable MPU
00130    HAL_MPU_Disable();
00131 
00132    //SRAM
00133    MPU_InitStruct.Enable = MPU_REGION_ENABLE;
00134    MPU_InitStruct.Number = MPU_REGION_NUMBER0;
00135    MPU_InitStruct.BaseAddress = 0x20000000;
00136    MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
00137    MPU_InitStruct.SubRegionDisable = 0;
00138    MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
00139    MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
00140    MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
00141    MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
00142    MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
00143    MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
00144    HAL_MPU_ConfigRegion(&MPU_InitStruct);
00145 
00146    //SRAM2
00147    MPU_InitStruct.Enable = MPU_REGION_ENABLE;
00148    MPU_InitStruct.Number = MPU_REGION_NUMBER1;
00149    MPU_InitStruct.BaseAddress = 0x2004C000;
00150    MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;
00151    MPU_InitStruct.SubRegionDisable = 0;
00152    MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
00153    MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
00154    MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
00155    MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
00156    MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
00157    MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
00158    HAL_MPU_ConfigRegion(&MPU_InitStruct);
00159 
00160    //Enable MPU
00161    HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
00162 }
00163 
00164 
00165 /**
00166  * @brief LED blinking task
00167  **/
00168 
00169 void blinkTask(void *param)
00170 {
00171    //Endless loop
00172    while(1)
00173    {
00174       BSP_LED_On(LED1);
00175       osDelayTask(100);
00176       BSP_LED_Off(LED1);
00177       osDelayTask(900);
00178    }
00179 }
00180 
00181 
00182 /**
00183  * @brief Main entry point
00184  * @return Unused value
00185  **/
00186 
00187 int_t main(void)
00188 {
00189    error_t error;
00190    NetInterface *interface;
00191    OsTask *task;
00192    MacAddr macAddr;
00193 #if (APP_USE_DHCP == DISABLED)
00194    Ipv4Addr ipv4Addr;
00195 #endif
00196 #if (APP_USE_SLAAC == DISABLED)
00197    Ipv6Addr ipv6Addr;
00198 #endif
00199 
00200    //MPU configuration
00201    MPU_Config();
00202    //HAL library initialization
00203    HAL_Init();
00204    //Configure the system clock
00205    SystemClock_Config();
00206 
00207    //Enable I-cache and D-cache
00208    SCB_EnableICache();
00209    SCB_EnableDCache();
00210 
00211    //Initialize kernel
00212    osInitKernel();
00213    //Configure debug UART
00214    debugInit(115200);
00215 
00216    //Start-up message
00217    TRACE_INFO("\r\n");
00218    TRACE_INFO("**********************************\r\n");
00219    TRACE_INFO("*** CycloneTCP Web Server Demo ***\r\n");
00220    TRACE_INFO("**********************************\r\n");
00221    TRACE_INFO("Copyright: 2010-2017 Oryx Embedded SARL\r\n");
00222    TRACE_INFO("Compiled: %s %s\r\n", __DATE__, __TIME__);
00223    TRACE_INFO("Target: STM32F746\r\n");
00224    TRACE_INFO("\r\n");
00225 
00226    //LED configuration
00227    BSP_LED_Init(LED1);
00228    BSP_LED_Init(LED2);
00229    BSP_LED_Init(LED3);
00230 
00231    //Clear LEDs
00232    BSP_LED_Off(LED1);
00233    BSP_LED_Off(LED2);
00234    BSP_LED_Off(LED3);
00235 
00236    //Initialize user button
00237    BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);
00238 
00239    //TCP/IP stack initialization
00240    error = netInit();
00241    //Any error to report?
00242    if(error)
00243    {
00244       //Debug message
00245       TRACE_ERROR("Failed to initialize TCP/IP stack!\r\n");
00246    }
00247 
00248    //Configure the first Ethernet interface
00249    interface = &netInterface[0];
00250 
00251    //Set interface name
00252    netSetInterfaceName(interface, "eth0");
00253    //Set host name
00254    netSetHostname(interface, "WebServerDemo");
00255    //Select the relevant network adapter
00256    netSetDriver(interface, &stm32f7xxEthDriver);
00257    netSetPhyDriver(interface, &lan8742PhyDriver);
00258    //Set host MAC address
00259    macStringToAddr(APP_MAC_ADDR, &macAddr);
00260    netSetMacAddr(interface, &macAddr);
00261 
00262    //Initialize network interface
00263    error = netConfigInterface(interface);
00264    //Any error to report?
