Diff: resources/light.cpp

Revision:

0:f7f236605c98

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resources/light.cpp	Sat Oct 11 06:14:44 2014 +0000
@@ -0,0 +1,71 @@
+// Light resource implementation
+
+#include "mbed.h"
+#include "nsdl_support.h"
+#include "light.h"
+
+#define LIGHT_RES_ID    "11100/0/5900"
+
+extern Serial pc;
+char leds[] = {"1111"}; //YGBR
+
+DigitalOut grn(LED1);
+DigitalOut red(LED2);
+DigitalOut blu(LED3);
+DigitalOut yel(LED4);
+
+void set_leds(char *leds)
+{
+int leds_int ;
+
+    sscanf(leds, "%x", &leds_int);
+    
+    grn = ~leds_int & 1;
+    red = ~leds_int >> 4 & 1;
+    blu = ~leds_int >> 8 & 1;
+    yel = ~leds_int >> 12 & 1;
+}
+
+
+/* Only GET and PUT method allowed */
+static uint8_t light_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;
+
+    //pc.printf("LED Strip 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 = strlen(leds);
+        coap_res_ptr->payload_ptr = (uint8_t*)leds;
+        sn_nsdl_send_coap_message(address, coap_res_ptr);
+    }
+    else if(received_coap_ptr->msg_code == COAP_MSG_CODE_REQUEST_PUT)
+    {
+        //pc.printf("PUT: %d bytes\r\n", received_coap_ptr->payload_len);
+        if(received_coap_ptr->payload_len == 4)
+        {
+            memcpy(leds, (char *)received_coap_ptr->payload_ptr, received_coap_ptr->payload_len);
+
+            leds[received_coap_ptr->payload_len] = '\0';
+            pc.printf("PUT: %s\r\n",leds);
+
+            //call LED strup update function here
+            set_leds(leds);
+
+            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_light_resource(sn_nsdl_resource_info_s *resource_ptr)
+{
+    nsdl_create_dynamic_resource(resource_ptr, sizeof(LIGHT_RES_ID)-1, (uint8_t*)LIGHT_RES_ID, 0, 0, 0, &light_resource_cb, (SN_GRS_GET_ALLOWED | SN_GRS_PUT_ALLOWED));
+    return 0;
+}
\ No newline at end of file