Diff: resources/light.cpp

Revision:

0:6a891da014a3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resources/light.cpp	Wed Dec 24 19:02:13 2014 +0000
@@ -0,0 +1,102 @@
+// Light resource implementation
+
+#include "mbed.h"
+#include "nsdl_support.h"
+#include "light.h"
+
+#include "PololuLedStrip.h"
+PololuLedStrip ledStrip(D2);
+//#define LED_COUNT 60
+#define LED_COUNT 120
+rgb_color colors[LED_COUNT];
+
+#define LIGHT_RES_ID    "11100/0/5900"
+
+extern Serial pc;
+char led_color[] = {"00000000"};
+
+void set_led_color(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)
+    {
+        colors[index-1] = (rgb_color) {red,green,blue} ;
+        ledStrip.write(colors, LED_COUNT);
+    }
+    else if(index == 0)
+    {
+        for(int i = 0; i < LED_COUNT; i++)
+        {
+            colors[i] = (rgb_color) {red,green,blue} ;
+            ledStrip.write(colors, LED_COUNT);
+            wait_ms(10);
+        }
+    }
+    else if(index == 255)
+    {    
+        for( int i = LED_COUNT-1; i > 0; i-- )
+        {
+            colors[i] = colors [i-1];
+        }
+    colors[0] = (rgb_color) {red,green,blue} ;
+    ledStrip.write(colors, LED_COUNT);
+    }
+}
+
+/* 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(led_color);
+        coap_res_ptr->payload_ptr = (uint8_t*)led_color;
+        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 == 8)
+        {
+            memcpy(led_color, (char *)received_coap_ptr->payload_ptr, received_coap_ptr->payload_len);
+
+            led_color[received_coap_ptr->payload_len] = '\0';
+            pc.printf("PUT: %s\r\n",led_color);
+
+            //call LED strup update function here
+            set_led_color(led_color);
+
+            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));
+
+    set_led_color("10000000");
+    set_led_color("00100000");
+    set_led_color("00001000");
+    set_led_color("00000000");
+    
+    return 0;
+}
\ No newline at end of file