Ethernet-based network support for mbedConnectorInterface.
Dependencies: libnsdl EthernetInterface mbed-rtos
Dependents: IoT_LED_demo ServoTest uWater_Project hackathon ... more
NSDL/nsdl_support.cpp
- Committer:
- ansond
- Date:
- 2015-02-01
- Revision:
- 0:31292d956e92
- Child:
- 1:cb681dfa1678
File content as of revision 0:31292d956e92:
// NSDL library support functions #include "mbed.h" #include "nsdl_support.h" #include "mbedConnectorInterface.h" // we have to redefine DBG as its used differently here... #ifdef DBG #undef DBG #endif #define DBG printf Endpoint nsp; UDPSocket server; void *nsdl_alloc(uint16_t size) { void *chunk = NULL; if (size > 0) chunk = malloc(size); if (chunk != NULL && size > 0) memset(chunk,0,size); return chunk; } void nsdl_free(void* ptr_to_free) { if (ptr_to_free != NULL) free(ptr_to_free); } /* * Create a static resoure * Only get is allowed */ void nsdl_create_static_resource(sn_nsdl_resource_info_s *resource_structure, uint16_t pt_len, uint8_t *pt, uint16_t rpp_len, uint8_t *rpp_ptr, uint8_t *rsc, uint16_t rsc_len) { resource_structure->access = SN_GRS_GET_ALLOWED; resource_structure->mode = SN_GRS_STATIC; resource_structure->pathlen = pt_len; resource_structure->path = pt; resource_structure->resource_parameters_ptr->resource_type_len = rpp_len; resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr; resource_structure->resource = rsc; resource_structure->resourcelen = rsc_len; sn_nsdl_create_resource(resource_structure); } void nsdl_create_dynamic_resource(sn_nsdl_resource_info_s *resource_structure, uint16_t pt_len, uint8_t *pt, uint16_t rpp_len, uint8_t *rpp_ptr, uint8_t is_observable, sn_grs_dyn_res_callback_t callback_ptr, int access_right) { resource_structure->access = (sn_grs_resource_acl_e)access_right; resource_structure->resource = 0; resource_structure->resourcelen = 0; resource_structure->sn_grs_dyn_res_callback = callback_ptr; resource_structure->mode = SN_GRS_DYNAMIC; resource_structure->pathlen = pt_len; resource_structure->path = pt; resource_structure->resource_parameters_ptr->resource_type_len = rpp_len; resource_structure->resource_parameters_ptr->resource_type_ptr = rpp_ptr; resource_structure->resource_parameters_ptr->observable = is_observable; sn_nsdl_create_resource(resource_structure); } sn_nsdl_ep_parameters_s* nsdl_init_register_endpoint(sn_nsdl_ep_parameters_s *endpoint_structure, uint8_t* name, uint8_t* typename_ptr, uint8_t *lifetime_ptr) { if (endpoint_structure == NULL) { endpoint_structure = (sn_nsdl_ep_parameters_s*)nsdl_alloc(sizeof(sn_nsdl_ep_parameters_s)); } if (endpoint_structure != NULL) { memset(endpoint_structure, 0, sizeof(sn_nsdl_ep_parameters_s)); endpoint_structure->endpoint_name_ptr = name; endpoint_structure->endpoint_name_len = strlen((char*)name); endpoint_structure->type_ptr = typename_ptr; endpoint_structure->type_len = strlen((char*)typename_ptr); endpoint_structure->lifetime_ptr = lifetime_ptr; endpoint_structure->lifetime_len = strlen((char*)lifetime_ptr); } return endpoint_structure; } void nsdl_clean_register_endpoint(sn_nsdl_ep_parameters_s **endpoint_structure) { if (endpoint_structure != NULL) { if (*endpoint_structure != NULL) { nsdl_free(*endpoint_structure); *endpoint_structure = NULL; } } } static uint8_t tx_cb(sn_nsdl_capab_e protocol, uint8_t *data_ptr, uint16_t data_len, sn_nsdl_addr_s *address_ptr) { //if (m_logger != NULL) m_logger->log("NSP: sending %d bytes...",data_len); int sent = server.sendTo(nsp, (char*)data_ptr, data_len); return 1; } static uint8_t rx_cb(sn_coap_hdr_s *coap_packet_ptr, sn_nsdl_addr_s *address_ptr) { // Rx callback process it... return 0; } void register_endpoint(bool init) { sn_nsdl_ep_parameters_s *endpoint_ptr = NULL; endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)NSP_address_bytes, ep_type, lifetime_ptr); sn_nsdl_update_registration(endpoint_ptr); nsdl_clean_register_endpoint(&endpoint_ptr); } void registration_update_thread(void const *args) { int count = 0; int registration_time = NSP_RD_UPDATE_PERIOD; // about 2.5 minutes assuming 4 iterations/second // first we want to wait a bit... let the endpoint crank up... Thread::wait(NSP_RD_UPDATE_PERIOD); // wait about 150 seconds, then go ahead and start the re-registration interval... // now loop this thread forever sleeping and re-registering at the right iteration. while(true) { Thread::wait(MAIN_LOOP_SLEEP); ++count; if (count%registration_time == 0) { // re-registration time! count = 0; DBG("NSP: (re)registering...\r\n"); register_endpoint(false); DBG("NSP: (re)registering complete.\r\n"); } } } void nsdl_init() { uint8_t nsp_addr[4]; sn_nsdl_mem_s memory_cbs; /* Initialize libNsdl */ memset(&memory_cbs,0,sizeof(memory_cbs)); memset(nsp_addr,0,sizeof(nsp_addr)); memory_cbs.sn_nsdl_alloc = &nsdl_alloc; memory_cbs.sn_nsdl_free = &nsdl_free; if(sn_nsdl_init(&tx_cb, &rx_cb, &memory_cbs) == -1) { DBG("NSP: libNsdl init failed\r\n"); } else { DBG("NSP: libNsdl init successfu\r\nl"); } /* Set nsp address for library */ set_NSP_address(nsp_addr, NSP_COAP_UDP_PORT, SN_NSDL_ADDRESS_TYPE_IPV4); } // NSP event loop - spawn a re-registration thread AFTER we have initially registered and begun event processing... void nsdl_event_loop() { sn_nsdl_addr_s received_packet_address; Endpoint from; uint8_t nsp_received_address[4]; char nsp_buffer[1024]; memset(&received_packet_address, 0, sizeof(sn_nsdl_addr_s)); memset(nsp_received_address, 0, sizeof(nsp_received_address)); received_packet_address.addr_ptr = nsp_received_address; // start the registration update thread.. it will wait a bit while the endpoint gins up... Thread registration_thread(registration_update_thread); // FOREVER: main loop for event processing while(true) { //if (m_logger != NULL) m_logger->log("NSP: waiting for data..."); int n = server.receiveFrom(from,nsp_buffer,sizeof(nsp_buffer)); //if (m_logger != NULL) m_logger->log("NSP: received %d bytes... processing...",n); if (n >= 0) sn_nsdl_process_coap((uint8_t*)nsp_buffer,n,&received_packet_address); } }