Ethernet-based network support for mbedConnectorInterface.
Dependencies: libnsdl EthernetInterface mbed-rtos
Dependents: IoT_LED_demo ServoTest uWater_Project hackathon ... more
Diff: NSDL/nsdl_support.cpp
- Revision:
- 0:31292d956e92
- Child:
- 1:cb681dfa1678
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/NSDL/nsdl_support.cpp Sun Feb 01 18:24:03 2015 +0000 @@ -0,0 +1,168 @@ +// 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); + } +} \ No newline at end of file