boards/sam3x-ek/examples/sam3x-ek_http_server/main.c

   1 /**
   2  * \file
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   4  * This file is part of BeRTOS.
   5  *
   6  * Bertos is free software; you can redistribute it and/or modify
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   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  * As a special exception, you may use this file as part of a free software
  21  * library without restriction.  Specifically, if other files instantiate
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  24  * file does not by itself cause the resulting executable to be covered by
  25  * the GNU General Public License.  This exception does not however
  26  * invalidate any other reasons why the executable file might be covered by
  27  * the GNU General Public License.
  28  *
  29  * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
  30  *
  31  * -->
  32  *
  33  * \author Andrea Righi <arighi@develer.com>
  34  * \author Daniele Basile <asterix@develer.com>
  35  *
  36  * \brief Simple Http server.
  37  *
  38  * This simple web server read the site's pages from SD card, and manage
  39  * the cases where SD is not present or page not found, using embedded pages.
  40  * Quering from browser the /status page, the server return a json dictionary where are store
  41  * some board status info, like board temperature, up-time, etc.
  42  */
  43
  44
  45 #include "hw/hw_http.h"
  46 #include "hw/hw_sd.h"
  47 #include "hw/hw_adc.h"
  48 #include "hw/hw_sdram.h"
  49
  50 // Define logging setting (for cfg/log.h module).
  51 #define LOG_LEVEL         3
  52 #define LOG_VERBOSITY     0
  53 #include <cfg/log.h>
  54 #include <cfg/debug.h>
  55
  56 #include <cpu/irq.h>
  57 #include <cpu/power.h>
  58
  59 #include <drv/timer.h>
  60 #include <drv/ser.h>
  61 #include <drv/sd.h>
  62 #include <drv/dmac_sam3.h>
  63 #include <drv/adc.h>
  64
  65 #include <kern/proc.h>
  66 #include <kern/monitor.h>
  67
  68 #include <net/http.h>
  69
  70 #include <netif/ethernetif.h>
  71
  72 #include <lwip/ip.h>
  73 #include <lwip/ip_addr.h>
  74 #include <lwip/netif.h>
  75 #include <lwip/tcpip.h>
  76 #include <lwip/dhcp.h>
  77
  78 #include <fs/fat.h>
  79
  80 #include <icons/bertos.h>
  81
  82 #include <stdio.h>
  83 #include <string.h>
  84
  85 /* Network interface global variables */
  86 static struct ip_addr ipaddr, netmask, gw;
  87 static struct netif netif;
  88
  89 typedef struct BoardStatus
  90 {
  91         char local_ip[sizeof("123.123.123.123")];
  92         char last_connected_ip[sizeof("123.123.123.123")];
  93         uint16_t internal_temp;
  94         ticks_t up_time;
  95         size_t tot_req;
  96 } BoardStatus;
  97
  98 static BoardStatus status;
  99
 100
 101 static void init(void)
 102 {
 103         /* Enable all the interrupts */
 104         IRQ_ENABLE;
 105
 106         /* Initialize debugging module (allow kprintf(), etc.) */
 107         kdbg_init();
 108         /* Initialize system timer */
 109         timer_init();
 110
 111         /*
 112          * Kernel initialization: processes (allow to create and dispatch
 113          * processes using proc_new()).
 114          */
 115         proc_init();
 116         sdram_init();
 117
 118         /* Initialize TCP/IP stack */
 119         tcpip_init(NULL, NULL);
 120
 121         /* Bring up the network interface */
 122         netif_add(&netif, &ipaddr, &netmask, &gw, NULL, ethernetif_init, tcpip_input);
 123         netif_set_default(&netif);
 124         netif_set_up(&netif);
 125
 126         dmac_init();
 127
 128         adc_init();
 129         /* Enable the adc to read internal temperature sensor */
 130         hw_enableTempRead();
 131 }
 132
 133 static NORETURN void status_process(void)
 134 {
 135         while (1)
 136         {
 137                 status.internal_temp = hw_convertToDegree(adc_read(ADC_TEMPERATURE_CH));
 138                 status.up_time++;
 139                 timer_delay(1000);
 140         }
 141 }
 142
 143 #define IP_ADDR_TO_INT_TUPLE(addr) \
 144                 (int)((addr) >>  0 & 0xff), \
 145                 (int)((addr) >>  8 & 0xff), \
 146                 (int)((addr) >> 16 & 0xff), \
 147                 (int)((addr) >> 24 & 0xff)
 148
 149
 150 static uint8_t tx_buf[2048];
 151
 152 static int cgi_status(struct netconn *client, const char *name, char *revc_buf, size_t revc_len)
 153 {
 154         (void)revc_buf;
 155         (void)revc_len;
 156         (void)name;
 157
 158         //Update board status.
