Diff: resources/LED_array.cpp

Revision:

0:950566b0e099

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resources/LED_array.cpp	Thu Oct 30 21:44:12 2014 +0000
@@ -0,0 +1,115 @@
+// Light resource implementation
+
+#include "mbed.h"
+#include "nsdl_support.h"
+#include "ChainableLED.h"
+#include "LED_array.h"
+
+#define LED_ARRAY_RES_ID    "11100/0/5900"
+#define LED_ARRAY_RES_RT    "urn:X-mbed:LEDarray"
+
+extern Serial pc;
+char led_value[] = {"0000000"}; //RRGGBBII
+
+#define LED_COUNT 1
+
+ChainableLED led_chain(P0_0, P0_1, LED_COUNT);
+
+uint8_t LED_array_max_age = 0; 
+uint8_t LED_array_content_type = 0;
+
+void set_led_array(char *color_string)
+{
+    static uint8_t red, green, blue, index;
+    int color_int;
+
+    sscanf(color_string, "%X", &color_int);
+    
+    index = color_int & 255;
+    blue = color_int >> 8 & 255;
+    green = color_int >> 16 & 255;
+    red = color_int >> 24 & 255;
+        
+    if(index > 0 and index <= LED_COUNT)
+    {
+        led_chain.setColorRGB(index-1, red, green, blue);    
+    }
+    else if(index == 0)
+    {
+        for(int i = 0; i < LED_COUNT; i++)
+        {
+            led_chain.setColorRGB(i, red, green, blue);    
+        }
+    }    
+}
+
+
+/* Only GET and PUT method allowed */
+static uint8_t LED_array_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 array 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(led_value);
+        coap_res_ptr->payload_ptr = (uint8_t*)led_value;
+        
+        coap_res_ptr->content_type_ptr = &LED_array_content_type;
+        coap_res_ptr->content_type_len = sizeof(LED_array_content_type);
+        
+        coap_res_ptr->options_list_ptr = (sn_coap_options_list_s*)nsdl_alloc(sizeof(sn_coap_options_list_s));
+        if(!coap_res_ptr->options_list_ptr)
+            {
+            pc.printf("cant alloc option list for max-age\r\n");
+            coap_res_ptr->options_list_ptr = NULL; //FIXME report error and recover
+            }
+        memset(coap_res_ptr->options_list_ptr, 0, sizeof(sn_coap_options_list_s));
+        coap_res_ptr->options_list_ptr->max_age_ptr = &LED_array_max_age;
+        coap_res_ptr->options_list_ptr->max_age_len = sizeof(LED_array_max_age);
+
+        sn_nsdl_send_coap_message(address, coap_res_ptr);
+        nsdl_free(coap_res_ptr->options_list_ptr);
+        coap_res_ptr->options_list_ptr = NULL;
+        coap_res_ptr->content_type_ptr = NULL;// parser_release below tries to free this memory
+
+    }
+    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 == 8)
+        {
+            memcpy(led_value, (char *)received_coap_ptr->payload_ptr, received_coap_ptr->payload_len);
+
+            led_value[received_coap_ptr->payload_len] = '\0';
+            pc.printf("PUT: %s\r\n",led_value);
+
+            //call LED array update function here
+            set_led_array(led_value);
+
+            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_LED_array_resource(sn_nsdl_resource_info_s *resource_ptr)
+{
+    nsdl_create_dynamic_resource(resource_ptr, sizeof(LED_ARRAY_RES_ID)-1, (uint8_t*)LED_ARRAY_RES_ID, sizeof(LED_ARRAY_RES_RT)-1, (uint8_t*)LED_ARRAY_RES_RT, 0, &LED_array_resource_cb, (SN_GRS_GET_ALLOWED | SN_GRS_PUT_ALLOWED));
+    set_led_array("FF000000");
+    wait(0.5);
+    set_led_array("00FF0000");
+    wait(0.5);
+    set_led_array("0000FF00");
+    wait(0.5);
+    set_led_array("00000000");
+
+            
+    return 0;
+}
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