4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
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.
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
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
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
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.
29 * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
33 * \author Andrea Righi <arighi@develer.com>
34 * \author Daniele Basile <asterix@develer.com>
36 * \brief Simple Http server.
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 some cgi page, the server return a json dictionary.
46 #include "hw/hw_http.h"
48 #include "hw/hw_adc.h"
49 #include "hw/hw_sdram.h"
50 #include "hw/hw_led.h"
51 #include "hw/hw_lcd.h"
53 // Define logging setting (for cfg/log.h module).
55 #define LOG_VERBOSITY 0
57 #include <cfg/debug.h>
60 #include <cpu/power.h>
62 #include <drv/timer.h>
65 #include <drv/dmac_sam3.h>
67 #include <drv/lcd_hx8347.h>
69 #include <kern/proc.h>
70 #include <kern/monitor.h>
71 #include <struct/heap.h>
75 #include <netif/ethernetif.h>
78 #include <lwip/ip_addr.h>
79 #include <lwip/netif.h>
80 #include <lwip/tcpip.h>
81 #include <lwip/dhcp.h>
89 #include <icons/bertos.h>
95 /* Network interface global variables */
96 static struct ip_addr ipaddr, netmask, gw;
97 static struct netif netif;
100 #define GET_LED_STATUS(status, led_id) (((status) & BV((led_id))) >> (led_id))
101 #define CLEAR_LED_STATUS(status, led_id) ((status) &= ~BV((led_id)))
102 #define SET_LED_STATUS(status, led_id) ((status) |= BV((led_id)))
104 typedef struct BoardStatus
106 char local_ip[sizeof("123.123.123.123")];
107 char last_connected_ip[sizeof("123.123.123.123")];
109 uint16_t internal_temp;
114 static BoardStatus status;
115 static uint8_t raster[RAST_SIZE(LCD_WIDTH, LCD_HEIGHT)];
116 static Bitmap *lcd_bitmap;
117 extern Font font_gohu;
118 static int lcd_brightness = LCD_BACKLIGHT_MAX;
119 static struct Heap heap;
120 static uint8_t tx_buf[2048];
123 static void init(void)
125 /* Enable all the interrupts */
128 /* Initialize debugging module (allow kprintf(), etc.) */
130 /* Initialize system timer */
134 * Kernel initialization: processes (allow to create and dispatch
135 * processes using proc_new()).
142 /* Enable the adc to read internal temperature sensor */
146 heap_init(&heap, (void *)SDRAM_BASE, SDRAM_SIZE);
147 lcd_bitmap = heap_allocmem(&heap, RAST_SIZE(LCD_WIDTH, LCD_HEIGHT));
149 kprintf("Allocated memory for display raster, addr 0x%x\n", (unsigned)lcd_bitmap);
152 kprintf("Error allocating memory for LCD raster!\n");
156 lcd_setBacklight(lcd_brightness);
158 gfx_bitmapInit(lcd_bitmap, raster, LCD_WIDTH, LCD_HEIGHT);
159 gfx_setFont(lcd_bitmap, &font_luBS14);
160 lcd_hx8347_blitBitmap(lcd_bitmap);
162 /* Initialize TCP/IP stack */
163 tcpip_init(NULL, NULL);
165 /* Bring up the network interface */
166 netif_add(&netif, &ipaddr, &netmask, &gw, NULL, ethernetif_init, tcpip_input);
167 netif_set_default(&netif);
168 netif_set_up(&netif);
171 static int sec_to_strDhms(uint32_t sec_time, char *str, size_t len)
173 uint32_t h = (sec_time / 3600);
175 uint32_t m = ((sec_time - (h * 3600)) / 60);
176 uint32_t s = (sec_time - (m * 60) - (h * 3600));
178 if (len < sizeof("xxxxd xxh xxm xxs"))
181 sprintf(str, "%ldd %ldh %ldm %lds", d, (h >= 24) ? h - 24 : h, m, s);
187 static NORETURN void proc_displayRefresh(void)
191 //LOG_INFO("Refresh display\n");
193 status.internal_temp = hw_convertToDegree(adc_read(ADC_TEMPERATURE_CH));
195 sec_to_strDhms(status.up_time, (char *)tx_buf, sizeof(tx_buf));
197 gfx_bitmapClear(lcd_bitmap);
198 text_style(lcd_bitmap, STYLEF_BOLD | STYLEF_UNDERLINE, STYLEF_BOLD | STYLEF_UNDERLINE);
199 text_xprintf(lcd_bitmap, 0, 0, TEXT_CENTER | TEXT_FILL, "BeRTOS Simple Http Server");
200 text_style(lcd_bitmap, 0, STYLEF_MASK);
201 text_xprintf(lcd_bitmap, 2, 0, 0, "Board ip: %s", status.local_ip);
202 text_xprintf(lcd_bitmap, 3, 0, 0, "Last connected ip: %s", status.last_connected_ip);
203 text_xprintf(lcd_bitmap, 4, 0, 0, "Temperature: %d.%dC", status.internal_temp / 10, status.internal_temp % 10);
204 text_xprintf(lcd_bitmap, 5, 0, 0, "Up time: %s", tx_buf);
206 lcd_hx8347_blitBitmap(lcd_bitmap);
213 * Return a JSON string of board status.
215 static int cgi_status(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
222 uint16_t volt = adc_read(1);
224 //Update board status.
225 sprintf(status.last_connected_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->remote_ip.addr));
226 sprintf(status.local_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(client->pcb.ip->local_ip.addr));
228 sprintf((char *)tx_buf, "{ \"local_ip\":\"%s\",\"last_connected_ip\":\"%s\", \"temp\":%d.%d,\"volt\":%d,\"up_time\":%ld,\"tot_req\":%d, \
229 \"leds\":{ \"0\":\"%d\", \"1\":\"%d\", \"2\":\"%d\"}}",
230 status.local_ip, status.last_connected_ip,
231 status.internal_temp / 10, status.internal_temp % 10,
232 volt, status.up_time, status.tot_req,
233 GET_LED_STATUS(status.led_status, 0),
234 GET_LED_STATUS(status.led_status, 1),
235 GET_LED_STATUS(status.led_status, 2));
240 http_sendOk(client, HTTP_CONTENT_JSON);
241 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
245 static int cgi_logo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
251 http_sendOk(client, HTTP_CONTENT_JPEG);
252 netconn_write(client, bertos_logo_jpg, bertos_logo_jpg_len, NETCONN_NOCOPY);
257 * Return the internal micro temperature string.
259 static int cgi_temp(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
265 sprintf((char *)tx_buf, "[%d.%d]", status.internal_temp / 10, status.internal_temp % 10);
267 http_sendOk(client, HTTP_CONTENT_JSON);
268 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
274 * Return the board uptime.
276 static int cgi_uptime(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
282 sec_to_strDhms(status.up_time, (char *)tx_buf, sizeof(tx_buf));
284 http_sendOk(client, HTTP_CONTENT_JSON);
285 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
290 * Return the VR1 potentiometer voltage.
292 static int cgi_resistor(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
298 uint16_t volt = ADC_RANGECONV(adc_read(1), 0, 3300);
299 kprintf("volt %d\n", volt);
300 sprintf((char *)tx_buf, "[ \"%d.%dV\" ]", volt / 1000, volt % 1000);
302 http_sendOk(client, HTTP_CONTENT_JSON);
303 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
308 #define CGI_LED_ID_KEY "n"
309 #define CGI_LED_CMD_KEY "set"
311 static char key_value[80];
314 * Reply to client the request string.
