Diff: resources/relay.cpp

Revision:

0:9101343a70cd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resources/relay.cpp	Tue Jul 22 23:58:23 2014 +0000
@@ -0,0 +1,58 @@
+// GPS resource implementation
+
+#include "mbed.h"
+#include "nsdl_support.h"
+#include "relay.h"
+#include "Beep.h"
+
+#define RELAY_RES_ID    "beep/0/on"
+
+extern Serial pc;
+static Beep buzzer(p26);
+
+/* Only GET and PUT method allowed */
+static uint8_t relay_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;
+    static uint8_t relay_state = '0';
+
+    pc.printf("relay callback\r\n");
+
+    if(received_coap_ptr->msg_code == COAP_MSG_CODE_REQUEST_GET)
+    {
+        coap_res_ptr = sn_coap_build_response(received_coap_ptr, COAP_MSG_CODE_RESPONSE_CONTENT);
+
+        coap_res_ptr->payload_len = 1;
+        coap_res_ptr->payload_ptr = &relay_state;
+        sn_nsdl_send_coap_message(address, coap_res_ptr);
+    }
+    else if(received_coap_ptr->msg_code == COAP_MSG_CODE_REQUEST_PUT)
+    {
+        if(received_coap_ptr->payload_len)
+        {
+            if(*(received_coap_ptr->payload_ptr) == '1')
+            {
+                buzzer.beep(1000,0);
+                relay_state = '1';
+                
+            }
+            else if(*(received_coap_ptr->payload_ptr) == '0')
+            {
+                buzzer.nobeep();
+                relay_state = '0';
+            }
+            coap_res_ptr = sn_coap_build_response(received_coap_ptr, COAP_MSG_CODE_RESPONSE_CHANGED);
+            sn_nsdl_send_coap_message(address, coap_res_ptr);
+        }
+    }
+
+    sn_coap_parser_release_allocated_coap_msg_mem(coap_res_ptr);
+
+    return 0;
+}
+
+int create_relay_resource(sn_nsdl_resource_info_s *resource_ptr)
+{
+    nsdl_create_dynamic_resource(resource_ptr, sizeof(RELAY_RES_ID)-1, (uint8_t*)RELAY_RES_ID, 0, 0, 0, &relay_resource_cb, (SN_GRS_GET_ALLOWED | SN_GRS_PUT_ALLOWED));
+    return 0;
+}
\ No newline at end of file