From 944f1b06d6093720c32e0c3218e90ff2f3d8d551 Mon Sep 17 00:00:00 2001
From: Harald Pichler <harald@the-develop.net>
Date: Sun, 24 Apr 2016 17:45:35 +0200
Subject: [PATCH] add led resource

---
 .../resources/{res-door.c => res-led.c}       | 44 ++++++++++++++-----
 examples/osd/arduino-merkurboard/sketch.pde   | 14 +++---
 2 files changed, 40 insertions(+), 18 deletions(-)
 rename examples/osd/arduino-merkurboard/resources/{res-door.c => res-led.c} (72%)

diff --git a/examples/osd/arduino-merkurboard/resources/res-door.c b/examples/osd/arduino-merkurboard/resources/res-led.c
similarity index 72%
rename from examples/osd/arduino-merkurboard/resources/res-door.c
rename to examples/osd/arduino-merkurboard/resources/res-led.c
index 97a5e9b72..fb0fa138f 100644
--- a/examples/osd/arduino-merkurboard/resources/res-door.c
+++ b/examples/osd/arduino-merkurboard/resources/res-led.c
@@ -43,35 +43,33 @@
 #include "Arduino.h"
 
 static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
+static void res_post_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
 
 /* A simple getter example. Returns the reading from the sensor with a simple etag */
-RESOURCE(res_door,
-         "title=\"Moisture status\";rt=\"Moisture\"",
+RESOURCE(res_led,
+         "title=\"LED: , POST/PUT mode=on|off\";rt=\"Control\"",
          res_get_handler,
-         NULL,
-         NULL,
+         res_post_put_handler,
+         res_post_put_handler,
          NULL);
 
-extern  uint8_t door_pin;
-extern  uint8_t door_status;
+extern  uint8_t led_pin;
+extern  uint8_t led_status;
 
 static void
 res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
 {
-  
-  door_status = digitalRead(door_pin);
-  
   unsigned int accept = -1;
   REST.get_header_accept(request, &accept);
 
   if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
     REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
-    snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", door_status);
+    snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", led_status);
 
     REST.set_response_payload(response, buffer, strlen((char *)buffer));
   } else if(accept == REST.type.APPLICATION_JSON) {
     REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
-    snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'door':%d}", door_status);
+    snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'led':%d}", led_status);
 
     REST.set_response_payload(response, buffer, strlen((char *)buffer));
   } else {
@@ -80,3 +78,27 @@ res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferr
     REST.set_response_payload(response, msg, strlen(msg));
   }
 }
+
+static void
+res_post_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
+{
+  size_t len = 0;
+  const char *mode = NULL;
+  int success = 1;
+
+  if(success && (len = REST.get_post_variable(request, "mode", &mode))) {
+    if(strncmp(mode, "on", len) == 0) {
+      digitalWrite(led_pin, LOW);
+      led_status=1;
+    } else if(strncmp(mode, "off", len) == 0) {
+      digitalWrite(led_pin, HIGH);
+      led_status=0;
+    } else {
+      success = 0;
+    }
+  } else {
+    success = 0;
+  } if(!success) {
+    REST.set_response_status(response, REST.status.BAD_REQUEST);
+  }
+}
diff --git a/examples/osd/arduino-merkurboard/sketch.pde b/examples/osd/arduino-merkurboard/sketch.pde
index c5b3bc3db..41df5a847 100644
--- a/examples/osd/arduino-merkurboard/sketch.pde
+++ b/examples/osd/arduino-merkurboard/sketch.pde
@@ -15,21 +15,21 @@ extern "C" {
 #include "rest-engine.h"
 #include "net/netstack.h"
 
-extern resource_t res_leds, res_battery, res_cputemp;
-uint8_t door_pin = 3;
-uint8_t door_status = 0;
+extern resource_t res_led, res_battery, res_cputemp;
 
-#define LED_PIN 4
+uint8_t led_pin=4;
+uint8_t led_status;
 }
 
 void setup (void)
 {
     // switch off the led
-    pinMode(LED_PIN, OUTPUT);
-    digitalWrite(LED_PIN, HIGH);
+    pinMode(led_pin, OUTPUT);
+    digitalWrite(led_pin, HIGH);
+    led_status=0;
     // init coap resourcen
     rest_init_engine ();
-    rest_activate_resource (&res_leds, "s/leds");
+    rest_activate_resource (&res_led, "s/led");
     rest_activate_resource (&res_battery, "s/battery");
     rest_activate_resource (&res_cputemp, "s/cputemp");