o Making the device blink when connected.

1 files changed, 45 insertions, 12 deletions

diff --git a/app.cpp b/app.cpp
index 1a96192..65b4b73 100644
--- a/app.cpp
+++ b/app.cpp
@@ -8,6 +8,7 @@
 #define PROGMEM __attribute__((section(".progmem.data")))
 
 #define SENSOR_COUNT 2
+#define LED_PIN 13
 
 // See http://redbearlab.com/blendmicro/ for pins.
 struct sm_sensor {
@@ -27,45 +28,76 @@ struct sm_sensor {
 
 static unsigned long next_update[SENSOR_COUNT];
 
-void sm_on_connect() {
-  // Disable all updates until enabled.
-  for (int i = 0; i < SENSOR_COUNT; i++) {
-    next_update[i] = 0;
-  }
-}
+// How often the connected light should toggle, in ms
+#define BLINK_WAIT 500
+static boolean connected;
+static boolean blink;
+static unsigned long last_blink;
 
 void sm_setup() {
   for (int i = 0; i < SENSOR_COUNT; i++) {
     struct sm_sensor s = sensors[i];
-    
+
     pinMode(s.a_pin, INPUT);
     pinMode(s.d1_pin, OUTPUT);
     pinMode(s.d2_pin, OUTPUT);
   }
+
+  pinMode(LED_PIN, OUTPUT);
+}
+
+void sm_on_connect() {
+  // Disable all updates until enabled.
+  for (int i = 0; i < SENSOR_COUNT; i++) {
+    next_update[i] = 0;
+  }
+
+  connected = true;
+  blink = true;
+  digitalWrite(LED_PIN, HIGH);
+  last_blink = millis();
+}
+
+void sm_on_disconnect() {
+  connected = false;
+  digitalWrite(LED_PIN, LOW);
 }
 
 void sm_loop() {
   static unsigned long last = 0, now;
-  
+
   static uint8_t x = 10;
 
   now = millis();
-  
+
+  if (now - last_blink > BLINK_WAIT) {
+    last_blink = now;
+    if (connected) {
+      blink = !blink;
+      digitalWrite(LED_PIN, _blink ? HIGH : LOW);
+    }
+  }
+
   if (now - last > 3000) {
     last = now;
     for (int i = 0; i < SENSOR_COUNT; i++) {
       struct sm_sensor& s = sensors[i];
-      
+
       digitalWrite(s.d1_pin, HIGH);
       digitalWrite(s.d2_pin, LOW);
 
       s.value = analogRead(s.a_pin);
+
+      if (i > 0) {
+        Serial.print(", ");
+      }
       Serial.print("#");
       Serial.print(i, DEC);
       Serial.print(" = ");
       Serial.print(s.value, DEC);
-      Serial.println();
     }
+
+    Serial.println();
   }
 
   // TODO: implement proper notification
@@ -293,8 +325,9 @@ void on_soil_moisture_ctrl(uint8_t *data, uint8_t len) {
 
   if (res.code == SM_CMD_FAIL) {
     body_len = 0;
-  }  
+  }
 
   notify_soil_moisture(res, body_len);
 }
 
+// vim: set ft=arduino: