Diff: nsdl_support.cpp

Revision:

16:3fb612af0dc5

Child:

17:8ca4a5801430

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nsdl_support.cpp	Fri Apr 04 15:17:07 2014 +0000
@@ -0,0 +1,204 @@
+// NSDL library support functions
+
+#include "mbed.h"
+#include "nsdl_support.h"
+#include "mbed.h"
+#include "rtos.h"
+#include "WiflyInterface.h"
+
+extern Endpoint nsp;
+extern UDPSocket server;
+//extern TCPSocketConnection server;
+extern char endpoint_name[16];
+extern uint8_t ep_type[];
+extern uint8_t lifetime_ptr[];
+
+/* The number of seconds between NSP registration messages */
+#define RD_UPDATE_PERIOD  300
+
+void *nsdl_alloc(uint16_t size)
+{
+    return malloc(size);
+}
+
+void nsdl_free(void* ptr_to_free)
+{
+    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 (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)
+{
+    /*
+    //TCP
+    int buffer_len = data_len+2;
+    printf("TX callback! Sending %d bytes", buffer_len);
+    char buffer[buffer_len];
+    buffer[0] = data_len >> 8;
+    buffer[1] = data_len & 0xFF;
+    memcpy(buffer+2, data_ptr, data_len);
+    
+    //if(cellular->write((char*)buffer, (int)buffer_len, 1000) != buffer_len)
+    if(server.send((char*)data_ptr, data_len) != data_len)
+        printf("Sending failed");
+
+    return 1;
+    */
+
+    //UDP
+    printf("TX callback!\n\rSending %d bytes\r\n", data_len);
+    if(server.sendTo(nsp, (char*)data_ptr, data_len) != data_len)
+        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)
+{
+    printf("RX callback!\r\n");
+    return 0;
+}
+
+static void registration_update_thread(void const *args)
+{
+    sn_nsdl_ep_parameters_s *endpoint_ptr = NULL;
+
+    while(true)
+    {
+        wait(RD_UPDATE_PERIOD);
+        printf("NSP attempt re-register...\r\n");
+        endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)endpoint_name, ep_type, lifetime_ptr);
+        if(sn_nsdl_register_endpoint(endpoint_ptr) != 0)
+            printf("NSP re-registering failed\r\n");
+        else
+            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)
+        printf("libNsdl init failed\r\n");
+    else
+        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];
+    int8_t nsdl_result = 0;
+    //UDP
+    char buffer[1024];
+    //TCP
+    //char buffer[2048];
+    Endpoint from;
+
+    memset(&received_packet_address, 0, sizeof(sn_nsdl_addr_s));
+    received_packet_address.addr_ptr = received_address;
+
+    while(1)
+    {
+        //UDP
+        int n = server.receiveFrom(from, buffer, sizeof(buffer));
+        //TCP
+        //int n = server.receive(buffer, sizeof(buffer));
+        if (n < 0)
+        {
+            printf("Socket error\n\r");
+        }
+        else
+        { 
+        /*
+            //TCP
+            uint16_t len = 0;
+            if (n > 2) {
+                len = 256 * buffer[0] + buffer[1]; 
+                printf("CoAP length header = %d bytes", len);
+                sn_nsdl_process_coap((uint8_t*)buffer+2, len, &received_packet_address);
+            }
+            */
+        
+            //UDP
+            wait(0.25); //Waiting seems to increase reliability of comms...
+            printf("Received %d bytes\r\n", n);
+            nsdl_result = sn_nsdl_process_coap((uint8_t*)buffer, n, &received_packet_address);
+            printf("Processed COAP Packet: %d\r\n", nsdl_result);
+        
+        }
+    }
+}
+
+            
\ No newline at end of file