316 static int cgi_led(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
322 char *query_str = strstr(name, "?") + 1;
323 size_t query_str_len = strlen(query_str);
327 int len = http_tokenizeGetRequest(query_str, query_str_len);
329 LOG_INFO("Found %d key/value pair\n", len);
331 if (http_getValue(query_str, query_str_len, CGI_LED_ID_KEY, key_value, sizeof(key_value)) < 0)
333 LOG_ERR("key %s, not found\n", CGI_LED_ID_KEY);
337 LOG_INFO("Found key %s = %s\n", CGI_LED_ID_KEY, key_value);
338 led_id = atoi(key_value);
341 if (http_getValue(query_str, query_str_len, CGI_LED_CMD_KEY, key_value, sizeof(key_value)) < 0)
343 LOG_ERR("key %s, not found\n", CGI_LED_CMD_KEY);
347 LOG_INFO("Found key %s = %s\n", CGI_LED_CMD_KEY, key_value);
348 led_cmd = atoi(key_value);
353 SET_LED_STATUS(status.led_status, led_id);
358 CLEAR_LED_STATUS(status.led_status, led_id);
361 sprintf((char *)tx_buf, "{\"n\":%d, \"set\":,%d}", led_id, led_cmd);
363 http_sendOk(client, HTTP_CONTENT_JSON);
364 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
368 http_sendInternalErr(client, HTTP_CONTENT_JSON);
372 static int cgi_ledStatus(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
378 sprintf((char *)tx_buf, "{ \"0\":\"%d\", \"1\":\"%d\", \"2\":\"%d\"}",
379 GET_LED_STATUS(status.led_status, 0),
380 GET_LED_STATUS(status.led_status, 1),
381 GET_LED_STATUS(status.led_status, 2));
383 http_sendOk(client, HTTP_CONTENT_JSON);
384 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
389 #define CGI_MSG_CMD_KEY "msg"
391 static int cgi_displayMsg(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
397 char *query_str = strstr(name, "?") + 1;
398 size_t query_str_len = strlen(query_str);
400 int len = http_tokenizeGetRequest(query_str, query_str_len);
402 LOG_INFO("Found %d key/value pair\n", len);
404 if (http_getValue(query_str, query_str_len, CGI_MSG_CMD_KEY, key_value, sizeof(key_value)) > 0)
407 LOG_INFO("Found key %s = %s\n", CGI_MSG_CMD_KEY, key_value);
409 gfx_bitmapClear(lcd_bitmap);
410 text_style(lcd_bitmap, STYLEF_BOLD | STYLEF_UNDERLINE, STYLEF_BOLD | STYLEF_UNDERLINE);
411 text_xprintf(lcd_bitmap, 0, 0, TEXT_CENTER | TEXT_FILL, "BeRTOS Simple Http Server");
412 text_style(lcd_bitmap, 0, STYLEF_MASK);
413 text_xprintf(lcd_bitmap, 2, 0, TEXT_CENTER | TEXT_FILL, "Your message:");
414 text_xprintf(lcd_bitmap, 10, 0, TEXT_CENTER, "%s", key_value);
416 lcd_hx8347_blitBitmap(lcd_bitmap);
418 http_sendOk(client, HTTP_CONTENT_JSON);
422 http_sendInternalErr(client, HTTP_CONTENT_JSON);
427 * Reply to client the request string.
429 static int cgi_echo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
433 http_sendOk(client, HTTP_CONTENT_PLAIN);
434 netconn_write(client, recv_buf, recv_len, NETCONN_COPY);
439 * Return to client a string that display the CHIP ID information.
440 * See datasheet for more detail.
442 static int cgi_chipInfo(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
448 sprintf((char *)tx_buf, "{ \"core_name\":\"%s\", \"arch_name\":\"%s\", \"sram_size\":\"%s\",\"flash_size\":\"%s\", \"mem_boot_type\":\"%s\" }",
449 chipid_eproc_name(CHIPID_EPRCOC()),
450 chipid_archnames(CHIPID_ARCH()),
451 chipid_sramsize(CHIPID_SRAMSIZ()),
452 chipid_nvpsize(CHIPID_NVPSIZ()),
453 chipid_nvptype(CHIPID_NVTYP()));
455 http_sendOk(client, HTTP_CONTENT_JSON);
456 netconn_write(client, tx_buf, strlen((char *)tx_buf), NETCONN_COPY);
462 static int cgi_error(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
474 * Default function that http server call every client request, if it doesn't match a cgi table.