00265    if(error)
00266    {
00267       //Debug message
00268       TRACE_ERROR("Failed to configure interface %s!\r\n", interface->name);
00269    }
00270 
00271 #if (IPV4_SUPPORT == ENABLED)
00272 #if (APP_USE_DHCP == ENABLED)
00273    //Get default settings
00274    dhcpClientGetDefaultSettings(&dhcpClientSettings);
00275    //Set the network interface to be configured by DHCP
00276    dhcpClientSettings.interface = interface;
00277    //Disable rapid commit option
00278    dhcpClientSettings.rapidCommit = FALSE;
00279 
00280    //DHCP client initialization
00281    error = dhcpClientInit(&dhcpClientContext, &dhcpClientSettings);
00282    //Failed to initialize DHCP client?
00283    if(error)
00284    {
00285       //Debug message
00286       TRACE_ERROR("Failed to initialize DHCP client!\r\n");
00287    }
00288 
00289    //Start DHCP client
00290    error = dhcpClientStart(&dhcpClientContext);
00291    //Failed to start DHCP client?
00292    if(error)
00293    {
00294       //Debug message
00295       TRACE_ERROR("Failed to start DHCP client!\r\n");
00296    }
00297 #else
00298    //Set IPv4 host address
00299    ipv4StringToAddr(APP_IPV4_HOST_ADDR, &ipv4Addr);
00300    ipv4SetHostAddr(interface, ipv4Addr);
00301 
00302    //Set subnet mask
00303    ipv4StringToAddr(APP_IPV4_SUBNET_MASK, &ipv4Addr);
00304    ipv4SetSubnetMask(interface, ipv4Addr);
00305 
00306    //Set default gateway
00307    ipv4StringToAddr(APP_IPV4_DEFAULT_GATEWAY, &ipv4Addr);
00308    ipv4SetDefaultGateway(interface, ipv4Addr);
00309 
00310    //Set primary and secondary DNS servers
00311    ipv4StringToAddr(APP_IPV4_PRIMARY_DNS, &ipv4Addr);
00312    ipv4SetDnsServer(interface, 0, ipv4Addr);
00313    ipv4StringToAddr(APP_IPV4_SECONDARY_DNS, &ipv4Addr);
00314    ipv4SetDnsServer(interface, 1, ipv4Addr);
00315 #endif
00316 #endif
00317 
00318 #if (IPV6_SUPPORT == ENABLED)
00319 #if (APP_USE_SLAAC == ENABLED)
00320    //Get default settings
00321    slaacGetDefaultSettings(&slaacSettings);
00322    //Set the network interface to be configured
00323    slaacSettings.interface = interface;
00324 
00325    //SLAAC initialization
00326    error = slaacInit(&slaacContext, &slaacSettings);
00327    //Failed to initialize SLAAC?
00328    if(error)
00329    {
00330       //Debug message
00331       TRACE_ERROR("Failed to initialize SLAAC!\r\n");
00332    }
00333 
00334    //Start IPv6 address autoconfiguration process
00335    error = slaacStart(&slaacContext);
00336    //Failed to start SLAAC process?
