LEDbar.cpp

00001 // Light resource implementation
00002 
00003 #include "mbed.h"
00004 #include "nsdl_support.h"
00005 #include "LEDbar.h"
00006 #include "LED_Bar.h"
00007 
00008 #define LEDBAR_RES_ID    "11101/0/5901"
00009 #define LEDBAR_RES_RT    "urn:X-mbed:LEDbar"
00010 
00011 extern Serial pc;
00012 char leds[] = {"0000000000"}; //GGGGGGGGYR
00013 
00014 LED_Bar bar(D7, D6);
00015 
00016 uint8_t ledbar_max_age = 0; 
00017 uint8_t ledbar_content_type = 0;
00018 
00019 void set_leds(char *leds)
00020 {
00021 int i;
00022     for (i=0; i<=9; i++) {
00023         if(leds[i] == '1')
00024             bar.setSingleLed((9-i),1);
00025         else if(leds[i] == '0')
00026             bar.setSingleLed((9-i),0);    
00027         }    
00028 }
00029 
00030 
00031 /* Only GET and PUT method allowed */
00032 static uint8_t LEDbar_resource_cb(sn_coap_hdr_s *received_coap_ptr, sn_nsdl_addr_s *address, sn_proto_info_s * proto)
00033 {
00034     sn_coap_hdr_s *coap_res_ptr = 0;
00035 
00036     //pc.printf("LED Strip callback\r\n");
00037 
00038     if(received_coap_ptr->msg_code == COAP_MSG_CODE_REQUEST_GET)
00039     {
00040         coap_res_ptr = sn_coap_build_response(received_coap_ptr, COAP_MSG_CODE_RESPONSE_CONTENT);
00041 
00042         coap_res_ptr->payload_len = strlen(leds);
00043         coap_res_ptr->payload_ptr = (uint8_t*)leds;
00044         
00045         coap_res_ptr->content_type_ptr = &ledbar_content_type;
00046         coap_res_ptr->content_type_len = sizeof(ledbar_content_type);
00047         
00048         coap_res_ptr->options_list_ptr = (sn_coap_options_list_s*)nsdl_alloc(sizeof(sn_coap_options_list_s));
00049         if(!coap_res_ptr->options_list_ptr)
00050             {
00051             pc.printf("cant alloc option list for max-age\r\n");
00052             coap_res_ptr->options_list_ptr = NULL; //FIXME report error and recover
00053             }
00054         memset(coap_res_ptr->options_list_ptr, 0, sizeof(sn_coap_options_list_s));
00055         coap_res_ptr->options_list_ptr->max_age_ptr = &ledbar_max_age;
00056         coap_res_ptr->options_list_ptr->max_age_len = sizeof(ledbar_max_age);
00057 
00058         sn_nsdl_send_coap_message(address, coap_res_ptr);
00059         nsdl_free(coap_res_ptr->options_list_ptr);
00060         coap_res_ptr->options_list_ptr = NULL;
00061         coap_res_ptr->content_type_ptr = NULL;// parser_release below tries to free this memory
00062 
00063     }
00064     else if(received_coap_ptr->msg_code == COAP_MSG_CODE_REQUEST_PUT)
00065     {
00066         //pc.printf("PUT: %d bytes\r\n", received_coap_ptr->payload_len);
00067         if(received_coap_ptr->payload_len == 10)
00068         {
00069             memcpy(leds, (char *)received_coap_ptr->payload_ptr, received_coap_ptr->payload_len);
00070 
00071             leds[received_coap_ptr->payload_len] = '\0';
00072             pc.printf("PUT: %s\r\n",leds);
00073 
00074             //call LED strup update function here
00075             set_leds(leds);
00076 
00077             coap_res_ptr = sn_coap_build_response(received_coap_ptr, COAP_MSG_CODE_RESPONSE_CHANGED);
00078             sn_nsdl_send_coap_message(address, coap_res_ptr);
00079         }
00080     }
00081 
00082     sn_coap_parser_release_allocated_coap_msg_mem(coap_res_ptr);
00083     return 0;
00084 }
00085 
00086 int create_LEDbar_resource(sn_nsdl_resource_info_s *resource_ptr)
00087 {
00088     nsdl_create_dynamic_resource(resource_ptr, sizeof(LEDBAR_RES_ID)-1, (uint8_t*)LEDBAR_RES_ID, sizeof(LEDBAR_RES_RT)-1, (uint8_t*)LEDBAR_RES_RT, 0, &LEDbar_resource_cb, (SN_GRS_GET_ALLOWED | SN_GRS_PUT_ALLOWED));
00089     set_leds("0000000000");
00090     return 0;
00091 }