475 * In this implementation all client request are associate to real file stored on FAT file
476 * sistem on SD card. If the file there is not on SD card the server reply to client the
477 * error File not found, and send an harcoded page. In the same way, the server reply
478 * error page if the SD card is not present.
481 static int http_htmPageLoad(struct netconn *client, const char *name, char *recv_buf, size_t recv_len)
486 if (SD_CARD_PRESENT())
489 // SD fat filesystem context
495 bool sd_ok = sd_init(&sd, NULL, 0);
498 LOG_INFO("Mount FAT filesystem.\n");
499 result = f_mount(0, &fs);
502 LOG_ERR("Mounting FAT volumes error[%d]\n", result);
509 result = fatfile_open(&in_file, name, FA_OPEN_EXISTING | FA_READ);
514 LOG_INFO("Opened file '%s' size %ld\n", name, in_file.fat_file.fsize);
516 int type = http_searchContentType(name);
517 http_sendOk(client, type);
519 while (count < in_file.fat_file.fsize)
521 int len = kfile_read(&in_file.fd, tx_buf, sizeof(tx_buf));
522 netconn_write(client, tx_buf, len, NETCONN_COPY);
526 kfile_flush(&in_file.fd);
527 kfile_close(&in_file.fd);
529 LOG_INFO("Sent: %d\n", count);
533 LOG_ERR("Unable to open file: '%s' error[%d]\n", name, result);
534 http_sendFileNotFound(client, HTTP_CONTENT_HTML);
535 netconn_write(client, http_file_not_found, http_file_not_found_len - 1, NETCONN_NOCOPY);
540 LOG_INFO("Umount FAT filesystem.\n");
544 http_sendFileNotFound(client, HTTP_CONTENT_HTML);
545 netconn_write(client, http_sd_not_present, http_sd_not_present_len, NETCONN_NOCOPY);
553 * Static cgi table where we associate callback to page.
555 static HttpCGI cgi_table[] =
557 { CGI_MATCH_NAME, "echo", cgi_echo },
558 { CGI_MATCH_NAME, "get_temperature", cgi_temp },
559 { CGI_MATCH_NAME, "get_uptime", cgi_uptime },
560 { CGI_MATCH_NAME, "get_resistor", cgi_resistor },
561 { CGI_MATCH_NAME, "set_led", cgi_led },
562 { CGI_MATCH_NAME, "get_ledStatus", cgi_ledStatus },
563 { CGI_MATCH_NAME, "error", cgi_error },
564 { CGI_MATCH_NAME, "status", cgi_status },
565 { CGI_MATCH_NAME, "get_chipinfo", cgi_chipInfo },
566 { CGI_MATCH_NAME, "display", cgi_displayMsg },
567 { CGI_MATCH_NAME, "bertos_logo_jpg", cgi_logo },
568 { CGI_MATCH_NONE, NULL, NULL }
574 struct netconn *server;
576 /* Hardware initialization */
578 http_init(http_htmPageLoad, cgi_table);
580 lcd_hx8347_blitBitmap24(12, 52, BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, bmp_logo);
583 while (!netif.ip_addr.addr)
584 timer_delay(DHCP_FINE_TIMER_MSECS);
586 sprintf(status.local_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(netif.ip_addr.addr));
587 sprintf(status.last_connected_ip, "%d.%d.%d.%d", IP_ADDR_TO_INT_TUPLE(0));
588 LOG_INFO("dhcp ok: ip = %s\n", status.local_ip);
590 text_xprintf(lcd_bitmap, 14, 0, 0, "Board ip: %s", status.local_ip);
591 lcd_hx8347_blitBitmap(lcd_bitmap);
594 proc_new(proc_displayRefresh, NULL, KERN_MINSTACKSIZE * 2, NULL);
596 server = netconn_new(NETCONN_TCP);
597 netconn_bind(server, IP_ADDR_ANY, 80);
598 netconn_listen(server);