00337    if(error)
00338    {
00339       //Debug message
00340       TRACE_ERROR("Failed to start SLAAC!\r\n");
00341    }
00342 #else
00343    //Set link-local address
00344    ipv6StringToAddr(APP_IPV6_LINK_LOCAL_ADDR, &ipv6Addr);
00345    ipv6SetLinkLocalAddr(interface, &ipv6Addr);
00346 
00347    //Set IPv6 prefix
00348    ipv6StringToAddr(APP_IPV6_PREFIX, &ipv6Addr);
00349    ipv6SetPrefix(interface, 0, &ipv6Addr, APP_IPV6_PREFIX_LENGTH);
00350 
00351    //Set global address
00352    ipv6StringToAddr(APP_IPV6_GLOBAL_ADDR, &ipv6Addr);
00353    ipv6SetGlobalAddr(interface, 0, &ipv6Addr);
00354 
00355    //Set default router
00356    ipv6StringToAddr(APP_IPV6_ROUTER, &ipv6Addr);
00357    ipv6SetDefaultRouter(interface, 0, &ipv6Addr);
00358 
00359    //Set primary and secondary DNS servers
00360    ipv6StringToAddr(APP_IPV6_PRIMARY_DNS, &ipv6Addr);
00361    ipv6SetDnsServer(interface, 0, &ipv6Addr);
00362    ipv6StringToAddr(APP_IPV6_SECONDARY_DNS, &ipv6Addr);
00363    ipv6SetDnsServer(interface, 1, &ipv6Addr);
00364 #endif
00365 #endif
00366 
00367    //Get default settings
00368    httpServerGetDefaultSettings(&httpServerSettings);
00369    //Bind HTTP server to the desired interface
00370    httpServerSettings.interface = &netInterface[0];
00371    //Listen to port 80
00372    httpServerSettings.port = HTTP_PORT;
00373    //Client connections
00374    httpServerSettings.maxConnections = APP_HTTP_MAX_CONNECTIONS;
00375    httpServerSettings.connections = httpConnections;
00376    //Specify the server's root directory
00377    strcpy(httpServerSettings.rootDirectory, "/www/");
00378    //Set default home page
00379    strcpy(httpServerSettings.defaultDocument, "index.shtm");
00380    //Callback functions
00381    httpServerSettings.cgiCallback = httpServerCgiCallback;
00382    httpServerSettings.uriNotFoundCallback = httpServerUriNotFoundCallback;
00383 
00384    //HTTP server initialization
00385    error = httpServerInit(&httpServerContext, &httpServerSettings);
00386    //Failed to initialize HTTP server?
00387    if(error)
00388    {
00389       //Debug message
00390       TRACE_ERROR("Failed to initialize HTTP server!\r\n");
00391    }
00392 
00393    //Start HTTP server
00394    error = httpServerStart(&httpServerContext);
00395    //Failed to start HTTP server?
00396    if(error)
00397    {
00398       //Debug message
00399       TRACE_ERROR("Failed to start HTTP server!\r\n");
00400    }
00401 
00402    //Create a task to blink the LED
00403    task = osCreateTask("Blink", blinkTask, NULL, 500, OS_TASK_PRIORITY_NORMAL);
00404    //Failed to create the task?
00405    if(task == OS_INVALID_HANDLE)
00406    {
00407       //Debug message
00408       TRACE_ERROR("Failed to create task!\r\n");
00409    }
00410 
00411    //Start the execution of tasks
00412    osStartKernel();
00413 
00414    //This function should never return
00415    return 0;
00416 }
00417 
00418 
00419 /**
00420  * @brief CGI callback function
00421  * @param[in] connection Handle referencing a client connection
00422  * @param[in] param NULL-terminated string that contains the CGI parameter
00423  * @return Error code
00424  **/
00425 
00426 error_t httpServerCgiCallback(HttpConnection *connection,
00427    const char_t *param)
00428 {
00429    static uint_t pageCounter = 0;
00430    uint_t length;
00431    MacAddr macAddr;
00432 #if (IPV4_SUPPORT == ENABLED)
00433    Ipv4Addr ipv4Addr;
00434 #endif
00435 #if (IPV6_SUPPORT == ENABLED)
00436    uint_t n;
00437    Ipv6Addr ipv6Addr;
00438 #endif
00439 
00440    //Underlying network interface
00441    NetInterface *interface = connection->socket->interface;
00442 
00443    //Check parameter name
00444    if(!strcasecmp(param, "PAGE_COUNTER"))
