![](/media/cache/group/arm_mbed.PNG.50x50_q85.png)
Project with example IPSO resources for LED bar, Gas Sensor, and Light Sensor
Dependencies: EthernetInterface LED_Bar mbed-rtos mbed nsdl_lib
Diff: nsdl_support.cpp
- Revision:
- 0:93cc592ffdb5
diff -r 000000000000 -r 93cc592ffdb5 nsdl_support.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nsdl_support.cpp Mon Oct 20 02:04:20 2014 +0000 @@ -0,0 +1,202 @@ +// NSDL library support functions + +#include "mbed.h" +#include "nsdl_support.h" +#include "mbed.h" +#include "rtos.h" +#include "EthernetInterface.h" +#include "UDPSocket.h" +#include "Endpoint.h" + +/* __heapvalid((__heapprt)fprintf,stdout, 1);\*/ +#define MEM_VALID(x) \ + int s##x=0;\ + int *h##x = new int [1];\ + std::printf("[stack]0x%08x\t[heap]0x%08x\t[memory avail]%d bytes \tLine: %d %s\r\n", &s##x, h##x, &s##x-h##x, __LINE__, __FILE__);\ + if (h##x > &s##x)\ + printf("collision\n");\ + else\ + delete [] h##x;\ + __nop() + +extern Serial pc; +extern Endpoint nsp; +extern UDPSocket server; +extern char endpoint_name[24]; +extern uint8_t ep_type[]; +extern uint8_t lifetime_ptr[]; +char null_ep_name[] = ""; +uint8_t null_ep_type[] = ""; +uint8_t null_lifetime_ptr[] = "60"; +bool nsdl_reg_update_needed = false; + +/* The number of seconds between NSP registration messages */ +#define RD_UPDATE_PERIOD 30 + +void *nsdl_alloc(uint16_t size) +{ + void *buf = malloc(size); +// printf("alloc\r\n"); +// MEM_VALID(0); + return buf; +} + +void nsdl_free(void* ptr_to_free) +{ + free(ptr_to_free); +// printf("de-alloc\r\n"); +// MEM_VALID(0); +} + +/* + * 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 (NULL == endpoint_structure) + { + endpoint_structure = (sn_nsdl_ep_parameters_s*)nsdl_alloc(sizeof(sn_nsdl_ep_parameters_s)); + } + if (endpoint_structure) + { + 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) + { + 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) +{ + pc.printf("TX callback!\n\rSending %d bytes\r\n", data_len); + + if(server.sendTo(nsp, (char*)data_ptr, data_len) != data_len) + pc.printf("sending failed\n\r"); + + return 1; +} + +static uint8_t rx_cb(sn_coap_hdr_s *coap_packet_ptr, sn_nsdl_addr_s *address_ptr) +{ + pc.printf("RX callback!\r\n"); + pc.printf("msg_code: %d \r\n", coap_packet_ptr->msg_code); + pc.printf("Payload length: %d bytes\r\n", coap_packet_ptr->payload_len); + int i; + pc.printf("Payload:'"); + for (i=0; i < coap_packet_ptr->payload_len; i++) + pc.printf("%c", *(coap_packet_ptr->payload_ptr + i)); + pc.printf("' \r\n"); + if (coap_packet_ptr->options_list_ptr && coap_packet_ptr->options_list_ptr->location_path_ptr) + { + pc.printf("Location: /"); + int i; + for (i=0; i < coap_packet_ptr->options_list_ptr->location_path_len; i++) pc.printf("%c", (char)(coap_packet_ptr->options_list_ptr->location_path_ptr[i])); + pc.printf(" \r\n"); + } + //sn_coap_packet_debug(coap_packet_ptr); + return 0; +} + +static void registration_update_thread(void const *args) +{ + sn_nsdl_ep_parameters_s *endpoint_ptr = NULL; + + while(true) + { + wait(RD_UPDATE_PERIOD); + endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)null_ep_name, null_ep_type, null_lifetime_ptr); + if(sn_nsdl_update_registration(endpoint_ptr) != 0) + pc.printf("NSP re-registering failed\r\n"); + else + pc.printf("NSP re-registering OK\r\n"); + nsdl_clean_register_endpoint(&endpoint_ptr); + } +} + +void nsdl_init() +{ + uint8_t nsp_addr[4]; + sn_nsdl_mem_s memory_cbs; + + /* Initialize libNsdl */ + 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) + pc.printf("libNsdl init failed\r\n"); + else + pc.printf("libNsdl init done\r\n"); + + /* Set nsp address for library */ + set_NSP_address(nsp_addr, 5683, SN_NSDL_ADDRESS_TYPE_IPV4); +} + +void nsdl_event_loop() +{ + Thread registration_thread(registration_update_thread); + + sn_nsdl_addr_s received_packet_address; + uint8_t received_address[4]; + char buffer[1024]; + Endpoint from; + + memset(&received_packet_address, 0, sizeof(sn_nsdl_addr_s)); + received_packet_address.addr_ptr = received_address; + + while(1) + { + int n = server.receiveFrom(from, buffer, sizeof(buffer)); + if (n < 0) + { + pc.printf("Socket error\n\r"); + } + else if (n > 0) + { + pc.printf("Received %d bytes\r\n", n); + sn_nsdl_process_coap((uint8_t*)buffer, n, &received_packet_address); + } + } +} + + \ No newline at end of file