LWM2M Weather Station
Dependencies: EthernetInterfaceUpdate mbed-rtos mbed nanoservice_client_1_12_X
Diff: resources/rain.cpp
- Revision:
- 0:2b74e0fc583d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/resources/rain.cpp Tue Nov 25 01:43:27 2014 +0000 @@ -0,0 +1,60 @@ +// IPSO Prototype Rain sensor resource implementation + +#include "mbed.h" +#include "nsdl_support.h" + +#define RAIN_RES_ID "3300/1/5700" +#define RAIN_RES_RT "urn:X-mbed:rain" + +extern Serial pc; +uint8_t rain_max_age = 0; +uint8_t rain_content_type = 50; + +float rain_reading; +char rain_string[6]; + +/* Only GET method allowed */ +static uint8_t rain_resource_cb(sn_coap_hdr_s *received_coap_ptr, sn_nsdl_addr_s *address, sn_proto_info_s * proto) +{ + sn_coap_hdr_s *coap_res_ptr = 0; + + if(received_coap_ptr->msg_code == COAP_MSG_CODE_REQUEST_GET) + { + sprintf(rain_string,"%2.2f", rain_reading); + pc.printf("rain: %s\r\n", rain_string); + + coap_res_ptr = sn_coap_build_response(received_coap_ptr, COAP_MSG_CODE_RESPONSE_CONTENT); + + coap_res_ptr->payload_len = strlen(rain_string); + coap_res_ptr->payload_ptr = (uint8_t*)rain_string; + + coap_res_ptr->content_type_ptr = &rain_content_type; + coap_res_ptr->content_type_len = sizeof(rain_content_type); + + coap_res_ptr->options_list_ptr = (sn_coap_options_list_s*)nsdl_alloc(sizeof(sn_coap_options_list_s)); + if(!coap_res_ptr->options_list_ptr) + { + pc.printf("cant alloc option list for max-age\r\n"); + coap_res_ptr->options_list_ptr = NULL; //FIXME report error and recover + } + memset(coap_res_ptr->options_list_ptr, 0, sizeof(sn_coap_options_list_s)); + coap_res_ptr->options_list_ptr->max_age_ptr = &rain_max_age; + coap_res_ptr->options_list_ptr->max_age_len = sizeof(rain_max_age); + + sn_nsdl_send_coap_message(address, coap_res_ptr); + nsdl_free(coap_res_ptr->options_list_ptr); + coap_res_ptr->options_list_ptr = NULL; + coap_res_ptr->content_type_ptr = NULL;// parser_release below tries to free this memory + + } + + sn_coap_parser_release_allocated_coap_msg_mem(coap_res_ptr); + + return 0; +} + +int create_rain_resource(sn_nsdl_resource_info_s *resource_ptr) +{ + nsdl_create_dynamic_resource(resource_ptr, sizeof(RAIN_RES_ID)-1, (uint8_t*)RAIN_RES_ID, sizeof(RAIN_RES_RT)-1, (uint8_t*)RAIN_RES_RT, 0, &rain_resource_cb, (SN_GRS_GET_ALLOWED)); + return 0; +} \ No newline at end of file