 159         sprintf(status.last_connected_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->remote_ip.addr));
 160         sprintf(status.local_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->local_ip.addr));
 161         sprintf((char *)tx_buf, "[ %s, %s, %d.%d, %ld, %d ]", status.local_ip, status.last_connected_ip,
 162                                                                                                                         status.internal_temp / 10, status.internal_temp % 10,
 163                                                                                                                         status.up_time, status.tot_req);
 164
 165         status.tot_req++;
 166
 167         http_sendOk(client);
 168         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 169         return 0;
 170 }
 171
 172 static int cgi_logo(struct netconn *client, const char *name, char *revc_buf, size_t revc_len)
 173 {
 174         (void)revc_buf;
 175         (void)revc_len;
 176         (void)name;
 177
 178         http_sendOk(client);
 179         netconn_write(client, bertos_logo_jpg, bertos_logo_jpg_len, NETCONN_NOCOPY);
 180         return 0;
 181 }
 182
 183 static int cgi_temp(struct netconn *client, const char *name, char *revc_buf, size_t revc_len)
 184 {
 185         (void)revc_buf;
 186         (void)revc_len;
 187         (void)name;
 188
 189         sprintf((char *)tx_buf, "[ %d.%d ]", status.internal_temp / 10, status.internal_temp % 10);
 190
 191         http_sendOk(client);
 192         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 193         return 0;
 194 }
 195
 196 static int cgi_echo(struct netconn *client, const char *name, char *revc_buf, size_t revc_len)
 197 {
 198         (void)name;
 199
 200         http_sendOk(client);
 201         netconn_write(client, revc_buf, revc_len, NETCONN_COPY);
 202         return 0;
 203 }
 204
 205 static int http_htmPageLoad(struct netconn *client, const char *name, char *revc_buf, size_t revc_len)
 206 {
 207         (void)revc_buf;
 208         (void)revc_len;
 209
 210         if (SD_CARD_PRESENT())
 211         {
 212
 213                 // SD fat filesystem context
 214                 Sd sd;
 215                 FATFS fs;
 216                 FatFile in_file;
 217                 FRESULT result;
 218
 219                 bool sd_ok = sd_init(&sd, NULL, 0);
 220                 if (sd_ok)
 221                 {
 222                         LOG_INFO("Mount FAT filesystem.\n");
 223                         result = f_mount(0, &fs);
 224                         if (result != FR_OK)
 225                         {
 226                                 LOG_ERR("Mounting FAT volumes error[%d]\n", result);
 227                                 sd_ok = false;
 228                                 f_mount(0, NULL);
 229                         }
 230
 231                         if (sd_ok)
 232                         {
 233                                 result = fatfile_open(&in_file, name,  FA_OPEN_EXISTING | FA_READ);
 234
 235                                 size_t count = 0;
 236                                 if (result == FR_OK)
 237                                 {
 238                                         LOG_INFO("Opened file '%s' size %ld\n", name, in_file.fat_file.fsize);
 239
 240                                         http_sendOk(client);
 241
 242                                         while (count < in_file.fat_file.fsize)
 243                                         {
 244                                                 int len = kfile_read(&in_file.fd, tx_buf, sizeof(tx_buf));
 245                                                 netconn_write(client, tx_buf, len, NETCONN_COPY);
 246                                                 count += len;
 247                                         }
 248
 249                                         kfile_flush(&in_file.fd);
 250                                         kfile_close(&in_file.fd);
 251
 252                                         LOG_INFO("Sent: %d\n", count);
 253                                 }
 254                                 else
 255                                 {
 256                                         LOG_ERR("Unable to open file: '%s' error[%d]\n",  name, result);
 257                                         http_sendFileNotFound(client);
 258                                         netconn_write(client, http_file_not_found, http_file_not_found_len - 1, NETCONN_NOCOPY);
 259                                 }
 260                         }
 261                 }
 262                 f_mount(0, NULL);
 263                 LOG_INFO("Umount FAT filesystem.\n");
 264         }
 265         else
 266         {
 267                 http_sendFileNotFound(client);
 268                 netconn_write(client, http_sd_not_present, http_sd_not_present_len, NETCONN_NOCOPY);
 269         }
 270
 271         return 0;
 272 }
 273
 274 static int cgi_chipInfo(struct netconn *client, const char *name, char *revc_buf, size_t revc_len)
 275 {
 276         (void)revc_buf;
 277         (void)revc_len;
 278         (void)name;
 279
 280         sprintf((char *)tx_buf, "[ %s, %s, %s, %s, %s ]",
 281         chipid_eproc_name(CHIPID_EPRCOC()),
 282         chipid_archnames(CHIPID_ARCH()),
 283         chipid_sramsize(CHIPID_SRAMSIZ()),
 284         chipid_nvpsize(CHIPID_NVPSIZ()),
 285         chipid_nvptype(CHIPID_NVTYP()));
 286
 287         http_sendOk(client);
 288         netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
 289
 290         return 0;
 291 }
 292
 293 static int cgi_error(struct netconn *client, const char *name, char *revc_buf, size_t revc_len)
 294 {
 295         (void)revc_buf;
 296         (void)revc_len;
 297         (void)name;
 298         (void)client;
 299
 300         return -1;
 301 }
 302
 303 static HttpCGI cgi_table[] =
 304 {
 305         { CGI_MATCH_NAME, "echo",                cgi_echo          },
 306         { CGI_MATCH_NAME, "temp",                cgi_temp          },
 307         { CGI_MATCH_NAME, "status",              cgi_status        },
 308         { CGI_MATCH_NAME, "chipinfo",            cgi_chipInfo      },
 309         { CGI_MATCH_NAME, "error_test",          cgi_error         },
 310         { CGI_MATCH_NAME, "bertos_logo_jpg",     cgi_logo          },
 311         { CGI_MATCH_NONE,  NULL,                 NULL              }
 312 };
 313
 314
 315 int main(void)
 316 {
 317         struct netconn *server;
 318
 319         /* Hardware initialization */
 320         init();
 321         http_init(http_htmPageLoad, cgi_table);
 322
 323         proc_new(status_process, NULL, KERN_MINSTACKSIZE * 2, NULL);
 324
 325         dhcp_start(&netif);
 326         while (!netif.ip_addr.addr)
 327                 timer_delay(DHCP_FINE_TIMER_MSECS);
 328         kprintf("dhcp ok: ip = %d.%d.%d.%d\n", IP_ADDR_TO_INT_TUPLE(netif.ip_addr.addr));
 329
 330         server = netconn_new(NETCONN_TCP);
 331         netconn_bind(server, IP_ADDR_ANY, 80);
 332         netconn_listen(server);
 333
 334         while (1)
 335         {
 336                 http_poll(server);
 337         }
 338 }