00445    {
00446       pageCounter++;
00447       sprintf(connection->buffer, "%u time%s", pageCounter, (pageCounter >= 2) ? "s" : "");
00448    }
00449    else if(!strcasecmp(param, "BOARD_NAME"))
00450    {
00451       strcpy(connection->buffer, "Nucleo-F746ZG");
00452    }
00453    else if(!strcasecmp(param, "SYSTEM_TIME"))
00454    {
00455       systime_t time = osGetSystemTime();
00456       formatSystemTime(time, connection->buffer);
00457    }
00458    else if(!strcasecmp(param, "MAC_ADDR"))
00459    {
00460       netGetMacAddr(interface, &macAddr);
00461       macAddrToString(&macAddr, connection->buffer);
00462    }
00463    else if(!strcasecmp(param, "IPV4_ADDR"))
00464    {
00465       ipv4GetHostAddr(interface, &ipv4Addr);
00466       ipv4AddrToString(ipv4Addr, connection->buffer);
00467    }
00468    else if(!strcasecmp(param, "SUBNET_MASK"))
00469    {
00470       ipv4GetSubnetMask(interface, &ipv4Addr);
00471       ipv4AddrToString(ipv4Addr, connection->buffer);
00472    }
00473    else if(!strcasecmp(param, "DEFAULT_GATEWAY"))
00474    {
00475       ipv4GetDefaultGateway(interface, &ipv4Addr);
00476       ipv4AddrToString(ipv4Addr, connection->buffer);
00477    }
00478    else if(!strcasecmp(param, "IPV4_PRIMARY_DNS"))
00479    {
00480       ipv4GetDnsServer(interface, 0, &ipv4Addr);
00481       ipv4AddrToString(ipv4Addr, connection->buffer);
00482    }
00483    else if(!strcasecmp(param, "IPV4_SECONDARY_DNS"))
00484    {
00485       ipv4GetDnsServer(interface, 1, &ipv4Addr);
00486       ipv4AddrToString(ipv4Addr, connection->buffer);
00487    }
00488 #if (IPV6_SUPPORT == ENABLED)
00489    else if(!strcasecmp(param, "LINK_LOCAL_ADDR"))
00490    {
00491       ipv6GetLinkLocalAddr(interface, &ipv6Addr);
00492       ipv6AddrToString(&ipv6Addr, connection->buffer);
00493    }
00494    else if(!strcasecmp(param, "GLOBAL_ADDR"))
00495    {
00496       ipv6GetGlobalAddr(interface, 0, &ipv6Addr);
00497       ipv6AddrToString(&ipv6Addr, connection->buffer);
00498    }
00499    else if(!strcasecmp(param, "IPV6_PREFIX"))
00500    {
00501       ipv6GetPrefix(interface, 0, &ipv6Addr, &n);
00502       ipv6AddrToString(&ipv6Addr, connection->buffer);
00503       length = strlen(connection->buffer);
00504       sprintf(connection->buffer + length, "/%u", n);
00505    }
00506    else if(!strcasecmp(param, "ROUTER"))
00507    {
00508       ipv6GetDefaultRouter(interface, 0, &ipv6Addr);
00509       ipv6AddrToString(&ipv6Addr, connection->buffer);
00510    }
00511    else if(!strcasecmp(param, "IPV6_PRIMARY_DNS"))
00512    {
00513       ipv6GetDnsServer(interface, 0, &ipv6Addr);
00514       ipv6AddrToString(&ipv6Addr, connection->buffer);
00515    }
00516    else if(!strcasecmp(param, "IPV6_SECONDARY_DNS"))
00517    {
00518       ipv6GetDnsServer(interface, 1, &ipv6Addr);
00519       ipv6AddrToString(&ipv6Addr, connection->buffer);
00520    }
00521 #endif
00522    else
00523    {
00524       return ERROR_INVALID_TAG;
00525    }
00526 
00527    //Get the length of the resulting string
00528    length = strlen(connection->buffer);
00529 
00530    //Send the contents of the specified environment variable
00531    return httpWriteStream(connection, connection->buffer, length);
00532 }
00533 
00534 
00535 /**
00536  * @brief URI not found callback
00537  * @param[in] connection Handle referencing a client connection
00538  * @param[in] uri NULL-terminated string containing the path to the requested resource
00539  * @return Error code
00540  **/
00541 
00542 error_t httpServerUriNotFoundCallback(HttpConnection *connection,
00543    const char_t *uri)
00544 {
00545    //Not implemented
00546    return ERROR_NOT_FOUND;
00547 }
00548 
00549